CN105201618B - A kind of dual cycle cooling system for including auxiliary pump - Google Patents
A kind of dual cycle cooling system for including auxiliary pump Download PDFInfo
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- CN105201618B CN105201618B CN201510680757.4A CN201510680757A CN105201618B CN 105201618 B CN105201618 B CN 105201618B CN 201510680757 A CN201510680757 A CN 201510680757A CN 105201618 B CN105201618 B CN 105201618B
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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
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- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The present invention relates to a kind of dual cycle cooling system for including auxiliary pump, includes high temperature circulation cooling system, low-temperature circulating cooling system and delay circulating cooling system；The high temperature circulation cooling system includes the first expansion tank, high temperature heat sink, engine cooling water jacket, the first water pump, electronic thermostat, oil cooler, auxiliary pump and warm wind；The low-temperature circulating cooling system, include the second expansion tank, low-temperature radiator, the second water pump, turbocharger, Electron pressurizing unit, charge air cooler and BSG.The application is respectively provided with high temperature heat sink and low-temperature radiator by setting two sets of circulating cooling systems, is effectively guaranteed requirement of the different parts to be cooled to chilling temperature, and the technical scheme of the application does not increase the volume of cooling system.
Description
Technical field
The invention belongs to automobile cooling system field, in particular to a kind of Two-way Cycle cooling system for including auxiliary pump
System.
Background technology
More and more harsh standard is promulgated in oil consumption of the national governments to engine, for example is provided in the year two thousand twenty requirement vehicle main frame
Factory persistently reduces oil consumption to 5.0L/100km；Fuel-economizing has become the development trend of world car, and most important in fuel-saving measures
A technology be exactly engine supercharging miniaturization+Technology of Hybrid Electric Vehicle.
In response to the regulation of local government, it is necessary to find a kind of Engine Matching system more innovated to complete this
Target.Because on the premise of dynamic property is not lost, want that decline 30% substantially one can not on the basis of at present oil consumption
Completing for task.Therefore propose that face using hybrid power system+electronics supercharging, is increased by weak mixed and engine on the engine
Pressure miniaturization, the requirement of reduction oil consumption is reached with this.Because whole system matches extremely complex, corresponding vehicle cooling system
System design also tends to complexity.
Conventional engines cooling system, when engine works, heat is except acting, heat radiation and biography caused by fuel oil burning
Lead and taken away outside through waste gas, its excess heat is both needed to be cooled down by cooling system.It is whole cold in conventional engines cooling system
But circulation is divided into two kinds, i.e. systemic circulation under partial circulating and thermostat opening under thermostat closed mode.Thermostat closes
Closed state, now engine, which is in, just starts working condition, and water temperature, which is not gone up also, to be come, and now thermostat is closed so that cooling
Water by radiator, is not advantageous to quickly improve water temperature, engine is reached optimum Working, as water temperature gradually rises,
Cured bag expanded by heating in thermostat, thermostat are gradually opened, and the loop for connecting radiator is opened, and then enters systemic circulation shape
State.
Under the systemic circulation state of conventional engines cooling system, an only major loop, with engines fuel-economizing technology
Constantly promote, the amount of parts integrated on engine gradually increases, such as charge air cooler, BSG, Electron pressurizing unit, and these are new
Integrated parts, need also exist for being cooled down, still, the chilling temperature, flow and control logic required for it are with starting
Machine gray iron is completely different；Therefore, traditional cooling control loop can not meet the application of new technology.
In addition, traditional mechanical thermostat response is slow, unlatching, closing determine by the water temperature of engine, are unfavorable for
The warming-up of engine and the quick cooling of water temperature.
Prior art is proposed, air-cooled technology is used to charge air cooler, BSG and Electron pressurizing unit, but air-cooled to space requirement
Height, the arrangement of whole enging cabin is had higher requirements, arrangement difficulty is big, and heat evil calculates complexity, and thermal balance risk is big, typically needs
It is iteratively improved and can be only achieved ideal effect, vehicle use environment is changeable in addition so that air cooling system is difficult to meet a variety of uses
The demand of each operating mode of environment.
Engine with supercharger pinking is currently the most intractable technical barrier of domestic and international automobile industry, one reason for this is that air inlet
Temperature is too high or unstable.At present, cold mode is better than cold mode in air-cooled in water cooling, but the water inlet of water cooling charge air cooler (cooling
Liquid) temperature can directly affect the intake air temperature of engine.The intake air temperature of engine generally requires control below 60 DEG C, otherwise
Combustion knock can be caused or cause ECU to turn round (measure of limitation moment of torsion) to the limit of transmitter, therefore the cooling of charge air cooler circulation is general
Low-temperature circulating can individually be arranged.And low-temperature circulating coolant temperature have to be lower than 55 DEG C, preferably lower than 50 DEG C, but it is actually a lot
Under operating mode, the inflow temperature of charge air cooler exceedes above-mentioned limit value (55 or 50 DEG C).One of reason for that is low-temperature circulating and height
Although temperature circulation has single radiator, an expansion tank is shared, causes the high temperature coolant in expansion tank to enter low
Temperature circulation, influences the inflow temperature of charge air cooler, and reason is：(1) coolant of entering of charge air cooler comes from middle cold heat sink and swollen
Swollen kettle, although the flow of expansion tank is smaller, cold heat sink temperature is general in the coolant temperature ratio in expansion tank
More than 50 DEG C are higher by, reaches as high as 100 DEG C；(2) water pump of low-temperature circulating is electronic water pump, and changed power is big, pace of change is fast,
Cause the moisturizing bypass flow of expansion tank extremely unstable, therefore the moisturizing of expansion tank is that charge air cooler inflow temperature is high and unstable
The main reason for determining.
