CN204511587U - A kind of air assists SCR system integrated electromagnetic valve - Google Patents
A kind of air assists SCR system integrated electromagnetic valve Download PDFInfo
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- CN204511587U CN204511587U CN201520150596.3U CN201520150596U CN204511587U CN 204511587 U CN204511587 U CN 204511587U CN 201520150596 U CN201520150596 U CN 201520150596U CN 204511587 U CN204511587 U CN 204511587U
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- assists
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Exhaust Gas After Treatment (AREA)
Abstract
The utility model provides a kind of air to assist SCR system integrated electromagnetic valve, comprise vehicle-mounted compression barrel, described vehicle-mounted compression barrel connects valve body, it is characterized in that: in described valve body, be provided with air filter core, described air filter core connects air switching sol, described air switching sol connects definite value decompression venting valve, and described definite value decompression venting valve connects emptying solenoid valve, and described emptying solenoid valve connects urea injector by urea pump loop.This programme by air switching sol, emptying solenoid valve and a definite value decompression venting valve reasonable Arrangement together, is connected by pipeline, pipeline is short, without pipe joint, No leakage in valve body.
Description
Technical field
The utility model relates to solenoid valve market, specifically, relates to a kind of air and assists SCR system integrated electromagnetic valve.
Background technique
Current pollution of atmosphere is day by day serious, the automobile wherein using diesel engine to do power is important pollution sources, the topmost pollution sources of diesel engine are nitrogen oxide NOx, for reducing the discharge of NOx, the main technological route that automobile industry uses is exactly selective catalytic reduction (Selective Catalytic Reduction, SCR) by spraying the method for urea liquid in waste gas, the NOx in waste gas is reduced to harmless nitrogen, carbon dioxide and water.Along with the development of automotive industry, also increasing to the demand of SCR.
In order to improve the transformation efficiency of SCR system, the secondary injection of general employing gas.Traditional air assists SCR system to be all the solenoid valve, the reduction valve that adopt split, and the connection between valve and valve adopts the Placement of exterior line usually, this kind of mode makes system connector many, and system bulk is large and complicated, price is high, and there is a lot of leakage points.
Model utility content:
The technical problems to be solved in the utility model is to provide a kind of gas and assists SCR system integrated electromagnetic valve, has little, the easy installation of volume, leakage point is few, pressure regulation is stablized, cost is low feature.
The utility model adopts following technological scheme to realize model utility object:
A kind of air assists SCR system integrated electromagnetic valve, comprise vehicle-mounted compression barrel, described vehicle-mounted compression barrel connects valve body, it is characterized in that: in described valve body, be provided with air filter core, described air filter core connects air switching sol, described air switching sol connects definite value decompression venting valve, and described definite value decompression venting valve connects emptying solenoid valve, and described emptying solenoid valve connects urea injector by urea pump loop.
As the further restriction to the technical program, the upside of described air switching sol is provided with the first guide assembly of air switching sol, and the upper end of described emptying solenoid valve is provided with the first guide assembly of emptying solenoid valve.
As the further restriction to the technical program, the pipeline between described vehicle-mounted compression barrel and described air filter core is provided with compressed air inlet.
As the further restriction to the technical program, described definite value decompression venting valve connects baroceptor by baroceptor interface.
As the further restriction to the technical program, described definite value decompression venting valve also connects described urea pump loop by compressed air outlet.
As the further restriction to the technical program, described emptying solenoid valve connects described urea pump loop by evacuation of air outlet.
As the further restriction to the technical program, described urea injector is connected described urea pump loop by sparger air inlet with sparger urea inlet.
As the further restriction to the technical program, described decompression venting valve comprises vent, loads spring seat, relief spring, spool and protecgulum successively in described vent, and the described vent the other end loads bonnet.
