CN105351064A - Gasoline engine cooling system - Google Patents
Gasoline engine cooling system Download PDFInfo
- Publication number
- CN105351064A CN105351064A CN201510888205.2A CN201510888205A CN105351064A CN 105351064 A CN105351064 A CN 105351064A CN 201510888205 A CN201510888205 A CN 201510888205A CN 105351064 A CN105351064 A CN 105351064A
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- CN
- China
- Prior art keywords
- cylinder body
- cylinder
- cooling water
- cooling
- thermoregulator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/02—Arrangements for cooling cylinders or cylinder heads
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/12—Arrangements for cooling other engine or machine parts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
- F01P5/12—Pump-driving arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
- F01P7/165—Controlling of coolant flow the coolant being liquid by thermostatic control characterised by systems with two or more loops
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/02—Arrangements for cooling cylinders or cylinder heads
- F01P2003/027—Cooling cylinders and cylinder heads in parallel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2023/00—Signal processing; Details thereof
- F01P2023/08—Microprocessor; Microcomputer
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2031/00—Fail safe
- F01P2031/30—Cooling after the engine is stopped
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2060/00—Cooling circuits using auxiliaries
- F01P2060/02—Intercooler
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2060/00—Cooling circuits using auxiliaries
- F01P2060/12—Turbo charger
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a gasoline engine cooling system. The gasoline engine cooling system comprises an internal circulation system and an external circulation system, wherein the internal circulation system is used for cooling a cylinder body and a cylinder cover of a gasoline engine, and the external circulation system is used for cooling a supercharger and an intercooler of the gasoline engine. The gasoline engine cooling system can have different cooling capacities for the cylinder body and the cylinder cover of the engine according to different working states, and differential cooling is formed so that the cylinder body and the cylinder cover of the engine can work at the set optimum temperature points, and the water temperature and the temperature of the cylinder body can rise rapidly when the engine is just started or operates at an idle speed; meanwhile, when the temperature of the cylinder cover or the cylinder body is too high, a good internal cooling effect can be achieved; under the condition that the engine is stopped, a turbine can still be cooled through a cooling loop of the turbine supercharger although circulation of engine oil is stopped, and corrosion to the turbine supercharger caused by gasification of cooling liquid is prevented; furthermore, the owner can stop a vehicle without idling, the trouble is saved for the owner on one hand, and meaningless fuel consumption during idling is reduced on the other hand; the gasoline engine cooling system can save more energy and is more environmentally friendly.
Description
Technical field
The present invention relates to engine components cooling field, particularly a kind of petrol engine cooling system.
Background technique
A large amount of heats can be produced during engine operation, affect the working efficiency of charging efficiency and cylinder, therefore need to cool it.Exist on the motor of turbocharging technology, be usually provided with Inner eycle cooling system and external circulation cooling system.
Engine cylinder-body and cylinder cap form power-transmitting part jointly---the shell of piston and bent axle, a large amount of heats can be produced during motor acting, in order to this heat is discharged from motor body (i.e. cylinder block and cylinder cover), need to arrange cooling water passage in the cylinder block and cylinder cover of motor, to make cooling water flow be taken away by heat through cylinder block and cylinder cover, this is the Inner eycle cooling of motor.In engine working process, for improving mechanical efficiency and fuel economy, cylinder cap temperature needs lower, and center housing temperature needs relatively high, because cylinder cap temperature is low improve charging efficiency, increase air inflow, temperature is low and air inflow can promote perfect combustion greatly, reduces the formation of NOx, improve output power, center housing temperature is higher, can reduce frictional loss, directly improves fuel efficiency and improves output power, indirectly reducing surge pressure and temperature in cylinder; And the cooling system of existing motor, cooling water pumps into cylinder body by water pump and enters cylinder cap again, or enter cylinder body and cylinder cap respectively, make cooling water with the circulation of the Nonstop running of motor, this kind of type of cooling can not carry out differentiationization cooling to gray iron, often causes automobile cooling capacity bigger than normal, can not reach the perfect condition of " cylinder cap temperature is lower and center housing temperature is relatively high " this engine thermal work, especially, when just starting at motor, fuel consume is larger; And each position of motor when motor just starts lubricant oil does not also put in place, and engine block temperature is too low, can produce the dry grinding of parts, causes the component premature wears such as cylinder sleeve, axle journal, gear.
And outer circulation cools the cooling of pressurized machine and the intercooler referred to motor, in turbosupercharged engine, can require that car owner does not stop working immediately after running at high speed for a long time, but allow engine idling operation a period of time, because stop working immediately, liquid circulation also stops thereupon, and cooling liquid gasifies, corrosion turbosupercharger; Machine oil runs into high temperature and also can go bad, and loses lubrication, makes turbo impairment.This kind of type of cooling can affect the driving comfortability of driver greatly, and when car owner stops working immediately because of urgency, also can cause damage to turbosupercharger.
