CN105201625B - A kind of engine-cooling system - Google Patents
A kind of engine-cooling system Download PDFInfo
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- CN105201625B CN105201625B CN201510679108.2A CN201510679108A CN105201625B CN 105201625 B CN105201625 B CN 105201625B CN 201510679108 A CN201510679108 A CN 201510679108A CN 105201625 B CN105201625 B CN 105201625B
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Abstract
The present invention relates to a kind of engine-cooling system, include high temperature circulation cooling system and low-temperature circulating cooling system；The high temperature circulation cooling system has systemic circulation, partial circulating and delay three kinds of coolant streams of circulation.By increasing automatically controlled auxiliary pump for high temperature circulation cooling system and realizing delay circulation, the heating requirement of each parts after engine is shut down can be preferably adapted to, solve cooling circulation between different parts flows to problem.
Description
Technical field
The invention belongs to automobile cooling system field, a kind of engine-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, biography
Lead waste gas to take away outside, remaining is cooled down by cooling system.Whole cooling circulation is divided into two states：Thermostat is closed
Closed state and thermostat opening, and thus it is divided into systemic circulation and partial circulating.
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, hair
Motivation is in partial circulating state；As water temperature gradually rises, the cured bag expanded by heating inside thermostat, thermostat is gradually opened,
The loop for connecting radiator is opened, and then enters systemic circulation.
Prior art the disadvantage is that, under the engine systemic circulation state of cooling, only one major loop.With engine section
Integrated amount of parts gradually increases on the continuous popularization of oil tech, engine, such as charge air cooler, Electron pressurizing unit, BSG, electricity
Sub- water pump etc., these new integrated parts need also exist for being cooled down, still, the chilling temperature, flow required for it with
And control logic and engine cylinder-body, cylinder cap it is completely different；In addition, with the application of start-stop technology, such as Ricardo Inc.
The HyBoost engines of exploitation have quick start-stop function, to reduce engine consumption level, simple to rely on switching regulator mechanical water pump
The heating demands after engine is shut down can not be met, especially in temperature lower ground area, this defect is especially prominent.Therefore,
Traditional Cooling System Control Circuit 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.
With water cooling relatively, also exist to enter charge air cooler, Electron pressurizing unit, BSG by the way of air-cooled in the prior art
The technical scheme of row cooling, but this air cooling way space requirement is high, and the arrangement to whole enging cabin has higher requirements, and arranges
Difficulty is big, and thermal balance risk is big, generally requires to be iteratively improved and can be only achieved ideal effect.Other vehicle use environment is changeable, makes
It is difficult the demand for meeting each operating mode of a variety of use environments to obtain air cooling system；In addition, with the application of start-stop technology, mechanical water pump without
Method meets the heating demands after engine is shut down, and especially in temperature lower ground area, this defect is especially prominent.
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 is, by proposing improved technology scheme to existing engine-cooling system, particularly to solve mixing dynamic
The cooling problem of Force system+electronics engine with supercharger, by the technical program, can preferably be adapted to each zero after engine is shut down
What cooling was circulated between the heating requirement of part, the different parts of solution flows to problem, is particularly suitable for use in such as Hyboost and starts
Machine.
The present invention is achieved by the following technical solutions：
A kind of engine-cooling system, includes high temperature circulation cooling system and low-temperature circulating cooling system；
The high temperature circulation cooling system includes expansion tank, high temperature heat sink, cylinder body water jacket, cylinder cover water jacket, switch
Formula mechanical water pump, electronic thermostat, oil cooler, automatically controlled auxiliary pump and warm wind；
The low-temperature circulating cooling system, include the expansion tank, low-temperature radiator, electronic water pump, BSG, in it is cold
Device, turbocharger and Electron pressurizing unit；
In the low-temperature circulating cooling system, come from the coolant of the low-temperature radiator by the electronic water pump pump
It is divided into three tunnels after going out, flows through the low-temperature radiator is returned to after the charge air cooler all the way, flows through all the way after the turbocharger
The low-temperature radiator is returned to, another road returns to the low-temperature radiator after flowing through the Electron pressurizing unit, the BSG successively；
The high temperature circulation cooling system has systemic circulation, partial circulating and delay three kinds of coolant streams of circulation；
In the delay circulation, the switching regulator mechanical water air pump inoperative, under the driving of the automatically controlled auxiliary pump,
The coolant for coming from the cylinder cover water jacket is flowed through after the automatically controlled auxiliary pump, the warm wind into the switching regulator mechanical water
Pump, then coolant be divided into three tunnels, the first via flows through and the cylinder cover water jacket is returned to after the oil cooler, and the second road flows through institute
State and the cylinder cover water jacket is returned to after cylinder body water jacket, the 3rd road, which is flowed through, returns to the cylinder cover water jacket after the electronic thermostat.
Preferably, in the delay circulation, the electronic thermostat is in running order or off position；When described
When electronic thermostat is in running order, the 3rd tunnel coolant flows through the main valve of the electronic thermostat, high temperature radiating
The cylinder cover water jacket is returned to after device；
When the electronic thermostat is in off position, the 3rd tunnel coolant flows through the secondary valve of the electronic thermostat
The cylinder cover water jacket is returned to behind the door and without the high temperature heat sink.
Preferably, in the systemic circulation, the automatically controlled auxiliary water air pump inoperative, the switching regulator mechanical water pump passes through institute
Coolant in the high temperature heat sink is pumped into the oil cooler and the cylinder by the main valve for stating electronic thermostat respectively
The coolant that coolant in body water jacket, the oil cooler is returned in the high temperature heat sink, the cylinder body water jacket is flowed through
It is divided into two-way after the cylinder cover water jacket, wherein returning to the high temperature heat sink all the way, flows through the automatically controlled auxiliary water all the way in addition
The switching regulator mechanical water pump is returned to after pump, the turbocharger, the warm wind.
Preferably, in the partial circulating, the automatically controlled auxiliary water air pump inoperative, the cylinder cover water jacket, the machine oil are cold
But the cooling that auxiliary-valve of the coolant in device through the electronic thermostat enters in the switching regulator mechanical water pump, the warm wind
Liquid enters the switching regulator mechanical water pump, and coolant is pumped into the oil cooler and institute by the switching regulator mechanical water pump respectively
State the coolant in cylinder body water jacket, the cylinder body water jacket and flow through and be divided into two-way after the cylinder cover water jacket, it is cold with the machine oil all the way
But the coolant in device returns to the electronic thermostat together, and another road flows through the automatically controlled auxiliary pump, the turbocharging
Enter the warm wind after device.
Preferably, above-mentioned engine-cooling system also include water pipe, the expansion tank through the water pipe to
The electronic water pump and switching regulator mechanical water pump supplement coolant.
Preferably, above-mentioned engine-cooling system also includes gas exhaust piping, the low-temperature radiator, the high temperature heat sink
Connected with the cylinder cover water jacket through the gas exhaust piping with the expansion tank.
Preferably, on the gas exhaust piping, check valve is in series between the low-temperature radiator and the expansion tank
Check valve and section are in series between choke valve, and/or the high temperature heat sink and the cylinder cover water jacket and the expansion tank
Flow valve.
Preferably, the low-temperature radiator connects the expansion tank from the high temperature heat sink by different entrances.
The beneficial effects of the invention are as follows：
In the engine-cooling system of the application, delay circulation is also add in addition to large and small cycles, after engine is shut down,
Switching regulator mechanical water pump and electronic water pump are stopped, and now automatically controlled auxiliary pump is opened, automatically controlled auxiliary pump driving cooling
Liquid continues flow through heater to be continued to heat to driver's cabin, so as to preferably meet heating demands and save the energy.This programme energy
The enough effective matching work for completing engine-cooling system, makes vehicle thermal balance be in a very good state, pipeline
It is reasonable in design；From the angle of vehicle heat management, the oil consumption of engine is significantly reduced.And in low-temperature circulating cooling system,
In coolant flow direction, Electron pressurizing unit, BSG, the series-parallel connection mode of charge air cooler and turbocharger disclosure satisfy that respective
Cooling requirement, and coolant leaving water temperature is not high, low-temperature circulating coolant temperature is held in less than 50 DEG C, is effectively ensured
Engine Inlet Temperature and intake efficiency, are conducive to playing engine power performance, prevent pinking.
Further, in delay circulation, by controlling the work of electronic thermostat and not working, prolong equivalent to realizing
Large and small circulation inside circulation late, more adapts to the cooling requirement of different parts under different operating modes.
Further, low-temperature radiator gas exhaust piping is built with check valve and choke valve, prevent in high temperature circulation pressure compared with
Gao Shi, high-temperature water adverse current enters low-temperature circulating, and choke valve prevents the coolant that temperature is higher in excessive expansion tank from joining in addition
With into low-temperature circulating.
Further, electronic thermostat and switching regulator mechanical water pump are used cooperatively, and can realize rapid warming-up.
Further, low-temperature radiator connects expansion tank with high temperature heat sink by different entrances, can prevent height
The gas exhaust piping hypertonia of warm circulating cooling system and influence the exhaust of low-temperature circulating cooling system.
Further, in the application, after engine is shut down, electronic water pump is stopped in mechanical water pump and low-temperature circulating,
Automatically controlled auxiliary electron water pump is started working, and electronic thermostat is opened by ECU control electrically heated rod heating wax bags, main valve, secondary valve
Door is closed, cylinder block and head water jacket, high temperature heat sink, in oil cooler the higher coolant of temperature by automatically controlled auxiliary electron water pump
Continue to cool down Electron pressurizing unit, turbocharger after pumping out, heater flowed through afterwards, driver's cabin is continued to heat,
The demand of turbocharger delay chilling is met, while engine continues to support warm wind heating system after shutting down, vehicle is improved
Performance.
Brief description of the drawings
Fig. 1 is the engine-cooling system frame diagram of one embodiment of the present invention；
Fig. 2 is the engine-cooling system frame diagram of second embodiment of the present invention.
Description of reference numerals
1 expansion tank, 2 low-temperature radiators, 3 Electron pressurizing units, 4 charge air coolers, 5 electronic water pumps, 6 choke valves, 7 check valves, 8
High temperature heat sink, 9 electronic thermostats, 10 switching regulator mechanical water pumps, 11 oil cooler, 12 cylinder body water jackets, 13 cylinder cover water jackets, 14
Automatically controlled auxiliary pump, 15BSG, 16 turbocharger, 17 warm winds, 18 check valves, 19 choke valves, 20 delivery ports.
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
The electronic match product of fired 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, power set are made using piezoelectric, it is possible to achieve from control to drive
Dynamic electronization, using electronic integration system control liquid transmission, realizes adjustability, the accuracy of liquid transporting.
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 water in engine water jacket, belongs to High-temperature cooling circulation.
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 water in turbocharger, category
In sub-cooled circulation.
Expansion tank：A kind of part of automobile cooling system, main function is that, for storing coolant, this patent is using closing
Coolant in formula expansion tank, kettle also assists in vehicle cooling water circulation, in addition, expansion tank also act as it is total to radiator
Into, middle cold heat sink assembly and the scavenging action of 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 rotating speed of engine.
Charge air cooler：The auxiliary equipment of engine turbine supercharging, is engine its role is to improve the scavenging efficiency of engine
The important set compound component of pressure charging system.
Electronic thermostat：Coolant temperature regulation, coolant are followed in a kind of new engine temperature control device, the system
The work of ring cooling fan determines by engine load and by control unit of engine control, cold relative to traditional engine
But device, with more preferable fuel economy and lower hydrocarbon emission.
Oil cooler：A kind of thermantidote of engine, main function is for cooling down engine crankcase, clutch, gas
The engine heat generating components such as door component.
In following description, as shown in Figures 1 and 2, high temperature circulation cooling system is represented with the solid line with arrow
In systemic circulation coolant stream and the coolant flow direction in low-temperature circulating cooling system, with arrow dash line represent
Partial circulating coolant flow direction in high temperature circulation cooling system, the cooling in delay circulation is represented with the tubular wire with arrow
Liquid flow direction, the water pipe in low-temperature circulating cooling system and high temperature circulation cooling system is represented with the chain-dotted line with arrow
Coolant flow direction, the blast pipe in low-temperature circulating cooling system and high temperature circulation cooling system is represented with the dotted line with arrow
Road gas flow direction.
With reference to Fig. 1, the engine-cooling system of one embodiment of the invention, include high temperature circulation cooling system and
Low-temperature circulating cooling system.Low-temperature circulating cooling system, include expansion tank 1, low-temperature radiator 2, electronic water pump 5,
BSG15, charge air cooler 4, turbocharger 16 and Electron pressurizing unit 3；High temperature circulation cooling system includes expansion tank 1, high temperature
It is radiator 8, cylinder body water jacket 12, cylinder cover water jacket 13, switching regulator mechanical water pump 10, electronic thermostat 9, oil cooler 11, automatically controlled
Auxiliary pump 14 and warm wind 17.Although the high temperature circulation cooling system of the present embodiment and shared one of low-temperature circulating cooling system are swollen
Swollen water tank 1 is transported alone as exhaust and water replanishing device, but the high temperature circulation cooling system of the present invention with low-temperature circulating cooling system
OK, each circulation has independent water pump and radiator, and both do not intervene mutually, and this to be current engine-cooling system design do not had
Have, and after adding the parts such as Electron pressurizing unit 3 and BSG15, turbocharger 16, the connection in series-parallel of pipeline, trend,
Tandem, the design of cooling logic just become extremely important, and complicated.The cooling logical design of this programme can be effectively
Complete the parts such as Electron pressurizing unit 3 and charge air cooler 4, BSG15, turbocharger 16 and engine cylinder-body, cylinder cap it is different cold
But demand.
Low-temperature circulating cooling system is cold for being carried out to Electron pressurizing unit 3 and charge air cooler 4, BSG15, turbocharger 16
But.In low-temperature circulating cooling system, come from low-temperature radiator 2 coolant pumped out by electronic water pump 5 after be divided into three tunnels, its
In flow through low-temperature radiator 2 is returned to after turbocharger 16 all the way, flow through low-temperature radiator 2 is returned to after charge air cooler 4 all the way, all the way
Flow through successively and low-temperature radiator 2 is returned to after Electron pressurizing unit 3, BSG15, this series-parallel connection stream ensure that four cooling requirement；
In low-temperature circulating cooling system, the power of coolant comes from the electronic water pump 5 of ECU (electronic control unit) controls, can
Low engine speeds, high load capacity or the engine electronics when carrying out thermal starting by the front end belt of Electron pressurizing unit 3 is met to be pressurized
Device 3 and charge air cooler 4, turbocharger 16, BSG15 radiating requirements, because in general, Electron pressurizing unit 3 is for coolant
Traffic demand be less than charge air cooler 4, and the cooling of turbocharger 16 requires highest, therefore by charge air cooler 4, turbocharger 16
As independent branch road cool down, while by Electron pressurizing unit 3 connected with BSG15 cool down be favourable；Engine has been effectively ensured to enter
Temperature degree and intake efficiency, are conducive to playing engine power performance, prevent pinking.In addition, in low-temperature circulating cooling system, it is swollen
Coolant in swollen water tank 1 supplements coolant by the water pipe in the front of electronic water pump 5 to electronic water pump 5, can prevent electricity
Hypotony produces cavitation erosion before sub- water pump 5.In addition, low-temperature radiator 2 is connected through gas exhaust piping with expansion tank 1, and in row
On air pipe, the mixing in check valve 7 and choke valve 6, low-temperature radiator 2 is in series between low-temperature radiator 2 and expansion tank 1
The coolant of bubble is entered due to the pressure differential between expansion tank 1 and low-temperature radiator 2 by choke valve 6 and check valve 7
Enter expansion tank.
High temperature circulation cooling system has systemic circulation, partial circulating and delay three kinds of coolant streams of circulation.Engine water outlet
20 water temperatures of mouth are higher than the first predetermined temperature, such as at 105 degrees Celsius, and high temperature circulation cooling system is in systemic circulation state；Start
The water temperature of machine delivery port 20 is less than the second predetermined temperature, such as at 97 degrees Celsius, and high temperature circulation cooling system is in partial circulating state；
The water temperature of delivery port 20 is located between the first predetermined temperature and the second predetermined temperature, such as Celsius less than 105 higher than 97 degrees Celsius
When spending, large and small circulation exists simultaneously；After engine is shut down in the scheduled time, such as in 15 minutes, the delay after engine shutdown
Circulation is started working.According to different engine model, predetermined temperature and the scheduled time can be different.
After engine start, the water temperature of engine water outlet 20 is higher than the first predetermined temperature, such as at 105 degrees Celsius, electronics
The main valve of thermostat 9 is opened, and auxiliary-valve is closed, and coolant enters systemic circulation state.In systemic circulation state, automatically controlled auxiliary water
Pump 14 does not work, and can now be regarded as the pipeline for allowing coolant to pass through, and switching regulator mechanical water pump 10 passes through electronics section temperature
Coolant in high temperature heat sink 8 is pumped into oil cooler 11 and cylinder body water jacket 12, oil cooler by the main valve of device 9 respectively
The coolant stream that delivery port 20 of the coolant through engine in 11 is returned in the realization circulation of high temperature heat sink 8, cylinder body water jacket 12
It is divided into two-way after cylinder cover water jacket 13, wherein returning to high temperature heat sink 8 through delivery port 20 all the way realizes circulation, flows through all the way in addition
Switching regulator mechanical water pump 10 is returned to after automatically controlled auxiliary pump 14, turbocharger 16, warm wind 17 and realizes circulation.Automatically controlled auxiliary pump
Keep not working before engine misses.In systemic circulation, the coolant temperature that cylinder cover water jacket 13 flows out fully meets turbine increasing
The coolant temperature requirement of depressor 16, while also improving the temperature and flow into the coolant of warm wind 17, improves warm wind
Effect.
The water temperature of engine water outlet 20 is less than the second predetermined temperature, such as at 97 degrees Celsius, the main valve of electronic thermostat 9
Close, auxiliary-valve is opened, high temperature circulation cooling system is in partial circulating state.In partial circulating, automatically controlled auxiliary pump 14 not work
Make, the coolant of switching regulator mechanical water pump 10 comes from the backwater of oil cooler 11, the backwater of cylinder cover water jacket 13 and warm wind 17
Backwater.Wherein, cylinder cover water jacket 13, the coolant in oil cooler 11 after delivery port 20 confluxes through electronic thermostat 9
Coolant in auxiliary-valve access switch formula mechanical water pump 10, warm wind 17 is directly entered switching regulator mechanical water pump 10, switching regulator machine
The coolant that coolant is pumped into oil cooler 11 and cylinder body water jacket 12, cylinder body water jacket 12 by tool water pump 10 respectively flows through cylinder cap
It is divided into two-way after water jacket 13, the auxiliary-valve for returning to electronic thermostat 9 together with the coolant in oil cooler 11 all the way is reached
Before switching regulator mechanical water pump 10, another road is flowed through to be entered in warm wind 17, warm wind 17 after automatically controlled auxiliary pump 14, turbocharger 16
Coolant return switching regulator mechanical water pump 10.Automatically controlled auxiliary pump 14 does not work before engine misses, can now be considered as
One section of pipeline.
When the water temperature of delivery port 20 is between the first predetermined temperature and the second predetermined temperature, above-mentioned systemic circulation, small follow
Ring coexists.
And after tail-off, switching regulator mechanical water pump 10 does not work, after the scheduled time, such as 15min is automatically controlled auxiliary
Water pump 14 is helped to be powered start-up operation by HyBoost system batteries or other circuits, high temperature circulation cooling system is followed into delay
Ring working condition.In the delay circulation of one embodiment shown in Fig. 1, electronic thermostat 9 is in running order, electronics section
Warm device 9 is heated by electrically heated rod, and main valve is opened, and auxiliary-valve is closed, under the driving of automatically controlled auxiliary pump 14, is dissipated from high temperature
Hot device 8, oil cooler 11, the coolant in cylinder cover water jacket 13 converge to the cylinder cover water jacket 13 of head exhaust side, then cylinder
The coolant of lid water jacket 13, which is flowed through, enters switching regulator mechanical water pump 10 after automatically controlled auxiliary pump 14, warm wind 17, coolant outflow is opened
It is divided into three tunnels after pass formula mechanical water pump 10, the first via flows through after oil cooler 11 and to return to cylinder cover water jacket 13 through delivery port 20,
Two roads flow through and cylinder cover water jacket 13 are returned to after cylinder body water jacket 12, and the 3rd road flows through the main valve of electronic thermostat 9, high temperature heat sink 8
Cylinder cover water jacket 13 is returned to by delivery port 20.
With reference to Fig. 2, from unlike one embodiment in Fig. 1, in second embodiment shown in Fig. 2, prolonging
Late in circulation, electronic thermostat 9 is in off position, and now the main valve of electronic thermostat 9 is closed, and auxiliary-valve is opened, and comes
Directly returned to from after the auxiliary-valve that electronic thermostat 9 is flowed through in the 3rd tunnel coolant of switching regulator mechanical water pump 10 through delivery port 20
Cylinder cover water jacket 13 and without high temperature heat sink 8.
The effect of delay circulation in Fig. 1 and Fig. 2 is, after engine is shut down, switching regulator mechanical water pump 10 and electronic water
Pump 5 is stopped, and now automatically controlled auxiliary pump 14 is opened, and the automatically controlled driving of auxiliary pump 14 coolant continues flowing and passes through warm wind
17 pairs of driver's cabins continue to heat, and can continue to be heated using cooling down fluid residual heat under engine off condition, satisfaction heats
It is required that, while continuing to cool down engine, improve capacity usage ratio and warm wind effect.Regardless of whether being high temperature circulation cooling
Systemic circulation, partial circulating and delay circulation in system, or the low-temperature circulating in low-temperature circulating cooling system, can be effective
The matching work of engine-cooling system is completed, vehicle thermal balance is in a very good state, circuit design is reasonable；
From the angle of vehicle heat management, the oil consumption of engine is significantly reduced.
And in delay circulation, by controlling the work of electronic thermostat 9 and the two states that do not work, equivalent to postponing
Circulation is internal to have separated the systemic circulation Jing Guo high temperature heat sink 8 and the partial circulating without high temperature heat sink 8 again, more adapts to not
The cooling requirement of different parts with operating mode.In such manner, it is possible to which the heating demands or engine that adapt to respectively in driver's cabin are cold
But demand.Therefore, this programme can also be considered as a kind of new method being controlled to engine-cooling system.
It is similar with the water pipe in low-temperature circulating cooling system, there is also water pipe in high temperature circulation cooling system,
Expansion tank 1 supplements coolant through water pipe to switching regulator mechanical water pump 10.
It is similar with the gas exhaust piping in low-temperature circulating cooling system, there is also gas exhaust piping in high temperature circulation cooling system,
High temperature heat sink 8 and cylinder cover water jacket 13 connect 1 through gas exhaust piping with expansion tank.And on gas exhaust piping, high temperature heat sink 8
Check valve 18 and choke valve 19 are in series between cylinder cover water jacket 13 and expansion tank 1.Low-temperature radiator 2 and high temperature heat sink 8
Expansion tank 1 is connected by different entrances and realizes exhaust, the gas exhaust piping pressure mistake of high temperature circulation cooling system can be prevented
It is high and influence the exhaust of low-temperature circulating cooling system.In two embodiments of the application, low-temperature circulating cooling system and high temperature
Circulating cooling system employs and choke valve and check valve has been equipped with water pipe, gas exhaust piping, and gas exhaust piping, real
Low-temperature circulating cooling system or high temperature circulation cooling system can also be independently matched with water pipe, gas exhaust piping, check valve on border
And choke valve.Advantage in the application is that low-temperature radiator gas exhaust piping can be prevented built with check valve 7 and choke valve 6
When pressure is higher in high temperature circulation, high-temperature water adverse current enters low-temperature circulating, and choke valve 6 is prevented in excessive expansion tank 1 in addition
The higher coolant of temperature is participated in low-temperature circulating.And electronic thermostat 9 and switching regulator mechanical water pump 10 are used cooperatively, energy
Enough realize rapid warming-up.
BSG15, turbocharger 16 are located in low-temperature circulating cooling system, complete using the coolant in low-temperature circulating system
Both cooling requirements are disclosure satisfy that entirely.
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 (8)
1. a kind of engine-cooling system, it is characterised in that：Include high temperature circulation cooling system and low-temperature circulating cooling system；
The high temperature circulation cooling system includes expansion tank, high temperature heat sink, cylinder body water jacket, cylinder cover water jacket, switching regulator machine
Tool water pump, electronic thermostat, oil cooler, automatically controlled auxiliary pump and warm wind；
The low-temperature circulating cooling system, includes the expansion tank, low-temperature radiator, electronic water pump, BSG, charge air cooler, whirlpool
Take turns booster and Electron pressurizing unit；
In the low-temperature circulating cooling system, come from the low-temperature radiator coolant pumped out by the electronic water pump after
It is divided into three tunnels, flows through the low-temperature radiator is returned to after the charge air cooler all the way, is returned to after the turbocharger is flowed through all the way
The low-temperature radiator, another road returns to the low-temperature radiator after flowing through the Electron pressurizing unit, the BSG successively；
The high temperature circulation cooling system has systemic circulation, partial circulating and delay three kinds of coolant streams of circulation；
In the delay circulation, the switching regulator mechanical water air pump inoperative under the driving of the automatically controlled auxiliary pump, comes from
Flowed through in the coolant of the cylinder cover water jacket and enter the switching regulator mechanical water pump after the automatically controlled auxiliary pump, the warm wind,
Then coolant is divided into three tunnels, and the first via flows through and the cylinder cover water jacket is returned to after the oil cooler, and the second road flows through described
The cylinder cover water jacket is returned to after cylinder body water jacket, the 3rd road, which is flowed through, returns to the cylinder cover water jacket after the electronic thermostat.
2. engine-cooling system according to claim 1, it is characterised in that：In the delay circulation, the electronics section
Warm device is in running order or off position；
When the electronic thermostat is in running order, the 3rd tunnel coolant flows through the main valve of the electronic thermostat, institute
State and the cylinder cover water jacket is returned to after high temperature heat sink；
When the electronic thermostat is in off position, the 3rd tunnel coolant is flowed through after the auxiliary-valve of the electronic thermostat
Return to the cylinder cover water jacket and without the high temperature heat sink.
3. engine-cooling system according to claim 1 or 2, it is characterised in that：
In the systemic circulation, the automatically controlled auxiliary water air pump inoperative, the switching regulator mechanical water pump passes through the electronics section temperature
Coolant in the high temperature heat sink is pumped into the oil cooler and the cylinder body water jacket by the main valve of device respectively, described
The coolant that coolant in oil cooler is returned in the high temperature heat sink, the cylinder body water jacket flows through the cylinder cover water jacket
After be divided into two-way, wherein return to the high temperature heat sink all the way, flow through the automatically controlled auxiliary pump, the turbine all the way in addition and increase
The switching regulator mechanical water pump is returned to after depressor, the warm wind.
4. engine-cooling system according to claim 1 or 2, it is characterised in that：
In the partial circulating, the automatically controlled auxiliary water air pump inoperative, the cooling in the cylinder cover water jacket, the oil cooler
The coolant that auxiliary-valve of the liquid through the electronic thermostat enters in the switching regulator mechanical water pump, the warm wind is opened described in entering
Coolant is pumped into the oil cooler and the cylinder body water jacket by pass formula mechanical water pump, the switching regulator mechanical water pump respectively,
Coolant in the cylinder body water jacket, which is flowed through, is divided into two-way after the cylinder cover water jacket, all the way with the cooling in the oil cooler
Liquid returns to the electronic thermostat together, and another road, which is flowed through, enters described after the automatically controlled auxiliary pump, the turbocharger
Warm wind.
5. engine-cooling system according to claim 1 or 2, it is characterised in that：Also include water pipe, the expansion
Water tank supplements coolant through the water pipe to the electronic water pump and the switching regulator mechanical water pump.
6. engine-cooling system according to claim 1 or 2, it is characterised in that：Also include gas exhaust piping, the low temperature
Radiator, the high temperature heat sink and the cylinder cover water jacket are connected through the gas exhaust piping with the expansion tank.
7. engine-cooling system according to claim 6, it is characterised in that：On the gas exhaust piping, the low temperature
Check valve and choke valve, and/or the high temperature heat sink and the cylinder head water are in series between radiator and the expansion tank
Check valve and choke valve are in series between set and the expansion tank.
8. engine-cooling system according to claim 6, it is characterised in that：The low-temperature radiator dissipates with the high temperature
Hot device connects the expansion tank by different entrances.
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| CN201510679108.2A CN105201625B (en) | 2015-10-16 | 2015-10-16 | A kind of engine-cooling system |
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| CN105673178B (en) * | 2016-01-13 | 2018-03-16 | 奇瑞汽车股份有限公司 | A kind of cooling system and its control method with egr system engine |
| CN105863807A (en) * | 2016-04-27 | 2016-08-17 | 安徽江淮汽车股份有限公司 | Improved structure of engine cooling system comprising double expansion water tanks |
| 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 |
| CN105863805A (en) * | 2016-04-27 | 2016-08-17 | 安徽江淮汽车股份有限公司 | Cooling system comprising auxiliary water pump and double expansion water tanks |
| CN105697121A (en) * | 2016-04-27 | 2016-06-22 | 安徽江淮汽车股份有限公司 | Cooling system of dual expansion water tank |
| FR3055368B1 (en) * | 2016-08-24 | 2018-08-24 | Peugeot Citroen Automobiles Sa | THERMAL MOTOR AIR SUPPLY SYSTEM COOLING DEVICE, AND AIR SUPPLY SYSTEM EQUIPPED WITH SUCH A DEVICE |
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