CN105257387B - A kind of engine dual cycle cooling system - Google Patents
A kind of engine dual cycle cooling system Download PDFInfo
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- CN105257387B CN105257387B CN201510681032.7A CN201510681032A CN105257387B CN 105257387 B CN105257387 B CN 105257387B CN 201510681032 A CN201510681032 A CN 201510681032A CN 105257387 B CN105257387 B CN 105257387B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses
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Abstract
The present invention relates to a kind of engine dual cycle cooling system, include 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, machine oil cooler, Electron pressurizing unit, turbocharger and warm wind；The low-temperature circulating cooling system, includes the second expansion tank, low-temperature radiator, the second water pump, charge air cooler and BSG.The application is respectively provided with high temperature heat sink and low-temperature radiator by setting three 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, a kind of engine dual cycle cooling system is specifically referred to.
Background technology
More and more harsh standard is promulgated in oil consumption of the national governments to engine, such as 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, wanting 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, the heat that fuel oil burning is produced is except acting, heat radiation and biography
Lead and taken away outside through waste gas, remaining 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 the systemic circulation under partial circulating and thermostat opening under two kinds, i.e. thermostat closed mode.Thermostat is closed
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 is conducive to quickly improving water temperature, engine is reached optimum Working not by radiator, as water temperature gradually rises,
Cured bag expanded by heating in thermostat, thermostat is gradually opened, and the loop of connection radiator is opened, and then enters systemic circulation shape
State.
Under the systemic circulation state of conventional engines cooling system, only one major loop, with engines fuel-economizing technology
Constantly promote, integrated amount of parts gradually increases on engine, such as charge air cooler, BSG, Electron pressurizing unit, these are newly
Integrated parts, need also exist for being cooled down, still, and 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, opens, closing is determined by the water temperature of engine, be 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 to whole enging cabin has higher requirements, and arrangement difficulty is big, and heat evil calculates complicated, 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 use
The demand of each operating mode of environment.
Engine with supercharger pinking is currently domestic and international automobile industry most intractable technical barrier, 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, but cold heat sink temperature is general in coolant temperature ratio in expansion tank
More than 50 DEG C are higher by, 100 DEG C are reached as high as；(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
Fixed main cause.
As rapid starting/stopping engine, after engine is shut down, mechanical water pump is stopped, it is impossible to meet after engine shutdown
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 existing engine-cooling system propose improved technology scheme, 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 radiating requirements higher BSG 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 engine dual cycle cooling system, includes high temperature circulation cooling system and low-temperature circulating cooling system, institute
Stating high temperature circulation cooling system includes delay circulating cooling system；
The high temperature circulation cooling system includes the first expansion tank, high temperature heat sink, engine cooling water jacket, first
Water pump, electronic thermostat, oil cooler, Electron pressurizing unit, turbocharger 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 Electron pressurizing unit by auxiliary pump；The delivery port of the Electron pressurizing unit and the whirlpool
Take turns the water inlet connection of booster；The delivery port of the turbocharger is connected with the water inlet of the warm wind；The warm wind
Delivery port is connected with the 3rd water inlet of first water pump；The delivery port of the high temperature heat sink and the electronic thermostat
Main valve is connected；The auxiliary-valve of the main valve of the electronic thermostat and the electronic thermostat with first water pump
Two water inlets are connected；
The low-temperature circulating cooling system, include the second expansion tank, low-temperature radiator, the second water pump, 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
The water inlet connection of charge air cooler；The delivery port of the charge air cooler is connected with the water inlet of the BSG；The delivery port of the BSG 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；
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 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 delay circulatory system includes the first expansion tank, high temperature heat sink, auxiliary pump, engine cooling water
Set, the first water pump, electronic thermostat, oil cooler, Electron pressurizing unit, turbocharger 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 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 delivery port of the auxiliary pump enters with the Electron pressurizing unit
The mouth of a river is connected；The delivery port of the Electron pressurizing unit is connected with the water inlet of the turbocharger；The turbocharger
Delivery port is connected with the water inlet of the warm wind；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 is connected with the main valve of the electronic thermostat；The main valve of the electronic thermostat and institute
State the second water inlet connection of the first water pump.