Compared with prior art, advantage of the present utility model with good effect is: this programme is by together with air switching sol, emptying solenoid valve and a definite value decompression venting valve reasonable Arrangement, be connected by pipeline in valve body, pipeline is short, without pipe joint, No leakage; Be provided with air filter core, the large granular impurity in vehicle-mounted compression barrel can be avoided to enter in urea injector, avoid the spray orifice blocking urea injector; Be provided with definite value decompression venting valve and be arranged between air switching sol, emptying solenoid valve, pipe-line layout is reasonable, the two ends of definite value decompression venting valve seal with two fixed covers, guarantee forever not loosen, make the air-pressure stable entering urea injector, can make the atomizing effect of urea liquid better, more stable; Be provided with baroceptor, post-decompression atmospheric pressure value can be monitored, judge for system works and system failure judgement; Be provided with emptying solenoid valve, after engine stop, control pressurized air by emptying solenoid valve and enter urea pump loop, residual urine cellulose solution in urea pump, pressure piping and urea injector is discharged in engine exhaust pipe, avoid icing of urea solution or cause urea crystals, blocking urea supply passage due to moisture evaporation at low temperatures; Emptying solenoid valve adopts unidirectional protection design, has both played solenoid valve effect, and has played again one-way valve effect.
Accompanying drawing explanation
Fig. 1 is fundamental diagram of the present utility model;
Fig. 2 is mechanical structure portion schematic perspective view of the present utility model;
Fig. 3 is the sectional drawing that the utility model installs air filter core;
Fig. 4 is the sectional drawing that the utility model installs definite value decompression venting valve;
In figure: 1-air switching sol; 2-emptying solenoid valve; 3-definite value decompression venting valve; 4-air filter core; 5-valve body; 6-baroceptor; The vehicle-mounted compression barrel of 7-; 8-urea pump loop; 9-sparger air inlet; 10-sparger urea inlet; 11-urea injector; 12-line pencil casing; 13-lead terminal; 14-protecgulum; 15-spool; 16-relief spring; 17-spring seat; 18-bonnet; P-compressed air inlet; A1-compressed air outlet; A2-evacuation of air exports; A3-baroceptor interface; The first guide assembly of V1-air switching sol; The first guide assembly of V2-emptying solenoid valve.
Embodiment:
Below in conjunction with embodiment, further illustrate the utility model.
See Fig. 1, Fig. 1 shows the working principle of integrated electromagnetic valve, integrated electromagnetic valve is made up of air switching sol 1, emptying solenoid valve 2, definite value decompression venting valve 3 and air filter core 4, there are four interfaces to be connected with outside, are respectively: compressed air inlet P, compressed air outlet A1, evacuation of air outlet A2 and baroceptor interface A3.
Fig. 2 shows the stereoeffect of integrated electromagnetic valve, the first guide assembly V1 of air switching sol and the first guide assembly V2 of emptying solenoid valve is installed at valve body 5 top, by line pencil casing 12, the lead-in wire of first to the lead-in wire of first for air switching sol guide assembly V1 and emptying solenoid valve guide assembly V2 is become one, and connect and go up lead terminal 13.
Fig. 3 shows the sectional drawing of air filter core, and on valve body 5, air filter core 4 is installed at P place in compressed air inlet, filters the pressurized air entering integrated electromagnetic valve.
Fig. 4 shows the sectional drawing of definite value decompression venting valve, loads spring seat 17, relief spring 16, spool 15, protecgulum 14 in the vent on valve body 5 successively, and the vent the other end loads bonnet 18.
Described air filter core 4 is arranged on valve body 5 ingress, between air switching sol 1 and vehicle-mounted compression barrel 7, filters the pressurized air entering integrated electromagnetic valve, and its material is stainless steel.
After air switching sol 1, be provided with certain value decompression venting valve 3, the two ends of described definite value decompression venting valve 3 seal with two fixed covers, guarantee forever not loosen.
Be provided with a baroceptor in passage after definite value decompression venting valve 3, described baroceptor is connected with aftertreatment control unit DCU.
Be communicated with the air inlet of urea injector 11 through the post-decompression pressurized air of definite value decompression venting valve 3, another passage is communicated with the entrance of emptying solenoid valve 2.
The outlet of emptying solenoid valve 2 adopts unidirectional protection design; can ensure that the emptying required pressurized air of SCR system enters into the urea inlet of urea injector 11; and the urea in urea injector 11 can not enter into integrated electromagnetic valve, protection integrated electromagnetic valve is not by etch or the crystalline damage of urea liquid.
Air switching sol 1, emptying solenoid valve 2 are connected with aftertreatment control unit DCU.