As rapid starting/stopping engine, after engine is shut down, mechanical water pump is stopped, after can not meeting that engine is shut down
The heating demands of driver's cabin, especially this defect is especially prominent under temperature lower ground area, city operating mode, therefore traditional cold
But control loop can not meet the application of new technology.
The content of the invention
The purpose of the present invention be by proposing improved technology scheme to existing engine-cooling system, by the technical program,
Can preferably adapt to that coolant between different parts circulates flows to problem, solves charge air cooler, BSG, Electron pressurizing unit, turbine
The cooling problem of booster, oil cooler, and higher BSG radiating requirements when can solve the problem that low engine speeds and turbine
Delay chilling function after booster is shut down.
The present invention is achieved by the following technical solutions：
A kind of dual cycle cooling system for including auxiliary pump, it is cold to include high temperature circulation cooling system, low-temperature circulating
But system and delay circulating cooling system；
The high temperature circulation cooling system includes the first expansion tank, the second expansion tank, high temperature heat sink, engine
Cooling jacket, the first water pump, electronic thermostat, oil cooler, auxiliary pump and warm wind；
First expansion tank is connected with the first water inlet of first water pump；The delivery port of first water pump point
Water inlet not with the engine cooling water jacket and the oil cooler is connected；The delivery port difference of the oil cooler
Connect the water inlet of the high temperature heat sink and the auxiliary-valve of the electronic thermostat；The first of the engine cooling water jacket goes out
The mouth of a river connects the water inlet of the high temperature heat sink and the auxiliary-valve of the electronic thermostat；The of the engine cooling water jacket
Two delivery ports connect the water inlet of the auxiliary pump；The delivery port of the auxiliary pump connects the water inlet of the warm wind；Institute
The delivery port for stating warm wind is connected with the 3rd water inlet of first water pump；The delivery port of the high temperature heat sink and the electronics
The main valve connection of thermostat；The auxiliary-valve of the main valve of the electronic thermostat and the electronic thermostat is with described first
The second water inlet connection of water pump；
The low-temperature circulating cooling system, include second expansion tank, low-temperature radiator, the second water pump, electronics
Booster, turbocharger, charge air cooler and BSG；
Second expansion tank is connected with the water inlet of second water pump；The delivery port of second water pump with it is described
BSG water inlet connection；The delivery port of the BSG is connected with the water inlet of the Electron pressurizing unit；The Electron pressurizing unit
Delivery port is connected with the water inlet of the turbocharger；The delivery port of the delivery port of the turbocharger and the charge air cooler
Water inlet with the low-temperature radiator is connected；The delivery port of the low-temperature radiator water inlet with the charge air cooler respectively
And the water inlet connection of second water pump；
The delay circulating cooling system includes first expansion tank, the high temperature heat sink, the auxiliary water
Pump, the engine cooling water jacket, first water pump, the electronic thermostat, the oil cooler and the warm wind；
First expansion tank is connected with the first water inlet of first water pump；The delivery port of first water pump point
Water inlet not with the engine cooling water jacket and the oil cooler is connected；The delivery port of the oil cooler and institute
The water inlet for stating high temperature heat sink is connected with the first delivery port of the engine cooling water jacket；The engine cooling water jacket
The second delivery port connect the water inlet of the auxiliary pump；The water inlet of the delivery port of the auxiliary pump and the warm wind connects
Connect；The delivery port of the warm wind is connected with the 3rd water inlet of first water pump；The delivery port of the high temperature heat sink and institute
State the main valve connection of electronic thermostat；Second water inlet of the main valve of the electronic thermostat and first water pump connects
Connect；
First exhaust pipeline is connected between first expansion tank and the high temperature heat sink；It is swollen described first
Second exhaust pipeline is provided between swollen water tank and the engine cooling water jacket；In second expansion tank and the low temperature
Second exhaust pipeline is connected between radiator.
The first check valve and first throttle valve are provided with the first exhaust pipeline；On the second exhaust pipeline
It is provided with second throttle；The 3rd choke valve is provided with the 3rd gas exhaust piping.
The high temperature circulation cooling system includes systemic circulation cooling flowing path and partial circulating cooling flowing path；
The systemic circulation cooling flowing path includes first flow path, second flow path and the 3rd stream；
The first flow path is that coolant passes sequentially through first water pump, the engine cooling water jacket, the high temperature
First water pump is returned to by the second water inlet of first water pump after radiator, the electronic thermostat main valve；
The second flow path is that coolant passes sequentially through first water pump, the oil cooler, high temperature radiating
First water pump is returned to by the second water inlet of first water pump after device, the electronic thermostat main valve；
3rd stream is the second water outlet that coolant passes sequentially through first water pump, the engine cooling water jacket
First water pump is returned to by the 3rd water inlet of first water pump after mouth, the auxiliary pump and the warm wind；
The partial circulating cooling flowing path includes the 4th stream and the 5th stream；
4th stream is the first water outlet that coolant passes sequentially through first water pump, the engine cooling water jacket
Mouthful, first water pump is returned to by the second water inlet of first water pump after the auxiliary-valve of the electronic thermostat；
5th stream is that coolant passes sequentially through first water pump, the oil cooler and the electronics section temperature
First water pump is returned to by the second water inlet of first water pump after the auxiliary-valve of device.