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 and second flow path；
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；
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
First water pump is returned to by the second water inlet of first water pump after mouth, 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 high temperature circulation cooling system also includes the 3rd stream；3rd stream is described in coolant is passed sequentially through
First water pump, the second delivery port of the engine cooling water jacket, the auxiliary pump, the Electron pressurizing unit, the turbine
First water pump is returned to by the 3rd water inlet of first water pump after booster, the warm wind.
The low-temperature circulating cooling system includes the 6th stream；
6th stream is that coolant passes sequentially through second water pump, the charge air cooler, the BSG and the low temperature
Second water pump is returned after 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.
First check valve and the first throttle valve arranged in series；It is swollen that first check valve is arranged at described first
Between swollen water tank and the first throttle valve.
The delay circulating cooling system includes the 7th stream, the 8th stream and the 9th stream；
7th 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, from the water inlet of the high temperature heat sink come out after by institute
The first delivery port for stating engine cooling water jacket enters the engine cooling water jacket；Coolant is cold by the engine cylinder-body
But water jacket, Cooling of Cylinder Head water jacket enter the auxiliary pump from the second delivery port of the engine cooling water jacket；By described
Sequentially entered after auxiliary pump after the Electron pressurizing unit, the turbocharger and the warm wind by first water pump
3rd entrance returns to first water pump；
8th 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 passes sequentially through the auxiliary pump, electronics supercharging again
First water pump is returned to by the 3rd water inlet of first water pump after device, the turbocharger and the warm wind；
The 9th stream coolant passes sequentially through the second water outlet of first water pump, the engine cooling water jacket
Pass through the of first water pump after mouth, the auxiliary pump, the Electron pressurizing unit, the turbocharger and the warm wind
Three water inlets return to the first water pump.
The beneficial effects of the invention are as follows：
1st, the application Electron pressurizing unit and turbocharger are connected on before warm wind, and the coolant temperature that cylinder cover water jacket is gone out is complete
The coolant temperature requirement of full up sufficient Electron pressurizing unit and turbocharger, while also improving the cooling liquid temperature into warm wind
Degree, improves warm wind effect.
2nd, in low-temperature circulating cooling system, there are single low-temperature radiator and expansion tank, make low-temperature circulating coolant
Temperature is held in less than 50 DEG C, and low-temperature radiator exhaust hose prevents the middle temperature of excessive expansion tank built with choke valve
The higher coolant of degree is participated in low-temperature circulating cooling system.BSG and charge air cooler series arm in low-temperature circulating cooling system
Be conducive to the cooling of engine charge, Engine Inlet Temperature and intake efficiency has been effectively ensured, be conducive to performance to start motor-driven
Power, prevents pinking.
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 thermal balance for protecting engine of this device effectively.
4th, the application by two expansion tanks, low-temperature circulating blast pipe and high temperature circulation blast pipe respectively enter respective
Expansion tank, prevents high temperature circulation blast pipe hypertonia from influenceing the exhaust of low-temperature radiator.
5th, in this application, it is with single low-temperature radiator and small-sized swelling water by low temperature (cooling) cyclic design
Kettle, effectively prevent when sharing expansion tank with high temperature circulation, before the high temperature coolant in expansion tank is by electronic water pump
Compensation water lines enter charge air cooler, and instability of flow, the stability of the inflow temperature of charge air cooler is influenceed, while influence is started
The intake air temperature of machine and the stability of inflow temperature.
6th, 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, turbine is met
The demand of booster delay chilling, while engine continues to support warm wind heating system after shutting down, improves 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；
Fig. 4 is present invention delay circulating cooling system frame diagram.
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 increases
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 is defined
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 is cooled 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, is directly controlled, it is not by control unit of engine to its rotating speed
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 assembly such as radiator centre, main function is to cool down the high temperature coolant in engine water jacket, belongs to High-temperature cooling and follows
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 assembly such as radiator centre, main function is to cool down engine intercooler, BSG, ESC, the cooling in turbocharger
Liquid, belongs to sub-cooled circulation.
