WO2017211117A1 - Integrated apparatus, exhaust gas post-processing system, and control method - Google Patents
Integrated apparatus, exhaust gas post-processing system, and control method Download PDFInfo
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- WO2017211117A1 WO2017211117A1 PCT/CN2017/079995 CN2017079995W WO2017211117A1 WO 2017211117 A1 WO2017211117 A1 WO 2017211117A1 CN 2017079995 W CN2017079995 W CN 2017079995W WO 2017211117 A1 WO2017211117 A1 WO 2017211117A1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
- F01N3/025—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
- F01N3/208—Control of selective catalytic reduction [SCR], e.g. dosing of reducing agent
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
- F01N3/025—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust
- F01N3/0253—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust adding fuel to exhaust gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N9/00—Electrical control of exhaust gas treating apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N9/00—Electrical control of exhaust gas treating apparatus
- F01N9/002—Electrical control of exhaust gas treating apparatus of filter regeneration, e.g. detection of clogging
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C2/18—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
- F01N2570/14—Nitrogen oxides
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/03—Adding substances to exhaust gases the substance being hydrocarbons, e.g. engine fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1433—Pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1433—Pumps
- F01N2610/144—Control thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
- F01N2610/146—Control thereof, e.g. control of injectors or injection valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1473—Overflow or return means for the substances, e.g. conduits or valves for the return path
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1486—Means to prevent the substance from freezing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Definitions
- the invention relates to an integrated device, an exhaust gas aftertreatment system and a control method, and belongs to the technical field of engine exhaust aftertreatment.
- the post-treatment technology commonly used in the industry is selective catalytic reduction (SCR), and the exhaust gas is installed upstream of the SCR.
- SCR selective catalytic reduction
- the urea solution is sprayed in.
- the urea solution is hydrolyzed and pyrolyzed to generate ammonia gas, and chemically reacts with nitrogen oxides to reduce the concentration of harmful substances.
- Urea injection systems currently on the market typically include air assist systems and non-air assist systems.
- any system includes a urea tank assembly, a pump supply unit connected to the urea tank assembly through a low pressure line, a nozzle module connected to the pump supply unit through a high pressure line, and a controller.
- the pump supply unit includes a urea pump, a pressure sensor, and the like, and the nozzle module includes a urea nozzle or the like.
- the urea pump is spaced farther from the urea nozzle and is connected by a urea tube.
- the existing urea injection system contains many components, and the installation is complicated and the cost is high.
- the present invention adopts the following technical solutions:
- the pump assembly includes a pump assembly housing and the pump cooperating with the pump assembly housing, the pump assembly housing including an inlet passage upstream of the pump and in communication with the pump and located at the An outlet passage downstream of the pump and in communication with the pump, the outlet passage and the nozzle assembly
- the pump assembly includes a motor coil for driving the pump, a magnetic body interacting with the motor coil, an elastic body located under the magnetic body, and a metal housing the magnetic body and the elastic body a cover and an intermeshing first gear assembly and a second gear assembly, wherein the magnetic body and the elastic body are respectively sleeved on upper and lower ends of the metal skeleton, and the end of the metal skeleton is provided with the elasticity a body-fitting hook;
- the first gear assembly includes a first gear shaft and a first gear
- the second gear for driving the pump
- the pump assembly housing including an inlet passage upstream of the pump and in communication with the pump and located at the An outlet passage downstream of the pump and in communication with the pump, the outlet passage and the
- the pump is a urea pump
- the nozzle is a urea nozzle
- the fluid medium is a urea solution.
- the pump is a fuel pump
- the nozzle is a fuel nozzle
- the fluid medium is a fuel
- the integrated device includes a controller connected to the motor coil and the nozzle coil, and the controller independently controls the urea pump and the urea nozzle, respectively.
- the integrated device includes a pressure sensor in communication with the outlet passage and an overflow element connected between the outlet passage and the inlet passage.
- the integrated device includes a temperature sensor installed in the casing of the pump assembly.
- the pump assembly includes a metal cover for housing the magnetic body and the elastic body, the motor coil is sleeved on a periphery of the metal cover; the first gear shaft is active a shaft, the second gear shaft is a driven shaft, and the first gear shaft is higher than the second gear shaft.
- the elastomer can be compressed to absorb the expanded volume generated by the urea icing.
- the pump assembly housing is provided with a gear slot for receiving the first gear and the second gear, and the first gear is externally meshed with the second gear, the gear One side of the groove is provided with a liquid inlet chamber communicating with the inlet passage, and the other side of the gear groove is provided with an outlet chamber communicating with the outlet passage.
- the nozzle assembly includes a magnetic portion that interacts with the nozzle coil, a valve needle portion located below the magnetic portion, and acts between the magnetic portion and the valve needle portion Spring and the valve needle Valve seat.
- the nozzle coil is located at a periphery of the magnetic portion, the valve needle portion is provided with a valve needle, and the valve seat is provided with an injection hole that cooperates with the valve needle.
- the valve seat includes a swirling fin welded on the nozzle assembly housing, the injection hole is disposed on the swirling sheet, and the swirling fin is further provided with The swirl holes are connected by the injection holes.
- the integrated device is provided with a cooling assembly for cooling the urea nozzle, and the cooling assembly cools the urea nozzle by a cooling medium.
- the pump assembly housing includes a first housing, a second housing under the first housing, and a third housing under the second housing.
- the third housing includes a body portion and a protrusion extending downward from the body portion;
- the nozzle assembly housing includes a body portion and an extension portion extending downward from the body portion, the body portion being provided And a receiving cavity for receiving the urea nozzle and a groove for receiving the convex portion, the receiving cavity extending downward into the extending portion.
- the first housing includes a first upper surface, a first lower surface, and a first side, wherein the first upper surface is provided with a first annular groove, and the first ring a first island portion surrounded by the groove and a first sealing ring received in the first annular groove; the first island portion is provided with a first positioning hole penetrating the first upper surface and the first lower surface And a second positioning hole extending through the first lower surface, the urea pump includes a first sleeve received in the first positioning hole and a second sleeve received in the second positioning hole, wherein The first gear shaft is inserted into the first bushing, and the second gear shaft is inserted into the second bushing.
- the first lower surface is provided with a first relief groove that communicates with the first positioning hole and the second positioning hole.
- the first island portion further includes a first guiding groove extending through the first upper surface and communicating with the second positioning hole, and the first upper surface and the inlet a first connecting hole communicating with the passage;
- the first housing is provided with a second connecting hole penetrating the first lower surface and communicating with the liquid inlet chamber, and penetrating the first lower surface and the liquid discharging An exit hole that communicates with the cavity.
- the first housing is provided with an overflow element receiving groove communicating with the outlet hole, the overflow element is installed in the overflow element receiving groove; when the outlet passage is When the pressure is above a set value, the overflow element opens to return a portion of the urea solution to the inlet passage.
- the second housing includes a second upper surface and a second lower surface, and the gear groove extends through the second upper surface and the second lower surface.
- the body portion is provided with a third upper surface
- the third upper surface is provided with a third annular groove and a third island portion surrounded by the third annular groove
- the The three island portion is provided with a third positioning hole penetrating the third upper surface and a fourth positioning hole, and the third positioning hole and the fourth positioning hole extend into the convex portion;
- the urea pump includes a third bushing received in the third positioning hole and a fourth bushing received in the fourth positioning hole, wherein the first gear shaft is inserted into the third bushing, the second A gear shaft is inserted into the fourth bushing.
- the third island portion is provided with a second guiding groove and a third guiding groove extending through the third upper surface, wherein the second guiding groove and the third The positioning holes are in communication, and the third guiding grooves are in communication with the fourth positioning holes.
- the nozzle assembly housing is provided with a first cooling passage, a second cooling passage spaced apart from the first cooling passage, and an end cover sealed at a periphery of the extension portion,
- the nozzle assembly housing forms an annular cooling groove connecting the first cooling passage and the second cooling passage between the end cover and the extending portion, and the first cooling passage is connected with the inlet joint for supplying
- An engine coolant injection is provided, the second cooling passage being coupled to the outlet joint for engine coolant to flow out.
- the hook portion is provided with a guiding tapered surface which is easy to sleeve the elastic body to the metal skeleton.
- the metal skeleton is provided with a partition plate between the elastic body and the magnetic body, and the metal skeleton is hollow in a tubular shape as a whole, and the first gear shaft At least partially contained in the metal skeleton.
- the elastic body is provided with a radially extending mounting hole
- the metal skeleton is provided with a fixing hole corresponding to the mounting hole
- the upper end of the first gear shaft is mounted at the The assembly hole and the screw in the fixing hole are radially fixed to the metal skeleton.
- An exhaust aftertreatment system includes an exhaust aftertreatment exhaust system and an exhaust aftertreatment packaging system, wherein the injection system includes the aforementioned integrated device, the package system including a carrier downstream of the integrated device.
- a control method of an integrated device comprising:
- the fluid medium is delivered to the nozzle through the outlet passage;
- the motor coil and the nozzle coil are independently controlled.
- the integrated device of the pump and the nozzle of the invention integrates the pump and the nozzle well, and has a simple and compact structure, which greatly facilitates the installation of the customer.
- the motor coil and the nozzle coil by independently controlling the motor coil and the nozzle coil, mutual interference between the pump and the nozzle is avoided, and the accuracy of the control is improved.
- the amount of urea injected into the exhaust gas can be appropriately proportioned with the nitrogen oxides, thereby reducing the excessive injection of urea. Risk of crystallization.
- the magnetic body and the elastic body are placed on the upper and lower ends of the metal skeleton, respectively, and the end of the metal skeleton is provided with a hook portion that is pressed against the elastic body, the number of parts is reduced, and the assembly of the parts is facilitated.
- FIG. 1 is a schematic diagram of the exhaust gas aftertreatment system of the present invention applied to the treatment of engine exhaust.
- Figure 2 is a schematic diagram of the integrated device of Figure 1.
- FIG. 3 is a perspective view of an integrated device of the present invention in an embodiment.
- Figure 4 is a perspective view of another angle of Figure 3.
- Figure 5 is a perspective view of another angle of Figure 3.
- Figure 6 is a front elevational view of Figure 3.
- Figure 7 is a right side view of Figure 3.
- Fig. 8 is a bottom view of Fig. 5;
- Figure 9 is a plan view of Figure 5.
- Figure 10 is a partial perspective exploded view of the integrated device of the present invention with the pump assembly separated from the nozzle assembly.
- Figure 11 is a partially exploded perspective view of the pump assembly of Figure 10 with the housing, motor coil and venting cover separated.
- Figure 12 is a perspective view of the housing of Figure 11 assembled with the motor coil.
- Figure 13 is an exploded perspective view of Figure 12 .
- Figure 14 is a further exploded perspective view of Figure 11 with the control panel separated.
- Figure 15 is an exploded perspective view showing the cover of Figure 14 and the control panel removed, wherein the connector assembly is separated.
- Figure 16 is a perspective view of the connecting plate assembly of Figure 15.
- Figure 17 is an exploded perspective view of the connecting plate assembly of Figure 15.
- Figure 18 is a further exploded perspective view of Figure 15 with the magnetic body, elastomer and screws separated.
- Figure 19 is a further exploded perspective view of Figure 18 with the first seal ring, temperature sensor and pressure sensor separated.
- Fig. 20 is an exploded perspective view showing the magnetic body, the elastic body, the screw, and the like in Fig. 19;
- Figure 21 is a schematic cross-sectional view of Figure 20 taken along an angle after assembly.
- Figure 22 is a perspective view of the pressure sensor of Figure 19.
- Figure 23 is a perspective view of another angle of Figure 22.
- Figure 24 is an exploded perspective view of Figure 22 .
- Figure 25 is a cross-sectional view taken along line C-C of Figure 22.
- Fig. 26 is a partially exploded perspective view showing the first seal ring, the temperature sensor, the pressure sensor, and the like in Fig. 19, wherein the first casing is separated.
- Figure 27 is an exploded perspective view of the first housing of Figure 26.
- Figure 28 is an exploded perspective view of Figure 27 at another angle.
- Figure 29 is a perspective view of a portion of the first housing of Figure 27.
- Figure 30 is a perspective view of Figure 29 at another angle.
- Figure 31 is a plan view of Figure 30.
- Figure 32 is a cross-sectional view taken along line D-D of Figure 31.
- Figure 33 is a schematic cross-sectional view taken along line E-E of Figure 31.
- Figure 34 is a cross-sectional view taken along line F-F of Figure 31.
- Figure 35 is a plan view of Figure 29.
- Figure 36 is a schematic cross-sectional view taken along line G-G of Figure 35.
- Figure 37 is a cross-sectional view taken along line H-H of Figure 35.
- Figure 38 is a cross-sectional view taken along line I-I of Figure 35.
- Figure 39 is a perspective view of the first housing of Figure 26 removed.
- Figure 40 is a partial exploded perspective view of Figure 39 with the first gear assembly and the second gear assembly separated.
- FIG. 41 is a plan view of FIG. 39.
- FIG. 42 is an exploded perspective view of the first gear assembly and the second gear assembly of FIG. 40 after removal.
- Figure 43 is a perspective view of the second housing of Figure 42.
- Figure 44 is a perspective view showing another angle of Figure 43.
- Figure 45 is a perspective view of the third housing assembly of Figure 42.
- Figure 46 is a plan view of Figure 45.
- Figure 47 is a cross-sectional view taken along line J-J of Figure 46.
- Figure 48 is a schematic cross-sectional view taken along line K-K of Figure 46.
- Figure 49 is a partially exploded perspective view of the nozzle assembly of the present invention.
- Figure 50 is a partially exploded perspective view of the urea nozzle of Figure 49.
- Figure 51 is a perspective view of the nozzle assembly housing of Figure 49.
- Figure 52 is a partially exploded perspective view of Figure 51.
- Figure 53 is a top plan view of a portion of the nozzle assembly housing of Figure 52.
- Figure 54 is a schematic cross-sectional view taken along line L-L of Figure 53.
- Figure 55 is a schematic cross-sectional view taken along line M-M of Figure 54.
- Figure 56 is a schematic cross-sectional view taken along line N-N of Figure 54.
- Figure 57 is a perspective view of another angle of Figure 53.
- Figure 58 is an exploded perspective view of the integrated device of the present invention.
- Figure 59 is a schematic cross-sectional view taken along line A-A of Figure 9.
- Figure 60 is a schematic cross-sectional view taken along line O-O of Figure 59.
- Figure 61 is a schematic cross-sectional view taken along line P-P of Figure 59.
- Figure 62 is a cross-sectional view taken along line Q-Q of Figure 60.
- Figure 63 is a schematic cross-sectional view taken along line R-R of Figure 61.
- Figure 64 is a cross-sectional view taken along line B-B of Figure 9.
- Figure 65 is a schematic cross-sectional view taken along line S-S of Figure 64.
- the present invention discloses an exhaust aftertreatment system 100 that can be applied to treat exhaust gas from engine 10 to reduce emissions of hazardous materials to meet emission regulations.
- the exhaust aftertreatment system 100 includes an exhaust aftertreatment injection system 200 and an exhaust aftertreatment packaging system 300, wherein the injection system 200 includes means for pumping urea solution from the urea tank 201 (as indicated by arrow X) and An integrated device 1 that injects urea solution into the exhaust of the engine 10 (eg, into the exhaust pipe 106 or within the packaging system 300); the packaging system 300 includes a mixer 301 located downstream of the integrated device 1 and located at the The carrier 302 downstream of the mixer 301 is described. Of course, in some embodiments, the mixer may not be provided, or two or more mixers may be provided.
- the carrier 302 can be, for example, a selective catalytic reduction (SCR) or the like.
- the engine 10 has an engine coolant circulation circuit.
- the engine coolant circulation circuit includes a first circulation circuit 101 (shown by a thick arrow Y) and a second circulation circuit 102 (refer to a thin arrow Z).
- the first circulation loop 101 is configured to cool the integrated device 1 to reduce its risk of being burned out by a high temperature engine exhaust; the second circulation loop 102 is used to heat the urea tank 201, To achieve the heating and defrosting function.
- the integrated device 1 in the first circulation loop 101, is provided with an inlet joint 103 for the engine coolant to flow in and an outlet joint 104 for the engine coolant to flow out; in the second circulation loop 102, it is provided There is a control valve 105 to open or close the control valve 105 under suitable conditions to effect control of the second circulation loop 102.
- the urea tank 201 is provided with a heating rod 202 connected to the second circulation loop 102 to heat and thaw the urea solution by using the temperature of the engine coolant.
- the integrated device 1 of the present invention will be described in detail below.
- the integrated device 1 of the present invention integrates the functions of the urea pump 11 and the urea nozzle 12.
- the urea pump 11 includes, but is not limited to, a gear pump, a diaphragm pump, a plunger pump, a vane pump, and the like. It should be understood that the term "integrated" as used herein means that the urea pump 11 and the urea nozzle 12 can be mounted as a single unit on the exhaust pipe; or the urea pump 11 and the urea nozzle 12 are close to each other and pass through a shorter one.
- the connecting pipe is connected and can be regarded as a device as a whole.
- the exhaust gas post-treatment system 100 of the present invention is further provided with a controller 13.
- the controller 13 may be integrated with or separate from the integrated device 1. Referring to FIG. 2, in the illustrated embodiment of the present invention, the controller 13 is integrated in the integrated device 1 to achieve high integration of parts and improve installation convenience of the client.
- the integrated device 1 is provided with a housing 14 for accommodating the urea pump 11 and the urea nozzle 12.
- the embodiment shown in Figure 2 is only a rough representation of the housing 14.
- the housing 14 is comprised of a urea pump 11 and urea.
- the nozzle 12 is shared; in another embodiment, the housing 14 is divided into a first housing that cooperates with the urea pump 11 and a second housing that cooperates with the urea nozzle 12, the first housing and the first housing The two housings are assembled together to form a unitary body.
- the housing 14 is provided with an inlet passage 15 connected between the urea tank 201 and the urea pump 11, and an outlet passage 16 connected between the urea pump 11 and the urea nozzle 12.
- inlet in the "inlet passage 15" and “outlet” in the “outlet passage 16" are referenced by the urea pump 11, that is, the upstream of the urea pump 11 is the inlet, and the urea pump 11 The downstream is the exit.
- the outlet passage 16 is in communication with the urea nozzle 12 to pump a urea solution to the urea nozzle 12. It can be understood that the inlet passage 15 is located upstream of the urea pump 11 and is a low pressure passage; the outlet passage 16 is located downstream of the urea pump 11 and is a high pressure passage.
- the integrated device 1 is provided with a temperature sensor 171 for detecting temperature.
- the temperature sensor 171 may be disposed to communicate with the inlet passage 15 and/or the outlet passage 16; or the temperature sensor 171 may be disposed to be mounted at any position of the integrated device 1.
- the signal detected by the temperature sensor 171 is transmitted to the controller 13, and the control algorithm designed by the controller 13 based on the input signal and other signals can improve the injection accuracy of the urea nozzle 12.
- the integrated device 1 is also provided with a pressure sensor 172 for detecting pressure, the pressure sensor 172 being in communication with the outlet passage 16 to detect the pressure in the high pressure passage of the outlet of the urea pump 11.
- the distance of the internal passage is relatively short, so that the position of the pressure sensor 172 can be considered to be relatively close to the urea nozzle 12.
- An advantage of this design is that the pressure measured by the pressure sensor 172 is relatively close to the pressure in the urea nozzle 12, improving the accuracy of the data, thereby increasing the injection accuracy of the urea nozzle 12.
- the integrated device 1 is further provided with an overflow element 173 connected between the outlet passage 16 and the inlet passage 15.
- the overflow element 173 includes, but is not limited to, a relief valve, a safety valve, or an electrically controlled valve or the like.
- the function of the overflow element 173 is to open the overflow element 173 when the pressure in the high pressure passage is higher than the set value, to release the urea solution located in the high pressure passage into the low pressure passage or directly return to the In the urea tank 201, pressure regulation is achieved.
- the urea pump 11 In order to drive the urea pump 11, the urea pump 11 is provided with a motor coil 111 that communicates with the controller 13. In order to drive the urea nozzle 12, the urea nozzle 12 is provided with a nozzle coil 121 that communicates with the controller 13.
- the controller 13 communicates with the temperature sensor 171 and the pressure sensor 172 to transmit a temperature signal and a pressure signal to the controller 13.
- the controller 13 can also receive other signals, such as signals from the CAN bus that are related to engine operating parameters.
- the controller 13 can also obtain the rotational speed of the urea pump 11, of course, the speed signal can be collected through the corresponding rotational speed sensor 175 (hardware) or Implemented by a control algorithm (software).
- the controller 13 independently controls the urea pump 11 and the urea nozzle 12. The advantage of such control is that the effect of the action of the urea pump 11 on the urea nozzle 12 can be reduced to achieve a relatively high control accuracy.
- the integrated device 1 is also provided with a cooling assembly for this purpose, which cools the urea nozzle 12 by means of a cooling medium.
- the cooling medium includes, but is not limited to, air, and/or engine coolant, and/or lubricating oil, and/or urea, and the like.
- the illustrated embodiment of the present invention uses water cooling, i.e., cooling the urea nozzle 12 with engine coolant.
- a cooling passage 141 for circulating the engine coolant is provided in the housing 14.
- the main working principle of the integrated device 1 is as follows:
- the controller 13 drives the urea pump 11 to operate.
- the urea solution in the urea tank 201 is sucked into the urea pump 11 through the inlet passage 15, and after being pressurized, is sent to the urea nozzle 12 through the outlet passage 16.
- the controller 13 collects and/or calculates required signals such as temperature, pressure, pump speed, and the like.
- the controller 13 sends a control signal to the urea nozzle 12, such as energizing the nozzle coil 121, and by controlling the movement of the valve needle to effect urea injection.
- the controller 13 sends a control signal to the urea pump 11 to control its rotational speed, thereby stabilizing the pressure of the system.
- the controller 13 independently controls the urea pump 11 and the urea nozzle 12.
- the integrated device 1 includes a pump assembly 18, a nozzle assembly 19, and a controller 13.
- the nozzle assembly 19 is at least partially inserted into the pump assembly 18 and assembled together by a plurality of mounting bolts 64.
- the pump assembly 18 includes a pump assembly housing 180 and a urea pump 11 that mates with the pump assembly housing 180.
- the pump assembly housing 180 includes a housing 2 at the top and a first housing 3, a second housing 4, and a third housing 5 that are stacked below the housing 2.
- the first housing 3, the second housing 4, and the third housing 5 are each made of a metal material.
- the casing 2 includes a casing cavity 21 for covering the controller 13 and at least a portion of the pump assembly 18, and a through hole 22 communicating with the casing cavity 21.
- the controller 13 is mounted with a chip and other electronic components, which generate heat during operation, causing the surrounding air to expand.
- the present invention solves the problem of air expansion by providing a waterproof and permeable cover 24.
- the problem of bad chips and/or electronic components can also be waterproof.
- the waterproof venting cover 24 can improve the environment in which the controller 13 is placed to enable it to meet operating conditions.
- the casing 2 is made of a metal material having a better heat dissipation effect.
- the cover 2 may also be provided with a plurality of fins (not shown) on the outside to enhance the heat dissipation effect.
- the controller 13 includes a control board 131 and a cable plug 132 soldered to the control board 131.
- the cable plug 132 passes through the casing 2 to be exposed to the outside for connection to an external circuit.
- the control panel 131 is annular and is provided with a central aperture 135 in the middle.
- the pump assembly 18 is also provided with a plurality of support posts 631 mounted on the first housing 3 and for supporting the control panel 131.
- the pump assembly housing 180 is further provided with a connecting plate assembly 6 between the casing 2 and the first casing 3.
- the connecting plate assembly 6 is provided with a plate portion 61 and a metal cover 62 fixed to the plate portion 61 and convex upward.
- the metal cover 62 passes upward through the center hole 135 of the control board 131.
- the control board 131 is sandwiched by the support post 631 and the cover 2 and forms a gap with the connecting plate assembly 6 to facilitate the control panel 131 to perform more. Good heat dissipation and better avoid interference.
- the plate portion 61 is provided with a through hole 614, a first threading hole 618, and a through hole 615 extending through the upper and lower surfaces thereof.
- the pressure sensor 172 at least partially passes through the through hole 614
- the temperature sensor 171 at least partially passes through the through hole 615.
- the conductive line 1721 of the pressure sensor 172 passes through the through hole 614
- the conductive line 124 of the nozzle assembly 19 passes through the first threading hole 618
- the conductive line 1711 of the temperature sensor 171 passes through the through hole 615, and is electrically connected to the control.
- On the board 131 In addition, referring to FIG.
- the plate portion 61 is provided with a plurality of mounting holes 611 through which the screws 133 pass.
- the plate portion 61 is provided with a through hole 617 corresponding to the metal cover 62.
- the lower end of the metal cover 62 is welded to the inner wall of the perforation 617.
- the urea pump 11 is a gear pump including a motor coil 111, the metal cover 62, an elastic body 71 located in the metal cover 62, and a magnetic body 72.
- the motor coil 111 is provided with a bracket 112 and a coil 113 wound around the bracket 112.
- the bracket 112 is provided with a hole 114 for receiving the metal cover 62.
- the motor coil 111 is interference fit in the casing cavity 21, so that no additional fixed elements can be used.
- the motor coil 111 is formed integrally with the casing cavity 21, thereby reducing the number of parts.
- the urea pump 11 further includes an outer sleeve 723 that houses the magnetic body 72. The outer sleeve 723 is directly received in the metal cover 62.
- the motor coil 111 is sleeved on the periphery of the metal cover 62.
- the sheet portion 61 presses down the first seal ring 73 to effect sealing.
- the elastic body 71 is located at the lower end of the magnetic body 72, and the elastic body 71 and the magnetic body 72 are supported by a metal skeleton 720, for example, the magnetic body 72 and the elastic body 71 are respectively sleeved on the metal skeleton.
- the metal skeleton 720 is provided with a partitioning plate 721 between the elastic body 71 and the magnetic body 72.
- the metal skeleton 720 has a hollow cylindrical shape as a whole, and the first gear assembly 74 is at least partially housed in the metal skeleton 720 (refer to FIG. 59).
- the end of the metal skeleton 720 is provided with a hook portion 724 that is pressed against the elastic body 71.
- the hook portion 724 is provided with a guiding cone surface 725 that is easy to sleeve the elastic body 71 onto the metal frame 720.
- the elastic body 71 is provided with a radially extending fitting hole 711.
- the metal frame 720 is provided with a fixing hole 726 corresponding to the mounting hole 711.
- the upper end of the first gear assembly 74 is mounted on the mounting hole 711 and the fixing hole.
- the screw 722 in 726 is radially fixed to the metal skeleton 720.
- the pressure sensor 172 includes a substrate 176, a circuit board 177 fixed on the substrate 176, and a conductive connection connected to the circuit board 177.
- the substrate 176 is provided with a plate body portion 1761 and a protrusion portion 1762 extending downward from the plate body portion 1761.
- a sealing ring 1722 is mounted on the protrusion portion 1762.
- the protruding portion 1762 is provided with a through hole 1763 penetrating downward, and the through hole 1763 penetrates the plate body portion 1761 and the circuit board 177 upward.
- the circuit board 177 is provided with a chip 1771 at a position corresponding to the through hole 1763.
- the protective cover 178 is mounted on the periphery of the chip 1771 to protect the chip 1771.
- the protective cover 178 has a rectangular parallelepiped shape, and the protective cover 178 is provided with a hole 1781 communicating with the chip 1771.
- the pressure sensor 172 of the present invention does not have a separate package housing, but subtly borrows the cover 2 as its package housing. With this arrangement, the volume can be reduced, the installation can be facilitated, the cost can be reduced, and the like.
- the pressure sensor 172 is a differential pressure sensor that is converted into an electrical signal by a differential pressure change across the upper and lower ends of the chip 1771.
- the working principle of the differential pressure sensor It is a technique well known to those skilled in the art and will not be described herein.
- the first housing 3, the second housing 4, and the third housing 5 are machined parts, and are bolted by the upper part. And the bottom is fixed together.
- the first housing 3 includes a first upper surface 31, a first lower surface 32, and a first side surface 33, wherein the first upper surface 31 is provided with a first annular groove 311 and surrounded by the first annular groove 311 The first island portion 312.
- the first annular groove 311 is configured to receive the first sealing ring 73.
- the first lower surface 32 is provided with a second annular groove 325 and a second island portion 326 surrounded by the second annular groove 325.
- the second annular groove 325 is for receiving the second sealing ring 731 (as shown in FIG. 64).
- the first island portion 312 is provided with a first positioning hole 3121 extending through the first upper surface 31 and the first lower surface 32, and a second positioning hole 3122 extending through the first lower surface 32. a first upper surface 31 and a first connection hole 3123 communicating with the inlet passage 15 and a first guide groove 3124 penetrating the first upper surface 31 and communicating with the second positioning hole 3122.
- the urea pump 11 is provided with a first sleeve 76 housed in the first positioning hole 3121 and a second received in the second positioning hole 3122. Bushing 77.
- the first housing 3 further includes an internally threaded hole 317 corresponding to the screw 133.
- the first housing 3 further includes a plurality of first assembly holes 318 through which the bolts 66 pass, the first assembly holes 318 extending through the first upper surface 31 and the first lower surface 32.
- the first upper surface 31 further includes a pressure sensor receiving hole 313 located at a side of the first island portion 312 for receiving the pressure sensor 172 and a temperature sensor receiving hole 314 for receiving the temperature sensor 171. Referring to FIG. 59, the seal ring 1722 on the pressure sensor 172 and the inner wall of the pressure sensor receiving hole 313 are sealed. The pressure sensor 172 is pressed by the sheet portion 61 to achieve fixation.
- first housing 3 is further provided with an outwardly protruding mounting flange 315, and the mounting flange 315 is provided with a second mounting hole 316 corresponding to the first mounting hole 23.
- the bolts 63 are sequentially passed through the second mounting holes 316 and the support posts 631 and fastened in the internal threads of the first mounting holes 23.
- the first casing 3 is provided with a liquid inlet passage 332 extending through the first side surface 33 to be connected to the urea joint 331.
- the first housing 3 is provided with a second connection hole 3127 that penetrates the first lower surface 32 and communicates with the liquid inlet passage 332.
- the first connection hole 3123 and the second connection hole 3127 are both perpendicular to the liquid inlet channel 332.
- the first positioning hole 3121, the second positioning hole 3122, and the second connection hole 3127 each penetrate the second island portion 326 downward.
- the second island portion 326 is also provided with an exit aperture 3126 extending through the first lower surface 32.
- the first lower surface 32 is provided to communicate with the first positioning hole 3121 and the second The first relief groove 321 of the hole 3122 is positioned to ensure pressure balance.
- the first relief groove 321 is located on the second island portion 326.
- the first housing 3 is further provided with a receiving cavity 322 extending downwardly through the first lower surface 32 for receiving at least a portion of the nozzle assembly 19.
- the receiving chamber 322 is in communication with the pressure sensor receiving hole 313.
- the receiving cavity 322 is also in communication with the outlet hole 3126.
- the exit aperture 3126 is sloped inside the first housing 3 and is generally inverted V-shaped.
- the first housing 3 is provided with a second threading hole 323 corresponding to the first threading hole 618.
- the first casing 3 is further provided with an overflow element receiving groove 319 which communicates with the liquid inlet passage 332 and the receiving cavity 322.
- the overflow element receiving groove 319 extends outward through the first side surface 33 to receive the overflow element 173.
- the overflow element 173 is a safety valve in the illustrated embodiment of the invention, the purpose of which is to ensure that the pressure in the high pressure passage in the integrated device 1 is within a safe range by means of pressure relief.
- the first housing 3 is provided with a plug 5122 that fixes the overflow element 173. Referring to FIG.
- the overflow element 173 is provided with a choke hole 1731 that constantly communicates the inlet passage 15 and the outlet passage 16. In this way, on the one hand, the pressure fluctuations of the system can be reduced, in particular when the nozzle assembly 19 is spraying urea; on the other hand, the urea solution can be kept flowing, thereby facilitating heat dissipation of the motor coil 111 and the like.
- the urea joint 331 is in communication with the urea tank 201 through a urea connection pipe 333.
- the exhaust gas aftertreatment system 100 may further be provided with a heating device 334 that heats the urea connection pipe 333.
- the liquid inlet passage 332 extends horizontally into the interior of the first casing 3.
- the liquid inlet channel 332 can also be at an angle.
- the first gear assembly 74 includes a first gear shaft 741 and a first gear 742 fixed to the first gear shaft 741; the second gear assembly 75 includes a second gear shaft. 751 and a second gear 752 fixed to the second gear shaft 751, the first gear 742 and the second gear 752 mesh with each other.
- the first gear 742 is externally meshed with the second gear 752.
- the first gear shaft 741 is a drive shaft
- the second gear shaft 751 is a driven shaft
- the first gear shaft 741 is higher than the second gear shaft 751.
- the upper end of the first gear shaft 741 passes through the first sleeve 76 and is at least partially fixed in the metal frame 720.
- the upper end of the second gear shaft 751 is positioned in the second boss 77.
- the second housing 4 is located below the first housing 3 and is connected to the first housing 3 .
- a plurality of positioning pins 328 are further disposed between the first housing 3 and the second housing 4.
- the second housing 4 includes a second upper surface 41 , a second lower surface 42 , and a second upper surface 41 and a second lower surface 42 for receiving the first gear 742 and the second gear 752 .
- One side of the gear groove 43 is provided with an inlet chamber 431 communicating with the inlet passage 15, and the other side of the gear groove 43 is provided with an outlet chamber 432 communicating with the outlet passage 16.
- the inlet chamber 431 is in communication with the second connection hole 3127, and the upper end of the outlet chamber 432 is in communication with the outlet port 3126.
- the second upper surface 41 of the second housing 4 is provided with a first receiving hole 411 through which the nozzle assembly 19 passes, and the second lower surface 42 is provided with a second receiving hole 421 for positioning the nozzle assembly 19.
- the second receiving hole 421 is larger than the first receiving hole 411 to form a stepped hole.
- the nozzle assembly 19 protrudes upward from the second upper surface 41 and is received in the receiving cavity 322. With this arrangement, a high pressure urea solution can be delivered to the urea nozzle 12.
- the second upper surface 41 is further provided with a third threading hole 412 corresponding to the second threading hole 323.
- the first threading hole 618, the second threading hole 323, and the third threading hole 412 are aligned with each other for the conductive wire 124 of the nozzle assembly 19 to pass through.
- the second housing 4 further includes a plurality of second assembly holes 418 aligned with the first assembly apertures 318.
- the third casing 5 is located below the second casing 4 and is connected to the second casing 4 .
- the third housing 5 includes a body portion 51, a boss portion 52 extending downward from the body portion 51, and a flange 53 extending outward from the body portion 51, wherein the flange 53 is provided with the A plurality of third assembly holes 531 are aligned with the second assembly holes 418 for the bolts 66 to pass through.
- the body portion 51 is provided with a third upper surface 511, and the third upper surface 511 is provided with a third annular groove 512 and a third island portion 513 surrounded by the third annular groove 512.
- the third annular groove 512 is for receiving the third sealing ring 732 (as shown in FIG. 64).
- the third island portion 513 is provided with a third positioning hole 5111 penetrating the third upper surface 511 and a fourth positioning hole 5112 penetrating the third upper surface 511.
- the third housing 5 is provided with a third sleeve 78 received in the third positioning hole 5111 and a fourth sleeve 79 received in the fourth positioning hole 5112 .
- the lower end of the first gear shaft 741 is positioned in the third bushing 78, and the lower end of the second gear shaft 751 is positioned in the fourth bushing 79.
- the third island portion 513 is further provided with a second guiding groove 5114 and a third guiding groove 5115 on the third upper surface 511, wherein the second guiding groove 5114 and the third positioning hole 5111 In communication, the third guiding groove 5115 is in communication with the fourth positioning hole 5112.
- the second guiding groove 5114 and the third guiding groove 5115 are obliquely disposed inside the third housing 5.
- the lower end of the liquid discharge chamber 432 is in communication with both the second flow guiding groove 5114 and the third flow guiding groove 5115.
- the urea solution enters the inlet channel 332 from the urea connection tube 333, a portion of the urea solution enters the metal cover 62 from the first connection hole 3123, and another portion of the urea solution enters the inlet chamber 431 from the second connection hole 3127;
- the urea solution located in the metal cover 62 directly penetrates into the first positioning hole 3121 on the one hand to lubricate the first sleeve 76, and on the other hand, along the first
- the guide groove 3124 penetrates into the second positioning hole 3122 to lubricate the second sleeve 77.
- the urea solution entering the liquid inlet chamber 431 is further divided into two paths, one of which enters the outlet passage 16 after being pressurized by the gear pump, and the other of which enters the third and fourth portions from the second and third flow guiding grooves 5114 and 5115, respectively.
- the positioning holes 5111, 5112 are used to lubricate the third and fourth sleeves 78, 79 to improve the smoothness of the rotation of the gear pump and reduce wear.
- the high pressure urea solution entering the outlet passage 16 enters the containment chamber 322 along the outlet port 3126 to flow to the nozzle assembly 19 while a portion of the urea solution flows to the overflow member 173.
- the overflow element 173 When the pressure is less than the set value of the overflow element 173, the overflow element 173 is closed, communicating only through the choke hole 1731; and when the pressure is greater than the set value of the overflow element 173, the overflow element 173 is opened, part of the urea The solution enters the inlet passage 332 to achieve pressure relief.
- the inlet passage 15 includes a feed passage 332, a second connection port 3127, and an inlet chamber 431. Since the inlet passage 15 is located upstream of the urea pump 11, it is called a low pressure passage.
- the outlet passage 16 includes a liquid outlet chamber 432, an outlet hole 3126, a receiving chamber 322, and the like. Since the outlet passage 16 is located downstream of the urea pump 11, it is referred to as a high pressure passage.
- the nozzle assembly 19 includes a nozzle assembly housing 190 and a urea nozzle 12 that mates with the nozzle assembly housing 190.
- the nozzle assembly housing 190 includes a main body portion 91, an extending portion 92 extending downward from the main body portion 91, and a mounting flange 93 extending outward from the main body portion 91.
- the mounting flange 93 is provided with a plurality of mounting holes 931 for mounting the integrated device 1 to the exhaust pipe 106 or the packaging system 300.
- the main body portion 91 is provided with a fourth upper surface 911 and a fourth side surface 912.
- the fourth upper surface 911 is provided with a receiving cavity 94 for receiving the urea nozzle 12 and a recess 95 for receiving the convex portion 52. Referring to FIG. 55, the receiving cavity 94 extends downward into the extension 92.
- the main body portion 91 is further provided with a cylindrical portion 917 that protrudes upward into the accommodating chamber 94 to support the urea nozzle 12.
- the nozzle assembly housing 190 is also provided with the cooling assembly to cool the urea nozzle 12.
- the cooling assembly is a water cooled assembly.
- a cooling passage 141 located within the nozzle assembly housing 190 includes a first cooling passage 913 extending through the fourth side 912 and a second cooling passage 914 spaced from the first cooling passage 913.
- the first cooling passage 913 is in communication with the inlet joint 103
- the second cooling passage 914 is in communication with the outlet joint 104.
- the nozzle assembly housing 190 is provided with an end cap 96 that seals around the periphery of the extension 92.
- the end cap 96 is welded to the extension 92.
- the nozzle assembly housing 190 forms an annular cooling groove 916 that communicates between the first cooling passage 914 and the second cooling passage 915 between the end cap 96 and the extension portion 92.
- the mounting flange 93 is integrally machined with the body portion 91.
- the mounting flange 93 may also be fabricated separately from the body portion 91 and then welded together.
- the urea nozzle 12 includes a nozzle coil 121, a magnetic portion 81 that interacts with the nozzle coil 121, and a valve needle located below the magnetic portion 81.
- the nozzle coil 121 is wound around the periphery of the magnetic portion 81.
- the urea nozzle 12 further includes a sleeve portion 122 that is sleeved around the periphery of the nozzle coil 121.
- the spring 83 is mounted in the magnetic portion 81 and the valve needle portion 82.
- the valve needle portion 82 is provided with a tapered portion 821 and a valve needle 822 extending downward from the tapered portion 821.
- the valve seat 84 includes a swirling vane 85 welded to the extension portion 92.
- the swirling plate 85 is provided with an injection hole 851 that cooperates with the valve needle 822 and a plurality of swirl grooves 852 that communicate with the injection hole 851. Referring to FIG. 10, FIG. 50 and FIG.
- the upper end of the magnetic portion 81 is sleeved with a fourth sealing ring 812 to seal against the inner wall of the receiving cavity 322, and the lower end of the magnetic portion 81 is sleeved.
- the fifth seal ring 813 is sealed to the inner wall of the accommodating chamber 94.
- the cylindrical portion 917 supports the valve needle portion 82, so that the valve needle portion 82 and the nozzle coil 121 can form a large overlap in the moving direction of the valve needle 822.
- the electromagnetic force generated by the large nozzle coil 121 affects the valve needle portion 82, thereby reducing the drive current, reducing the power consumption of the urea nozzle 12, and reducing the amount of heat generation.
- the accommodating chamber 94 is further provided with a spacer 86 that cooperates with the urea nozzle 12 to adjust a gap between the magnetic portion 81 and the valve needle portion 82. It can be understood that the stroke of the needle portion 82 is closely related to the above-described gap. By adjusting the gap by using the spacers 86 of different thicknesses, the stroke of the needle portion 82 can be accurately controlled to improve the accuracy of the urea nozzle 12.
- the extension portion 92 is provided with a manifold 921, and the valve needle 822 extends into the manifold 921.
- the magnetic portion 81 is provided with a first communication hole 811 communicating with the receiving cavity 322, and the valve needle portion 82 is provided with a second communication hole 823 communicating with the first communication hole 811, the tapered portion
- the 821 is provided with a third communication hole 824 that communicates the second communication hole 823 with the manifold 921.
- the swirl groove 852 is in communication with the manifold 921.
- a lower portion of the sleeve portion 122 is received in the accommodating cavity 94, and a portion of the sleeve portion 122 protruding from the fourth upper surface 911 is received in the accommodating cavity 322.
- the annular cooling groove 916 is located at the periphery of the collecting chamber 921.
- an integrated device is applied to inject fuel into the exhaust of the engine to effect regeneration of the downstream diesel particulate filter (DPF).
- the urea pump 11 can be replaced with a fuel pump, which can be replaced with a fuel nozzle, which can be replaced with a fuel.
- the urea pump and the fuel pump are collectively referred to as a pump, and the urea nozzle and the fuel nozzle are collectively referred to as a nozzle, and the urea solution Liquid and fuel are collectively referred to as fluid media.
- the integrated device 1 of the present invention is an integrated design, which can omit or shorten the prior art urea pipe for connecting the pump and the nozzle, and can also save the prior art pump supply.
- the connectors between the various sensors and the harness in the unit can also be used without the need to heat the defrosting device, so the reliability is high.
- the integrated device 1 of the present invention is compact in structure and small in size, and is convenient for installation of various types of vehicles.
- the internal fluid medium passage is short, the pressure drop is small, the dead volume between the pump and the nozzle is small, and the efficiency is high.
- the temperature sensor 171 and the pressure sensor 172 are close to the nozzle, and the injection pressure accuracy is high.
- the integrated device 1 of the present invention can be water-cooled so that the temperature of the urea remaining in the integrated device 1 does not reach the crystallization point, and crystallization is less likely to occur.
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- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
A pump and nozzle integrated apparatus, comprising a pump assembly (18) and a nozzle assembly (19). The pump assembly (18) comprises a pump assembly shell (180) and a pump (11) matching the pump assembly shell. The pump assembly shell (180) comprises an inlet channel (15) and an outlet channel (16), the outlet channel (16) being in communication with the nozzle assembly (18). The pump assembly (18) comprises a cover (2), a motor coil (111) used for driving the pump, a magnetic body (72), and a first gear assembly (74) and a second gear assembly (75) engaged with one another, the magnetic body (72) and an elastic body (71) respectively being sleeved over the upper and lower ends of a metal framework (720), the tail end of the metal framework (720) being provided with a hook part (74) abutting the elastic body. The nozzle assembly (19) comprises a nozzle assembly shell (190), a nozzle (12), and a nozzle coil (121) used for driving the nozzle. The motor coil (111) and the nozzle coil (121) are respectively independently controlled. Also disclosed is an exhaust gas post-processing system comprising the integrated apparatus, and a control method for the integrated apparatus. The integrated apparatus has the advantages of a simple and compact structure and easy assembly.
Description
本申请要求了申请日为2016年6月6日、申请号为201610393827.2、发明名称为“集成装置、尾气后处理***以及控制方法”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。The present application claims the priority of the Chinese patent application filed on June 6, 2016, the application number is 201610393827.2, and the invention is entitled "integrated device, exhaust gas aftertreatment system, and control method", the entire contents of which are incorporated herein by reference. In the application.
本发明涉及一种集成装置、尾气后处理***以及控制方法,属于发动机尾气后处理技术领域。The invention relates to an integrated device, an exhaust gas aftertreatment system and a control method, and belongs to the technical field of engine exhaust aftertreatment.
随着内燃机汽车的排放标准越来越严,为了降低排气中氮氧化合物等有害物质,目前业界通常采用的后处理技术是选择性催化还原(SCR),并在SCR的上游安装向排气中喷射尿素溶液。尿素溶液发生水解、热解产生氨气,并与氮氧化合物等发生化学反应,进而降低有害物质的浓度。As the emission standards of internal combustion engine vehicles become more and more strict, in order to reduce harmful substances such as nitrogen oxides in the exhaust gas, the post-treatment technology commonly used in the industry is selective catalytic reduction (SCR), and the exhaust gas is installed upstream of the SCR. The urea solution is sprayed in. The urea solution is hydrolyzed and pyrolyzed to generate ammonia gas, and chemically reacts with nitrogen oxides to reduce the concentration of harmful substances.
目前市场上的尿素喷射***通常包括空气辅助***和非空气辅助***。当然,无论哪种***均包括尿素箱总成、通过低压管道与所述尿素箱总成相连的泵供给单元、通过高压管道与泵供给单元相连的喷嘴模块以及控制器。泵供给单元中包括尿素泵以及压力传感器等,喷嘴模块包括尿素喷嘴等。尿素泵与尿素喷嘴间隔较远的距离,并通过尿素管相连。另外,现有的尿素喷射***包含较多的零部件,安装复杂,成本较高。Urea injection systems currently on the market typically include air assist systems and non-air assist systems. Of course, any system includes a urea tank assembly, a pump supply unit connected to the urea tank assembly through a low pressure line, a nozzle module connected to the pump supply unit through a high pressure line, and a controller. The pump supply unit includes a urea pump, a pressure sensor, and the like, and the nozzle module includes a urea nozzle or the like. The urea pump is spaced farther from the urea nozzle and is connected by a urea tube. In addition, the existing urea injection system contains many components, and the installation is complicated and the cost is high.
因此,亟需提供一种新型的技术方案。Therefore, there is an urgent need to provide a new type of technical solution.
发明内容Summary of the invention
本发明的目的在于提供一种控制比较精确的集成装置、尾气后处理***以及控制方法。It is an object of the present invention to provide an integrated device, an exhaust aftertreatment system, and a control method that are relatively precise in control.
为实现上述目的,本发明采用如下技术方案:To achieve the above object, the present invention adopts the following technical solutions:
一种泵与喷嘴的集成装置,其中所述泵用以向所述喷嘴泵送流体介质,所述喷嘴用以向发动机的排气中喷射该流体介质,所述集成装置包括泵组件以及喷嘴组件;所述泵组件包括泵组件壳体以及与所述泵组件壳体相配合的所述泵,所述泵组件壳体包括位于所述泵的上游且与所述泵连通的入口通道以及位于所述泵的下游且与所述泵连通的出口通道,所述出口通道与所述喷嘴组件
连通;所述泵组件包括用以驱动所述泵的电机线圈、与所述电机线圈相互作用的磁性体、位于所述磁性体下方的弹性体、***述磁性体与所述弹性体的金属罩以及相互啮合的第一齿轮组件与第二齿轮组件,其中所述磁性体与所述弹性体分别套接在金属骨架的上、下两端,所述金属骨架的末端设有与所述弹性体相抵压的勾部;所述第一齿轮组件包括第一齿轮轴以及第一齿轮,所述第二齿轮组件包括第二齿轮轴以及第二齿轮,所述第一齿轮与所述第二齿轮相互啮合;所述喷嘴组件包括喷嘴组件壳体以及与所述喷嘴组件壳体相配合的所述喷嘴,所述喷嘴组件还包括用以驱动所述喷嘴的喷嘴线圈,其中所述电机线圈与所述喷嘴线圈分别进行独立控制。An integrated pump and nozzle device, wherein the pump is for pumping a fluid medium to the nozzle, the nozzle for injecting the fluid medium into an exhaust of an engine, the integrated device comprising a pump assembly and a nozzle assembly The pump assembly includes a pump assembly housing and the pump cooperating with the pump assembly housing, the pump assembly housing including an inlet passage upstream of the pump and in communication with the pump and located at the An outlet passage downstream of the pump and in communication with the pump, the outlet passage and the nozzle assembly
The pump assembly includes a motor coil for driving the pump, a magnetic body interacting with the motor coil, an elastic body located under the magnetic body, and a metal housing the magnetic body and the elastic body a cover and an intermeshing first gear assembly and a second gear assembly, wherein the magnetic body and the elastic body are respectively sleeved on upper and lower ends of the metal skeleton, and the end of the metal skeleton is provided with the elasticity a body-fitting hook; the first gear assembly includes a first gear shaft and a first gear, the second gear assembly includes a second gear shaft and a second gear, the first gear and the second gear Intermeshing; the nozzle assembly includes a nozzle assembly housing and the nozzle cooperating with the nozzle assembly housing, the nozzle assembly further including a nozzle coil for driving the nozzle, wherein the motor coil and The nozzle coils are independently controlled.
作为本发明进一步改进的技术方案,所述泵为尿素泵,所述喷嘴为尿素喷嘴,所述流体介质为尿素溶液。As a further improved technical solution of the present invention, the pump is a urea pump, the nozzle is a urea nozzle, and the fluid medium is a urea solution.
作为本发明进一步改进的技术方案,所述泵为燃料泵,所述喷嘴为燃料喷嘴,所述流体介质为燃料。As a further improved technical solution of the present invention, the pump is a fuel pump, the nozzle is a fuel nozzle, and the fluid medium is a fuel.
作为本发明进一步改进的技术方案,所述集成装置包括与所述电机线圈以及所述喷嘴线圈连接的控制器,所述控制器分别对所述尿素泵以及所述尿素喷嘴进行独立控制。As a further improved technical solution of the present invention, the integrated device includes a controller connected to the motor coil and the nozzle coil, and the controller independently controls the urea pump and the urea nozzle, respectively.
作为本发明进一步改进的技术方案,所述集成装置包括与所述出口通道连通的压力传感器以及连接在所述出口通道与所述入口通道之间的溢流元件。As a further improved technical solution of the present invention, the integrated device includes a pressure sensor in communication with the outlet passage and an overflow element connected between the outlet passage and the inlet passage.
作为本发明进一步改进的技术方案,所述集成装置包括安装在所述泵组件壳体内的温度传感器。As a further improved technical solution of the present invention, the integrated device includes a temperature sensor installed in the casing of the pump assembly.
作为本发明进一步改进的技术方案,所述泵组件包括***述磁性体与所述弹性体的金属罩,所述电机线圈套接在所述金属罩的***;所述第一齿轮轴为主动轴,所述第二齿轮轴为从动轴,所述第一齿轮轴高于所述第二齿轮轴。As a further improved technical solution of the present invention, the pump assembly includes a metal cover for housing the magnetic body and the elastic body, the motor coil is sleeved on a periphery of the metal cover; the first gear shaft is active a shaft, the second gear shaft is a driven shaft, and the first gear shaft is higher than the second gear shaft.
作为本发明进一步改进的技术方案,所述弹性体能够被压缩以吸收因尿素结冰所产生的膨胀体积。As a further improved technical solution of the present invention, the elastomer can be compressed to absorb the expanded volume generated by the urea icing.
作为本发明进一步改进的技术方案,所述泵组件壳体设有***述第一齿轮与所述第二齿轮的齿轮槽,所述第一齿轮与所述第二齿轮外啮合,所述齿轮槽的一侧设有与所述入口通道连通的进液腔,所述齿轮槽的另一侧设有与所述出口通道连通的出液腔。As a further improved technical solution of the present invention, the pump assembly housing is provided with a gear slot for receiving the first gear and the second gear, and the first gear is externally meshed with the second gear, the gear One side of the groove is provided with a liquid inlet chamber communicating with the inlet passage, and the other side of the gear groove is provided with an outlet chamber communicating with the outlet passage.
作为本发明进一步改进的技术方案,所述喷嘴组件包括与所述喷嘴线圈相互作用的磁性部、位于所述磁性部下方的阀针部、作用在所述磁性部与所述阀针部之间的弹簧以及与所述阀针部配合
的阀座。As a further improved technical solution of the present invention, the nozzle assembly includes a magnetic portion that interacts with the nozzle coil, a valve needle portion located below the magnetic portion, and acts between the magnetic portion and the valve needle portion Spring and the valve needle
Valve seat.
作为本发明进一步改进的技术方案,所述喷嘴线圈位于所述磁性部的***,所述阀针部设有阀针,所述阀座设有与所述阀针相配合的喷射孔。As a further improvement of the present invention, the nozzle coil is located at a periphery of the magnetic portion, the valve needle portion is provided with a valve needle, and the valve seat is provided with an injection hole that cooperates with the valve needle.
作为本发明进一步改进的技术方案,所述阀座包括焊接在所述喷嘴组件壳体上的旋流片,所述喷射孔设置在所述旋流片上,并且所述旋流片还设有与所述喷射孔连通的若干旋流槽。As a further improved technical solution of the present invention, the valve seat includes a swirling fin welded on the nozzle assembly housing, the injection hole is disposed on the swirling sheet, and the swirling fin is further provided with The swirl holes are connected by the injection holes.
作为本发明进一步改进的技术方案,所述集成装置设有用以冷却所述尿素喷嘴的冷却组件,所述冷却组件通过冷却介质对所述尿素喷嘴进行冷却。As a further improved technical solution of the present invention, the integrated device is provided with a cooling assembly for cooling the urea nozzle, and the cooling assembly cools the urea nozzle by a cooling medium.
作为本发明进一步改进的技术方案,所述泵组件壳体包括第一壳体、位于所述第一壳体下方的第二壳体以及位于所述第二壳体下方的第三壳体,所述第三壳体包括本体部以及自所述本体部向下延伸的凸起部;所述喷嘴组件壳体包括主体部以及自所述主体部向下延伸的延伸部,所述主体部设有***述尿素喷嘴的容纳腔以及***述凸起部的凹槽,所述容纳腔向下延伸入所述延伸部内。As a further improved technical solution of the present invention, the pump assembly housing includes a first housing, a second housing under the first housing, and a third housing under the second housing. The third housing includes a body portion and a protrusion extending downward from the body portion; the nozzle assembly housing includes a body portion and an extension portion extending downward from the body portion, the body portion being provided And a receiving cavity for receiving the urea nozzle and a groove for receiving the convex portion, the receiving cavity extending downward into the extending portion.
作为本发明进一步改进的技术方案,所述第一壳体包括第一上表面、第一下表面以及第一侧面,其中所述第一上表面设有第一环形槽、被所述第一环形槽包围的第一岛部以及收容在所述第一环形槽中的第一密封圈;所述第一岛部设有贯穿所述第一上表面与所述第一下表面的第一定位孔以及贯穿所述第一下表面的第二定位孔,所述尿素泵包括收容在所述第一定位孔中的第一轴套以及收容在所述第二定位孔中的第二轴套,其中所述第一齿轮轴***所述第一轴套中,所述第二齿轮轴***所述第二轴套中。As a further improved technical solution of the present invention, the first housing includes a first upper surface, a first lower surface, and a first side, wherein the first upper surface is provided with a first annular groove, and the first ring a first island portion surrounded by the groove and a first sealing ring received in the first annular groove; the first island portion is provided with a first positioning hole penetrating the first upper surface and the first lower surface And a second positioning hole extending through the first lower surface, the urea pump includes a first sleeve received in the first positioning hole and a second sleeve received in the second positioning hole, wherein The first gear shaft is inserted into the first bushing, and the second gear shaft is inserted into the second bushing.
作为本发明进一步改进的技术方案,所述第一下表面设有连通所述第一定位孔与所述第二定位孔的第一泄荷槽。As a further improvement of the present invention, the first lower surface is provided with a first relief groove that communicates with the first positioning hole and the second positioning hole.
作为本发明进一步改进的技术方案,所述第一岛部还包括贯穿所述第一上表面且与所述第二定位孔连通的第一导流槽以及贯穿所述第一上表面且与入口通道连通的第一连接孔;所述第一壳体设有贯穿所述第一下表面且与所述进液腔连通的第二连接孔以及贯穿所述第一下表面且与所述出液腔连通的出口孔。As a further improvement of the technical solution of the present invention, the first island portion further includes a first guiding groove extending through the first upper surface and communicating with the second positioning hole, and the first upper surface and the inlet a first connecting hole communicating with the passage; the first housing is provided with a second connecting hole penetrating the first lower surface and communicating with the liquid inlet chamber, and penetrating the first lower surface and the liquid discharging An exit hole that communicates with the cavity.
作为本发明进一步改进的技术方案,所述第一壳体设有与所述出口孔连通的溢流元件收容槽,所述溢流元件安装在所述溢流元件收容槽内;当出口通道的压力高于设定值时,所述溢流元件打开以将部分尿素溶液返回到所述入口通道内。
As a further improvement of the technical solution of the present invention, the first housing is provided with an overflow element receiving groove communicating with the outlet hole, the overflow element is installed in the overflow element receiving groove; when the outlet passage is When the pressure is above a set value, the overflow element opens to return a portion of the urea solution to the inlet passage.
作为本发明进一步改进的技术方案,所述第二壳体包括第二上表面以及第二下表面,所述齿轮槽贯穿所述第二上表面与第二下表面。As a further improvement of the present invention, the second housing includes a second upper surface and a second lower surface, and the gear groove extends through the second upper surface and the second lower surface.
