CN105888809A - Double-cooling circulation system improvement structure - Google Patents

Double-cooling circulation system improvement structure Download PDF

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Publication number
CN105888809A
CN105888809A CN201610284893.6A CN201610284893A CN105888809A CN 105888809 A CN105888809 A CN 105888809A CN 201610284893 A CN201610284893 A CN 201610284893A CN 105888809 A CN105888809 A CN 105888809A
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CN
China
Prior art keywords
water pump
water
cooling
outlet
water inlet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610284893.6A
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Chinese (zh)
Inventor
何竹革
丁吉民
左炜晨
张利
胡光辉
严鑫映
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Anhui Jianghuai Automobile Group Corp
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Anhui Jianghuai Automobile Group Corp
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Priority to CN201610284893.6A priority Critical patent/CN105888809A/en
Publication of CN105888809A publication Critical patent/CN105888809A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01PCOOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00Liquid cooling
    • F01P3/20Cooling circuits not specific to a single part of engine or machine
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60HARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00Heating, cooling or ventilating [HVAC] devices
    • B60H1/02Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant
    • B60H1/04Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant from cooling liquid of the plant
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01PCOOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01PCOOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/08Arrangements of lubricant coolers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01PCOOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00Pumping cooling-air or liquid coolants
    • F01P5/10Pumping liquid coolant; Arrangements of coolant pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01PCOOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00Controlling of coolant flow
    • F01P7/14Controlling of coolant flow the coolant being liquid
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01PCOOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00Controlling of coolant flow
    • F01P7/14Controlling of coolant flow the coolant being liquid
    • F01P7/16Controlling of coolant flow the coolant being liquid by thermostatic control
    • F01P7/165Controlling of coolant flow the coolant being liquid by thermostatic control characterised by systems with two or more loops
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B29/00Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04Cooling of air intake supply
    • F02B29/0406Layout of the intake air cooling or coolant circuit
    • F02B29/0437Liquid cooled heat exchangers
    • F02B29/0443Layout of the coolant or refrigerant circuit
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01PCOOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00Pumping cooling-air or liquid coolants
    • F01P5/10Pumping liquid coolant; Arrangements of coolant pumps
    • F01P2005/105Using two or more pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01PCOOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00Controlling of coolant flow
    • F01P7/14Controlling of coolant flow the coolant being liquid
    • F01P2007/146Controlling of coolant flow the coolant being liquid using valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01PCOOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2060/00Cooling circuits using auxiliaries
    • F01P2060/02Intercooler
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01PCOOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2060/00Cooling circuits using auxiliaries
    • F01P2060/04Lubricant cooler
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01PCOOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2060/00Cooling circuits using auxiliaries
    • F01P2060/08Cabin heater
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01PCOOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2060/00Cooling circuits using auxiliaries
    • F01P2060/12Turbo charger
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/12Improving ICE efficiencies

Abstract

The invention relates to a double-cooling circulation system improvement structure. The double-cooling circulation system improvement structure comprises a high-temperature circulating cooling system and a low-temperature circulating cooling system; the high-temperature circulating cooling system comprises an expansion tank, a high temperature heat dissipater, an engine cooling water jacket, a first water pump, an electronic thermostat, an engine oil cooler and hot air; the low-temperature circulating cooling system comprises an expansion tank, a low temperature heat dissipater, a turbo-supercharger, a second water pump, an intercooler, a BSG and an electric supercharger. According to the structure, the two circulating cooling systems are arranged, the high temperature heat dissipater and the low temperature heat dissipater are arranged so that the requirements for cooling temperature of different parts to be cooled can be effectively met, and the sizes of the cooling systems are not increased through the technical scheme. The BSG and the electric supercharger adopted in the low-temperature circulating cooling system are connected to the turbo-supercharger and the intercooler in parallel after connected in series, and therefore the stability of the pressure difference of the components is guaranteed.