Working procedure is as follows: after air assists the pre-filled state of SCR system to complete, air switching sol 1 is opened, pressurized air in vehicle-mounted compression barrel 7 enters in definite value decompression venting valve 3 through air filter core 4, pressurized air is decompressed to about 2bar, and now whether aftertreatment control unit DCU can decision-making system normally be worked by the force value reading baroceptor; Pressurized air, through the air pipe line that is connected with compressed air outlet A1, enters into the air inlet of urea injector 11, provides stable air pressure for the atomization of urea liquid to urea injector 11; When also power-off shut down by motor; air assists SCR system to enter emptying state; now aftertreatment control unit DCU control emptying solenoid valve 2 is opened; the pipeline that post-decompression pressurized air is connected with urea pump loop 8 through evacuation of air outlet A2 enters sparger urea inlet 10, by emptying for the urea in urea pump loop 8 and connected urea pipe.
Claims (8)
1. an air assists SCR system integrated electromagnetic valve, comprise vehicle-mounted compression barrel, described vehicle-mounted compression barrel connects valve body, it is characterized in that: in described valve body, be provided with air filter core, described air filter core connects air switching sol, described air switching sol connects definite value decompression venting valve, and described definite value decompression venting valve connects emptying solenoid valve, and described emptying solenoid valve connects urea injector by urea pump loop.
2. air according to claim 1 assists SCR system integrated electromagnetic valve, it is characterized in that: the upside of described air switching sol is provided with the first guide assembly of air switching sol, the upper end of described emptying solenoid valve is provided with the first guide assembly of emptying solenoid valve.
3. air according to claim 1 assists SCR system integrated electromagnetic valve, it is characterized in that: the pipeline between described vehicle-mounted compression barrel and described air filter core is provided with compressed air inlet.
4. air according to claim 1 assists SCR system integrated electromagnetic valve, it is characterized in that: described definite value decompression venting valve connects baroceptor by baroceptor interface.
5. air according to claim 1 assists SCR system integrated electromagnetic valve, it is characterized in that: described definite value decompression venting valve also connects described urea pump loop by compressed air outlet.
6. air according to claim 1 assists SCR system integrated electromagnetic valve, it is characterized in that: described emptying solenoid valve connects described urea pump loop by evacuation of air outlet.
7. air according to claim 1 assists SCR system integrated electromagnetic valve, it is characterized in that: described urea injector is connected described urea pump loop by sparger air inlet with sparger urea inlet.
8. air according to claim 1 assists SCR system integrated electromagnetic valve, it is characterized in that: described decompression venting valve comprises vent, load spring seat, relief spring, spool and protecgulum successively in described vent, the described vent the other end loads bonnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520150596.3U CN204511587U (en) | 2015-03-17 | 2015-03-17 | A kind of air assists SCR system integrated electromagnetic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520150596.3U CN204511587U (en) | 2015-03-17 | 2015-03-17 | A kind of air assists SCR system integrated electromagnetic valve |
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| Publication Number | Publication Date |
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| CN204511587U true CN204511587U (en) | 2015-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520150596.3U Active CN204511587U (en) | 2015-03-17 | 2015-03-17 | A kind of air assists SCR system integrated electromagnetic valve |
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| Country | Link |
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| CN (1) | CN204511587U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107448267A (en) * | 2017-07-01 | 2017-12-08 | 福士汽车零部件（济南）有限公司 | A kind of inlet air filtration component for air auxiliary SCR aftertreatment system |
| CN107701272A (en) * | 2017-10-31 | 2018-02-16 | 凯龙高科技股份有限公司 | A kind of urea supply system with high-pressure blowing function |
-
2015
- 2015-03-17 CN CN201520150596.3U patent/CN204511587U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107448267A (en) * | 2017-07-01 | 2017-12-08 | 福士汽车零部件（济南）有限公司 | A kind of inlet air filtration component for air auxiliary SCR aftertreatment system |
| CN107448267B (en) * | 2017-07-01 | 2024-03-26 | 福士汽车零部件（济南）有限公司 | Air inlet filter assembly for air-assisted SCR aftertreatment system |
| CN107701272A (en) * | 2017-10-31 | 2018-02-16 | 凯龙高科技股份有限公司 | A kind of urea supply system with high-pressure blowing function |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |