CN105134359B - A kind of engine-cooling system using delay circulation stream - Google Patents

A kind of engine-cooling system using delay circulation stream Download PDF

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Publication number
CN105134359B
CN105134359B CN201510680675.XA CN201510680675A CN105134359B CN 105134359 B CN105134359 B CN 105134359B CN 201510680675 A CN201510680675 A CN 201510680675A CN 105134359 B CN105134359 B CN 105134359B
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cooling system
coolant
engine
circulation
water jacket
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CN105134359A (en
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苏晓芳
张应兵
张建操
刘俊
孙国宾
陈帆
倪成鑫
陈友祥
李欢
朱浩杰
房程程
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Anhui Jianghuai Automobile Group Corp
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Anhui Jianghuai Automobile Group Corp
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Abstract

The present invention relates to a kind of engine-cooling system using delay circulation stream, 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

A kind of engine-cooling system using delay circulation stream
Technical field
The invention belongs to automobile cooling system field, in particular to a kind of engine cool system using delay circulation stream System.
Background technology
More and more harsh standard is promulgated in oil consumption of the national governments to engine, for example is provided in the year two thousand twenty requirement vehicle main frame Factory persistently reduces oil consumption to 5.0L/100km;Fuel-economizing has become the development trend of world car, and most important in fuel-saving measures A technology be exactly engine supercharging miniaturization+Technology of Hybrid Electric Vehicle.
In response to the regulation of local government, it is necessary to find a kind of Engine Matching system more innovated to complete this Target.Because on the premise of dynamic property is not lost, want that decline 30% substantially one can not on the basis of at present oil consumption Completing for task.Therefore propose that face using hybrid power system+electronics supercharging, is increased by weak mixed and engine on the engine Pressure miniaturization, the requirement of reduction oil consumption is reached with this.Because whole system matches extremely complex, corresponding vehicle cooling system System design also tends to complexity.
Conventional engines cooling system, when engine works, heat is except acting, heat radiation, biography caused by fuel oil burning Lead waste gas to take away outside, remaining is cooled down by cooling system.Whole cooling circulation is divided into two states:Thermostat closes 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.
The shortcomings that prior art, is, under the engine systemic circulation state of cooling, an only major loop.With engine section The continuous popularization of oil tech, the amount of parts integrated on engine gradually increases, such as charge air cooler, BSG, Electron pressurizing unit, electricity Sub- water pump etc., these new integrated parts, need also exist for being cooled down, still, 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. etc. The HyBoost engines of exploitation have quick start-stop function, simple to rely on switching regulator mechanical water pump to reduce engine consumption level The heating demands after engine shutdown can not be met, especially lower ground area, this defect are especially prominent in temperature.Therefore, Traditional Cooling System Control Circuit can not meet the application of new technology.
In addition, traditional mechanical thermostat response is slow, unlatching, closing determine by the water temperature of engine, are unfavorable for The warming-up of engine and the quick cooling of water temperature.
With water cooling relatively, also exist to enter charge air cooler, BSG, Electron pressurizing unit 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 of whole enging cabin is had 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 Air cooling system is difficult to meet the needs of each operating mode of a variety of use environments;In addition, with the application of start-stop technology, mechanical water pump without Method meets the heating demands after engine shutdown, and especially in temperature, lower ground area, this defect are especially prominent.
As rapid starting/stopping engine, after engine is shut down, mechanical water pump is stopped, after can not meeting that engine is shut down The heating demands of driver's cabin, especially this defect is especially prominent under temperature lower ground area, city operating mode, therefore traditional cold But control loop can not meet the application of new technology.
The content of the invention
The purpose of the present invention is by proposing improved technology scheme to existing engine-cooling system, and it is dynamic particularly to solve mixing The cooling problem of Force system+electronics engine with supercharger, by the technical program, can preferably it adapt to each zero after engine is shut down The heating requirement of part, solve cooling circulation between different parts flows to problem, starts especially suitable for such as Hyboost Machine.
The present invention is achieved by the following technical solutions:
A kind of engine-cooling system using delay circulation stream, 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, switch Formula mechanical water pump, electronic thermostat, oil cooler, automatically controlled auxiliary pump, turbocharger and warm wind;The low-temperature circulating is cold But system, the expansion tank, low-temperature radiator, electronic water pump, Electron pressurizing unit, charge air cooler and BSG are included;Described low In warm circulating cooling system, come from the low-temperature radiator coolant pumped out by the electronic water pump after be divided into three tunnels, its In flow through the BSG all the way after return to the low-temperature radiator, flow through all the way and return to the low temperature after the Electron pressurizing unit and dissipate Hot device, the low-temperature radiator is returned to after flowing through the charge air cooler all the way;The high temperature circulation cooling system has systemic circulation, small Circulation and delay three kinds of coolant streams of circulation;In the delay circulation, the switching regulator mechanical water air pump inoperative, described Under the driving of automatically controlled auxiliary pump, the coolant for coming from the cylinder cover water jacket flows through the automatically controlled auxiliary pump, the turbine Enter the switching regulator mechanical water pump after booster, the warm wind, then coolant is divided into three tunnels, and the first via flows through the machine oil The cylinder cover water jacket is returned to after cooler, the second road returns to the cylinder cover water jacket after flowing through the cylinder body water jacket, and the 3rd road flows through The cylinder cover water jacket is returned to 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 Body water jacket, the coolant in the oil cooler return to the high temperature heat sink, and the coolant in the cylinder body water jacket flows 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 auxiliary-valve of the coolant in device through the electronic thermostat enters the switching regulator mechanical water pump, the cooling in 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 cylinder body water jacket, the coolant in the cylinder body water jacket is divided into two-way after flowing through the cylinder cover water jacket, cold with the machine oil all the way But the coolant in device returns to the electronic thermostat together, and another way flows through the automatically controlled auxiliary pump, the turbocharging Enter the warm wind after device.
Preferably, the above-mentioned engine-cooling system using delay circulation stream also includes water pipe, the swelling water Case supplements coolant through the water pipe to the electronic water pump and the switching regulator mechanical water pump.
Preferably, the above-mentioned engine-cooling system using delay circulation stream also includes gas exhaust piping, and the low temperature dissipates Hot device, the high temperature heat sink and the cylinder cover water jacket connect 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 using delay circulation stream of the application, delay is also add in addition to large and small cycles Circulation, after engine is shut down, switching regulator mechanical water pump and electronic water pump are stopped, and now automatically controlled auxiliary pump is opened, electricity Control auxiliary pump driving coolant continues flowing and turbocharger is cooled down, and meets the need of turbocharger delay chilling Ask, then coolant flows through heater and driver's cabin is continued to heat, and coolant coolant temperature after turbocharger carries Height, that is, improve the temperature into the coolant of warm wind;Turbocharger and the pressure difference at heater branch road both ends increase, flow Improve, improve warm wind effect.This programme can effectively complete the matching work of engine-cooling system, make vehicle thermal balance The state very good in one, circuit design are reasonable;From the angle of vehicle heat management, the oil of engine is significantly reduced Consumption.And in low-temperature circulating cooling system, Electron pressurizing unit, charge air cooler, BSG are in parallel, 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, engine charge has been effectively ensured Temperature and intake efficiency, be advantageous to play engine power performance, prevent pinking.
Further, in delay circulates, by controlling the work of electronic thermostat and not working, prolong equivalent to realizing Large and small circulation inside circulation late, more adapt 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 enter 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, flow through heater afterwards, driver's cabin is continued to heat, Meet the needs of turbocharger delay chilling, while continue to support warm wind heating system after engine shutdown, improve vehicle Performance.
Brief description of the drawings
Fig. 1 is the engine-cooling system frame diagram using delay circulation stream of one embodiment of the present invention;
Fig. 2 is the engine-cooling system frame diagram using delay circulation stream of second embodiment of the present invention.
Description of reference numerals
1 expansion tank, 2 low-temperature radiators, 3BSG, 4 charge air coolers, 5 electronic water pumps, 6 choke valves, 7 check valves, 8 high temperature dissipate Hot device, 9 electronic thermostats, 10 switching regulator mechanical water pumps, 11 oil cooler, 12 cylinder body water jackets, 13 cylinder cover water jackets, 14 is automatically controlled auxiliary Help water pump, 15 Electron pressurizing units, 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 defines
BSG:A kind of (Belt Starter Generator) belt start generator system:Engine can be achieved rise/to stop Function, realizes energy regenerating, and auxiliary increases the functions such as torsion.
Electron pressurizing unit:(Electric Super-Charger ESC) one kind can improve car engine ignition and 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 cools down to motor in the range of 0.25S, is integrated in air cleaner Portion.
Electronic water pump:A kind of motor-driven water pump, makees power set using piezoelectric, it is possible to achieve from control to drive Dynamic electronization, transmitted using electronic integration system control liquid, realize 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 such as radiator centre assembly, main function are to cool down the high-temperature water in engine water jacket, belong 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 such as radiator centre assembly, main function are to cool down engine intercooler, BSG, ESC, the water in turbocharger, category Circulated in sub-cooled.
Expansion tank:A kind of part of automobile cooling system, main function are for storing coolant, and this patent use is closed Formula expansion tank, the coolant in kettle also assist 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, utilize the useless of engine discharge Gas inertia impulsive force promotes the turbine in turbine room, and turbine drives coaxial impeller again, impeller force feed is sent by air filter pipeline Air be allowed to supercharging and enter cylinder, main function is the rotating speed of increase 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:A kind of new engine temperature control device, coolant temperature regulation in the system, coolant are followed The work of ring cooling fan is determined by engine load and controlled by control unit of engine, cold relative to traditional engine But device, there is more preferable fuel economy and lower hydrocarbon emission.
Oil cooler:A kind of thermantidote of engine, main function are 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 solid line with the arrow In systemic circulation coolant stream and low-temperature circulating cooling system in coolant flow direction, represented with dash line with the arrow Partial circulating coolant flow direction in high temperature circulation cooling system, the cooling in delay circulation is represented with tubular wire with the arrow Liquid flow direction, the water pipe in low-temperature circulating cooling system and high temperature circulation cooling system is represented with chain-dotted line with the arrow Coolant flow direction, the blast pipe in low-temperature circulating cooling system and high temperature circulation cooling system is represented with dotted line with the arrow Road gas flow direction.
With reference to figure 1, the engine-cooling system using delay circulation stream 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 radiation Device 2, electronic water pump 5, Electron pressurizing unit 15, charge air cooler 4 and BSG3;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, turbocharger 16 and warm wind 17.Although the high temperature circulation cooling system of the present embodiment cools down with low-temperature circulating System shares an expansion tank 1 and is used as exhaust and water replanishing device, but the high temperature circulation cooling system and low-temperature circulating of the present invention Cooling system is run alone, and each circulation has independent water pump and radiator, and both do not intervene mutually, and add BSG3 and electricity After the parts such as sub- booster 15, turbocharger 16, connection in series-parallel, trend, tandem, the design for cooling down logic of pipeline Just become extremely important, and it is complicated.The cooling logical design of this programme can effectively complete BSG3 and charge air cooler 4, electronics The parts such as booster 15, turbocharger 16 and engine cylinder-body, the different cooling requirements of cylinder cap.
Low-temperature circulating cooling system is used to cool down BSG3 and charge air cooler 4, Electron pressurizing unit 15.It is cold in low-temperature circulating But in system, come from low-temperature radiator 2 coolant pumped out by electronic water pump 5 after be divided into three tunnels, wherein flowing through BSG3 all the way After return to low-temperature radiator 2, return to low-temperature radiator 2 after flowing through Electron pressurizing unit 15 all the way, returned to after flowing through charge air cooler 4 all the way Low-temperature radiator 2, three's parallel connection can adapt to different coolant rate distribution, ensure that the different cooling requirements of three; In low-temperature circulating cooling system, the power of coolant comes from the electronic water pump 5, Neng Gouman of ECU (electronic control unit) controls Sufficient low engine speeds, high load capacity or engine BSG3 and charge air cooler 4, electronics when carrying out thermal starting by BSG3 front ends belt The radiating requirements of booster 15 because in general, BSG3 is less than charge air cooler 4 for the traffic demand of coolant, and both with The coolant rate demand of Electron pressurizing unit 15 is also different, and three, which is arranged in parallel, is advantageous to coolant rate distribution;It is effectively ensured Engine Inlet Temperature and intake efficiency, be advantageous to play engine power performance, prevent pinking.It is in addition, cold in low-temperature circulating But in system, the coolant in expansion tank 1 supplements coolant by the water pipe in the front of electronic water pump 5 to electronic water pump 5, Hypotony produces cavitation erosion before electronic water pump 5 can be prevented.In addition, low-temperature radiator 2 connects through gas exhaust piping and expansion tank 1 It is logical, and on gas exhaust piping, check valve 7 and choke valve 6, low temperature radiation are in series between low-temperature radiator 2 and expansion tank 1 The coolant for being mixed with bubble in device 2 is due to the pressure differential between expansion tank 1 and low-temperature radiator 2 and by choke valve 6 Enter expansion tank with check valve 7.
High temperature circulation cooling system has systemic circulation, partial circulating and delay three kinds of coolant streams of circulation.Engine water outlet Mouthful 20 water temperatures are higher than the first predetermined temperature, such as at 105 degrees Celsius, 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, high temperature circulation cooling system is in partial circulating state; The water temperature of delivery port 20 is between the first predetermined temperature and the second predetermined temperature, such as higher than 97 degrees Celsius and less than 105 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 Delivery port 20 of the coolant through engine in 11 returns to the realization of high temperature heat sink 8 and circulated, the cooling liquid stream in 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, in addition all the way successively The realization circulation of switching regulator mechanical water pump 10 is returned to after flowing through automatically controlled auxiliary pump 14, turbocharger 16, warm wind 17.Automatically controlled auxiliary Water pump keeps not working before engine misses.In systemic circulation, the coolant temperature that cylinder cover water jacket 13 flows out fully meets whirlpool The coolant temperature requirement of booster 16 is taken turns, while also improves the temperature and flow of the coolant into warm wind 17, is improved 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, and 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 Auxiliary-valve access switch formula mechanical water pump 10, the coolant in warm wind 17 are directly entered switching regulator mechanical water pump 10, switching regulator machine Coolant is pumped into oil cooler 11 and cylinder body water jacket 12 by tool water pump 10 respectively, and the coolant in cylinder body water jacket 12 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 reaches Before switching regulator mechanical water pump 10, another way, which flows through, enters warm wind 17 after automatically controlled auxiliary pump 14, turbocharger 16, in warm wind 17 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, it is automatically controlled auxiliary Water pump 14 is helped to be started working by HyBoost system batteries or the power supply of other circuits, high temperature circulation cooling system follows 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, and 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 enters switching regulator mechanical water pump 10 after flowing through automatically controlled auxiliary pump 14, turbocharger 16, warm wind 17, It is divided into three tunnels after coolant outflow switching regulator mechanical water pump 10, the first via flows through and returns to cylinder through delivery port 20 after oil cooler 11 Lid water jacket 13, the second road, which flows through, returns to cylinder cover water jacket 13 after cylinder body water jacket 12, the 3rd road flow through electronic thermostat 9 main valve, After high temperature heat sink 8 cylinder cover water jacket 13 is returned to through delivery port 20.
With reference to figure 2, 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 coolant that automatically controlled auxiliary pump 14 drives continues flowing and turbine is increased Depressor 16 is cooled down, and meets the needs of 16 delay chilling of turbocharger, and then coolant passes through warm wind 17 to driver's cabin Continue to heat.Before turbocharger 16 is arranged on warm wind 17, the coolant temperature that cylinder cover water jacket 13 is gone out fully meets turbine increasing The coolant temperature requirement of depressor 16, while the coolant temperature Jing Guo turbocharger 16 improves, that is, improves into warm wind The temperature of 17 coolant, improve capacity usage ratio and warm wind effect;Turbocharger 16 and the pressure at the branch road both ends of warm wind 17 Difference increase, flow improve, and improve warm wind effect.Regardless of whether being systemic circulation in high temperature circulation cooling system, partial circulating and prolonging Circulation late, or the low-temperature circulating in low-temperature circulating cooling system, can effectively complete the matching of engine-cooling system Work, makes vehicle thermal balance be in a very good state, circuit design is reasonable;From the angle of vehicle heat management, effectively Ground reduces the oil consumption of engine.
And in delay circulates, 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.So, turbocharger 16 can either circulate at high temperature, also can be in low temperature Lower circulation.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 water pipe, gas exhaust piping, and choke valve and check valve have been equipped with 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 prevent 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.
Electron pressurizing unit 15 is located in low-temperature circulating cooling system, and turbocharger 16 is located at high temperature circulation cooling system In and participate in delay circulation, so can adapt to both different cooling requirements.
Described above is only the description of the preferred embodiment of the present invention, it is noted that due to the finiteness of literal expression, And unlimited concrete structure objectively be present, for those skilled in the art, do not departing from the present invention On the premise of principle, some improvements and modifications can also be made, these improvements and modifications also should be regarded as protection scope of the present invention.

Claims (7)

  1. A kind of 1. engine-cooling system using delay circulation stream, it is characterised in that:Include high temperature circulation cooling system With 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, turbocharger and warm wind;
    The low-temperature circulating cooling system, include the expansion tank, low-temperature radiator, electronic water pump, Electron pressurizing unit, in Cooler and BSG;
    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, wherein returning to the low-temperature radiator after flowing through the BSG all the way, is returned to after flowing through the Electron pressurizing unit all the way The low-temperature radiator, the low-temperature radiator is returned to after flowing through the charge air cooler all the way;
    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, come from In the coolant of the cylinder cover water jacket flow through enter after the automatically controlled auxiliary pump, the turbocharger, the warm wind it is described Switching regulator mechanical water pump, then coolant be divided into three tunnels, the first via returns to the cylinder cover water jacket after flowing through the oil cooler, Second road returns to the cylinder cover water jacket after flowing through the cylinder body water jacket, and the 3rd road returns to the cylinder after flowing through the electronic thermostat Lid water jacket;
    In the delay circulation, the electronic thermostat 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 The cylinder cover water jacket is returned to after stating high temperature heat sink;
    When the electronic thermostat is in off position, after the 3rd tunnel coolant flows through the auxiliary-valve of the electronic thermostat Return to the cylinder cover water jacket and without the high temperature heat sink.
  2. 2. the engine-cooling system according to claim 1 using delay circulation stream, 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 Coolant in oil cooler returns to the high temperature heat sink, and the coolant in 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 all the way in addition, the turbine increases The switching regulator mechanical water pump is returned to after depressor, the warm wind.
  3. 3. the engine-cooling system according to claim 1 using delay circulation stream, 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 Auxiliary-valve of the liquid through the electronic thermostat enters the switching regulator mechanical water pump, the coolant in the warm wind enter described in open 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 is divided into two-way after flowing through the cylinder cover water jacket, all the way with the cooling in the oil cooler Liquid returns to the electronic thermostat together, another way flow through enter after the automatically controlled auxiliary pump, the turbocharger it is described Warm wind.
  4. 4. the engine-cooling system according to claim 1 using delay circulation stream, it is characterised in that:Also include mending Water lines, the expansion tank cool down through the water pipe to the electronic water pump and switching regulator mechanical water pump supplement Liquid.
  5. 5. the engine-cooling system according to claim 1 using delay circulation stream, it is characterised in that:Also include row Air pipe, the low-temperature radiator, the high temperature heat sink and the cylinder cover water jacket are through the gas exhaust piping and the swelling water Case connects.
  6. 6. the engine-cooling system according to claim 5 using delay circulation stream, it is characterised in that:In the row On air pipe, check valve and choke valve are in series between the low-temperature radiator and the expansion tank, and/or the high temperature dissipates Check valve and choke valve are in series between hot device and the cylinder cover water jacket and the expansion tank.
  7. 7. the engine-cooling system according to claim 5 using delay circulation stream, it is characterised in that:The low temperature Radiator connects the expansion tank from the high temperature heat sink by different entrances.
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CN105927349A (en) * 2016-04-27 2016-09-07 安徽江淮汽车股份有限公司 Engine cooling system adopting delayed circulation flow path
CN106374682B (en) * 2016-09-30 2018-10-30 安徽江淮汽车集团股份有限公司 A kind of hybrid powder motor cooling means and system
EP3530923A1 (en) * 2018-02-21 2019-08-28 Innio Jenbacher GmbH & Co OG Method of pre-heating a internal combustion engine by oil and jacket water cooler
CN109653857B (en) * 2018-12-10 2020-07-24 安徽江淮汽车集团股份有限公司 Engine cooling system

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