作为本发明进一步改进的技术方案,所述本体部设有第三上表面,所述第三上表面设有第三环形槽以及被所述第三环形槽包围的第三岛部,所述第三岛部设有贯穿所述第三上表面的第三定位孔以及第四定位孔,所述第三定位孔与所述第四定位孔延伸入所述凸起部中;所述尿素泵包括收容在所述第三定位孔中的第三轴套以及收容在所述第四定位孔中的第四轴套,其中所述第一齿轮轴***所述第三轴套中,所述第二齿轮轴***所述第四轴套中。As a further improvement of the technical solution of the present invention, the body portion is provided with a third upper surface, the third upper surface is provided with a third annular groove and a third island portion surrounded by the third annular groove, the The three island portion is provided with a third positioning hole penetrating the third upper surface and a fourth positioning hole, and the third positioning hole and the fourth positioning hole extend into the convex portion; the urea pump includes a third bushing received in the third positioning hole and a fourth bushing received in the fourth positioning hole, wherein the first gear shaft is inserted into the third bushing, the second A gear shaft is inserted into the fourth bushing.
作为本发明进一步改进的技术方案,所述第三岛部设有贯穿所述第三上表面的第二导流槽以及第三导流槽,其中所述第二导流槽与所述第三定位孔连通,所述第三导流槽与所述第四定位孔连通。As a further improved technical solution of the present invention, the third island portion is provided with a second guiding groove and a third guiding groove extending through the third upper surface, wherein the second guiding groove and the third The positioning holes are in communication, and the third guiding grooves are in communication with the fourth positioning holes.
作为本发明进一步改进的技术方案,所述喷嘴组件壳体设有第一冷却通道、与所述第一冷却通道间隔设置的第二冷却通道以及密封在所述延伸部***的端盖,所述喷嘴组件壳体在所述端盖与所述延伸部之间形成了连通所述第一冷却通道与所述第二冷却通道的环形冷却槽,所述第一冷却通道与入口接头连接用以供发动机冷却液注入,所述第二冷却通道与出口接头连接用以供发动机冷却液流出。As a further improved technical solution of the present invention, the nozzle assembly housing is provided with a first cooling passage, a second cooling passage spaced apart from the first cooling passage, and an end cover sealed at a periphery of the extension portion, The nozzle assembly housing forms an annular cooling groove connecting the first cooling passage and the second cooling passage between the end cover and the extending portion, and the first cooling passage is connected with the inlet joint for supplying An engine coolant injection is provided, the second cooling passage being coupled to the outlet joint for engine coolant to flow out.
作为本发明进一步改进的技术方案,所述勾部设有易于将所述弹性体套接到所述金属骨架上的导引锥面。As a further improved technical solution of the present invention, the hook portion is provided with a guiding tapered surface which is easy to sleeve the elastic body to the metal skeleton.
作为本发明进一步改进的技术方案,所述金属骨架设有位于所述弹性体与所述磁性体之间的分隔板,所述金属骨架整体上呈中空的筒状,所述第一齿轮轴至少部分收容在所述金属骨架中。As a further improved technical solution of the present invention, the metal skeleton is provided with a partition plate between the elastic body and the magnetic body, and the metal skeleton is hollow in a tubular shape as a whole, and the first gear shaft At least partially contained in the metal skeleton.
作为本发明进一步改进的技术方案,所述弹性体设有径向延伸的装配孔,所述金属骨架设有对应于所述装配孔的固定孔,所述第一齿轮轴的上端通过安装在所述装配孔以及所述固定孔中的螺钉与所述金属骨架实现径向固定。As a further improved technical solution of the present invention, the elastic body is provided with a radially extending mounting hole, and the metal skeleton is provided with a fixing hole corresponding to the mounting hole, and the upper end of the first gear shaft is mounted at the The assembly hole and the screw in the fixing hole are radially fixed to the metal skeleton.
本发明还揭示了如下技术方案:The invention also discloses the following technical solutions:
一种尾气后处理***,包括尾气后处理的喷射***以及尾气后处理的封装***,其中所述喷射***包括前述的集成装置,所述封装***包括位于所述集成装置下游的载体。An exhaust aftertreatment system includes an exhaust aftertreatment exhaust system and an exhaust aftertreatment packaging system, wherein the injection system includes the aforementioned integrated device, the package system including a carrier downstream of the integrated device.
本发明还揭示了如下技术方案:The invention also discloses the following technical solutions:
一种集成装置的控制方法,所述集成装置为前述的集成装置,所述控制方法包括:
A control method of an integrated device, the integrated device being the aforementioned integrated device, the control method comprising:
驱动所述泵运转,通过所述入口通道将所述流体介质吸入所述泵;Driving the pump to operate, drawing the fluid medium into the pump through the inlet passage;
经过所述泵的加压之后,通过所述出口通道将该流体介质输送至所述喷嘴;After the pump is pressurized, the fluid medium is delivered to the nozzle through the outlet passage;
当达到喷射条件时,给所述喷嘴线圈通电,至少部分打开所述喷嘴以将该流体介质喷入所述发动机的排气中;其中:When the injection condition is reached, energizing the nozzle coil, at least partially opening the nozzle to inject the fluid medium into the exhaust of the engine; wherein:
所述电机线圈与所述喷嘴线圈分别进行独立控制。The motor coil and the nozzle coil are independently controlled.
相较于现有技术,本发明泵与喷嘴的集成装置很好的将泵与喷嘴集成在一起,结构简单、紧凑,极大地方便了客户的安装。另外,通过对电机线圈以及喷嘴线圈分别进行独立控制,从而避免了泵与喷嘴之间的相互干扰,提高了控制的精确性。在集成装置集成了尿素泵与尿素喷嘴的基础上,由于控制精度的提高,能够使喷入排气中的尿素的量与氮氧化合物达到合适的比例,降低了因过多喷射尿素而产生的结晶风险。另外,通过将磁性体与弹性体分别套接在金属骨架的上、下两端,且金属骨架的末端设有与弹性体相抵压的勾部,降低了零件的数量,便于零件的组装。Compared with the prior art, the integrated device of the pump and the nozzle of the invention integrates the pump and the nozzle well, and has a simple and compact structure, which greatly facilitates the installation of the customer. In addition, by independently controlling the motor coil and the nozzle coil, mutual interference between the pump and the nozzle is avoided, and the accuracy of the control is improved. On the basis of the integration of the urea pump and the urea nozzle in the integrated device, due to the improvement of the control precision, the amount of urea injected into the exhaust gas can be appropriately proportioned with the nitrogen oxides, thereby reducing the excessive injection of urea. Risk of crystallization. In addition, by placing the magnetic body and the elastic body on the upper and lower ends of the metal skeleton, respectively, and the end of the metal skeleton is provided with a hook portion that is pressed against the elastic body, the number of parts is reduced, and the assembly of the parts is facilitated.
图1是本发明的尾气后处理***应用在处理发动机尾气时的原理图。BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic diagram of the exhaust gas aftertreatment system of the present invention applied to the treatment of engine exhaust.
图2是图1中集成装置的原理图。Figure 2 is a schematic diagram of the integrated device of Figure 1.
图3是本发明的集成装置在一种实施方式中的立体示意图。3 is a perspective view of an integrated device of the present invention in an embodiment.
图4是图3另一角度的立体示意图。Figure 4 is a perspective view of another angle of Figure 3.
图5是图3再一角度的立体示意图。Figure 5 is a perspective view of another angle of Figure 3.
图6是图3的主视图。Figure 6 is a front elevational view of Figure 3.
图7是图3的右视图。Figure 7 is a right side view of Figure 3.
图8是图5的仰视图。Fig. 8 is a bottom view of Fig. 5;
图9是图5的俯视图。Figure 9 is a plan view of Figure 5.
图10是本发明集成装置的部分立体分解图,其中泵组件与喷嘴组件分离开来。Figure 10 is a partial perspective exploded view of the integrated device of the present invention with the pump assembly separated from the nozzle assembly.
图11是图10中泵组件的部分立体分解图,其中罩壳、电机线圈以及防水透气盖被分离出来。Figure 11 is a partially exploded perspective view of the pump assembly of Figure 10 with the housing, motor coil and venting cover separated.
图12是图11中罩壳与电机线圈组装在一起的立体示意图。Figure 12 is a perspective view of the housing of Figure 11 assembled with the motor coil.
图13是图12的立体分解图。Figure 13 is an exploded perspective view of Figure 12 .
图14是图11进一步的立体分解图,其中控制板被分离出来。
Figure 14 is a further exploded perspective view of Figure 11 with the control panel separated.
图15是去除图14中的罩壳以及控制板后的立体分解图,其中连接板组件被分离出来。Figure 15 is an exploded perspective view showing the cover of Figure 14 and the control panel removed, wherein the connector assembly is separated.
图16是图15中连接板组件的立体图。Figure 16 is a perspective view of the connecting plate assembly of Figure 15.
图17是图15中连接板组件的立体分解图。Figure 17 is an exploded perspective view of the connecting plate assembly of Figure 15.
图18是图15进一步的立体分解图,其中磁性体、弹性体以及螺钉被分离出来。Figure 18 is a further exploded perspective view of Figure 15 with the magnetic body, elastomer and screws separated.
图19是图18进一步的立体分解图,其中第一密封圈、温度传感器以及压力传感器被分离出来。Figure 19 is a further exploded perspective view of Figure 18 with the first seal ring, temperature sensor and pressure sensor separated.
图20是图19中磁性体、弹性体以及螺钉等的立体分解图。Fig. 20 is an exploded perspective view showing the magnetic body, the elastic body, the screw, and the like in Fig. 19;
图21是图20在组装后沿某一角度的剖面示意图。Figure 21 is a schematic cross-sectional view of Figure 20 taken along an angle after assembly.
图22是图19中压力传感器的立体示意图。Figure 22 is a perspective view of the pressure sensor of Figure 19.
图23是图22另一角度的立体示意图。Figure 23 is a perspective view of another angle of Figure 22.
图24是图22的立体分解图。Figure 24 is an exploded perspective view of Figure 22 .
图25是沿图22中C-C线的剖面示意图。Figure 25 is a cross-sectional view taken along line C-C of Figure 22.
图26是去除图19中的第一密封圈、温度传感器以及压力传感器等后的部分立体分解图,其中第一壳体被分离出来。Fig. 26 is a partially exploded perspective view showing the first seal ring, the temperature sensor, the pressure sensor, and the like in Fig. 19, wherein the first casing is separated.
图27是图26中第一壳体的立体分解图。Figure 27 is an exploded perspective view of the first housing of Figure 26.
图28是图27于另一角度的立体分解图。Figure 28 is an exploded perspective view of Figure 27 at another angle.
图29是图27中部分第一壳体的立体图。Figure 29 is a perspective view of a portion of the first housing of Figure 27.
图30是图29于另一角度的立体图。Figure 30 is a perspective view of Figure 29 at another angle.
图31是图30的俯视图。Figure 31 is a plan view of Figure 30.
图32是沿图31中D-D线的剖面示意图。Figure 32 is a cross-sectional view taken along line D-D of Figure 31.
图33是沿图31中E-E线的剖面示意图。Figure 33 is a schematic cross-sectional view taken along line E-E of Figure 31.
图34是沿图31中F-F线的剖面示意图。Figure 34 is a cross-sectional view taken along line F-F of Figure 31.
图35是图29的俯视图。Figure 35 is a plan view of Figure 29.
图36是沿图35中G-G线的剖面示意图。Figure 36 is a schematic cross-sectional view taken along line G-G of Figure 35.
图37是沿图35中H-H线的剖面示意图。Figure 37 is a cross-sectional view taken along line H-H of Figure 35.
图38是沿图35中I-I线的剖面示意图。Figure 38 is a cross-sectional view taken along line I-I of Figure 35.
图39是去除图26中的第一壳体后的立体图。
Figure 39 is a perspective view of the first housing of Figure 26 removed.
图40是图39的部分立体分解图,其中第一齿轮组件与第二齿轮组件被分离出来。Figure 40 is a partial exploded perspective view of Figure 39 with the first gear assembly and the second gear assembly separated.
图41是图39的俯视图。41 is a plan view of FIG. 39.
图42是去除图40中的第一齿轮组件与第二齿轮组件之后的立体分解图。42 is an exploded perspective view of the first gear assembly and the second gear assembly of FIG. 40 after removal.
图43是图42中第二壳体的立体示意图。Figure 43 is a perspective view of the second housing of Figure 42.
图44是图43另一角度的立体示意图。Figure 44 is a perspective view showing another angle of Figure 43.
图45是图42中第三壳体组件的立体示意图。Figure 45 is a perspective view of the third housing assembly of Figure 42.
图46是图45的俯视图。Figure 46 is a plan view of Figure 45.
图47是沿图46中J-J线的剖面示意图。Figure 47 is a cross-sectional view taken along line J-J of Figure 46.
图48是沿图46中K-K线的剖面示意图。Figure 48 is a schematic cross-sectional view taken along line K-K of Figure 46.
图49是本发明喷嘴组件的部分立体分解图。Figure 49 is a partially exploded perspective view of the nozzle assembly of the present invention.
图50是图49中尿素喷嘴的部分立体分解图。Figure 50 is a partially exploded perspective view of the urea nozzle of Figure 49.
图51是图49中喷嘴组件壳体的立体示意图。Figure 51 is a perspective view of the nozzle assembly housing of Figure 49.
图52是图51的部分立体分解图。Figure 52 is a partially exploded perspective view of Figure 51.
图53是图52中部分喷嘴组件壳体的俯视图。Figure 53 is a top plan view of a portion of the nozzle assembly housing of Figure 52.
图54是沿图53中L-L线的剖面示意图。Figure 54 is a schematic cross-sectional view taken along line L-L of Figure 53.
图55是沿图54中M-M线的剖面示意图。Figure 55 is a schematic cross-sectional view taken along line M-M of Figure 54.
图56是沿图54中N-N线的剖面示意图。Figure 56 is a schematic cross-sectional view taken along line N-N of Figure 54.
图57是图53另一角度的立体图。Figure 57 is a perspective view of another angle of Figure 53.
图58是本发明集成装置的立体分解图。Figure 58 is an exploded perspective view of the integrated device of the present invention.
图59是沿图9中A-A线的剖面示意图。Figure 59 is a schematic cross-sectional view taken along line A-A of Figure 9.
图60是沿图59中O-O线的剖面示意图。Figure 60 is a schematic cross-sectional view taken along line O-O of Figure 59.
图61是沿图59中P-P线的剖面示意图。Figure 61 is a schematic cross-sectional view taken along line P-P of Figure 59.
图62是沿图60中Q-Q线的剖面示意图。Figure 62 is a cross-sectional view taken along line Q-Q of Figure 60.
图63是沿图61中R-R线的剖面示意图。Figure 63 is a schematic cross-sectional view taken along line R-R of Figure 61.
图64是沿图9中B-B线的剖面示意图。Figure 64 is a cross-sectional view taken along line B-B of Figure 9.
图65是沿图64中S-S线的剖面示意图。Figure 65 is a schematic cross-sectional view taken along line S-S of Figure 64.
请参图1所示,本发明揭示了一种尾气后处理***100,能够应用于处理发动机10的尾气,降低有害物质的排放以满足排放法规的要求。所述尾气后处理***100包括尾气后处理的喷射***200以及尾气后处理的封装***300,其中所述喷射***200包括用以从尿素箱201中泵送尿素溶液(参箭头X所示)以及向所述发动机10的排气(例如向排气管106或者封装***300内)中喷射尿素溶液的集成装置1;所述封装***300包括位于所述集成装置1下游的混合器301以及位于所述混合器301下游的载体302。当然,在某些实施方式中也可以不设置混合器,或者设置两个或者两个以上的混合器。所述载体302可以例如是选择性催化还原(SCR)等。Referring to FIG. 1, the present invention discloses an exhaust aftertreatment system 100 that can be applied to treat exhaust gas from engine 10 to reduce emissions of hazardous materials to meet emission regulations. The exhaust aftertreatment system 100 includes an exhaust aftertreatment injection system 200 and an exhaust aftertreatment packaging system 300, wherein the injection system 200 includes means for pumping urea solution from the urea tank 201 (as indicated by arrow X) and An integrated device 1 that injects urea solution into the exhaust of the engine 10 (eg, into the exhaust pipe 106 or within the packaging system 300); the packaging system 300 includes a mixer 301 located downstream of the integrated device 1 and located at the The carrier 302 downstream of the mixer 301 is described. Of course, in some embodiments, the mixer may not be provided, or two or more mixers may be provided. The carrier 302 can be, for example, a selective catalytic reduction (SCR) or the like.
所述发动机10具有发动机冷却液循环回路。请参图1所示,在本发明图示的实施方式中,所述发动机冷却液循环回路包括第一循环回路101(参粗箭头Y所示)以及第二循环回路102(参细箭头Z所示),其中所述第一循环回路101用以冷却所述集成装置1,以降低其被高温的发动机排气烧坏的风险;所述第二循环回路102用以加热所述尿素箱201,以实现加热解冻功能。可以理解的是,在第一循环回路101中,所述集成装置1设有供发动机冷却液流入的入口接头103以及供发动机冷却液流出的出口接头104;在第二循环回路102中,其设有控制阀105,以在适宜的条件下打开或者关闭所述控制阀105,实现对第二循环回路102的控制。所述尿素箱201中设有连接在所述第二循环回路102中的加热棒202,以利用发动机冷却液的温度对尿素溶液进行加热解冻。The engine 10 has an engine coolant circulation circuit. Referring to FIG. 1, in the illustrated embodiment of the present invention, the engine coolant circulation circuit includes a first circulation circuit 101 (shown by a thick arrow Y) and a second circulation circuit 102 (refer to a thin arrow Z). The first circulation loop 101 is configured to cool the integrated device 1 to reduce its risk of being burned out by a high temperature engine exhaust; the second circulation loop 102 is used to heat the urea tank 201, To achieve the heating and defrosting function. It can be understood that, in the first circulation loop 101, the integrated device 1 is provided with an inlet joint 103 for the engine coolant to flow in and an outlet joint 104 for the engine coolant to flow out; in the second circulation loop 102, it is provided There is a control valve 105 to open or close the control valve 105 under suitable conditions to effect control of the second circulation loop 102. The urea tank 201 is provided with a heating rod 202 connected to the second circulation loop 102 to heat and thaw the urea solution by using the temperature of the engine coolant.
以下就本发明的集成装置1进行详细描述。The integrated device 1 of the present invention will be described in detail below.
请参图2所示,从原理上看,本发明的集成装置1集成了尿素泵11与尿素喷嘴12的功能。所述尿素泵11包括但不限于齿轮泵、膜片泵、柱塞泵或者叶片泵等。应该理解的是,在此使用的术语“集成”指的是尿素泵11与尿素喷嘴12可以作为单一装置被安装在排气管上;或者尿素泵11与尿素喷嘴12相互靠近并通过较短的连接管道进行连接,在整体上可以被视为一个装置。Referring to FIG. 2, in principle, the integrated device 1 of the present invention integrates the functions of the urea pump 11 and the urea nozzle 12. The urea pump 11 includes, but is not limited to, a gear pump, a diaphragm pump, a plunger pump, a vane pump, and the like. It should be understood that the term "integrated" as used herein means that the urea pump 11 and the urea nozzle 12 can be mounted as a single unit on the exhaust pipe; or the urea pump 11 and the urea nozzle 12 are close to each other and pass through a shorter one. The connecting pipe is connected and can be regarded as a device as a whole.
另外,为了对尿素泵11以及尿素喷嘴12进行独立控制,本发明的尾气后处理***100还设有控制器13。可以理解,所述控制器13可以与所述集成装置1集成在一起或者与所述集成装置1分开设置。请参图2所示,在本发明图示的实施方式中,所述控制器13集成在所述集成装置1内,以实现零件的高度集成化,提高客户端的安装便利性。Further, in order to independently control the urea pump 11 and the urea nozzle 12, the exhaust gas post-treatment system 100 of the present invention is further provided with a controller 13. It will be appreciated that the controller 13 may be integrated with or separate from the integrated device 1. Referring to FIG. 2, in the illustrated embodiment of the present invention, the controller 13 is integrated in the integrated device 1 to achieve high integration of parts and improve installation convenience of the client.
所述集成装置1设有用以容纳所述尿素泵11与所述尿素喷嘴12的壳体14。图2所示的实施方式仅是对壳体14的粗略显示。例如,在一种实施方式中,所述壳体14由尿素泵11以及尿素
喷嘴12共享;在另一种实施方式中,所述壳体14被区分为与尿素泵11相配合的第一壳体以及与尿素喷嘴12相配合的第二壳体,第一壳体与第二壳体装配在一起,以形成一个整体。所述壳体14设有连接在所述尿素箱201与所述尿素泵11之间的入口通道15以及连接在所述尿素泵11与所述尿素喷嘴12之间的出口通道16。需要说明的是,这里使用的术语“入口通道15”中的“入口”与“出口通道16”中的“出口”是以尿素泵11作为参照,即尿素泵11的上游为入口,尿素泵11的下游为出口。所述出口通道16与所述尿素喷嘴12连通,以向所述尿素喷嘴12泵送尿素溶液。可以理解的是,所述入口通道15位于尿素泵11的上游,为低压通道;所述出口通道16位于尿素泵11的下游,为高压通道。The integrated device 1 is provided with a housing 14 for accommodating the urea pump 11 and the urea nozzle 12. The embodiment shown in Figure 2 is only a rough representation of the housing 14. For example, in one embodiment, the housing 14 is comprised of a urea pump 11 and urea.
The nozzle 12 is shared; in another embodiment, the housing 14 is divided into a first housing that cooperates with the urea pump 11 and a second housing that cooperates with the urea nozzle 12, the first housing and the first housing The two housings are assembled together to form a unitary body. The housing 14 is provided with an inlet passage 15 connected between the urea tank 201 and the urea pump 11, and an outlet passage 16 connected between the urea pump 11 and the urea nozzle 12. It should be noted that the term "inlet" in the "inlet passage 15" and "outlet" in the "outlet passage 16" are referenced by the urea pump 11, that is, the upstream of the urea pump 11 is the inlet, and the urea pump 11 The downstream is the exit. The outlet passage 16 is in communication with the urea nozzle 12 to pump a urea solution to the urea nozzle 12. It can be understood that the inlet passage 15 is located upstream of the urea pump 11 and is a low pressure passage; the outlet passage 16 is located downstream of the urea pump 11 and is a high pressure passage.
另外,所述集成装置1设有用以检测温度的温度传感器171。所述温度传感器171可以被设置为与所述入口通道15及/或所述出口通道16连通;或者所述温度传感器171可以被设置为安装在所述集成装置1的任意位置。所述温度传感器171检测到的信号传递给控制器13,控制器13基于该输入信号以及其他信号所设计的控制算法能够提高尿素喷嘴12的喷***度。所述集成装置1还设有用以检测压力的压力传感器172,所述压力传感器172与所述出口通道16连通,以检测尿素泵11出口的高压通道中的压力。由于本发明的集成设计,内部通道的距离比较短,因此可以认为所述压力传感器172的位置比较靠近所述尿素喷嘴12。这种设计的优点在于压力传感器172所测得的压力比较接近尿素喷嘴12中的压力,提高了数据的精确性,进而提高了尿素喷嘴12的喷***度。In addition, the integrated device 1 is provided with a temperature sensor 171 for detecting temperature. The temperature sensor 171 may be disposed to communicate with the inlet passage 15 and/or the outlet passage 16; or the temperature sensor 171 may be disposed to be mounted at any position of the integrated device 1. The signal detected by the temperature sensor 171 is transmitted to the controller 13, and the control algorithm designed by the controller 13 based on the input signal and other signals can improve the injection accuracy of the urea nozzle 12. The integrated device 1 is also provided with a pressure sensor 172 for detecting pressure, the pressure sensor 172 being in communication with the outlet passage 16 to detect the pressure in the high pressure passage of the outlet of the urea pump 11. Due to the integrated design of the present invention, the distance of the internal passage is relatively short, so that the position of the pressure sensor 172 can be considered to be relatively close to the urea nozzle 12. An advantage of this design is that the pressure measured by the pressure sensor 172 is relatively close to the pressure in the urea nozzle 12, improving the accuracy of the data, thereby increasing the injection accuracy of the urea nozzle 12.
请参图2所示,所述集成装置1还设有连接在所述出口通道16与所述入口通道15之间的溢流元件173。所述溢流元件173包括但不限于溢流阀、安全阀或者电控阀等。所述溢流元件173的功能是当高压通道中的压力高于设定值时,将所述溢流元件173打开,将位于高压通道中的尿素溶液释放到低压通道中或者直接返回到所述尿素箱201中,以实现压力调节。Referring to FIG. 2, the integrated device 1 is further provided with an overflow element 173 connected between the outlet passage 16 and the inlet passage 15. The overflow element 173 includes, but is not limited to, a relief valve, a safety valve, or an electrically controlled valve or the like. The function of the overflow element 173 is to open the overflow element 173 when the pressure in the high pressure passage is higher than the set value, to release the urea solution located in the high pressure passage into the low pressure passage or directly return to the In the urea tank 201, pressure regulation is achieved.
为了驱动尿素泵11,所述尿素泵11设有与所述控制器13进行通讯的电机线圈111。为了驱动尿素喷嘴12,所述尿素喷嘴12设有与所述控制器13进行通讯的喷嘴线圈121。In order to drive the urea pump 11, the urea pump 11 is provided with a motor coil 111 that communicates with the controller 13. In order to drive the urea nozzle 12, the urea nozzle 12 is provided with a nozzle coil 121 that communicates with the controller 13.
所述控制器13与所述温度传感器171以及所述压力传感器172进行通讯,以将温度信号以及压力信号传送给所述控制器13。当然,为了能够实现精确控制,所述控制器13还可以接收其他信号,例如来自CAN总线的、与发动机运行参数有关的信号。另外,所述控制器13还可以获得所述尿素泵11的转速,当然,转速信号的采集可以通过相应的转速传感器175(硬件)或者通
过控制算法(软件)来实现。所述控制器13分别对所述尿素泵11以及所述尿素喷嘴12进行独立控制。这种控制的优点在于能够降低尿素泵11的动作对尿素喷嘴12的影响,以实现比较高的控制精度。The controller 13 communicates with the temperature sensor 171 and the pressure sensor 172 to transmit a temperature signal and a pressure signal to the controller 13. Of course, in order to enable precise control, the controller 13 can also receive other signals, such as signals from the CAN bus that are related to engine operating parameters. In addition, the controller 13 can also obtain the rotational speed of the urea pump 11, of course, the speed signal can be collected through the corresponding rotational speed sensor 175 (hardware) or
Implemented by a control algorithm (software). The controller 13 independently controls the urea pump 11 and the urea nozzle 12. The advantage of such control is that the effect of the action of the urea pump 11 on the urea nozzle 12 can be reduced to achieve a relatively high control accuracy.
另外,在某些工况下,由于发动机的排气具有较高的温度,而尿素喷嘴12又是安装在排气管上的,因此需要对所述尿素喷嘴12进行冷却。所述集成装置1为此还设有冷却组件,所述冷却组件通过冷却介质对所述尿素喷嘴12进行冷却。所述冷却介质包括但不限于空气、及/或发动机冷却液、及/或润滑油、及/或尿素等。请参图2所示,本发明图示的实施方式采用水冷,即采用发动机冷却液对尿素喷嘴12进行冷却。壳体14内设有用以供发动机冷却液流通的冷却通道141。In addition, under certain operating conditions, since the exhaust of the engine has a relatively high temperature and the urea nozzle 12 is mounted on the exhaust pipe, the urea nozzle 12 needs to be cooled. The integrated device 1 is also provided with a cooling assembly for this purpose, which cools the urea nozzle 12 by means of a cooling medium. The cooling medium includes, but is not limited to, air, and/or engine coolant, and/or lubricating oil, and/or urea, and the like. Referring to Figure 2, the illustrated embodiment of the present invention uses water cooling, i.e., cooling the urea nozzle 12 with engine coolant. A cooling passage 141 for circulating the engine coolant is provided in the housing 14.
请参图2所示,所述集成装置1的主要工作原理如下:Referring to FIG. 2, the main working principle of the integrated device 1 is as follows:
控制器13驱动尿素泵11运转,位于尿素箱201中尿素溶液通过入口通道15被吸入尿素泵11,经过加压之后,再通过出口通道16输送至尿素喷嘴12。其中,控制器13采集及/或计算需要的信号,例如温度、压力、泵转速等。当达到喷射条件时,控制器13发出控制信号给尿素喷嘴12,例如给喷嘴线圈121通电,通过控制阀针的运动来实现尿素喷射。控制器13发出控制信号给尿素泵11以控制其转速,从而稳定***的压力。在本发明图示的实施方式中,所述控制器13分别对所述尿素泵11以及所述尿素喷嘴12进行独立控制。The controller 13 drives the urea pump 11 to operate. The urea solution in the urea tank 201 is sucked into the urea pump 11 through the inlet passage 15, and after being pressurized, is sent to the urea nozzle 12 through the outlet passage 16. Among them, the controller 13 collects and/or calculates required signals such as temperature, pressure, pump speed, and the like. When the injection condition is reached, the controller 13 sends a control signal to the urea nozzle 12, such as energizing the nozzle coil 121, and by controlling the movement of the valve needle to effect urea injection. The controller 13 sends a control signal to the urea pump 11 to control its rotational speed, thereby stabilizing the pressure of the system. In the illustrated embodiment of the invention, the controller 13 independently controls the urea pump 11 and the urea nozzle 12.
请参图3至图65所示,从结构上看,本发明图示的实施方式中,所述集成装置1包括泵组件18、喷嘴组件19以及控制器13。请参图10所示,所述喷嘴组件19至少部分***到所述泵组件18中,并通过若干固定螺栓64组装到一起。Referring to FIGS. 3 to 65, structurally, in the illustrated embodiment of the present invention, the integrated device 1 includes a pump assembly 18, a nozzle assembly 19, and a controller 13. Referring to Figure 10, the nozzle assembly 19 is at least partially inserted into the pump assembly 18 and assembled together by a plurality of mounting bolts 64.
请参图3至图10所示,在本发明图示的实施方式中,所述泵组件18包括泵组件壳体180以及与所述泵组件壳体180相配合的尿素泵11。所述泵组件壳体180包括位于顶部的罩壳2以及位于所述罩壳2的下方且堆叠在一起的第一壳体3、第二壳体4以及第三壳体5。在本发明图示的实施方式中,所述第一壳体3、第二壳体4以及第三壳体5均由金属材料制成。Referring to Figures 3 through 10, in the illustrated embodiment of the invention, the pump assembly 18 includes a pump assembly housing 180 and a urea pump 11 that mates with the pump assembly housing 180. The pump assembly housing 180 includes a housing 2 at the top and a first housing 3, a second housing 4, and a third housing 5 that are stacked below the housing 2. In the illustrated embodiment of the invention, the first housing 3, the second housing 4, and the third housing 5 are each made of a metal material.
请参图11及图12所示,所述罩壳2包括用以遮盖所述控制器13以及至少部分泵组件18的罩壳腔体21、与所述罩壳腔体21连通的通孔22、位于周边的若干第一安装孔23以及固定在所述通孔22中的防水透气盖24。所述控制器13上安装有芯片以及其他电子元器件,它们在工作时会发热,导致其周围的空气膨胀,本发明通过设置防水透气盖24很好地解决了因空气膨胀而压
坏芯片及/或电子元器件的问题,同时也能起到防水的功效。另外,所述防水透气盖24能够改善控制器13所处的环境,使其能够满足工作条件。在本发明图示的实施方式中,为了提高散热性能,所述罩壳2是由散热效果较好的金属材料制成。另外,所述罩壳2还可以设有位于外部的若干散热片(未图示),以增强散热效果。Referring to FIG. 11 and FIG. 12, the casing 2 includes a casing cavity 21 for covering the controller 13 and at least a portion of the pump assembly 18, and a through hole 22 communicating with the casing cavity 21. A plurality of first mounting holes 23 at the periphery and a waterproof venting cover 24 fixed in the through holes 22. The controller 13 is mounted with a chip and other electronic components, which generate heat during operation, causing the surrounding air to expand. The present invention solves the problem of air expansion by providing a waterproof and permeable cover 24.
The problem of bad chips and/or electronic components can also be waterproof. In addition, the waterproof venting cover 24 can improve the environment in which the controller 13 is placed to enable it to meet operating conditions. In the illustrated embodiment of the present invention, in order to improve heat dissipation performance, the casing 2 is made of a metal material having a better heat dissipation effect. In addition, the cover 2 may also be provided with a plurality of fins (not shown) on the outside to enhance the heat dissipation effect.
请参图11以及图14所示,所述控制器13包括控制板131以及焊接在所述控制板131上的排线插头132。所述排线插头132穿过所述罩壳2以暴露在外面,用以与外部电路相连接。在本发明图示的实施方式中,所述控制板131呈环状,其设有位于中部的中心孔135。所述泵组件18还设有安装在所述第一壳体3上且用以支撑所述控制板131的若干支撑柱631。Referring to FIG. 11 and FIG. 14, the controller 13 includes a control board 131 and a cable plug 132 soldered to the control board 131. The cable plug 132 passes through the casing 2 to be exposed to the outside for connection to an external circuit. In the illustrated embodiment of the invention, the control panel 131 is annular and is provided with a central aperture 135 in the middle. The pump assembly 18 is also provided with a plurality of support posts 631 mounted on the first housing 3 and for supporting the control panel 131.
请参图11以及图14至图19所示,所述泵组件壳体180还设有位于所述罩壳2与所述第一壳体3之间的连接板组件6。具体地,所述连接板组件6设有板片部61以及固定在所述板片部61上且向上凸起的金属罩62。所述金属罩62向上穿过所述控制板131的中心孔135。请参图11所示,所述控制板131被所述支撑柱631以及所述罩壳2共同夹持,并与所述连接板组件6之间形成间隙,以利于所述控制板131进行更好的散热以及更好的避开干涉。Referring to FIG. 11 and FIG. 14 to FIG. 19, the pump assembly housing 180 is further provided with a connecting plate assembly 6 between the casing 2 and the first casing 3. Specifically, the connecting plate assembly 6 is provided with a plate portion 61 and a metal cover 62 fixed to the plate portion 61 and convex upward. The metal cover 62 passes upward through the center hole 135 of the control board 131. Referring to FIG. 11 , the control board 131 is sandwiched by the support post 631 and the cover 2 and forms a gap with the connecting plate assembly 6 to facilitate the control panel 131 to perform more. Good heat dissipation and better avoid interference.
请参图16所示,所述板片部61设有贯穿其上、下表面的贯穿孔614、第一穿线孔618以及贯通孔615。请参图14所示,压力传感器172至少部分穿过贯穿孔614,温度传感器171至少部分穿过贯通孔615。压力传感器172的导电线1721穿过贯穿孔614、喷嘴组件19的导电线124穿过第一穿线孔618、温度传感器171的导电线1711穿过贯通孔615,并均电性连接到所述控制板131上。此外,请参图15所示,所述板片部61设有供螺钉133穿过的若干安装孔611。请参图17所示,板片部61设有对应所述金属罩62的穿孔617。在本发明图示的实施方式中,所述金属罩62的下端焊接在所述穿孔617的内壁上。Referring to FIG. 16, the plate portion 61 is provided with a through hole 614, a first threading hole 618, and a through hole 615 extending through the upper and lower surfaces thereof. Referring to FIG. 14, the pressure sensor 172 at least partially passes through the through hole 614, and the temperature sensor 171 at least partially passes through the through hole 615. The conductive line 1721 of the pressure sensor 172 passes through the through hole 614, the conductive line 124 of the nozzle assembly 19 passes through the first threading hole 618, the conductive line 1711 of the temperature sensor 171 passes through the through hole 615, and is electrically connected to the control. On the board 131. In addition, referring to FIG. 15, the plate portion 61 is provided with a plurality of mounting holes 611 through which the screws 133 pass. Referring to FIG. 17, the plate portion 61 is provided with a through hole 617 corresponding to the metal cover 62. In the illustrated embodiment of the invention, the lower end of the metal cover 62 is welded to the inner wall of the perforation 617.
在本发明图示的实施方式中,所述尿素泵11为齿轮泵,其包括电机线圈111、所述金属罩62、位于所述金属罩62内的弹性体71与磁性体72、位于所述金属罩62下方的第一密封圈73、以及相互啮合的第一齿轮组件74与第二齿轮组件75。由于齿轮泵能够建立比较大的工作压力,因此有利于提高尿素喷嘴12的流量。另外,齿轮泵还能够反转,利于抽空残留的尿素溶液,降低尿素结晶的风险。请参图12及图13所示,所述电机线圈111设有支架112以及缠绕在所述支架112上的线圈113。所述支架112设有***述金属罩62的孔114。在本发明图示的实施方式中,所述电机线圈111被过盈配合在所述罩壳腔体21内,如此设置,可以在不使用额外固定元
件(例如螺钉等)的情况下,将电机线圈111与罩壳腔体21形成一个整体,从而减小了零件的数量。另外,请参图20及图21所示,所述尿素泵11还包括***述磁性体72的外套筒723,所述外套筒723直接容纳在所述金属罩62内。In the illustrated embodiment of the present invention, the urea pump 11 is a gear pump including a motor coil 111, the metal cover 62, an elastic body 71 located in the metal cover 62, and a magnetic body 72. A first seal ring 73 below the metal cover 62, and a first gear assembly 74 and a second gear assembly 75 that are in mesh with each other. Since the gear pump can establish a relatively large working pressure, it is advantageous to increase the flow rate of the urea nozzle 12. In addition, the gear pump can also reverse, which helps to evacuate the residual urea solution and reduce the risk of urea crystallization. Referring to FIGS. 12 and 13, the motor coil 111 is provided with a bracket 112 and a coil 113 wound around the bracket 112. The bracket 112 is provided with a hole 114 for receiving the metal cover 62. In the illustrated embodiment of the present invention, the motor coil 111 is interference fit in the casing cavity 21, so that no additional fixed elements can be used.
In the case of a member such as a screw or the like, the motor coil 111 is formed integrally with the casing cavity 21, thereby reducing the number of parts. 20 and 21, the urea pump 11 further includes an outer sleeve 723 that houses the magnetic body 72. The outer sleeve 723 is directly received in the metal cover 62.
请参图59所示,所述电机线圈111套接在所述金属罩62的***。所述板片部61向下压住所述第一密封圈73以实现密封。在本发明图示的实施方式中,弹性体71位于磁性体72的下端,弹性体71与磁性体72共同被一个金属骨架720所支撑,例如磁性体72与弹性体71分别套接在金属骨架720的上、下两端。金属骨架720设有位于弹性体71与磁性体72之间的分隔板721。除分隔板721之外,金属骨架720整体上呈中空的筒状,所述第一齿轮组件74至少部分收容在所述金属骨架720中(参图59所示)。为了更好地限位所述弹性体71,所述金属骨架720的末端设有与所述弹性体71相抵压的勾部724。所述勾部724设有易于将所述弹性体71套接到所述金属骨架720上的导引锥面725。所述弹性体71设有径向延伸的装配孔711,所述金属骨架720设有对应于所述装配孔711的固定孔726,第一齿轮组件74的上端通过安装在装配孔711以及固定孔726中的螺钉722与所述金属骨架720实现径向固定。如此设置,可以防止第一齿轮组件74的轴向窜动,提高齿轮泵运行的平稳性。众所周知,尿素溶液在结冰之后,体积会发生膨胀。本发明通过设置弹性体71,弹性体71能够被压缩以吸收该膨胀的体积,从而避免因体积膨胀而破坏其他元件。Referring to FIG. 59, the motor coil 111 is sleeved on the periphery of the metal cover 62. The sheet portion 61 presses down the first seal ring 73 to effect sealing. In the illustrated embodiment of the present invention, the elastic body 71 is located at the lower end of the magnetic body 72, and the elastic body 71 and the magnetic body 72 are supported by a metal skeleton 720, for example, the magnetic body 72 and the elastic body 71 are respectively sleeved on the metal skeleton. The upper and lower ends of the 720. The metal skeleton 720 is provided with a partitioning plate 721 between the elastic body 71 and the magnetic body 72. In addition to the partitioning plate 721, the metal skeleton 720 has a hollow cylindrical shape as a whole, and the first gear assembly 74 is at least partially housed in the metal skeleton 720 (refer to FIG. 59). In order to better limit the elastic body 71, the end of the metal skeleton 720 is provided with a hook portion 724 that is pressed against the elastic body 71. The hook portion 724 is provided with a guiding cone surface 725 that is easy to sleeve the elastic body 71 onto the metal frame 720. The elastic body 71 is provided with a radially extending fitting hole 711. The metal frame 720 is provided with a fixing hole 726 corresponding to the mounting hole 711. The upper end of the first gear assembly 74 is mounted on the mounting hole 711 and the fixing hole. The screw 722 in 726 is radially fixed to the metal skeleton 720. With this arrangement, the axial movement of the first gear assembly 74 can be prevented, and the smoothness of the operation of the gear pump can be improved. It is well known that the volume of urea solution expands after icing. By providing the elastomer 71, the elastomer 71 can be compressed to absorb the expanded volume, thereby avoiding damage to other components due to volume expansion.
请参图22至图25所示,在本发明图示的实施方式中,所述压力传感器172包括基板176、固定于所述基板176上的电路板177、与所述电路板177连接的导电线1721以及扣持于所述电路板177上的保护盖178。其中,所述基板176设有板体部1761以及自所述板体部1761向下延伸的凸起部1762,所述凸起部1762上安装有密封圈1722。所述凸起部1762设有向下贯穿的通孔1763,且所述通孔1763向上贯穿所述板体部1761以及电路板177。所述电路板177在对应所述通孔1763的位置处设有芯片1771。所述保护盖178安装在所述芯片1771的***,以保护所述芯片1771。在本发明图示的实施方式中,所述保护盖178呈长方体状,并且所述保护盖178设有与所述芯片1771连通的孔1781。请参图25及图59所示,不同于现有技术中的压力传感器,本发明中的压力传感器172不具备单独的封装壳体,而是巧妙地借用罩壳2作为其封装壳体。如此设置,可以减小体积、便于安装、降低成本等。在发明图示的实施方式中,所述压力传感器172是差压传感器,其通过芯片1771上下两端的差压变化转变成电信号。鉴于差压传感器的工作原理
是本领域技术人员所熟知的技术,在此不再赘述。Referring to FIG. 22 to FIG. 25, in the illustrated embodiment of the present invention, the pressure sensor 172 includes a substrate 176, a circuit board 177 fixed on the substrate 176, and a conductive connection connected to the circuit board 177. A wire 1721 and a protective cover 178 that is fastened to the circuit board 177. The substrate 176 is provided with a plate body portion 1761 and a protrusion portion 1762 extending downward from the plate body portion 1761. A sealing ring 1722 is mounted on the protrusion portion 1762. The protruding portion 1762 is provided with a through hole 1763 penetrating downward, and the through hole 1763 penetrates the plate body portion 1761 and the circuit board 177 upward. The circuit board 177 is provided with a chip 1771 at a position corresponding to the through hole 1763. The protective cover 178 is mounted on the periphery of the chip 1771 to protect the chip 1771. In the illustrated embodiment of the present invention, the protective cover 178 has a rectangular parallelepiped shape, and the protective cover 178 is provided with a hole 1781 communicating with the chip 1771. Referring to FIG. 25 and FIG. 59, unlike the pressure sensor of the prior art, the pressure sensor 172 of the present invention does not have a separate package housing, but subtly borrows the cover 2 as its package housing. With this arrangement, the volume can be reduced, the installation can be facilitated, the cost can be reduced, and the like. In the illustrated embodiment of the invention, the pressure sensor 172 is a differential pressure sensor that is converted into an electrical signal by a differential pressure change across the upper and lower ends of the chip 1771. In view of the working principle of the differential pressure sensor
It is a technique well known to those skilled in the art and will not be described herein.
请参图26至图48所示,在本发明图示的实施方式中,所述第一壳体3、第二壳体4以及第三壳体5是机加工件,并通过螺栓66自上而下固定在一起。所述第一壳体3包括第一上表面31、第一下表面32以及第一侧面33,其中所述第一上表面31设有第一环形槽311以及被所述第一环形槽311包围的第一岛部312。所述第一环形槽311用以***述第一密封圈73。所述第一下表面32设有第二环形槽325以及被所述第二环形槽325包围的第二岛部326。所述第二环形槽325用以收容第二密封圈731(如图64所示)。Referring to FIG. 26 to FIG. 48, in the illustrated embodiment of the present invention, the first housing 3, the second housing 4, and the third housing 5 are machined parts, and are bolted by the upper part. And the bottom is fixed together. The first housing 3 includes a first upper surface 31, a first lower surface 32, and a first side surface 33, wherein the first upper surface 31 is provided with a first annular groove 311 and surrounded by the first annular groove 311 The first island portion 312. The first annular groove 311 is configured to receive the first sealing ring 73. The first lower surface 32 is provided with a second annular groove 325 and a second island portion 326 surrounded by the second annular groove 325. The second annular groove 325 is for receiving the second sealing ring 731 (as shown in FIG. 64).
所述第一岛部312设有贯穿所述第一上表面31与所述第一下表面32的第一定位孔3121、贯穿所述第一下表面32的第二定位孔3122、贯穿所述第一上表面31且与所述入口通道15连通的第一连接孔3123、以及贯穿所述第一上表面31且与所述第二定位孔3122连通的第一导流槽3124。请参图27、图28以及图59所示,所述尿素泵11设有收容在所述第一定位孔3121内的第一轴套76以及收容在所述第二定位孔3122内的第二轴套77。另外,所述第一壳体3还包括对应于所述螺钉133的内螺纹孔317。组装时,所述螺钉133在穿过板片部61的安装孔611之后被拧紧在所述内螺纹孔317中,以对所述连接板组件6进行固定。所述第一壳体3还包括供螺栓66穿过的若干第一组装孔318,所述第一组装孔318贯穿所述第一上表面31与所述第一下表面32。所述第一上表面31还设有位于所述第一岛部312旁侧且用以收容压力传感器172的压力传感器收容孔313以及用以收容温度传感器171的温度传感器收容孔314。请参图59所示,所述压力传感器172上的密封圈1722与所述压力传感器收容孔313的内壁实现密封。所述压力传感器172被所述板片部61压住,以实现固定。另外,所述第一壳体3还设有向外凸出的安装凸缘315,所述安装凸缘315设有对应于所述第一安装孔23的第二安装孔316。组装时,将螺栓63依次穿过第二安装孔316与支撑柱631,并紧固在第一安装孔23的内螺纹中。如此设置,能够将第一壳体3与罩壳2实现固定,并夹紧控制板131(参图59所示)。The first island portion 312 is provided with a first positioning hole 3121 extending through the first upper surface 31 and the first lower surface 32, and a second positioning hole 3122 extending through the first lower surface 32. a first upper surface 31 and a first connection hole 3123 communicating with the inlet passage 15 and a first guide groove 3124 penetrating the first upper surface 31 and communicating with the second positioning hole 3122. Referring to FIG. 27, FIG. 28 and FIG. 59, the urea pump 11 is provided with a first sleeve 76 housed in the first positioning hole 3121 and a second received in the second positioning hole 3122. Bushing 77. In addition, the first housing 3 further includes an internally threaded hole 317 corresponding to the screw 133. When assembled, the screw 133 is screwed into the internally threaded hole 317 after passing through the mounting hole 611 of the plate portion 61 to fix the connecting plate assembly 6. The first housing 3 further includes a plurality of first assembly holes 318 through which the bolts 66 pass, the first assembly holes 318 extending through the first upper surface 31 and the first lower surface 32. The first upper surface 31 further includes a pressure sensor receiving hole 313 located at a side of the first island portion 312 for receiving the pressure sensor 172 and a temperature sensor receiving hole 314 for receiving the temperature sensor 171. Referring to FIG. 59, the seal ring 1722 on the pressure sensor 172 and the inner wall of the pressure sensor receiving hole 313 are sealed. The pressure sensor 172 is pressed by the sheet portion 61 to achieve fixation. In addition, the first housing 3 is further provided with an outwardly protruding mounting flange 315, and the mounting flange 315 is provided with a second mounting hole 316 corresponding to the first mounting hole 23. When assembled, the bolts 63 are sequentially passed through the second mounting holes 316 and the support posts 631 and fastened in the internal threads of the first mounting holes 23. With this arrangement, the first casing 3 and the casing 2 can be fixed and the control panel 131 can be clamped (as shown in Fig. 59).
另外,请参图30所示,所述第一壳体3设有贯穿所述第一侧面33以与尿素接头331连接的进液通道332。所述第一壳体3设有贯穿所述第一下表面32且与所述进液通道332连通的第二连接孔3127。第一连接孔3123与第二连接孔3127均垂直于进液通道332。所述第一定位孔3121、第二定位孔3122、第二连接孔3127均向下贯穿第二岛部326。所述第二岛部326还设有贯穿所述第一下表面32的出口孔3126。所述第一下表面32设有连通所述第一定位孔3121与所述第二
定位孔3122的第一泄荷槽321,以确保压力平衡。所述第一泄荷槽321位于第二岛部326上。另外,所述第一壳体3还设有向下贯穿所述第一下表面32的收容腔322,用以收容至少部分的所述喷嘴组件19。请参图33、图34以及图36所示,所述收容腔322与所述压力传感器收容孔313连通。同时,所述收容腔322也与出口孔3126连通。请参图32以及图33所示,在本发明图示的实施方式中,出口孔3126在所述第一壳体3的内部是倾斜的,大致呈倒V形。所述第一壳体3设有对应所述第一穿线孔618的第二穿线孔323。In addition, as shown in FIG. 30, the first casing 3 is provided with a liquid inlet passage 332 extending through the first side surface 33 to be connected to the urea joint 331. The first housing 3 is provided with a second connection hole 3127 that penetrates the first lower surface 32 and communicates with the liquid inlet passage 332. The first connection hole 3123 and the second connection hole 3127 are both perpendicular to the liquid inlet channel 332. The first positioning hole 3121, the second positioning hole 3122, and the second connection hole 3127 each penetrate the second island portion 326 downward. The second island portion 326 is also provided with an exit aperture 3126 extending through the first lower surface 32. The first lower surface 32 is provided to communicate with the first positioning hole 3121 and the second
The first relief groove 321 of the hole 3122 is positioned to ensure pressure balance. The first relief groove 321 is located on the second island portion 326. In addition, the first housing 3 is further provided with a receiving cavity 322 extending downwardly through the first lower surface 32 for receiving at least a portion of the nozzle assembly 19. Referring to FIGS. 33, 34, and 36, the receiving chamber 322 is in communication with the pressure sensor receiving hole 313. At the same time, the receiving cavity 322 is also in communication with the outlet hole 3126. Referring to Figures 32 and 33, in the illustrated embodiment of the invention, the exit aperture 3126 is sloped inside the first housing 3 and is generally inverted V-shaped. The first housing 3 is provided with a second threading hole 323 corresponding to the first threading hole 618.
另外,请参图38、图64以及图65所示,所述第一壳体3还设有与进液通道332以及收容腔322连通的溢流元件收容槽319。所述溢流元件收容槽319向外贯穿第一侧面33,以***述溢流元件173。所述溢流元件173在本发明图示的实施方式中为安全阀,其目的是通过泄压的方式以确保所述集成装置1中高压通道中的压力处于安全值范围内。为了固定所述溢流元件173,所述第一壳体3设有固定所述溢流元件173的塞子5122。请参图65所示,所述溢流元件173设有始终连通所述入口通道15与所述出口通道16的涓流孔1731。如此设置,一方面能够降低***的压力波动,尤其是在喷嘴组件19正在喷射尿素时;另一方面也能够使尿素溶液保持流动,从而利于电机线圈111等的散热。In addition, referring to FIG. 38, FIG. 64 and FIG. 65, the first casing 3 is further provided with an overflow element receiving groove 319 which communicates with the liquid inlet passage 332 and the receiving cavity 322. The overflow element receiving groove 319 extends outward through the first side surface 33 to receive the overflow element 173. The overflow element 173 is a safety valve in the illustrated embodiment of the invention, the purpose of which is to ensure that the pressure in the high pressure passage in the integrated device 1 is within a safe range by means of pressure relief. In order to fix the overflow element 173, the first housing 3 is provided with a plug 5122 that fixes the overflow element 173. Referring to FIG. 65, the overflow element 173 is provided with a choke hole 1731 that constantly communicates the inlet passage 15 and the outlet passage 16. In this way, on the one hand, the pressure fluctuations of the system can be reduced, in particular when the nozzle assembly 19 is spraying urea; on the other hand, the urea solution can be kept flowing, thereby facilitating heat dissipation of the motor coil 111 and the like.
请参图1所示,所述尿素接头331通过尿素连接管333与所述尿素箱201连通。为了更好的实现加热解冻功能,所述尾气后处理***100还可以设有对所述尿素连接管333进行加热的加热装置334。请参图22及图29所示,在本发明图示的实施方式中,所述进液通道332水平延伸入所述第一壳体3的内部。当然,在其他实施方式中,所述进液通道332也可以呈一定的角度。Referring to FIG. 1, the urea joint 331 is in communication with the urea tank 201 through a urea connection pipe 333. In order to better achieve the heating and defrosting function, the exhaust gas aftertreatment system 100 may further be provided with a heating device 334 that heats the urea connection pipe 333. Referring to FIGS. 22 and 29, in the illustrated embodiment of the present invention, the liquid inlet passage 332 extends horizontally into the interior of the first casing 3. Of course, in other embodiments, the liquid inlet channel 332 can also be at an angle.
请参图39至图41所示,所述第一齿轮组件74包括第一齿轮轴741以及固定在第一齿轮轴741上的第一齿轮742;所述第二齿轮组件75包括第二齿轮轴751以及固定在第二齿轮轴751上的第二齿轮752,所述第一齿轮742与所述第二齿轮752相互啮合。请参图34所示,在本发明图示的实施方式中,所述第一齿轮742与所述第二齿轮752外啮合。另外,所述第一齿轮轴741为主动轴,所述第二齿轮轴751为从动轴,所述第一齿轮轴741高于所述第二齿轮轴751。所述第一齿轮轴741的上端穿过所述第一轴套76,并至少部分固定在金属骨架720中。所述第二齿轮轴751的上端定位在所述第二轴套77中。当给电机线圈111通电时,其与磁性体72产生相互作用,电磁力会驱动第一齿轮轴741旋转,并由此带动第一齿轮742以及第二齿轮752旋转。Referring to FIGS. 39 to 41, the first gear assembly 74 includes a first gear shaft 741 and a first gear 742 fixed to the first gear shaft 741; the second gear assembly 75 includes a second gear shaft. 751 and a second gear 752 fixed to the second gear shaft 751, the first gear 742 and the second gear 752 mesh with each other. Referring to FIG. 34, in the illustrated embodiment of the present invention, the first gear 742 is externally meshed with the second gear 752. In addition, the first gear shaft 741 is a drive shaft, the second gear shaft 751 is a driven shaft, and the first gear shaft 741 is higher than the second gear shaft 751. The upper end of the first gear shaft 741 passes through the first sleeve 76 and is at least partially fixed in the metal frame 720. The upper end of the second gear shaft 751 is positioned in the second boss 77. When the motor coil 111 is energized, it interacts with the magnetic body 72, and the electromagnetic force drives the first gear shaft 741 to rotate, thereby driving the first gear 742 and the second gear 752 to rotate.
所述第二壳体4位于所述第一壳体3的下方且与第一壳体3相连接。另外,为了更好的定位,
所述第一壳体3与所述第二壳体4之间还设有若干定位销328。所述第二壳体4包括第二上表面41、第二下表面42以及贯穿所述第二上表面41与第二下表面42且用以***述第一齿轮742以及第二齿轮752的齿轮槽43。所述齿轮槽43的一侧设有与入口通道15连通的进液腔431,所述齿轮槽43的另一侧设有与所述出口通道16连通的出液腔432。具体地,进液腔431与第二连接孔3127连通,出液腔432的上端与出口孔3126连通。另外,第二壳体4的第二上表面41设有供所述喷嘴组件19穿过的第一容纳孔411,第二下表面42设有定位所述喷嘴组件19的第二容纳孔421,所述第二容纳孔421大于所述第一容纳孔411,以形成阶梯孔。所述喷嘴组件19向上凸出所述第二上表面41并收容在所述收容腔322中。如此设置,高压的尿素溶液能够被输送到尿素喷嘴12。另外,所述第二上表面41还设有对应于第二穿线孔323的第三穿线孔412。第一穿线孔618、第二穿线孔323以及第三穿线孔412相互对齐,用以供喷嘴组件19的导电线124穿过。所述第二壳体4还包括与所述第一组装孔318对齐的若干第二组装孔418。The second housing 4 is located below the first housing 3 and is connected to the first housing 3 . In addition, for better positioning,
A plurality of positioning pins 328 are further disposed between the first housing 3 and the second housing 4. The second housing 4 includes a second upper surface 41 , a second lower surface 42 , and a second upper surface 41 and a second lower surface 42 for receiving the first gear 742 and the second gear 752 . Gear groove 43. One side of the gear groove 43 is provided with an inlet chamber 431 communicating with the inlet passage 15, and the other side of the gear groove 43 is provided with an outlet chamber 432 communicating with the outlet passage 16. Specifically, the inlet chamber 431 is in communication with the second connection hole 3127, and the upper end of the outlet chamber 432 is in communication with the outlet port 3126. In addition, the second upper surface 41 of the second housing 4 is provided with a first receiving hole 411 through which the nozzle assembly 19 passes, and the second lower surface 42 is provided with a second receiving hole 421 for positioning the nozzle assembly 19. The second receiving hole 421 is larger than the first receiving hole 411 to form a stepped hole. The nozzle assembly 19 protrudes upward from the second upper surface 41 and is received in the receiving cavity 322. With this arrangement, a high pressure urea solution can be delivered to the urea nozzle 12. In addition, the second upper surface 41 is further provided with a third threading hole 412 corresponding to the second threading hole 323. The first threading hole 618, the second threading hole 323, and the third threading hole 412 are aligned with each other for the conductive wire 124 of the nozzle assembly 19 to pass through. The second housing 4 further includes a plurality of second assembly holes 418 aligned with the first assembly apertures 318.
请参图26、图45至图48所示,所述第三壳体5位于所述第二壳体4的下方且与第二壳体4相连接。所述第三壳体5包括本体部51、自本体部51向下延伸的凸起部52以及自所述本体部51向外延伸的法兰53,其中所述法兰53设有与所述第二组装孔418对齐的若干第三组装孔531,用以供螺栓66穿过。所述本体部51设有第三上表面511,所述第三上表面511设有第三环形槽512以及被所述第三环形槽512包围的第三岛部513。所述第三环形槽512用以收容第三密封圈732(如图64所示)。第三岛部513设有贯穿第三上表面511的第三定位孔5111以及贯穿第三上表面511的第四定位孔5112。所述第三壳体5设有收容于所述第三定位孔5111中的第三轴套78以及收容于所述第四定位孔5112内的第四轴套79。所述第一齿轮轴741的下端定位在第三轴套78中,所述第二齿轮轴751的下端定位在所述第四轴套79中。Referring to FIG. 26 and FIG. 45 to FIG. 48 , the third casing 5 is located below the second casing 4 and is connected to the second casing 4 . The third housing 5 includes a body portion 51, a boss portion 52 extending downward from the body portion 51, and a flange 53 extending outward from the body portion 51, wherein the flange 53 is provided with the A plurality of third assembly holes 531 are aligned with the second assembly holes 418 for the bolts 66 to pass through. The body portion 51 is provided with a third upper surface 511, and the third upper surface 511 is provided with a third annular groove 512 and a third island portion 513 surrounded by the third annular groove 512. The third annular groove 512 is for receiving the third sealing ring 732 (as shown in FIG. 64). The third island portion 513 is provided with a third positioning hole 5111 penetrating the third upper surface 511 and a fourth positioning hole 5112 penetrating the third upper surface 511. The third housing 5 is provided with a third sleeve 78 received in the third positioning hole 5111 and a fourth sleeve 79 received in the fourth positioning hole 5112 . The lower end of the first gear shaft 741 is positioned in the third bushing 78, and the lower end of the second gear shaft 751 is positioned in the fourth bushing 79.
另外,所述第三岛部513还设有位于所述第三上表面511的第二导流槽5114以及第三导流槽5115,其中所述第二导流槽5114与第三定位孔5111连通,第三导流槽5115与第四定位孔5112连通。请参图43所示,所述第二导流槽5114与第三导流槽5115在第三壳体5的内部是倾斜设置的。请参图48所示,出液腔432的下端与第二导流槽5114以及第三导流槽5115均连通。In addition, the third island portion 513 is further provided with a second guiding groove 5114 and a third guiding groove 5115 on the third upper surface 511, wherein the second guiding groove 5114 and the third positioning hole 5111 In communication, the third guiding groove 5115 is in communication with the fourth positioning hole 5112. Referring to FIG. 43, the second guiding groove 5114 and the third guiding groove 5115 are obliquely disposed inside the third housing 5. Referring to FIG. 48, the lower end of the liquid discharge chamber 432 is in communication with both the second flow guiding groove 5114 and the third flow guiding groove 5115.
工作时,尿素溶液自所述尿素连接管333进入进液通道332,一部分尿素溶液自第一连接孔3123进入金属罩62中,另一部分尿素溶液自第二连接孔3127进入进液腔431;其中位于金属罩62中的尿素溶液一方面会直接渗入第一定位孔3121中以润滑第一轴套76,另一方面会沿着第一
导流槽3124渗入第二定位孔3122中以润滑第二轴套77。进入进液腔431的尿素溶液又分为两路,其中一路在经过齿轮泵的加压之后进入出口通道16,另一路自第二、第三导流槽5114、5115分别进入第三、第四定位孔5111、5112中以润滑第三、第四轴套78、79,提高齿轮泵转动的平稳性,减小磨损。进入出口通道16中的高压的尿素溶液沿着出口孔3126进入到收容腔322中以流向喷嘴组件19,同时一部分尿素溶液流向溢流元件173。当压力小于溢流元件173的设定值时,溢流元件173关闭,只通过涓流孔1731进行连通;而当压力大于溢流元件173的设定值时,溢流元件173打开,部分尿素溶液进入进液通道332中,以实现泄压。In operation, the urea solution enters the inlet channel 332 from the urea connection tube 333, a portion of the urea solution enters the metal cover 62 from the first connection hole 3123, and another portion of the urea solution enters the inlet chamber 431 from the second connection hole 3127; The urea solution located in the metal cover 62 directly penetrates into the first positioning hole 3121 on the one hand to lubricate the first sleeve 76, and on the other hand, along the first
The guide groove 3124 penetrates into the second positioning hole 3122 to lubricate the second sleeve 77. The urea solution entering the liquid inlet chamber 431 is further divided into two paths, one of which enters the outlet passage 16 after being pressurized by the gear pump, and the other of which enters the third and fourth portions from the second and third flow guiding grooves 5114 and 5115, respectively. The positioning holes 5111, 5112 are used to lubricate the third and fourth sleeves 78, 79 to improve the smoothness of the rotation of the gear pump and reduce wear. The high pressure urea solution entering the outlet passage 16 enters the containment chamber 322 along the outlet port 3126 to flow to the nozzle assembly 19 while a portion of the urea solution flows to the overflow member 173. When the pressure is less than the set value of the overflow element 173, the overflow element 173 is closed, communicating only through the choke hole 1731; and when the pressure is greater than the set value of the overflow element 173, the overflow element 173 is opened, part of the urea The solution enters the inlet passage 332 to achieve pressure relief.
可以理解,在本发明图示的实施方式中,入口通道15包括进液通道332、第二连接孔3127以及进液腔431。因为所述入口通道15位于尿素泵11的上游,所以被称之为低压通道。所述出口通道16包括出液腔432、出口孔3126、收容腔322等。因为所述出口通道16位于尿素泵11的下游,所以被称之为高压通道。It will be understood that in the illustrated embodiment of the invention, the inlet passage 15 includes a feed passage 332, a second connection port 3127, and an inlet chamber 431. Since the inlet passage 15 is located upstream of the urea pump 11, it is called a low pressure passage. The outlet passage 16 includes a liquid outlet chamber 432, an outlet hole 3126, a receiving chamber 322, and the like. Since the outlet passage 16 is located downstream of the urea pump 11, it is referred to as a high pressure passage.
请参图49至图58所示,所述喷嘴组件19包括喷嘴组件壳体190以及与所述喷嘴组件壳体190相配合的尿素喷嘴12。Referring to FIGS. 49-58, the nozzle assembly 19 includes a nozzle assembly housing 190 and a urea nozzle 12 that mates with the nozzle assembly housing 190.
所述喷嘴组件壳体190包括主体部91、自主体部91向下延伸的延伸部92以及自所述主体部91向外延伸的安装法兰93。所述安装法兰93设有将所述集成装置1安装到排气管106或者封装***300上的若干安装孔931。所述主体部91设有第四上表面911以及第四侧面912。所述第四上表面911设有***述尿素喷嘴12的容纳腔94以及收容凸起部52的凹槽95。请参图55所示,所述容纳腔94向下延伸入所述延伸部92内。所述主体部91还设有向上凸伸入容纳腔94中的筒状部917,以支撑所述尿素喷嘴12。The nozzle assembly housing 190 includes a main body portion 91, an extending portion 92 extending downward from the main body portion 91, and a mounting flange 93 extending outward from the main body portion 91. The mounting flange 93 is provided with a plurality of mounting holes 931 for mounting the integrated device 1 to the exhaust pipe 106 or the packaging system 300. The main body portion 91 is provided with a fourth upper surface 911 and a fourth side surface 912. The fourth upper surface 911 is provided with a receiving cavity 94 for receiving the urea nozzle 12 and a recess 95 for receiving the convex portion 52. Referring to FIG. 55, the receiving cavity 94 extends downward into the extension 92. The main body portion 91 is further provided with a cylindrical portion 917 that protrudes upward into the accommodating chamber 94 to support the urea nozzle 12.
所述喷嘴组件壳体190还设有用以冷却所述尿素喷嘴12的所述冷却组件。在本发明图示的实施方式中,所述冷却组件为水冷组件。位于喷嘴组件壳体190内的冷却通道141包括贯穿所述第四侧面912的第一冷却通道913以及与所述第一冷却通道913间隔设置的第二冷却通道914。其中,所述第一冷却通道913与所述入口接头103连通,所述第二冷却通道914与所述出口接头104连通。所述喷嘴组件壳体190设有密封在延伸部92***的端盖96。在本发明图示的实施方式中,所述端盖96焊接在延伸部92上。如此设置,所述喷嘴组件壳体190在端盖96与延伸部92之间形成了连通第一冷却通道914与第二冷却通道915的环形冷却槽916。The nozzle assembly housing 190 is also provided with the cooling assembly to cool the urea nozzle 12. In the illustrated embodiment of the invention, the cooling assembly is a water cooled assembly. A cooling passage 141 located within the nozzle assembly housing 190 includes a first cooling passage 913 extending through the fourth side 912 and a second cooling passage 914 spaced from the first cooling passage 913. The first cooling passage 913 is in communication with the inlet joint 103, and the second cooling passage 914 is in communication with the outlet joint 104. The nozzle assembly housing 190 is provided with an end cap 96 that seals around the periphery of the extension 92. In the illustrated embodiment of the invention, the end cap 96 is welded to the extension 92. As such, the nozzle assembly housing 190 forms an annular cooling groove 916 that communicates between the first cooling passage 914 and the second cooling passage 915 between the end cap 96 and the extension portion 92.
在本发明图示的实施方式中,所述安装法兰93与主体部91一体机加工形成。当然,在其他
实施方式中,所述安装法兰93也可以与所述主体部91分开制作,然后焊接在一起。In the illustrated embodiment of the invention, the mounting flange 93 is integrally machined with the body portion 91. Of course, in other
In an embodiment, the mounting flange 93 may also be fabricated separately from the body portion 91 and then welded together.
请参图50所示,在本发明图示的实施方式中,所述尿素喷嘴12包括喷嘴线圈121、与所述喷嘴线圈121相互作用的磁性部81、位于所述磁性部81下方的阀针部82、作用在所述磁性部81与所述阀针部82之间的弹簧83以及与所述阀针部82配合的阀座84(参图5所示)。所述喷嘴线圈121缠绕在所述磁性部81的***。所述尿素喷嘴12还包括套接在所述喷嘴线圈121***的套筒部122。所述弹簧83安装在所述磁性部81与所述阀针部82内。所述阀针部82设有锥形部821以及自所述锥形部821向下延伸的阀针822。请参图52所示,所述阀座84包括焊接在所述延伸部92上的旋流片85。所述旋流片85设有与所述阀针822相配合的喷射孔851以及与所述喷射孔851连通的若干旋流槽852。请参图10、图50及图59所示,所述磁性部81的上端套接有第四密封圈812以与所述收容腔322的内壁实现密封,所述磁性部81的下端套接有第五密封圈813以与所述容纳腔94的内壁实现密封。请参图59所示,所述筒状部917支撑所述阀针部82,使所述阀针部82与所述喷嘴线圈121能够在阀针822的移动方向上形成较多的重叠,加大喷嘴线圈121所产生的电磁力对阀针部82的影响,从而减小驱动电流,降低尿素喷嘴12的功耗,减少发热量。另外,所述容纳腔94中还设有与尿素喷嘴12相配合以调整磁性部81与阀针部82之间的间隙的垫片86。可以理解,阀针部82的行程与上述间隙有密切关系,通过采用不同厚度的垫片86对上述间隙进行调整,能够精确控制阀针部82的行程,以提高尿素喷嘴12的精度。Referring to FIG. 50, in the illustrated embodiment of the present invention, the urea nozzle 12 includes a nozzle coil 121, a magnetic portion 81 that interacts with the nozzle coil 121, and a valve needle located below the magnetic portion 81. The portion 82, a spring 83 acting between the magnetic portion 81 and the valve needle portion 82, and a valve seat 84 (shown in Fig. 5) that is engaged with the valve needle portion 82. The nozzle coil 121 is wound around the periphery of the magnetic portion 81. The urea nozzle 12 further includes a sleeve portion 122 that is sleeved around the periphery of the nozzle coil 121. The spring 83 is mounted in the magnetic portion 81 and the valve needle portion 82. The valve needle portion 82 is provided with a tapered portion 821 and a valve needle 822 extending downward from the tapered portion 821. Referring to FIG. 52, the valve seat 84 includes a swirling vane 85 welded to the extension portion 92. The swirling plate 85 is provided with an injection hole 851 that cooperates with the valve needle 822 and a plurality of swirl grooves 852 that communicate with the injection hole 851. Referring to FIG. 10, FIG. 50 and FIG. 59, the upper end of the magnetic portion 81 is sleeved with a fourth sealing ring 812 to seal against the inner wall of the receiving cavity 322, and the lower end of the magnetic portion 81 is sleeved. The fifth seal ring 813 is sealed to the inner wall of the accommodating chamber 94. Referring to FIG. 59, the cylindrical portion 917 supports the valve needle portion 82, so that the valve needle portion 82 and the nozzle coil 121 can form a large overlap in the moving direction of the valve needle 822. The electromagnetic force generated by the large nozzle coil 121 affects the valve needle portion 82, thereby reducing the drive current, reducing the power consumption of the urea nozzle 12, and reducing the amount of heat generation. In addition, the accommodating chamber 94 is further provided with a spacer 86 that cooperates with the urea nozzle 12 to adjust a gap between the magnetic portion 81 and the valve needle portion 82. It can be understood that the stroke of the needle portion 82 is closely related to the above-described gap. By adjusting the gap by using the spacers 86 of different thicknesses, the stroke of the needle portion 82 can be accurately controlled to improve the accuracy of the urea nozzle 12.
请参图59所示,所述延伸部92设有集流腔921,所述阀针822延伸入所述集流腔921中。所述磁性部81设有与所述收容腔322连通的第一连通孔811,所述阀针部82设有与所述第一连通孔811连通的第二连通孔823,所述锥形部821设有将所述第二连通孔823与所述集流腔921连通的第三连通孔824。所述旋流槽852与所述集流腔921连通。所述套筒部122的下部收容在所述容纳腔94中,所述套筒部122凸出第四上表面911的部分收容在所述收容腔322中。所述环形冷却槽916位于所述集流腔921的***。Referring to FIG. 59, the extension portion 92 is provided with a manifold 921, and the valve needle 822 extends into the manifold 921. The magnetic portion 81 is provided with a first communication hole 811 communicating with the receiving cavity 322, and the valve needle portion 82 is provided with a second communication hole 823 communicating with the first communication hole 811, the tapered portion The 821 is provided with a third communication hole 824 that communicates the second communication hole 823 with the manifold 921. The swirl groove 852 is in communication with the manifold 921. A lower portion of the sleeve portion 122 is received in the accommodating cavity 94, and a portion of the sleeve portion 122 protruding from the fourth upper surface 911 is received in the accommodating cavity 322. The annular cooling groove 916 is located at the periphery of the collecting chamber 921.
可以理解,在本发明的其他实施方式中,例如集成装置应用于向发动机的排气中喷射燃料,以实现下游的柴油颗粒过滤器(DPF)的再生。在这种应用下,所述尿素泵11可以被替换为燃料泵,所述尿素喷嘴12可以被替换为燃料喷嘴,所述尿素溶液可以被替换为燃料。这种变化对所属技术领域的技术人员是能够理解的,在此不再赘述。It will be appreciated that in other embodiments of the invention, for example, an integrated device is applied to inject fuel into the exhaust of the engine to effect regeneration of the downstream diesel particulate filter (DPF). In this application, the urea pump 11 can be replaced with a fuel pump, which can be replaced with a fuel nozzle, which can be replaced with a fuel. Such changes can be understood by those skilled in the art and will not be described herein.
为了便于理解本发明,尿素泵与燃料泵统称为泵,尿素喷嘴与燃料喷嘴统称为喷嘴,尿素溶
液与燃料统称为流体介质。In order to facilitate the understanding of the present invention, the urea pump and the fuel pump are collectively referred to as a pump, and the urea nozzle and the fuel nozzle are collectively referred to as a nozzle, and the urea solution
Liquid and fuel are collectively referred to as fluid media.
相较于现有技术,本发明的集成装置1是一种集成化的设计,可以省去或缩短现有技术中用以连接泵与喷嘴的尿素管,也可以省去现有技术的泵供给单元中各种传感器与线束之间的插接件,也可以无需加热解冻装置,因此可靠性较高。本发明的集成装置1结构紧凑,体积小,便于各种车型的安装。另外,本发明的集成装置1中内部流体介质通道较短,压降小,泵与喷嘴之间的死容积小,效率较高。温度传感器171与压力传感器172离喷嘴近,喷射压力精度高。另外,通过分别对泵以及喷嘴进行独立控制,避免了喷嘴的动作是由泵的动作所驱动,从而提高了控制的精确度。由于喷嘴的喷***度提高了,从而能够使喷入排气中的尿素的量与氮氧化合物达到合适的比例,降低了因过多喷射尿素而产生的结晶风险。本发明的集成装置1可以采用水冷,使残留在集成装置1中的尿素温度达不到结晶点,不易产生结晶。Compared with the prior art, the integrated device 1 of the present invention is an integrated design, which can omit or shorten the prior art urea pipe for connecting the pump and the nozzle, and can also save the prior art pump supply. The connectors between the various sensors and the harness in the unit can also be used without the need to heat the defrosting device, so the reliability is high. The integrated device 1 of the present invention is compact in structure and small in size, and is convenient for installation of various types of vehicles. In addition, in the integrated device 1 of the present invention, the internal fluid medium passage is short, the pressure drop is small, the dead volume between the pump and the nozzle is small, and the efficiency is high. The temperature sensor 171 and the pressure sensor 172 are close to the nozzle, and the injection pressure accuracy is high. In addition, by independently controlling the pump and the nozzle separately, it is avoided that the action of the nozzle is driven by the action of the pump, thereby improving the accuracy of the control. Since the injection accuracy of the nozzle is improved, the amount of urea injected into the exhaust gas can be appropriately proportional to the nitrogen oxide compound, and the risk of crystallization due to excessive injection of urea is lowered. The integrated device 1 of the present invention can be water-cooled so that the temperature of the urea remaining in the integrated device 1 does not reach the crystallization point, and crystallization is less likely to occur.
以上实施例仅用于说明本发明而并非限制本发明所描述的技术方案,对本说明书的理解应该以所属技术领域的技术人员为基础,尽管本说明书参照上述的实施例对本发明已进行了详细的说明,但是,本领域的普通技术人员应当理解,所属技术领域的技术人员仍然可以对本发明进行修改或者等同替换,而一切不脱离本发明的精神和范围的技术方案及其改进,均应涵盖在本发明的权利要求范围内。
The above embodiments are only intended to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. The understanding of the present specification should be based on those skilled in the art, although the present specification has been described in detail with reference to the above embodiments. It should be understood by those skilled in the art that the present invention may be modified or equivalently modified by those skilled in the art without departing from the spirit and scope of the invention. Within the scope of the claims of the present invention.