Expansion tank：A kind of part of automobile cooling system, main function is the space that an expansion is provided to coolant,
The coolant of timely replenishment system missing, and the air stagnated in cooling system is removed, this patent is expanded using closed-loop control type
Coolant in water tank, kettle also assists 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, utilizes giving up that engine is discharged
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 to increase the power output of engine.
Charge air cooler：The auxiliary equipment of engine turbine supercharging, its role is to reduce Engine Inlet Temperature, improves 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 smart relative to traditional thermostat
Cooling system enters the coolant rate of radiator under the accurate control various operating modes of engine, changes 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 Figures 2 to 4, the present invention provides a kind of engine dual cycle cooling system, includes high temperature circulation cooling
System and low-temperature circulating cooling system, high temperature circulation cooling system include delay circulating cooling system；In this application, high temperature is followed
Ring cooling system and low-temperature circulating cooling system use respectively respective expansion tank as be vented and pump before water replanishing device, so
The interference between binary cycle system can be avoided completely.
In the accompanying drawing of the present embodiment, what dotted line 1 was represented is the partial circulating loop under electronic thermostat closed mode；Dotted line
2 expressions are first exhaust pipelines；What dotted line 3 was 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 delay the circulatory system.
High temperature circulation cooling system, engine work, the heat that fuel oil burning is produced 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, machine oil cooler 006, auxiliary pump 020, the turbocharger of Electron pressurizing unit 008
014 and warm wind 009.In this application, under high temperature circulation cooling system state, auxiliary pump 020 does not work, the auxiliary pump
Only play a part of connecting water channel.In the present embodiment, engine cooling water jacket includes cylinder body water jacket 004 and cylinder cover water jacket
005, in this application, the structure of cylinder body water jacket and the structure of cylinder cover water jacket not this application claims in the range of, as
Coolant is to 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 not shadow
The protection domain of the application is rung, is that requirement engine there will be cooling jacket this application claims in the range of, that is, needs cooling
Liquid is cooled down, rather than using air-cooled.
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 Electron pressurizing unit by auxiliary pump；The delivery port of the Electron pressurizing unit and the whirlpool
Take turns the water inlet connection of booster；The delivery port of the turbocharger is connected with the water inlet of the warm wind；The warm wind
Delivery port is connected with the 3rd water inlet of first water pump；The delivery port of the high temperature heat sink and the electronic thermostat
Main valve is connected；The auxiliary-valve of the main valve of the electronic thermostat and the electronic thermostat with first water pump
Two water inlets are connected.
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, now, and electronic thermostat, which is received, 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 is remained turned-off, and engine is in partial circulating state, and 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
First water pump is returned to by the second water inlet of first water pump after mouth, 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 first water pump, the second delivery port of the engine cooling water jacket, the auxiliary pump, the Electron pressurizing unit,
First water pump is returned to by the 3rd water inlet of first water pump after the turbocharger, the warm wind.
In this application, the unlatching of electronic thermostat is in the present embodiment, low negative in engine by coolant temperature control
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, such as be arranged at 90,93,95,100 degrees Celsius of grades by the opening temperature of electronic thermostat.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 and second flow path.
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.
In systemic circulation stream, and it can determine to open warm wind loop, i.e. the 3rd stream, the 3rd stream as needed
Road passes sequentially through first water pump, the second delivery port of the engine cooling water jacket, the auxiliary pump, institute for coolant
State after Electron pressurizing unit, the turbocharger, the warm wind and to return to described the by the 3rd water inlet of first water pump
One water pump.
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 it is provided with first exhaust pipeline the first check valve 016 and first throttle valve 017；In cylinder cover water jacket
Second exhaust pipeline, and the setting second throttle 018 on second exhaust pipeline are provided with 005；Height can effectively be discharged
The gas produced in warm water road, it is to avoid cavitation erosion problem, first exhaust pipeline and second exhaust pipeline are produced 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, it is to avoid hypotony before the first water pump, cavitation is produced.
In coolant temperature when between 97 degrees Celsius to 112 degrees Celsius, the auxiliary-valve of electronic thermostat, which is in, opens shape
While state, the main valve of electronic thermostat is also at opening, now, first flow path, second flow path, the 4th stream and
Five streams 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, charge air cooler 015, 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
The water inlet connection of charge air cooler；The delivery port of the charge air cooler is connected with the water inlet of the BSG；The delivery port of the BSG 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.
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 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.
6th stream is that coolant passes sequentially through second water pump, the charge air cooler, the BSG and the low temperature
Second water pump is returned after radiator.
Low-temperature circulating cooling system is used in cooling to BSG and charge air cooler, low-temperature radiator coolant by electronic water pump
Charge air cooler and BSG series arm are flowed through after sucking-off successively, the coolant after temperature rise enters low-temperature radiator.In addition, the
Coolant in two expansion tanks sucks electronic water pump by the water pipe before electronic water pump, prevents pressure mistake before electronic water pump
Low yield anger erosion, meanwhile, the coolant of the mixing bubble in low-temperature radiator upper water box is because the second expansion tank and low temperature dissipate
The pressure differential of hot device upper water box enters the second expansion tank by the 3rd choke valve on the 3rd gas exhaust piping.
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 the radiating requirements of engine 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
Warm up and to the delay chilling of turbocharger.In this application, it is described delay the circulatory system include the first expansion tank 001,
High temperature heat sink 007, auxiliary pump 020, engine cooling water jacket, the first water pump 003, electronic thermostat 002, oil cooler
006th, Electron pressurizing unit 008, turbocharger and warm wind 009；In this application, under engine behavior, the first water pump
Work, auxiliary pump is off working state, only plays path effect.In this application, under delay circulatory system state, first
Water pump is off working state, only plays path effect.Coolant cycles through auxiliary pump to realize, in this application, auxiliary
It is electron assistant water pump to help water pump.
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 delivery port of the auxiliary pump enters with the Electron pressurizing unit
The mouth of a river is connected；The delivery port of the Electron pressurizing unit is connected with the water inlet of the turbocharger；The turbocharger
Delivery port is connected with the water inlet of the warm wind；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 is connected with the main valve of the electronic thermostat；The main valve of the electronic thermostat and institute
State the second water inlet connection of the first water pump.
The delay circulating cooling system includes the 7th stream, the 8th stream and the 9th stream；
7th 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, from the water inlet of the high temperature heat sink come out after by institute
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 sequentially entering the Electron pressurizing unit, the whirlpool after the auxiliary pump
First water pump is returned to by the 3rd entrance of first water pump after wheel booster and the warm wind；
8th 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 passes sequentially through the auxiliary pump, electronics supercharging again
First water pump is returned to by the 3rd water inlet of first water pump after device, the turbocharger and the warm wind；
The 9th stream coolant passes sequentially through first water pump, the engine cylinder-body cooling jacket, the hair
Motivation cylinder cap water cooling water jacket, the second delivery port of the engine cooling water jacket, the auxiliary pump, electronics supercharging
The first water pump is returned to by the 3rd water inlet of first water pump after device, the turbocharger and the warm wind.
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 objectively there is unlimited concrete structure, 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)
1. a kind of engine dual cycle cooling system, it is characterised in that：Include high temperature circulation cooling system and low-temperature circulating is cold
But system, the high temperature circulation cooling system also includes 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, Electron pressurizing unit, turbocharger 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 is connected 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 Electron pressurizing unit by auxiliary pump；The delivery port of the Electron pressurizing unit increases with the turbine
The water inlet connection of depressor；The delivery port of the turbocharger is connected with the water inlet of the warm wind；The water outlet of the warm wind
Mouth is connected with the 3rd water inlet of first water pump；The main valve of the delivery port of the high temperature heat sink and the electronic thermostat
Door connection；The auxiliary-valve of the main valve of the electronic thermostat and the electronic thermostat enters with the second of first water pump
The mouth of a river is connected；
The low-temperature circulating cooling system, includes the second expansion tank, low-temperature radiator, the second water pump, 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 in it is cold
The water inlet connection of device；The delivery port of the charge air cooler is connected with the water inlet of the BSG；The delivery port of the BSG with it is described
The water inlet connection of low-temperature radiator；The delivery port of the low-temperature radiator is connected with the water inlet of second water pump；
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；
The first check valve and first throttle valve are provided with the first exhaust pipeline；Set on the second exhaust pipeline
There is second throttle；The 3rd choke valve is provided with the 3rd gas exhaust piping；
The delay circulatory system includes the first expansion tank, high temperature heat sink, auxiliary pump, engine cooling water jacket, the
One water pump, electronic thermostat, oil cooler, Electron pressurizing unit, turbocharger 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 and the height
The water inlet of temperature radiator is connected with the first delivery port of the engine cooling water jacket；The of the engine cooling water jacket
Two delivery ports connect the water inlet of the auxiliary pump；The water inlet of the delivery port of the auxiliary pump and the Electron pressurizing unit
Connection；The delivery port of the Electron pressurizing unit is connected with the water inlet of the turbocharger；The water outlet of the turbocharger
Mouth is connected with the water inlet of the warm wind；The delivery port of the warm wind is connected with the 3rd water inlet of first water pump；It is described
The delivery port of high temperature heat sink is connected with the main valve of the electronic thermostat；The main valve of the electronic thermostat and described the
The second water inlet connection of one water pump.