The low-temperature circulating cooling system includes the 6th stream and the 7th stream；
6th stream be coolant from low-temperature radiator out after, returned by second water pump and the charge air cooler
Return the low-temperature radiator；
7th stream is that coolant passes sequentially through the second water pump, BSG, the Electron pressurizing unit, described
Second water pump is returned after turbocharger and the low-temperature radiator.
The engine cooling water jacket includes cylinder body water jacket and cylinder cover water jacket.
First water pump is switching regulator mechanical water pump；Second water pump is electronic water pump；The auxiliary pump is electricity
Control auxiliary pump.
The delay circulating cooling system includes the 8th stream, the 9th stream and the tenth stream；
8th stream is to enter the electronics section after coolant passes sequentially through the second water inlet of first water pump
After warm device main valve, into the delivery port of the high temperature heat sink, pass through institute after being come out from the water inlet of the high temperature heat sink
The first delivery port for stating engine cooling water jacket enters the engine cooling water jacket；Coolant is from the engine cooling water jacket
The second delivery port enter the auxiliary pump；By entering the warm wind after the auxiliary pump, pass through first water pump
The 3rd entrance return to first water pump；
9th stream is that the coolant enters water from first pump outlet into the oil cooler
Mouthful, enter engine cooling water jacket from the oil cooler delivery port by the first delivery port of engine cooling water jacket, from
The coolant that the delivery port of engine cooling water jacket second comes out is led to after passing sequentially through the auxiliary pump and the warm wind again
The 3rd water inlet for crossing first water pump returns to first water pump；
The tenth stream coolant passes sequentially through the second water outlet of first water pump, the engine cooling water jacket
The first water pump is returned to by the 3rd water inlet of first water pump after mouth, the auxiliary pump and the warm wind.
The beneficial effects of the invention are as follows：
1st, before the application auxiliary pump is connected on warm wind, the coolant temperature that cylinder cover water jacket is gone out is improved by auxiliary pump
The pressure difference and flow of warm wind, improve warm wind effect.
2nd, in low-temperature circulating cooling system, there is single low-temperature radiator, low-temperature circulating coolant temperature is kept
Below 50 DEG C, low-temperature radiator exhaust hose prevents higher cold of temperature in excessive expansion tank built with choke valve
But liquid is participated in low-temperature circulating cooling system.Turbocharger, Electron pressurizing unit and BSG series connection in low-temperature circulating cooling system
Be advantageous to the cooling of engine charge, and charge air cooler branch road is directly cooled down by low-temperature radiator, ensure that the steady of charge air cooler
It is qualitative；Engine Inlet Temperature and intake efficiency has been effectively ensured, has been advantageous to play engine power performance, prevents pinking.And
Electron pressurizing unit and turbocharger are arranged in low-temperature circulating cooling system, in the case of engine shutdown, can be passed through
Delay chilling is realized in the operation of second water pump.
3rd, the application prevents expansion tank or other streams in high temperature heat sink exhaust hose built with check valve and choke valve
Adverse current when road coolant pressure is higher, and prevent the high temperature coolant without radiator excessive in expansion tank from being flowed before water pump
Enter in-engine coolant circulation, the strong thermal balance for protecting engine of this device.
4th, two expansion tanks of the use of the application, low-temperature circulating blast pipe and high temperature circulation blast pipe respectively from it is different
Expansion tank connects, and effectively prevent when sharing expansion tank with high temperature circulation, the high temperature coolant in expansion tank passes through
Compensation water lines before electronic water pump enter charge air cooler, and instability of flow, influence the stability of the inflow temperature of charge air cooler, together
When influence engine inflow temperature and intake air temperature stability.
5th, in the application, after engine is shut down, electronic water pump is stopped in mechanical water pump and low-temperature circulating, automatically controlled auxiliary
Electronic water pump is started working, and electronic thermostat is opened by ECU control electrically heated rod heating wax bags, main valve, and auxiliary-valve is closed, cylinder
Body cylinder cover water jacket, high temperature heat sink, in oil cooler the higher coolant of temperature pumped out by automatically controlled auxiliary electron water pump it is follow-up
It is continuous that Electron pressurizing unit, turbocharger are cooled down, heater is flowed through afterwards, and driver's cabin is continued to heat, meets turbine
The demand of booster delay chilling, while continue to support warm wind heating system after engine shutdown, improve the usability of vehicle
Energy.
Brief description of the drawings
Fig. 1 is conventional engines cooling system frame diagram；
Fig. 2 is high temperature circulation cooling system frame diagram of the present invention；
Fig. 3 is low-temperature circulating cooling system frame diagram of the present invention.