Therefore, be necessary to provide a kind of petrol engine cooling system, not only can have different cooling capacities for different working staties to the cylinder body of motor and cylinder cap, forming region differentiation cooling, make the cylinder body of motor and cylinder cap in respective optimum temperature set-point work, and when motor has just started or idling travels, make water temperature and cylinder body rapid temperature increases, reduce oil consumption, simultaneously cylinder cap or center housing temperature too high time, there is cooling effect preferably, and the cooling that can normally can ensure engine supercharging system when engine operation, after engine misses state, still can ensure the cooling effect of pressurization system, reduce the damage to turbosupercharger.
Summary of the invention
In view of this, the invention provides a kind of petrol engine cooling system, not only can have different cooling capacities for different working staties to the cylinder body of motor and cylinder cap, forming region differentiation cooling, make the cylinder body of motor and cylinder cap in respective optimum temperature set-point work, and when motor has just started or idling travels, make water temperature and cylinder body rapid temperature increases, reduce oil consumption, simultaneously cylinder cap or center housing temperature too high time, there is cooling effect preferably, and the cooling that can normally can ensure engine supercharging system when engine operation, after engine misses state, still can ensure the cooling effect of pressurization system, reduce the damage to turbosupercharger.
A kind of petrol engine cooling system of the present invention, comprises the internal circulation system that the cylinder block and cylinder cover for petrol engine cools and the external circulating system cooled for pressurized machine and the intercooler of petrol engine;
Described internal circulation system comprises gray iron, for providing the water pump of cooling water for cylinder body and cylinder cap and can carrying out the radiator I that dispels the heat by inner loop cooling water, the cooling water waterexit end of described cylinder cap is provided with water-supplying chamber, and described cylinder interior is formed with cylinder block cooling water road; Also comprise cylinder body thermoregulator and cylinder cap thermoregulator, described cylinder body thermoregulator is arranged on the water inlet in cylinder block cooling water road for controlling opening and closing, the cooling water waterexit end that described cylinder cap thermoregulator is arranged on for application cylider cover in water-supplying chamber is communicated with the keying of motor, opens temperature and open temperature higher than at the beginning of described cylinder body thermoregulator at the beginning of described cylinder cap thermoregulator;
At the beginning of cooling water temperature is lower than cylinder body thermoregulator, open temperature, cooling water is to Cooling of Cylinder Head, and not to cylinder body cooling, and cooling water gets back to water pump without radiator I;
When cooling water temperature is opened between temperature between opening at the beginning of cylinder body thermoregulator at the beginning of temperature and cylinder cap thermoregulator, cooling water all cools cylinder body and cylinder cap, and now cooling water still gets back to water pump without radiator I;
At the beginning of cooling water temperature is higher than cylinder cap thermoregulator, open temperature, cooling water all cools cylinder body and cylinder cap, and cooling water can return water pump through radiator I;
Described external circulating system comprise pressurized machine, intercooler, for providing the electric control pump of cooling water and forming the cooling line of water circulation path; Described external circulating system also comprises control system, described control system at least comprises processing unit and the detection unit I be attached thereto respectively and timing circuit, described detection unit I is for detecting the misfire signals of motor, described processing unit is for receiving described misfire signals and exporting control command to timing circuit, and described timing circuit is used for triggering timing and exports timing end signal to processing unit after timing terminates; Described electric control pump is connected with described processing unit, and described processing unit controls electric control pump after receiving timing end signal and quits work.
Further, the water intake of the Cooling of Cylinder Head water channel of described cylinder cap keeps cooling water to enter all the time;
After cylinder body thermoregulator is opened, import in the Cooling of Cylinder Head water channel of cylinder cap after the water outlet of cooling water from cylinder block cooling water road of cylinder body cooling is flowed out.
Further, described internal circulation system also comprises heater and machine oil cooler;
Before opening at the beginning of cylinder cap thermoregulator, from the cooling water waterexit end of cylinder cap, cooling water out all returns water pump through heater and machine oil cooler successively;
After opening at the beginning of cylinder cap thermoregulator, from the cooling water waterexit end of cylinder cap, cooling water part out returns water pump through heater and machine oil cooler successively, and part gets back to water pump through radiator I in addition;
Water-supplying chamber is provided with and keeps the warm braw be often communicated with to be communicated with water outlet with the feed-water end of the heater of motor.
Further, cylinder body is provided with the cylinder body thermoregulator mounting hole extended to cylinder interior in the position of corresponding cylinder body cooling water channel water intake, cylinder body thermoregulator mounting hole the inner is communicated with cylinder block cooling water road, described cylinder body is also provided with and pumps into cooling water and the cylinder block cooling water inlet channel be communicated with cylinder body thermoregulator mounting hole sidepiece for water pump;
Described cylinder body thermoregulator comprises cylinder body temperature adjustment component and is installed on the inner scaffold with cylinder block cooling water road connectivity part of cylinder body thermoregulator mounting hole for stationary housing temperature adjustment component.
Further, scaffold comprises the end cap that can be fixedly connected with cylinder body and is connected with end cap and cylinder body temperature adjustment component can be fixed the fixed body being stretched into described thermoregulator mounting hole inside and arrange;
Described fixed body is made up of the clamping plate that at least two become clamp position to arrange, and described cylinder body temperature adjustment component, between clamping plate, forms radial direction to cylinder body temperature adjustment component between clamping plate and grips.
Further, cylinder body temperature adjustment component is fixed on clamping plate by the limit structure that vertically moves relative to clamping plate for limiting it, described limit structure by the draw-in groove that clamping plate are arranged and by the circle edge of the upper bracket of cylinder body temperature adjustment component extend radially outward formed and the edge clipping inserting described draw-in groove form.
Further, end cap comprises lid body and is arranged at lid body inner side surface and forms the circular orientation portion of locating, position boss structure outside circular orientation portion for embedding cylinder body;
The boss structure place in circular orientation portion adds the seal ring I for forming sealing between inboard wall of cylinder block;
The upper bracket periphery of described cylinder body temperature adjustment component adds the seal ring II for forming sealing between inboard wall of cylinder block.
Further, opening temperature at the beginning of cylinder cap thermoregulator higher than the value range opening temperature at the beginning of described cylinder body thermoregulator is 20 DEG C-25 DEG C.
Further, detection unit II, is connected with described processing unit, for detecting the actuating signal of motor; After processing unit receives actuating signal, control electric control pump start working.
Further, cooling line comprises for the intercooler intake pipe of intercooler cooling water inlet and the intercooler return pipe for intercooler cooling water outlet, also comprise for pressurized machine cooling water inlet volume pressurized machine intake pipe and the pressurized machine return pipe for the water outlet of pressurized machine cooling water, one-body moldedly on described intercooler intake pipe be provided with the pressurized machine intake pipe that the feed-water end for pressurized machine intake pipe is communicated with and be communicated with pipeline section, described intercooler return pipe is provided with the pressurized machine return pipe connection pipeline section that the waterexit end for pressurized machine return pipe is communicated with.
Beneficial effect of the present invention: petrol engine cooling system of the present invention, wherein, because cylinder body thermoregulator is arranged at the water inlet in cylinder block cooling water road in internal circulation system, cylinder cap thermoregulator is arranged on the waterexit end of cylinder cap, and open temperature at the beginning of cylinder cap thermoregulator and open temperature higher than at the beginning of described cylinder body thermoregulator, the opening and closing in the major cycle water route controlling to be communicated with engine radiator I is responsible for by cylinder cap thermoregulator, be responsible for controlling the internal watercourses circulating path between cylinder block and cylinder cover by cylinder body thermoregulator, when cylinder body thermoregulator cuts out, circulating path is that cooling water directly flows in cylinder cap, rapid temperature increases when now can ensure idling, thus reduction oil consumption, when cylinder body thermoregulator is opened, circulating path is that cooling water flows to cylinder body and cylinder cap respectively, cooling effect is remarkable, be conducive to reducing heat load, in a word, internal circulation system in the present invention can have different cooling capacities for different working staties to the cylinder body of motor and cylinder cap, forming region differentiation cooling, make the cylinder body of motor and cylinder cap in respective optimum temperature set-point work, and when motor has just started or idling travels, make water temperature and cylinder body rapid temperature increases, thus reduce oil consumption, simultaneously cylinder cap or center housing temperature too high time, there is again good cooling effect.
In addition, external circulating system in the present invention is by detecting the misfire signals of motor, timing circuit work is controlled by processing unit, then after timing terminates, order electric control pump quits work again, make when tail-off, although now the circulation of machine oil stops, still can be dispelled the heat for turbine by the cooling circuit of turbosupercharger, prevent cooling liquid from gasifying and corrosion is caused to turbosupercharger, and car owner can be stopped without the need to idling, eliminate the trouble of car owner, fuel consume meaningless when also saving on the other hand idling, energy-conserving and environment-protective more.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is overall structure schematic diagram of the present invention;
Fig. 2 is Fig. 1 plan view;
Fig. 3 in the present invention when water temperature is less than waterway circulating figure when to open temperature at the beginning of cylinder body thermoregulator;
Fig. 4 in the present invention when water temperature is opening waterway circulating figure when opening between temperature at the beginning of temperature to cylinder cap thermoregulator at the beginning of cylinder body thermoregulator;
Fig. 5 in the present invention when water temperature is greater than waterway circulating figure when to open temperature at the beginning of cylinder cap thermoregulator;
Fig. 6 is the cylinder body thermoregulator structural representation in the present invention;
Fig. 7 is the cylinder body thermoregulator cross-sectional view in the present invention;
Fig. 8 is that cylinder body thermoregulator in the present invention and cylinder body assemble schematic diagram;
Fig. 9 is the housing structure schematic diagram in the present invention;
Figure 10 is the scaffold structural representation of the cylinder body thermoregulator in the present invention;
Figure 11 is the sectional structure chart of the scaffold of cylinder body thermoregulator in the present invention;
Figure 12 is the control system flow chart of external circulating system in the present invention;
Figure 13 is the cooling line layout plan of external circulating system in the present invention.
Embodiment
Fig. 1 is overall structure schematic diagram of the present invention, Fig. 2 is Fig. 1 plan view, Fig. 3 in the present invention when water temperature is less than waterway circulating figure when to open temperature at the beginning of cylinder body thermoregulator, Fig. 4 in the present invention when water temperature is opening waterway circulating figure when opening between temperature at the beginning of temperature to cylinder cap thermoregulator at the beginning of cylinder body thermoregulator, Fig. 5 in the present invention when water temperature is greater than waterway circulating figure when to open temperature at the beginning of cylinder cap thermoregulator, Fig. 6 is the cylinder body thermoregulator structural representation in the present invention, Fig. 7 is the cylinder body thermoregulator cross-sectional view in the present invention, Fig. 8 is that cylinder body thermoregulator in the present invention and cylinder body assemble schematic diagram, Fig. 9 is the housing structure schematic diagram in the present invention, Figure 10 is the scaffold structural representation of the cylinder body thermoregulator in the present invention, Figure 11 is the sectional structure chart of the scaffold of cylinder body thermoregulator in the present invention, Figure 12 is the control system flow chart of external circulating system in the present invention, Figure 13 is the cooling line layout plan of external circulating system in the present invention, as shown in the figure: the petrol engine cooling system of the present embodiment, comprise cylinder body 1, cylinder cap 2, for providing the water pump of cooling water for cylinder body and cylinder cap and the radiator I that dispels the heat can being carried out by inner loop cooling water, the cooling water waterexit end of cylinder cap 2 is provided with water-supplying chamber 3, cylinder body 1 inside is formed with cylinder block cooling water road 1-1, also comprise cylinder body thermoregulator 4 and cylinder cap thermoregulator 5, cylinder body thermoregulator 4 is arranged on the water inlet of cylinder block cooling water road 1-1, and cylinder cap thermoregulator 5 is arranged in water-supplying chamber 3 to open and close with the radiator I 9 of motor for the cooling water waterexit end of application cylider cover 2 and is communicated with, open temperature at the beginning of cylinder cap thermoregulator 5 and open temperature higher than at the beginning of described cylinder body thermoregulator 4, wherein, the temperature adjustment component 4-1 part of cylinder body thermoregulator 4 and cylinder cap thermoregulator 5 is conventional wax formula thermoregulator, the main valve 4-1-3 mainly comprising upper bracket 4-1-1, lower support frame 4-1-2 and be arranged on for opening and closing cooling water channel between upper and lower support, belongs to prior art, does not repeat them here,
Needed for cylinder body 1 and cylinder cap 2, cooling water is provided by the water pump 6 of motor, open temperature at the beginning of cylinder cap thermoregulator 5 and open temperature higher than at the beginning of described cylinder body thermoregulator 4, wherein, it is 70-85 DEG C that cylinder body thermoregulator 4 first opens temperature to standard-sized sheet temperature range, it is 92-106 DEG C that cylinder cap thermoregulator 5 first opens temperature to standard-sized sheet temperature range, and to open temperature at the beginning of cylinder cap thermoregulator 5 higher than the value range opening temperature at the beginning of described cylinder body thermoregulator 4 be 20 DEG C-25 DEG C, preferably 20 DEG C, 22 DEG C, 25 DEG C;
When cooling water temperature is when opening below temperature at the beginning of cylinder body thermoregulator 4, cylinder body thermoregulator 4 cuts out, and now cooling water is part short circle state, and cooling water does not flow through cylinder block cooling water road, but flow through Cooling of Cylinder Head water channel to Cooling of Cylinder Head, and cooling water gets back to water pump 6 without the radiator I 9 of motor;
When open temperature at the beginning of cooling water temperature is higher than cylinder body thermoregulator 4 but lower than cylinder cap thermoregulator 5 at the beginning of open temperature time, cylinder body thermoregulator 4 is opened, now cooling water is whole short circle, and cooling water flow is through cylinder block cooling water road and Cooling of Cylinder Head water channel, and cooling water gets back to water pump 6 without radiator I 9 equally;
When opening temperature at the beginning of cooling water temperature is higher than cylinder cap thermoregulator 5, cylinder body thermoregulator 4 and cylinder cap thermoregulator 5 are all opened, and now cooling water is major cycle, and cooling water flow is through cylinder block cooling water road and Cooling of Cylinder Head water channel, and cooling water directly gets back to water pump 6 through radiator I 9.
In addition, in the present embodiment, external circulating system comprise pressurized machine 10, intercooler 11, for providing the electric control pump 13 of cooling water and forming the cooling line of water circulation path, external circulating system also comprises control system, control system at least comprises processing unit 14 and the detection unit I 15 be attached thereto respectively and timing circuit 16, detection unit I 15 is for detecting the misfire signals of motor, processing unit 14 is for receiving described misfire signals and exporting control command to timing circuit 16, and timing circuit 16 is for triggering timing and export timing end signal to processing unit 14 after timing terminates, electric control pump 13 is connected with processing unit 14, and processing unit 14 controls electric control pump 13 and quits work after receiving timing end signal, certainly, also comprise the power supply for powering to electric control pump 13, power supply and electric control pump 13 are the independent agency arranged separately, controlled by processing unit 14, wherein, processing unit 14 is integrated chip or controller, detection unit I 15 is for detecting misfire signals, misfire signals be that detection unit I 15 detects that engine ignition switch is in closed condition and motor transfers flameout state to from running state time signal, timing circuit 16 is prior art circuits structure, realization can start timing and export timing end signal to processing unit 14 at the end of timing, for prior art, do not repeat them here, and, processing unit 14 wherein and timing circuit 16 all can realize by existing structure, do not relate to the improvement in any program.
In the present embodiment, the water intake of the Cooling of Cylinder Head water channel of described cylinder cap 2 keeps cooling water to enter all the time; Namely no matter whether cylinder body thermoregulator 4 and cylinder cap thermoregulator 5 open or close, and cooling water can remain that flowing through Cooling of Cylinder Head water channel cools cylinder cap 2, thus ensures to cool cylinder cap 2 all the time in engine working process;
After cylinder body thermoregulator 4 is opened, import in the Cooling of Cylinder Head water channel of cylinder cap 2 to the cooling water that cylinder body 1 cools after the water outlet of cylinder block cooling water road 1-1 flows out; Namely after cylinder body thermoregulator 4 is opened, cooling water can enter in cylinder block cooling water road 1-1 and cool cylinder body 1, cooling water in cylinder block cooling water road 1-1 finally out can flow into afterwards in cylinder cap 2 in cylinder body 1, and import in Cooling of Cylinder Head water channel, and flow out cylinder cap 2 from the waterexit end of Cooling of Cylinder Head water channel, make no matter to be that cylinder body 1 cooling water and cylinder cap 2 cooling water finally can incorporate to same temperature value.
In the present embodiment, described petrol engine cooling system also comprises heater and machine oil cooler;
Before opening at the beginning of cylinder cap thermoregulator, from the cooling water waterexit end of cylinder cap, cooling water out all returns water pump through heater and machine oil cooler successively;
After opening at the beginning of cylinder cap thermoregulator, from the cooling water waterexit end of cylinder cap, cooling water part out returns water pump through heater and machine oil cooler successively, and part gets back to water pump through radiator I in addition;
Water-supplying chamber 3 is provided with and keeps the warm braw be often communicated with to be communicated with water outlet 3-1 with the feed-water end of the heater 7 of motor;
Namely the cooling water flowed out from the cooling water waterexit end of cylinder cap 2 can enter machine oil cooler 8 all the time after the feed-water end of heater 7, the feed-water end of heater 7 is supplied water and cooled machine oil, before cylinder cap thermoregulator 5 is opened, the cooling water flowed out from the cooling water waterexit end of cylinder cap 2 is all communicated with water outlet 3-1 through warm braw to enter warm braw peripheral passage, and finally get back to water pump 6 through machine oil cooler 8, water pump is by water pump water return pipeline 6-1 backwater, after cylinder cap thermoregulator 5 is opened, the cooling water flowed out from the cooling water waterexit end of cylinder cap 2 is that part enters warm braw peripheral passage through warm braw connection water outlet 3-1, partly enter radiator I 9 in addition to dispel the heat, return water pump 6.
In the present embodiment, cylinder body 1 is provided with the cylinder body thermoregulator mounting hole 1-2 extended to cylinder body 1 inside in the position of corresponding cylinder body cooling water channel 1-1 water intake, cylinder body thermoregulator mounting hole 1-2 the inner is communicated with cylinder block cooling water road 1-1, cylinder body 1 is also provided with and pumps into cooling water and the cylinder block cooling water inlet channel 1-3 be communicated with cylinder body thermoregulator mounting hole 1-2 sidepiece for water pump 6; Existing cylinder body thermoregulator more than 4 is taked to be installed on water-supplying chamber 3 end face of cylinder cap 2 or the outside of cylinder body 1 by flanged surface, namely thermoregulator is placed on the outside of cylinder body 1 or cylinder cap 2, not only temperature sense is insensitive, and need to take larger installing space, make cylinder body overall structure compact not; And by the mode that end face of flange is installed, need to smear sealer and seal, when service time is longer, sealing effect is difficult to ensure; By arranging cylinder body thermoregulator mounting hole 1-2 on cylinder body 1, and cylinder body thermoregulator mounting hole 1-2 the inner is positioned at the inner guest of cylinder body 1 is communicated with cylinder block cooling water road 1-1, make cylinder body thermoregulator 4 can be installed to cylinder body 1 inside, thus make compact structure, and ensure sealing.
In the present embodiment, cylinder body thermoregulator 4 comprises cylinder body temperature adjustment component 4-1 and is installed on the inner scaffold 4-2 with cylinder block cooling water road 1-1 connectivity part of cylinder body thermoregulator mounting hole 1-2 for stationary housing temperature adjustment component 4-1; Can be fit in cylinder body thermoregulator mounting hole 1-2 after fixing for cylinder body thermoregulator 4 easily.
In the present embodiment, scaffold 4-2 comprises the end cap 4-2-1 that can be fixedly connected with cylinder body 1 and is connected with end cap 4-2-1 and cylinder body temperature adjustment component 4-1 can be fixed the fixed body 4-2-2 being stretched into cylinder body thermoregulator mounting hole inside and arrange; Wherein, end cap 4-2-1 is provided with bolt connecting hole 4-2-1-1, end cap 4-2-1 only supports after mounting on the surface of cylinder body, cylinder body is provided with thermoregulator assembly installation position, bolt or other existing link are bolted hole and are fixed on cylinder body 1 by end cap 4-2-1, and fixed body 4-2-2 is used for temperature adjustment component to fix, and then fixed body 4-2-2 stretches into cylinder body 1 inside, fixed body 4-2-2 and end cap 4-2-1 is formed in one structure, can ensure structural strength; In addition, the cylinder block cooling water inlet channel 1-3 of cylinder body 1 is connected with cylinder body thermoregulator mounting hole 1-2 and enters cylinder body thermoregulator 4 for cooling water, cylinder body thermoregulator mounting hole 1-2 end is communicated with cylinder block cooling water road 1-1, and temperature adjustment component is for controlling the keying of cylinder body thermoregulator mounting hole 1-2 end and cylinder block cooling water road 1-1 connectivity part.
In the present embodiment, fixed body 4-2-2 is made up of the clamping plate 4-2-2-1 that at least two become clamp position to arrange, and cylinder body temperature adjustment component 4-1, between clamping plate 4-2-2-1, forms radial direction to cylinder body temperature adjustment component 4-1 between clamping plate 4-2-2-1 and grips; Wherein, clamping plate 4-2-2-1 can arrange two, three or four along the circumference of end cap 4-2-1, temperature adjustment component is formed fixing between clamping plate 4-2-2-1, clamping plate 4-2-2-1 can be flat board or arc plate, all can realize object of the present invention, structure is simple, but it is fixing reliable, and fixed body 4-2-2 overall weight can be reduced by clamping plate 4-2-2-1 structure, reach the object of motor loss of weight, in the present embodiment, clamping plate 4-2-2-1 arranges two and radially symmetrical, there is more stable means of fixation, and be uniformly distributed the load ability of each clamping plate 4-2-2-1.
In the present embodiment, cylinder body temperature adjustment component 4-1 by being fixed on clamping plate 4-2-2-1 for limiting it relative to the limit structure that clamping plate 4-2-2-1 vertically moves, limit structure by setting clamping plate 4-2-2-1 on draw-in groove 4-2-2-2 and by the circle edge of the upper bracket 4-1-1 of cylinder body temperature adjustment component 4-1 extend radially outward formed and the edge clipping 4-1-1-1 inserting draw-in groove 4-2-2-2 form; Edge clipping 4-1-1-1 snaps in the draw-in groove 4-2-2-2 of each clamping plate 4-2-2-1 to be formed and fixes, clamping plate 4-2-2-1 is made to form radial clamping to temperature adjustment component, mounting type is simple and reliable, and be easy to installation and removal, and the longitudinal direction of temperature adjustment component can be prevented and move radially, ensure stability is installed, and the object preventing from vibrating can be reached; In addition, draw-in groove 4-2-2-2 is arranged on the terminal part of each clamping plate 4-2-2-1, is rectangular groove structure.
In the present embodiment, end cap 4-2-1 comprises lid body 4-2-1-2 and is arranged at lid body 4-2-1-2 inner side surface and forms the circular orientation portion 4-2-1-3 located, boss structure 4-2-1-4 in position outside circular orientation portion for embedding cylinder body 1; Circular orientation portion is for embedding cylinder body 13 inside and the formation location and installation that matches with the pedestal that cylinder body 1 inside is arranged;
The boss structure place in circular orientation portion adds seal ring I 4-3 for forming sealing between cylinder body 1 inwall; The end face that seal ring I is positioned at boss structure is arranged around fixed body 4-2-2 circumference, and be installed to after on cylinder body 1 at scaffold 4-2, seal ring I is formed and seals between cylinder body 1 inwall and fixed body 4-2-2;
The upper bracket 4-1-1 periphery of cylinder body temperature adjustment component 4-1 adds seal ring II 4-4 for forming sealing between cylinder body 1 inwall.
In addition, in external circulating system, control system also comprises: detection unit II 17, is connected with described processing unit 14, for detecting the actuating signal of motor; After processing unit 14 receives actuating signal, control electric control pump 13 start working.
In the present embodiment, timing circuit 16 timing time T is 6-8min; Preferably 6min, 7min, 8min.
In the present embodiment, cooling line comprises for the intercooler intake pipe 12 of intercooler 11 cooling water inlet and the intercooler return pipe 18 for intercooler 11 cooling water outlet, also comprise and cool the pressurized machine intake pipe 19 of water inlet and the pressurized machine return pipe 20 for the water outlet of pressurized machine 10 cooling water for pressurized machine 10, one-body moldedly on intercooler intake pipe 12 be provided with the pressurized machine intake pipe that the feed-water end for pressurized machine intake pipe 19 is communicated with and be communicated with pipeline section 12-1, intercooler return pipe 18 is provided with the pressurized machine return pipe that the waterexit end for pressurized machine return pipe 20 is communicated with and is communicated with pipeline section 18-1, as shown in the figure, intercooler intake pipe 12 two ends are communicated with the water outlet of water pump and the water intake of intercooler 11 respectively, intercooler return pipe 18 two ends are communicated with the water outlet of intercooler 11 and the water intake of water pump respectively, the feed-water end of pressurized machine intake pipe 19 is directly communicated with pipeline section 12-1 and is communicated with for being intake with pressurized machine intake pipe, the waterexit end of pressurized machine intake pipe 19 is communicated with the water intake of pressurized machine 10, the feed-water end of pressurized machine return pipe 20 is communicated with the water outlet of pressurized machine 10, the waterexit end of pressurized machine return pipe 20 is directly communicated with pipeline section 18-1 and is communicated with for water outlet with pressurized machine return pipe, wherein, pressurized machine intake pipe be communicated with pipeline section 12-1 be communicated with pressurized machine return pipe pipeline section 18-1 respectively one_to_one corresponding be shaped on intercooler intake pipe 12 and intercooler return pipe 18, quick despatch can be realized, and good sealability can be had.
In the present embodiment, the current that automatic pressure intensifier return pipe connection pipeline section 18-1 enters intercooler return pipe 18 flow to the center line setting departing from pressurized machine return pipe 20 joint in direction; Automatic pressure intensifier return pipe is communicated with current that pipeline section 18-1 enters intercooler return pipe 18 and flows to tangential along joint pressurized machine return pipe 20, direction; Namely pressurized machine return pipe connection pipeline section 18-1 is tangentially connected with pressurized machine return pipe 20, the current entering intercooler return pipe 18 from automatic pressure intensifier return pipe connection pipeline section 18-1 can be made tangentially to enter, can not be formed with the interior cooling water flow refluxed from intercooler 111 of intercooler return pipe 18 and collide, ensure that flowing water is smooth and easy.
In the present embodiment, the current approach axis that pressurized machine intake pipe is communicated with pipeline section 12-1 becomes 60 ° of angles to arrange with current direction of advance in joint pressurized machine intake pipe 19; Ensure that water inlet is smooth and easy.
In the present embodiment, intercooler intake pipe 12, intercooler return pipe 18, pressurized machine intake pipe 19 and pressurized machine return pipe 20 entirety are bend pipe structure, and bending place is for seamlessly transitting structure; Rational in infrastructure, can prevent while there is rational trend and interference between all parts.
In the present embodiment, the feed-water end pipeline section of intercooler intake pipe 12 is the bend loss 12-2 of-70 ° of angles at 45 °, and waterexit end pipeline section is bend loss 12-3 in 90 °; Optimum, bend loss 2-1 is 45 °, 60 ° or 70 °.
In the present embodiment, the feed-water end pipeline section of intercooler return pipe 18 is the bend loss 18-2 of-110 ° in 90 °, and waterexit end pipeline section is straight length 18-3; Optimum, bend loss is 90 °, 100 °, 110 °.
In the present embodiment, intercooler intake pipe 12, intercooler return pipe 18, pressurized machine intake pipe 19 and pressurized machine return pipe 20 are metal tube; Can be aluminum pipe or steel pipe.
What finally illustrate is, above embodiment is only in order to illustrate technological scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technological scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (10)
1. a petrol engine cooling system, is characterized in that: comprise the internal circulation system that the cylinder block and cylinder cover for petrol engine cools and the external circulating system cooled for pressurized machine and the intercooler of petrol engine;
Described internal circulation system comprises gray iron, for providing the water pump of cooling water for cylinder body and cylinder cap and can carrying out the radiator I that dispels the heat by inner loop cooling water, the cooling water waterexit end of described cylinder cap is provided with water-supplying chamber, and described cylinder interior is formed with cylinder block cooling water road; Also comprise cylinder body thermoregulator and cylinder cap thermoregulator, described cylinder body thermoregulator is arranged on the water inlet in cylinder block cooling water road for controlling opening and closing, the cooling water waterexit end that described cylinder cap thermoregulator is arranged on for application cylider cover in water-supplying chamber is communicated with the keying of motor, opens temperature and open temperature higher than at the beginning of described cylinder body thermoregulator at the beginning of described cylinder cap thermoregulator;
At the beginning of cooling water temperature is lower than cylinder body thermoregulator, open temperature, cooling water is to Cooling of Cylinder Head, and not to cylinder body cooling, and cooling water gets back to water pump without radiator I;
When cooling water temperature is opened between temperature between opening at the beginning of cylinder body thermoregulator at the beginning of temperature and cylinder cap thermoregulator, cooling water all cools cylinder body and cylinder cap, and now cooling water still gets back to water pump without radiator I;
At the beginning of cooling water temperature is higher than cylinder cap thermoregulator, open temperature, cooling water all cools cylinder body and cylinder cap, and cooling water can return water pump through radiator I;
Described external circulating system comprise pressurized machine, intercooler, for providing the electric control pump of cooling water and forming the cooling line of water circulation path; Described external circulating system also comprises control system, described control system at least comprises processing unit and the detection unit I be attached thereto respectively and timing circuit, described detection unit I is for detecting the misfire signals of motor, described processing unit is for receiving described misfire signals and exporting control command to timing circuit, and described timing circuit is used for triggering timing and exports timing end signal to processing unit after timing terminates; Described electric control pump is connected with described processing unit, and described processing unit controls electric control pump after receiving timing end signal and quits work.
2. petrol engine cooling system according to claim 1, is characterized in that:
The water intake of the Cooling of Cylinder Head water channel of described cylinder cap keeps cooling water to enter all the time;
After cylinder body thermoregulator is opened, import in the Cooling of Cylinder Head water channel of cylinder cap after the water outlet of cooling water from cylinder block cooling water road of cylinder body cooling is flowed out.
3. petrol engine cooling system according to claim 1, is characterized in that:
Described internal circulation system also comprises heater and machine oil cooler;
Before opening at the beginning of cylinder cap thermoregulator, from the cooling water waterexit end of cylinder cap, cooling water out all returns water pump through heater and machine oil cooler successively;
After opening at the beginning of cylinder cap thermoregulator, from the cooling water waterexit end of cylinder cap, cooling water part out returns water pump through heater and machine oil cooler successively, and part gets back to water pump through radiator I in addition;
Water-supplying chamber is provided with and keeps the warm braw be often communicated with to be communicated with water outlet with the feed-water end of the heater of motor.
4. petrol engine cooling system according to claim 1, it is characterized in that: described cylinder body is provided with the cylinder body thermoregulator mounting hole extended to cylinder interior in the position of corresponding cylinder body cooling water channel water intake, cylinder body thermoregulator mounting hole the inner is communicated with cylinder block cooling water road, described cylinder body is also provided with and pumps into cooling water and the cylinder block cooling water inlet channel be communicated with cylinder body thermoregulator mounting hole sidepiece for water pump;
Described cylinder body thermoregulator comprises cylinder body temperature adjustment component and is installed on the inner scaffold with cylinder block cooling water road connectivity part of cylinder body thermoregulator mounting hole for stationary housing temperature adjustment component.
5. petrol engine cooling system according to claim 4, is characterized in that: described scaffold comprises the end cap that can be fixedly connected with cylinder body and is connected with end cap and cylinder body temperature adjustment component can be fixed the fixed body being stretched into described thermoregulator mounting hole inside and arrange;
Described fixed body is made up of the clamping plate that at least two become clamp position to arrange, and described cylinder body temperature adjustment component, between clamping plate, forms radial direction to cylinder body temperature adjustment component between clamping plate and grips.
6. petrol engine cooling system according to claim 5, it is characterized in that: described cylinder body temperature adjustment component is fixed on clamping plate by the limit structure that vertically moves relative to clamping plate for limiting it, described limit structure by the draw-in groove that clamping plate are arranged and by the circle edge of the upper bracket of cylinder body temperature adjustment component extend radially outward formed and the edge clipping inserting described draw-in groove form.
7. petrol engine cooling system according to claim 6, is characterized in that: end cap comprises lid body and is arranged at lid body inner side surface and forms the circular orientation portion of locating, position boss structure outside circular orientation portion for embedding cylinder body;
The boss structure place in circular orientation portion adds the seal ring I for forming sealing between inboard wall of cylinder block;
The upper bracket periphery of described cylinder body temperature adjustment component adds the seal ring II for forming sealing between inboard wall of cylinder block.
8. petrol engine cooling system according to claim 7, is characterized in that: opening temperature at the beginning of described cylinder cap thermoregulator higher than the value range opening temperature at the beginning of described cylinder body thermoregulator is 20 DEG C-25 DEG C.
9. petrol engine cooling system according to claim 1, is characterized in that: described control system also comprises: detection unit II, is connected with described processing unit, for detecting the actuating signal of motor; After processing unit receives actuating signal, control electric control pump start working.
10. petrol engine cooling system according to claim 9, it is characterized in that: described cooling line comprises for the intercooler intake pipe of intercooler cooling water inlet and the intercooler return pipe for intercooler cooling water outlet, also comprise for pressurized machine cooling water inlet volume pressurized machine intake pipe and the pressurized machine return pipe for the water outlet of pressurized machine cooling water, one-body moldedly on described intercooler intake pipe be provided with the pressurized machine intake pipe that the feed-water end for pressurized machine intake pipe is communicated with and be communicated with pipeline section, described intercooler return pipe is provided with the pressurized machine return pipe that the waterexit end for pressurized machine return pipe is communicated with and is communicated with pipeline section.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510888205.2A CN105351064B (en) | 2015-12-04 | 2015-12-04 | Gasoline engine cooling system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510888205.2A CN105351064B (en) | 2015-12-04 | 2015-12-04 | Gasoline engine cooling system |
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| CN105351064A true CN105351064A (en) | 2016-02-24 |
| CN105351064B CN105351064B (en) | 2018-01-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109060578A (en) * | 2018-09-06 | 2018-12-21 | 潍坊思博精工科技有限公司 | A kind of diesel engine cylinder head heat fatigue test device |
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| EP0810069A1 (en) * | 1996-05-28 | 1997-12-03 | QUINTON HAZELL plc | Kits for replacement of thermostatic valve assemblies |
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| CN105351064B (en) | 2018-01-02 |
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