2. engine dual cycle cooling system according to claim 1, it is characterised in that：The high temperature circulation cooling system
Include systemic circulation cooling flowing path and partial circulating cooling flowing path；
The systemic circulation cooling flowing path includes first flow path and second flow path；
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 after electronic thermostat main valve and first water pump is returned to by the second water inlet of first water pump；
The high temperature circulation cooling system also includes the 3rd stream；3rd stream is that coolant passes sequentially through described first
Water pump, the second delivery port of the engine cooling water jacket, the auxiliary pump, the Electron pressurizing unit, the turbocharging
First water pump is returned to by the 3rd water inlet of first water pump after device, 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 first delivery port of the engine cooling water jacket,
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.
3. engine dual cycle cooling system according to claim 1, it is characterised in that：The low-temperature circulating cooling system
Include the 6th stream；
6th stream is that coolant passes sequentially through second water pump, the charge air cooler, the BSG and the low temperature radiation
Second water pump is returned after device.
4. engine dual cycle cooling system according to claim 1, it is characterised in that：The engine cooling water jacket bag
Cylinder body water jacket and cylinder cover water jacket are included.
5. engine dual cycle cooling system according to claim 1, 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.
6. engine dual cycle cooling system according to claim 1, it is characterised in that：First check valve with it is described
First throttle valve arranged in series；First check valve is arranged between first expansion tank and the first throttle valve.
7. engine dual cycle cooling system according to claim 1, it is characterised in that：The delay circulating cooling system
Include the 7th stream, the 8th stream and the 9th stream；
7th 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, from the water inlet of the high temperature heat sink come out after by the hair
First delivery port of motivation cooling jacket enters the engine cooling water jacket；Coolant passes through the engine cylinder-body cooling water
Set, Cooling of Cylinder Head water jacket enter the auxiliary pump from the second delivery port of the engine cooling water jacket；Pass through the auxiliary
The 3rd by first water pump after the Electron pressurizing unit, the turbocharger and the warm wind is sequentially entered after water pump
Entrance returns to first water pump；
8th 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 the auxiliary pump again, the Electron pressurizing unit, described
First water pump is returned to by the 3rd water inlet of first water pump after turbocharger and the warm wind；
The 9th stream coolant passes sequentially through first water pump, the second delivery port of the engine cooling water jacket, institute
State after auxiliary pump, the Electron pressurizing unit, the turbocharger and the warm wind to enter by the 3rd of first water pump
The mouth of a river returns to the first water pump.
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| CN105257387B true CN105257387B (en) | 2017-09-19 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108868951B (en) * | 2018-03-23 | 2020-05-08 | 浙江吉利控股集团有限公司 | Heating and cooling system for automobile oil pan |
| CN110439664B (en) * | 2019-07-10 | 2020-10-23 | 重庆小康工业集团股份有限公司 | Cooling system of automobile engine |
| CN114542257A (en) * | 2022-03-09 | 2022-05-27 | 广西玉柴机器股份有限公司 | Additional cooling system of engine supercharger |
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