Description of reference numerals
1 dotted line, 2 dotted lines, 3 dotted lines, 4 dotted lines, 5 solid lines, 6 solid lines, 7 arrows, 8 dotted lines, 001 first expansion tank, 002 electricity
Sub- thermostat, 003 first water pump, 004 cylinder body water jacket, 005 cylinder cover water jacket, 006 oil cooler, 007 high temperature heat sink, 008
Electron pressurizing unit, 009 warm wind, 010 electronic water pump, 011 second expansion tank, 012 low-temperature radiator, 013BSG, 014 turbine increase
Depressor, 015 charge air cooler, 016 first check valve, 017 first throttle valve, 018 second throttle, 019 the 3rd choke valve, 020 is auxiliary
Help water pump.
Embodiment
Describe technical scheme in detail by the following examples, following embodiment be only it is exemplary, only
Explanation and illustration technical scheme can be used for, and be not to be construed as the limitation to technical solution of the present invention.
Critical component defines
BSG：A kind of (Belt Starter Generator) belt start generator system：Engine can be achieved rise/to stop
Function, realizes energy regenerating, and auxiliary increases the functions such as torsion.
Electron pressurizing unit：(Electric Super-Charger ESC) one kind can improve car engine ignition and combustion
The electronic match product of burning state, main function be improve engine low side moment of torsion and moment of torsion response, can
The rotating speed of motor is dragged to 70000 turns, it is necessary to air cools down to motor in the range of 0.25S, is integrated in air cleaner
Portion.
Electronic water pump：A kind of motor-driven water pump, directly its rotating speed is controlled by control unit of engine, it is not
Influenceed, can flexibly be worked according to the actual cooling requirement of engine by engine speed.
High temperature heat sink：High temperature heat sink is a part for automobile cooling system, mainly by intake chamber, water-supplying chamber, main leaf
And the part such as radiator centre assembly, main function are to cool down the high temperature coolant in engine water jacket, belong to High-temperature cooling and follow
Ring.
Low-temperature radiator：Low-temperature radiator is a part for automobile cooling system, mainly by intake chamber, water-supplying chamber, main leaf
And the part such as radiator centre assembly, main function are to cool down engine intercooler, BSG, ESC, the cooling in turbocharger
Liquid, belong to sub-cooled circulation.
Expansion tank：A kind of part of automobile cooling system, main function are the spaces that an expansion is provided to coolant,
The coolant of timely replenishment system missing, and the air to be stagnated in cooling system is removed, this patent is expanded using closed-loop control type
Water tank, the coolant in kettle also assist in vehicle cooling water circulation, in addition, expansion tank also act as to heat radiator assembly, in it is cold
The scavenging action of heat radiator assembly and engine.
Turbocharger：A kind of air compressor, air inflow is increased by compressed air, utilize the useless of engine discharge
Gas inertia impulsive force promotes the turbine in turbine room, and turbine drives coaxial impeller again, impeller force feed is sent by air filter pipeline
Air be allowed to supercharging and enter cylinder, main function is the power output of increase engine.
Charge air cooler：The auxiliary equipment of engine turbine supercharging, its role is to reduce Engine Inlet Temperature, improve engine
Intake efficiency, and prevent pinking, be the important combiner of engine supercharging system.
Electronic thermostat：The relatively conventional thermostat of electronic thermostat adds electric heating function, thermostatic valve open strip
Part is more flexible, and control unit collection sensor signal draws calculated value according to the program of setting, and electronic thermostat temperature is adjusted
Save unit and load corresponding voltage, main valve is opened by the way of electrical heating wax bag.Can be more accurate relative to traditional thermostat
Control the various operating modes of engine under cooling system enter radiator coolant rate, change water circulation scope.
Oil cooler：A kind of full name oil cooler, cold air (but) device of engine (lubricating oil), is divided into air-cooled and water
Cold type.Water-cooling engine oil cooler controls the temperature of lubricating oil using coolant temperature, when lubricating oil temperature is high, by cooling
Liquid reduces temperature；During engine start, then heat is absorbed from cooling water makes lubricating oil temperature be lifted rapidly.
As shown in Figure 2 to Figure 3, the present invention provides a kind of dual cycle cooling system for including double expansion tanks and improves knot
Structure, include high temperature circulation cooling system, low-temperature circulating cooling system and delay circulating cooling system；In this application, high temperature
Circulating cooling system and low-temperature circulating cooling system use respective expansion tank to be used as water replanishing device before exhaust and pump respectively, this
Sample can avoid the interference between binary cycle system completely.
In the accompanying drawing of the present embodiment, what dotted line 1 represented is the partial circulating loop under electronic thermostat closed mode；Dotted line
2 expressions are first exhaust pipelines；What dotted line 3 represented is the road of second exhaust；Dotted line 4 is water pipe；Dotted line 8 is the 3rd row
Air pipe；Solid line 5 is the systemic circulation loop under electronic thermostat opening；Solid line 6 is low-temperature circulating cooling system stream；Arrow
It is first 7 represent for postpone the circulatory system.
High temperature circulation cooling system, engine work, heat caused by fuel oil burning is except acting, heat radiation, conduction warp
Outside waste gas is taken away, remaining is cooled down by cooling system.Whole high temperature circulation cooling system is divided into two states：Electronics section
Warm device closed mode (main valve door closure state) and electronic thermostat opening (main valve opening).
The high temperature circulation cooling system includes the first expansion tank 001, high temperature heat sink 007, engine cooling water
Set, the first water pump 003, electronic thermostat 002, oil cooler 006, auxiliary pump 020, auxiliary pump 020 and warm wind 009.
In this application, under usual high temperature circulation cooling system state (such as when non-winter), the not work of auxiliary pump 020
Make, the auxiliary pump only plays a part of connecting water channel, in the winter time, particularly in the low area of outdoor environment, it is necessary to which warm wind is big
Work is measured, now regular circulation may meet the temperature of in-car, can improve internal circulating load by opening auxiliary pump.Not
Under the season or the environment that need warm wind, warm wind can be closed as needed, and coolant connects the first water by warm wind bypass line
3rd water inlet of pump.In the present embodiment, engine cooling water jacket includes cylinder body water jacket 004 and cylinder cover water jacket 005, at this
In application, the structure of cylinder body water jacket and the structure of cylinder cover water jacket are as coolant not this application claims in the range of
Pass sequentially through cylinder body water jacket and cylinder cover water jacket and coolant is respectively supplied to cylinder body water jacket and cylinder cover water jacket and does not influence the application
Protection domain, be that requirement engine will have cooling jacket this application claims in the range of, that is, need coolant to cool down,
Rather than using air cooling.
First expansion tank is connected with the first water inlet of first water pump；The delivery port of first water pump point
Water inlet not with the engine cooling water jacket and the oil cooler is connected；The delivery port difference of the oil cooler
Connect the water inlet of the high temperature heat sink and the auxiliary-valve of the electronic thermostat；The first of the engine cooling water jacket goes out
The mouth of a river connects the water inlet of the high temperature heat sink and the auxiliary-valve of the electronic thermostat；The of the engine cooling water jacket
Two delivery ports connect the water inlet of the auxiliary pump；The delivery port of the auxiliary pump connects the water inlet of the warm wind；Institute
The delivery port for stating warm wind is connected with the 3rd water inlet of first water pump；The delivery port of the high temperature heat sink and the electronics
The main valve connection of thermostat；The auxiliary-valve of the main valve of the electronic thermostat and the electronic thermostat is with described first
The second water inlet connection of water pump.
In present embodiments, the first water inlet of the first water pump, the second water inlet and first of the first water pump
3rd water inlet of water pump can collect for a water inlet as needed.First delivery port of engine cooling water jacket and start
Second delivery port of machine cooling jacket can collect for a delivery port as needed.
The high temperature circulation cooling system includes the high temperature circulation cooling system during electronic thermostat closed mode
(partial circulating cooling flowing path), and the high temperature circulation cooling system (systemic circulation cooling flowing path) during electronic thermostat opening,
Also high temperature circulation cooling system (partial circulating cooling flowing path and the systemic circulation cooling stream during the semi-open state of electronic thermostat are included
Road coexist under cooling flowing path).
Electronic thermostat closed mode：
Now engine, which is in, just starts working condition, and water temperature, which is not gone up also, to be come, and now, electronic thermostat, which receives, to be started
Machine ECU signals, determine that open and close, engine are born according to engine water outlet coolant temperature and the load condition of engine
Lotus is low, and electronic thermostat remains turned-off, and engine is in partial circulating state, rapid warming-up, advantageously reduces cold start-up oil consumption.
High temperature circulation cooling system during electronic thermostat closed mode include complete partial circulating loop (the 4th stream and
5th stream) and warm wind loop (the 3rd stream).
4th stream is the first water outlet that coolant passes sequentially through first water pump, the engine cooling water jacket
Mouthful, first water pump is returned to by the second water inlet of first water pump after the auxiliary-valve of the electronic thermostat.
5th stream is that coolant passes sequentially through first water pump, the oil cooler and the electronics section temperature
First water pump is returned to by the second water inlet of first water pump after the auxiliary-valve of device.
And can determine to open warm wind loop, i.e. the 3rd stream as needed, the 3rd stream be coolant successively
By passing through institute after first water pump, the second delivery port of the engine cooling water jacket, the auxiliary pump, the warm wind
The 3rd water inlet for stating the first water pump returns to first water pump.
In this application, the unlatching of electronic thermostat is controlled by coolant temperature, in the present embodiment, low negative in engine
During lotus, the opening temperature of electronic thermostat is set as 97 degrees Celsius, 112 degrees Celsius of standard-sized sheet temperature；During high engine load operating mode,
The opening temperature of electronic thermostat is set as 85 degrees Celsius, 100 degrees Celsius of standard-sized sheet temperature；During engine middle-low load, entering
When the coolant temperature of electronic thermostat is less than opening temperature, high temperature circulation cooling system is run by partial circulating stream.At this
In the other embodiments of application, the opening temperature of electronic thermostat can be set as needed, have no effect on the protection of the application
Scope, for example the opening temperature of electronic thermostat is arranged at 90,93,95,100 degrees Celsius of grades.Equally, electronic thermostat
The full open temperature of main valve can also be set as other temperature, such as 105,108,115 degrees Celsius etc..
Above-mentioned 4th stream and the 5th stream are in-engine normal open loop.
In the present embodiment, when the coolant temperature for entering electronic thermostat is higher than 112 degrees Celsius, electronic thermostat
Main valve it is fully open, the auxiliary-valve Close All of electronic thermostat, now, the 4th stream and the 5th stream are closed.
The systemic circulation cooling flowing path of high temperature circulation cooling system during the electronic thermostat opening includes first
Stream, second flow path and the 3rd stream.
The first flow path is that coolant passes sequentially through first water pump, the engine cooling water jacket, the high temperature
First water pump is returned to by the second water inlet of first water pump after radiator, the electronic thermostat main valve.
The second flow path is that coolant passes sequentially through first water pump, the oil cooler, high temperature radiating
First water pump is returned to by the second water inlet of first water pump after device, the electronic thermostat main valve.
3rd stream is the second water outlet that coolant passes sequentially through first water pump, the engine cooling water jacket
First water pump is returned to by the 3rd water inlet of first water pump after mouth, the auxiliary pump and the warm wind.
In three streams, whether auxiliary pump or warm wind are opened and are determined by the temperature needs of in-car, when auxiliary pump or warm wind are being closed
When only play path effect.
Now, ECT is gradually increasing, water outlet of the coolant in engine cooling water jacket through engine
Mouth, which enters, participates in cooling in high temperature heat sink, as shown in Fig. 2 high temperature circulations.In addition, in water inlet of radiator Position Design
One gas exhaust piping, and the first check valve 016 and first throttle valve 017 are provided with first exhaust pipeline；In cylinder cover water jacket
Second exhaust pipeline is provided with 005, and second throttle 018 is set on second exhaust pipeline；Height can effectively be discharged
Caused gas in warm water road, avoid producing cavitation erosion problem, first exhaust pipeline and second exhaust pipeline in cooling circulating water road
Completed by the first expansion tank, the first expansion tank pressure cover is designed as 1.3Bar；Set in the first water pump water inlet locations
High temperature water pipe is counted, to the first water pump moisturizing, hypotony before the first water pump is avoided, produces cavitation.
In coolant temperature when between 97 degrees Celsius to 112 degrees Celsius, the auxiliary-valve of electronic thermostat is in opening state
While state, the main valve of electronic thermostat is also at opening, now, first flow path, second flow path, the 3rd stream,
Four streams and the 5th stream exist simultaneously.
The low-temperature circulating cooling system, as shown in figure 3, including second expansion tank 011, low-temperature radiator
012nd, the second water pump, turbocharger 014, charge air cooler 015, Electron pressurizing unit 008 and BSG013；In this application, the second water
Pump is electronic water pump 010.
Second expansion tank is connected with the water inlet of second water pump；The delivery port of second water pump with it is described
BSG water inlet connection；The delivery port of the BSG is connected with the water inlet of the Electron pressurizing unit；The Electron pressurizing unit
Delivery port is connected with the water inlet of the turbocharger；The delivery port of the delivery port of the turbocharger and the charge air cooler
Water inlet with the low-temperature radiator is connected；The delivery port of the low-temperature radiator water inlet with the charge air cooler respectively
And the water inlet connection of second water pump.
First exhaust pipeline is connected between first expansion tank and the high temperature heat sink；It is swollen described first
Second exhaust pipeline is provided between swollen water tank and the engine cooling water jacket；In second expansion tank and the low temperature
The 3rd gas exhaust piping is connected between radiator.
The first check valve 016 and first throttle valve 017 are provided with the first exhaust pipeline；In the second exhaust
Second throttle 018 is provided with pipeline；The 3rd choke valve 019 is provided with the 3rd gas exhaust piping.
The low-temperature circulating cooling system includes the 6th stream and the 7th stream.
6th stream be coolant from low-temperature radiator out after, returned by second water pump and the charge air cooler
Return the low-temperature radiator.
7th stream is that coolant passes sequentially through the second water pump, BSG, the Electron pressurizing unit, described
Second water pump is returned after turbocharger and the low-temperature radiator.
Low-temperature circulating cooling system is used for the cooling to BSG, turbocharger, Electron pressurizing unit and charge air cooler, and low temperature dissipates
Coolant flows separately through BSG, Electron pressurizing unit and turbocharger in hot device after being suctioned out by electronic water pump, cold after temperature rise
But liquid enters low-temperature radiator.Meanwhile the coolant come out from low-temperature radiator is directly entered charge air cooler and charge air cooler is cooled down, and protects
The cooling effect of charge air cooler is demonstrate,proved.In addition, the coolant in the second expansion tank is sucked by the water pipe before electronic water pump
Electronic water pump, hypotony produces cavitation erosion before preventing electronic water pump, meanwhile, mix the cold of bubble in low-temperature radiator upper water box
But liquid is because the pressure differential of the second expansion tank and low-temperature radiator upper water box passes through the 3rd choke valve on the 3rd gas exhaust piping
Into the second expansion tank.
Low-temperature circulating cooling system has single low-temperature radiator, meet charge air cooler inflow temperature control 50 degrees Celsius with
Under cooling requirement；The electronic water pump of low-temperature circulating coolant power resources ECU controls, meets low engine speeds, high load capacity
Or engine radiating requirements of BSG and charge air cooler when carrying out thermal starting by BSG front ends belt.
The high temperature circulation cooling system of the present invention is run alone with low-temperature circulating cooling system, and both do not intervene mutually.
In this application, also include the delay circulatory system, to after engine stop works to the confession in driver's cabin
It is warm.In this application, the delay circulatory system includes the first expansion tank 001, high temperature heat sink 007, auxiliary pump
020th, engine cooling water jacket, the first water pump 003, electronic thermostat 002, oil cooler 006 and warm wind 009；In the application
In, under engine behavior, the first pump working, auxiliary pump is off working state, only plays path effect.In this Shen
Please in, in the case where postponing circulatory system state, the first water pump is off working state, only plays path effect.The circulation of coolant is led to
Auxiliary pump is crossed to realize, in this application, auxiliary pump is electron assistant water pump.The delay circulating cooling system master of the application
The purpose to be played is that in-car is heated.
First expansion tank is connected with the first water inlet of first water pump；The delivery port of first water pump point
Water inlet not with the engine cooling water jacket and the oil cooler is connected；The delivery port of the oil cooler and institute
The water inlet for stating high temperature heat sink is connected with the first delivery port of the engine cooling water jacket；The engine cooling water jacket
The second delivery port connect the water inlet of the auxiliary pump；The water inlet of the delivery port of the auxiliary pump and the warm wind connects
Connect；The delivery port of the warm wind is connected with the 3rd water inlet of first water pump；The delivery port of the high temperature heat sink and institute
State the main valve connection of electronic thermostat；Second water inlet of the main valve of the electronic thermostat and first water pump connects
Connect.
The delay circulating cooling system includes the 8th stream, the 9th stream and the tenth stream；
8th stream is to enter the electronics section after coolant passes sequentially through the second water inlet of first water pump
After warm device main valve, into the delivery port of the high temperature heat sink, pass through institute after being come out from the water inlet of the high temperature heat sink
The first delivery port for stating engine cooling water jacket enters the engine cooling water jacket；Coolant is from the engine cooling water jacket
The second delivery port enter the auxiliary pump；By entering the warm wind after the auxiliary pump, pass through first water pump
The 3rd entrance return to first water pump；
9th stream is that the coolant enters water from first pump outlet into the oil cooler
Mouthful, enter engine cooling water jacket from the oil cooler delivery port by the first delivery port of engine cooling water jacket, from
The coolant that the delivery port of engine cooling water jacket second comes out is led to after passing sequentially through the auxiliary pump and the warm wind again
The 3rd water inlet for crossing first water pump returns to first water pump；
The tenth stream coolant passes sequentially through the second water outlet of first water pump, the engine cooling water jacket
The first water pump is returned to by the 3rd water inlet of first water pump after mouth, the auxiliary pump and the warm wind.
Under the delay circulating cooling system state of the application, the opening and closing of warm wind determine as needed.
Described above is only the description of the preferred embodiment of the present invention, it is noted that due to the finiteness of literal expression,
And unlimited concrete structure objectively be present, for those skilled in the art, do not departing from the present invention
On the premise of principle, some improvements and modifications can also be made, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (7)
- A kind of 1. dual cycle cooling system for including auxiliary pump, it is characterised in that：Include high temperature circulation cooling system, low Warm circulating cooling system and delay circulating cooling system；The high temperature circulation cooling system includes the first expansion tank, high temperature heat sink, engine cooling water jacket, the first water Pump, electronic thermostat, oil cooler, auxiliary pump and warm wind；First expansion tank is connected with the first water inlet of first water pump；The delivery port of first water pump respectively with The engine cooling water jacket and the connection of the water inlet of the oil cooler；The delivery port of the oil cooler connects respectively The auxiliary-valve of the water inlet of the high temperature heat sink and the electronic thermostat；First delivery port of the engine cooling water jacket Connect the water inlet of the high temperature heat sink and the auxiliary-valve of the electronic thermostat；The second of the engine cooling water jacket goes out The mouth of a river connects the water inlet of the auxiliary pump；The delivery port of the auxiliary pump connects the water inlet of the warm wind；It is described warm The delivery port of wind is connected with the 3rd water inlet of first water pump；The delivery port of the high temperature heat sink and the electronics section temperature The main valve connection of device；The auxiliary-valve of the main valve of the electronic thermostat and the electronic thermostat with first water pump The second water inlet connection；The low-temperature circulating cooling system, include second expansion tank, low-temperature radiator, the second water pump, electronics supercharging Device, turbocharger, charge air cooler and BSG；Second expansion tank is connected with the water inlet of second water pump；The delivery port of second water pump and the BSG Water inlet connection；The delivery port of the BSG is connected with the water inlet of the Electron pressurizing unit；The water outlet of the Electron pressurizing unit Mouth is connected with the water inlet of the turbocharger；The delivery port of the delivery port of the turbocharger and the charge air cooler with The water inlet connection of the low-temperature radiator；The delivery port of the low-temperature radiator is connected with the water inlet of second water pump；The delay circulating cooling system includes first expansion tank, the high temperature heat sink, the auxiliary pump, institute State engine cooling water jacket, first water pump, the electronic thermostat, the oil cooler and the warm wind；First exhaust pipeline is connected between first expansion tank and the high temperature heat sink；In first swelling water Second exhaust pipeline is provided between case and the engine cooling water jacket；In second expansion tank and the low temperature radiation The 3rd gas exhaust piping is connected between device.
- 2. the dual cycle cooling system according to claim 1 for including auxiliary pump, it is characterised in that：Described first The first check valve and first throttle valve are provided with gas exhaust piping；Second throttle is provided with the second exhaust pipeline； The 3rd choke valve is provided with the 3rd gas exhaust piping.