Claims (27)
- 一种泵与喷嘴的集成装置,其中所述泵用以向所述喷嘴泵送流体介质,所述喷嘴用以向发动机的排气中喷射该流体介质,其特征在于:所述集成装置包括泵组件以及喷嘴组件;所述泵组件包括泵组件壳体以及与所述泵组件壳体相配合的所述泵,所述泵组件壳体包括位于所述泵的上游且与所述泵连通的入口通道以及位于所述泵的下游且与所述泵连通的出口通道,所述出口通道与所述喷嘴组件连通;所述泵组件包括用以驱动所述泵的电机线圈、与所述电机线圈相互作用的磁性体、位于所述磁性体下方的弹性体、***述磁性体与所述弹性体的金属罩以及相互啮合的第一齿轮组件与第二齿轮组件,其中所述磁性体与所述弹性体分别套接在金属骨架的上、下两端,所述金属骨架的末端设有与所述弹性体相抵压的勾部;所述第一齿轮组件包括第一齿轮轴以及第一齿轮,所述第二齿轮组件包括第二齿轮轴以及第二齿轮,所述第一齿轮与所述第二齿轮相互啮合;所述喷嘴组件包括喷嘴组件壳体以及与所述喷嘴组件壳体相配合的所述喷嘴,所述喷嘴组件还包括用以驱动所述喷嘴的喷嘴线圈,其中所述电机线圈与所述喷嘴线圈分别进行独立控制。An integrated pump and nozzle device, wherein the pump is configured to pump a fluid medium to the nozzle, the nozzle for injecting the fluid medium into an exhaust of an engine, wherein the integrated device comprises a pump An assembly and a nozzle assembly; the pump assembly including a pump assembly housing and the pump cooperating with the pump assembly housing, the pump assembly housing including an inlet upstream of the pump and in communication with the pump a passage and an outlet passage downstream of the pump and in communication with the pump, the outlet passage being in communication with the nozzle assembly; the pump assembly including a motor coil for driving the pump, and the motor coil mutual a magnetic body acting, an elastic body located under the magnetic body, a metal cover accommodating the magnetic body and the elastic body, and a first gear assembly and a second gear assembly meshing with each other, wherein the magnetic body and the magnetic body The elastic bodies are respectively sleeved on the upper and lower ends of the metal skeleton, and the end of the metal skeleton is provided with a hook portion that is pressed against the elastic body; the first gear assembly includes a first gear shaft and a gear, the second gear assembly including a second gear shaft and a second gear, the first gear and the second gear meshing with each other; the nozzle assembly including a nozzle assembly housing and the nozzle assembly housing In conjunction with the nozzle, the nozzle assembly further includes a nozzle coil for driving the nozzle, wherein the motor coil and the nozzle coil are independently controlled.
- 如权利要求1所述的集成装置,其特征在于:所述泵为尿素泵,所述喷嘴为尿素喷嘴,所述流体介质为尿素溶液。The integrated device of claim 1 wherein said pump is a urea pump, said nozzle is a urea nozzle, and said fluid medium is a urea solution.
- 如权利要求1所述的集成装置,其特征在于:所述泵为燃料泵,所述喷嘴为燃料喷嘴,所述流体介质为燃料。The integrated device of claim 1 wherein said pump is a fuel pump, said nozzle is a fuel nozzle, and said fluid medium is a fuel.
- 如权利要求2所述的集成装置,其特征在于:所述集成装置包括与所述电机线圈以及所述喷嘴线圈连接的控制器,所述控制器分别对所述尿素泵以及所述尿素喷嘴进行独立控制。The integrated device according to claim 2, wherein said integrated device includes a controller coupled to said motor coil and said nozzle coil, said controller respectively performing said urea pump and said urea nozzle Independent control.
- 如权利要求2所述的集成装置,其特征在于:所述集成装置包括与所述出口通道连通的压力传感器以及连接在所述出口通道与所述入口通道之间的溢流元件。The integrated device of claim 2 wherein said integrated device includes a pressure sensor in communication with said outlet passage and an overflow member coupled between said outlet passage and said inlet passage.
- 如权利要求2所述的集成装置,其特征在于:所述集成装置包括安装在所述泵组件壳体内的温度传感器。The integrated device of claim 2 wherein said integrated device comprises a temperature sensor mounted within said pump assembly housing.
- 如权利要求2所述的集成装置,其特征在于:所述泵组件包括***述磁性体与所述弹性体的金属罩,所述电机线圈套接在所述金属罩的***;所述第一齿轮轴为主动轴,所述第二齿轮 轴为从动轴,所述第一齿轮轴高于所述第二齿轮轴。The integrated device according to claim 2, wherein said pump assembly comprises a metal cover for accommodating said magnetic body and said elastomer, said motor coil being sleeved on a periphery of said metal cover; said a gear shaft is a drive shaft, and the second gear The shaft is a driven shaft, and the first gear shaft is higher than the second gear shaft.
- 如权利要求7所述的集成装置,其特征在于:所述弹性体能够被压缩以吸收因尿素结冰所产生的膨胀体积。The integrated device of claim 7 wherein said elastomer is capable of being compressed to absorb an expanded volume produced by urea icing.
- 如权利要求1所述的集成装置,其特征在于:所述泵组件壳体设有***述第一齿轮与所述第二齿轮的齿轮槽,所述第一齿轮与所述第二齿轮外啮合,所述齿轮槽的一侧设有与所述入口通道连通的进液腔,所述齿轮槽的另一侧设有与所述出口通道连通的出液腔。The integrated device according to claim 1, wherein said pump assembly housing is provided with a gear groove for accommodating said first gear and said second gear, said first gear and said second gear Engagement, one side of the gear groove is provided with an inlet chamber communicating with the inlet passage, and the other side of the gear groove is provided with an outlet chamber communicating with the outlet passage.
- 如权利要求1所述的集成装置,其特征在于:所述喷嘴组件包括与所述喷嘴线圈相互作用的磁性部、位于所述磁性部下方的阀针部、作用在所述磁性部与所述阀针部之间的弹簧以及与所述阀针部配合的阀座。The integrated device according to claim 1, wherein said nozzle assembly includes a magnetic portion that interacts with said nozzle coil, a valve needle portion that is located below said magnetic portion, acts on said magnetic portion and said a spring between the valve needle portions and a valve seat that cooperates with the valve needle portion.
- 如权利要求10所述的集成装置,其特征在于:所述喷嘴线圈位于所述磁性部的***,所述阀针部设有阀针,所述阀座设有与所述阀针相配合的喷射孔。The integrated device according to claim 10, wherein said nozzle coil is located at a periphery of said magnetic portion, said valve needle portion is provided with a valve needle, and said valve seat is provided to cooperate with said valve needle Spray holes.
- 如权利要求11所述的集成装置,其特征在于:所述阀座包括焊接在所述喷嘴组件壳体上的旋流片,所述喷射孔设置在所述旋流片上,并且所述旋流片还设有与所述喷射孔连通的若干旋流槽。The integrated device of claim 11 wherein said valve seat includes a swirling vane welded to said nozzle assembly housing, said injection orifice being disposed on said swirling fin, and said swirling flow The sheet is also provided with a plurality of swirl grooves that communicate with the injection holes.
- 如权利要求2所述的集成装置,其特征在于:所述集成装置设有用以冷却所述尿素喷嘴的冷却组件,所述冷却组件通过冷却介质对所述尿素喷嘴进行冷却。The integrated device of claim 2 wherein said integrated device is provided with a cooling assembly for cooling said urea nozzle, said cooling assembly cooling said urea nozzle by a cooling medium.
- 如权利要求9所述的集成装置,其特征在于:所述泵组件壳体包括第一壳体、位于所述第一壳体下方的第二壳体以及位于所述第二壳体下方的第三壳体,所述第三壳体包括本体部以及自所述本体部向下延伸的凸起部;所述喷嘴组件壳体包括主体部以及自所述主体部向下延伸的延伸部,所述主体部设有***述尿素喷嘴的容纳腔以及***述凸起部的凹槽,所述容纳腔向下延伸入所述延伸部内。The integrated device of claim 9 wherein said pump assembly housing includes a first housing, a second housing below said first housing, and a second portion below said second housing a three-shell, the third housing includes a body portion and a protrusion extending downward from the body portion; the nozzle assembly housing includes a body portion and an extension portion extending downward from the body portion, The main body portion is provided with a receiving cavity for receiving the urea nozzle and a recess for receiving the convex portion, and the receiving cavity extends downward into the extending portion.
- 如权利要求14所述的集成装置,其特征在于:所述第一壳体包括第一上表面、第一下表面以及第一侧面,其中所述第一上表面设有第一环形槽、被所述第一环形槽包围的第一岛部以及收容在所述第一环形槽中的第一密封圈;所述第一岛部设有贯穿所述第一上表面与所述第一下表面的第一定位孔以及贯穿所述第一下表面的第二定位孔,所述尿素泵包括收容在所述第一定位孔 中的第一轴套以及收容在所述第二定位孔中的第二轴套,其中所述第一齿轮轴***所述第一轴套中,所述第二齿轮轴***所述第二轴套中。The integrated device of claim 14 wherein said first housing includes a first upper surface, a first lower surface, and a first side, wherein said first upper surface is provided with a first annular groove, a first island portion surrounded by the first annular groove and a first sealing ring received in the first annular groove; the first island portion is provided through the first upper surface and the first lower surface a first positioning hole and a second positioning hole penetrating the first lower surface, the urea pump comprising the first positioning hole a first bushing and a second bushing received in the second positioning hole, wherein the first gear shaft is inserted into the first bushing, and the second gear shaft is inserted into the second shaft Set in.
- 如权利要求15所述的集成装置,其特征在于:所述第一下表面设有连通所述第一定位孔与所述第二定位孔的第一泄荷槽。The integrated device according to claim 15, wherein the first lower surface is provided with a first relief groove that communicates with the first positioning hole and the second positioning hole.
- 如权利要求15所述的集成装置,其特征在于:所述第一岛部还包括贯穿所述第一上表面且与所述第二定位孔连通的第一导流槽以及贯穿所述第一上表面且与入口通道连通的第一连接孔;所述第一壳体设有贯穿所述第一下表面且与所述进液腔连通的第二连接孔以及贯穿所述第一下表面且与所述出液腔连通的出口孔。The integrated device according to claim 15, wherein said first island portion further comprises a first flow guiding groove extending through said first upper surface and communicating with said second positioning hole and extending through said first a first connecting hole communicating with the inlet passage; the first housing is provided with a second connecting hole penetrating the first lower surface and communicating with the liquid inlet chamber and extending through the first lower surface An outlet port that communicates with the outlet chamber.
- 如权利要求17所述的集成装置,其特征在于:所述第一壳体设有与所述出口孔连通的溢流元件收容槽,所述溢流元件安装在所述溢流元件收容槽内;当出口通道的压力高于设定值时,所述溢流元件打开以将部分尿素溶液返回到所述入口通道内。The integrated device according to claim 17, wherein said first housing is provided with an overflow member receiving groove communicating with said outlet hole, and said overflow member is mounted in said overflow member receiving groove When the pressure of the outlet passage is above a set value, the overflow element opens to return a portion of the urea solution to the inlet passage.
- 如权利要求14所述的集成装置,其特征在于:所述第二壳体包括第二上表面以及第二下表面,所述齿轮槽贯穿所述第二上表面与第二下表面。The integrated device of claim 14 wherein said second housing includes a second upper surface and a second lower surface, said gear slots extending through said second upper surface and said second lower surface.
- 如权利要求14所述的集成装置,其特征在于:所述本体部设有第三上表面,所述第三上表面设有第三环形槽以及被所述第三环形槽包围的第三岛部,所述第三岛部设有贯穿所述第三上表面的第三定位孔以及第四定位孔,所述第三定位孔与所述第四定位孔延伸入所述凸起部中;所述尿素泵包括收容在所述第三定位孔中的第三轴套以及收容在所述第四定位孔中的第四轴套,其中所述第一齿轮轴***所述第三轴套中,所述第二齿轮轴***所述第四轴套中。The integrated device according to claim 14, wherein said body portion is provided with a third upper surface, said third upper surface is provided with a third annular groove and a third island surrounded by said third annular groove The third island portion is provided with a third positioning hole and a fourth positioning hole penetrating the third upper surface, and the third positioning hole and the fourth positioning hole extend into the convex portion; The urea pump includes a third sleeve housed in the third positioning hole and a fourth sleeve received in the fourth positioning hole, wherein the first gear shaft is inserted into the third sleeve The second gear shaft is inserted into the fourth bushing.
- 如权利要求20所述的集成装置,其特征在于:所述第三岛部设有贯穿所述第三上表面的第二导流槽以及第三导流槽,其中所述第二导流槽与所述第三定位孔连通,所述第三导流槽与所述第四定位孔连通。The integrated device according to claim 20, wherein said third island portion is provided with a second flow guiding groove and said third flow guiding groove extending through said third upper surface, wherein said second guiding groove And communicating with the third positioning hole, the third guiding groove is in communication with the fourth positioning hole.
- 如权利要求2所述的集成装置,其特征在于:所述喷嘴组件壳体设有第一冷却通道、与所述第一冷却通道间隔设置的第二冷却通道以及密封在所述延伸部***的端盖,所述喷嘴组件壳体在所述端盖与所述延伸部之间形成了连通所述第一冷却通道与所述第二冷却通道的环形冷却槽,所述第一冷却通道与入口接头连接用以供发动机冷却液注入,所述第二冷却通道与出口接头 连接用以供发动机冷却液流出。The integrated device according to claim 2, wherein said nozzle assembly housing is provided with a first cooling passage, a second cooling passage spaced from said first cooling passage, and a periphery of said extension An end cap, the annular assembly cooling chamber forming an annular cooling groove connecting the first cooling passage and the second cooling passage between the end cover and the extension portion, the first cooling passage and the inlet a joint connection for injecting engine coolant, the second cooling passage and outlet joint Connected for engine coolant to flow out.
- 如权利要求2所述的集成装置,其特征在于:所述勾部设有易于将所述弹性体套接到所述金属骨架上的导引锥面。The integrated device according to claim 2, wherein said hook portion is provided with a guiding tapered surface that is easy to fit said elastic body to said metal skeleton.
- 如权利要求2所述的集成装置,其特征在于:所述金属骨架设有位于所述弹性体与所述磁性体之间的分隔板,所述金属骨架整体上呈中空的筒状,所述第一齿轮轴至少部分收容在所述金属骨架中。The integrated device according to claim 2, wherein the metal skeleton is provided with a partition plate between the elastic body and the magnetic body, and the metal skeleton has a hollow cylindrical shape as a whole. The first gear shaft is at least partially received in the metal frame.
- 如权利要求24所述的集成装置,其特征在于:所述弹性体设有径向延伸的装配孔,所述金属骨架设有对应于所述装配孔的固定孔,所述第一齿轮轴的上端通过安装在所述装配孔以及所述固定孔中的螺钉与所述金属骨架实现径向固定。The integrated device according to claim 24, wherein said elastic body is provided with a radially extending fitting hole, and said metal skeleton is provided with a fixing hole corresponding to said fitting hole, said first gear shaft The upper end is radially fixed to the metal skeleton by screws installed in the fitting hole and the fixing hole.
- 一种尾气后处理***,包括尾气后处理的喷射***以及尾气后处理的封装***,其中所述喷射***包括如权利要求1至25项中任意一项所述的集成装置,所述封装***包括位于所述集成装置下游的载体。An exhaust aftertreatment system comprising an exhaust aftertreatment exhaust system and an exhaust aftertreatment package system, wherein the injection system comprises the integrated device of any one of claims 1 to 25, the package system comprising A carrier located downstream of the integrated device.
- 一种集成装置的控制方法,其特征在于:所述集成装置为权利要求1至25项中任意一项所述的集成装置,所述控制方法包括:A control device for an integrated device, characterized in that the integrated device is the integrated device according to any one of claims 1 to 25, the control method comprising:驱动所述泵运转,通过所述入口通道将所述流体介质吸入所述泵;Driving the pump to operate, drawing the fluid medium into the pump through the inlet passage;经过所述泵的加压之后,通过所述出口通道将该流体介质输送至所述喷嘴;After the pump is pressurized, the fluid medium is delivered to the nozzle through the outlet passage;当达到喷射条件时,给所述喷嘴线圈通电,至少部分打开所述喷嘴以将该流体介质喷入所述发动机的排气中;其中:When the injection condition is reached, energizing the nozzle coil, at least partially opening the nozzle to inject the fluid medium into the exhaust of the engine; wherein:所述电机线圈与所述喷嘴线圈分别进行独立控制。 The motor coil and the nozzle coil are independently controlled.
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Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1380733A2 (en) * | 2002-07-11 | 2004-01-14 | Hydraulik-Ring Gmbh | Device for exhaust gas treatment of vehicle, especially for diesel engine vehicle |
US20090194604A1 (en) * | 2008-01-19 | 2009-08-06 | Clyde Meriwether Smith | Pulsed spray system of reduced power consumption |
CN102042065A (en) * | 2009-10-09 | 2011-05-04 | 通用汽车环球科技运作公司 | Method and apparatus for monitoring a reductant injection system in an exhaust aftertreatment system |
CN102297005A (en) * | 2011-09-13 | 2011-12-28 | 浙江邦得利汽车环保技术有限公司 | Selective catalytic reduction (SCR) urea jet device of diesel engine |
CN102459859A (en) * | 2009-06-11 | 2012-05-16 | 斯塔纳迪恩公司 | Injector having swirl structure downstream of valve seat |
CN102758672A (en) * | 2011-04-29 | 2012-10-31 | 北京理工大学 | SCR (silicon controlled rectifier) pump nozzle device |
CN102803671A (en) * | 2009-06-11 | 2012-11-28 | 斯塔纳迪恩公司 | Integrated pump and injector for exhaust after treatment |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1268862C (en) * | 2001-07-10 | 2006-08-09 | 日本电产三协株式会社 | Valve drive device |
FR2918576B1 (en) * | 2007-07-10 | 2009-10-09 | Inergy Automotive Systems Res | LIQUID SUPPLY SYSTEM FOR VEHICLE AND INTEGRATED PUMP / FILTER MODULE. |
DE102008012780B4 (en) * | 2008-03-05 | 2012-10-04 | Hydraulik-Ring Gmbh | exhaust treatment device |
JP6028888B2 (en) * | 2011-09-01 | 2016-11-24 | セイコーエプソン株式会社 | Pump and fluid ejection device |
CN103742383A (en) * | 2014-01-23 | 2014-04-23 | 苏州派格丽减排***有限公司 | Energy storage type supercharged electromagnetic plunger pump and measuring and injecting system used for SCR (Silicon Controlled Rectifier) emission reduction system |
CN206860261U (en) * | 2016-06-06 | 2018-01-09 | 天纳克(苏州)排放***有限公司 | Integrating device and exhaust gas aftertreatment system |
-
2017
- 2017-04-11 CN CN201720371594.6U patent/CN206860261U/en not_active Withdrawn - After Issue
- 2017-04-11 CN CN201710231508.6A patent/CN107461241B/en active Active
- 2017-04-11 WO PCT/CN2017/079995 patent/WO2017211117A1/en active Application Filing
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1380733A2 (en) * | 2002-07-11 | 2004-01-14 | Hydraulik-Ring Gmbh | Device for exhaust gas treatment of vehicle, especially for diesel engine vehicle |
US20090194604A1 (en) * | 2008-01-19 | 2009-08-06 | Clyde Meriwether Smith | Pulsed spray system of reduced power consumption |
CN102459859A (en) * | 2009-06-11 | 2012-05-16 | 斯塔纳迪恩公司 | Injector having swirl structure downstream of valve seat |
CN102803671A (en) * | 2009-06-11 | 2012-11-28 | 斯塔纳迪恩公司 | Integrated pump and injector for exhaust after treatment |
CN102042065A (en) * | 2009-10-09 | 2011-05-04 | 通用汽车环球科技运作公司 | Method and apparatus for monitoring a reductant injection system in an exhaust aftertreatment system |
CN102758672A (en) * | 2011-04-29 | 2012-10-31 | 北京理工大学 | SCR (silicon controlled rectifier) pump nozzle device |
CN102297005A (en) * | 2011-09-13 | 2011-12-28 | 浙江邦得利汽车环保技术有限公司 | Selective catalytic reduction (SCR) urea jet device of diesel engine |
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CN107461241B (en) | 2024-02-20 |
CN107461241A (en) | 2017-12-12 |
CN206860261U (en) | 2018-01-09 |
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