- 3. the dual cycle cooling system according to claim 1 for including auxiliary pump, it is characterised in that：The high temperature follows Ring cooling system includes systemic circulation cooling flowing path and partial circulating cooling flowing path；The systemic circulation cooling flowing path includes first flow path, second flow path and the 3rd stream；The first flow path is that coolant passes sequentially through first water pump, the engine cooling water jacket, high temperature radiating First water pump is returned to by the second water inlet of first water pump after device, the electronic thermostat main valve；The second flow path passes sequentially through first water pump, the oil cooler, the high temperature heat sink, institute for coolant State and first water pump is returned to by the second water inlet of first water pump after electronic thermostat main valve；3rd stream be coolant pass sequentially through first water pump, the engine cooling water jacket the second delivery port, First water pump is returned to by the 3rd water inlet of first water pump after the auxiliary pump and the warm wind；The partial circulating cooling flowing path includes the 4th stream and the 5th stream；4th stream be coolant pass sequentially through first water pump, the engine cooling water jacket the first delivery port, First water pump is returned to by the second water inlet of first water pump after the auxiliary-valve of the electronic thermostat；5th stream is that coolant passes sequentially through first water pump, the oil cooler and the electronic thermostat First water pump is returned to by the second water inlet of first water pump after auxiliary-valve.
- 4. the dual cycle cooling system according to claim 1 for including auxiliary pump, it is characterised in that：The low temperature follows Ring cooling system includes the 6th stream and the 7th stream；6th stream for coolant from low-temperature radiator out after, pass through second water pump and the charge air cooler and return to institute State low-temperature radiator；7th stream is that coolant passes sequentially through second water pump, the BSG, the Electron pressurizing unit, the turbine Second water pump is returned after booster and the low-temperature radiator.
- 5. the dual cycle cooling system for including auxiliary pump according to claim 1 or 3, it is characterised in that：The hair Motivation cooling jacket includes cylinder body water jacket and cylinder cover water jacket.
- 6. the dual cycle cooling system according to claim 1 for including auxiliary pump, it is characterised in that：First water Pump is switching regulator mechanical water pump；Second water pump is electronic water pump；The auxiliary pump is automatically controlled auxiliary pump.
- 7. the dual cycle cooling system according to claim 1 for including auxiliary pump, it is characterised in that：The delay follows Ring cooling system includes the 8th stream, the 9th stream and the tenth stream；8th stream is to enter the electronic thermostat after coolant passes sequentially through the second water inlet of first water pump After main valve, into the delivery port of the high temperature heat sink, pass through the hair after being come out from the water inlet of the high temperature heat sink First delivery port of motivation cooling jacket enters the engine cooling water jacket；Coolant from the engine cooling water jacket Two delivery ports enter the auxiliary pump；By entering the warm wind after the auxiliary pump, pass through the of first water pump Three entrances return to first water pump；9th stream is the water inlet that the coolant enters the oil cooler from first pump outlet, from The oil cooler delivery port enters engine cooling water jacket by the first delivery port of engine cooling water jacket, from the hair The coolant that the delivery port of motivation cooling jacket second comes out passes sequentially through after the auxiliary pump and the warm wind by described again 3rd water inlet of the first water pump returns to first water pump；The tenth stream coolant passes sequentially through first water pump, the second delivery port of the engine cooling water jacket, institute State and the first water pump is returned to by the 3rd water inlet of first water pump after auxiliary pump and the warm wind.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510680757.4A CN105201618B (en) | 2015-10-16 | 2015-10-16 | A kind of dual cycle cooling system for including auxiliary pump |
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| CN201510680757.4A CN105201618B (en) | 2015-10-16 | 2015-10-16 | A kind of dual cycle cooling system for including auxiliary pump |
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| CN105201618A CN105201618A (en) | 2015-12-30 |
| CN105201618B true CN105201618B (en) | 2018-02-13 |
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| CN105937433A (en) * | 2016-04-27 | 2016-09-14 | 安徽江淮汽车股份有限公司 | Engine cooling system comprising auxiliary water pump |
| CN105927356A (en) * | 2016-04-27 | 2016-09-07 | 安徽江淮汽车股份有限公司 | Multi-cycle engine cooling system |
| CN114312868A (en) * | 2022-02-08 | 2022-04-12 | 湖南联诚轨道装备有限公司 | Redundant cooling tower for rail transit vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101463752B (en) * | 2008-12-11 | 2010-06-02 | 奇瑞汽车股份有限公司 | Cooling system of engine |
| CN102486114B (en) * | 2010-12-31 | 2013-09-25 | 上汽通用五菱汽车股份有限公司 | Cooling system for automobile engine |
| JP6007128B2 (en) * | 2013-02-27 | 2016-10-12 | カルソニックカンセイ株式会社 | Exhaust recirculation system cooling system |
| CN103615302B (en) * | 2013-12-05 | 2015-09-09 | 安徽江淮汽车股份有限公司 | A kind of cooling system of motor |
| CN104500204A (en) * | 2014-12-10 | 2015-04-08 | 重庆小康工业集团股份有限公司 | Automobile engine cooling device |
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Address after: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Applicant after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Applicant before: Anhui Jianghuai Automotive Co., Ltd. |
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