Description

A kind of double cooling recirculation system improved structure
Technical field
The invention belongs to car engine cooling system field, specifically refer to a kind of double cooling recirculation system and improve Structure.
Background technology
The oil consumption of electromotor is promulgated more and more harsh standard by national governments, such as specifies in the year two thousand twenty requirement Automobile main frame maker persistently reduces oil consumption to 5.0L/100km;Fuel-economizing has become as the development trend of world car, And a most important technology is exactly the supercharging miniaturization+Technology of Hybrid Electric Vehicle of electromotor in fuel-saving measures.
In response to the regulation of local government, it is necessary to find a kind of Engine Matching system more innovated Become this target.Because on the premise of not losing dynamic property, want oil consumption to decline on the basis of at present 30% is substantially an impossible mission.It is proposed that face uses hybrid power system on the engine The supercharging of+electronics, by weak mixed and engine booster miniaturization, reduces the requirement of oil consumption with this.By Extremely complex in whole system coupling, corresponding car load design of Cooling System also tends to complexity.
Conventional engines cooling system, during electromotor work, the heat that fuel oil burning produces is except acting, warm Radiation and conduction are outside waste gas is taken away, and remaining heat is both needed to be cooled down by cooling system.At conventional engine In machine cooling system, whole cooling circulation is divided into two kinds, i.e. partial circulating under thermostat closed mode and Jie Wen Systemic circulation under device opening.Thermostat closed mode, now electromotor is in and just starts duty, Water temperature does not rises up, and now thermostat cuts out so that cooling water, not by radiator, is conducive to quickly Improve water temperature, make electromotor reach optimum Working, the La Bao along with water temperature gradually rises, in thermostat Expanded by heating, thermostat is gradually opened, and the loop of connection radiator is opened, and then enters systemic circulation state.
Under the systemic circulation state of conventional engines cooling system, an only major loop, along with electromotor saves The continuous popularization of oil tech, amount of parts integrated on electromotor gradually increases, as charge air cooler, BSG, Electron pressurizing unit etc., these new integrated parts, need also exist for cooling down, but, its institute Chilling temperature, flow and the control logical AND engine cylinder-body, the cylinder cap that need are completely different;Therefore, Traditional cooling controls loop can not meet the application of new technique.
It addition, traditional mechanical type thermostat response is slowly, opens, close the water temperature by electromotor Determine, be unfavorable for the warming-up of electromotor and the quick cooling of water temperature.
Prior art proposes, and charge air cooler, BSG and Electron pressurizing unit are used air-cooled technology, but air-cooled High to space requirement, whole enging cabin is disposed with high requirement, arranges that difficulty is big, heat evil meter Calculating complexity, thermal balance risk is big, can be only achieved ideal effect it is generally required to be iteratively improved, additionally car load Use environment is changeable so that air cooling system is difficult to meet the demand of the multiple each operating mode of use environment.
To this end, existing engine-cooling system is proposed to improve by applicant, the early stage being specifically shown in applicant is special Profit, CN 105134359A, a kind of engine-cooling system using delay circulation stream;CN 103806999A, a kind of engine-cooling system;CN 105257384A, a kind of engine-cooling system; CN 105179065A, a kind of electromotor dual cycle cooling system with double expansion tank;Existing at these In technology, applicant by existing engine cooling and circulating system by improve stream, be improved to high temperature Blood circulation and cold cycle system, and postpone blood circulation, comprehensively improve electromotor and respectively need Want the cooling effect of cooling-part, and such improvement technical scheme, compared with technical scheme compare, Blood circulation cooling effectiveness whole to electromotor improves a lot;But at further research process In, it has been found that the different coolings order between each parts that electromotor and whole needs cool down, The most different cooling flowing paths, the raising to the cooling effectiveness of whole cooling system is different, and this Difference does not have comparability, the i.e. little improvement to cooling flowing path and is respectively provided with different cooling effects.
Summary of the invention
It is an object of the invention to by proposing to improve technical scheme, by this technology to existing engine-cooling system Scheme, it is possible to preferably adapt to the problem that flows to of coolant circulation between different parts, solve charge air cooler, BSG, Electron pressurizing unit, turbocharger, the cooling problem of oil cooler, and can solve the problem that low turn of electromotor Delayed quench function after radiating requirements higher for BSG during speed and turbocharger shutdown.
The present invention is achieved by the following technical solutions:
A kind of double cooling recirculation system improved structure, includes high temperature circulation cooling system and cold cycle cooling System;
Described high temperature circulation cooling system include expansion tank, high temperature heat sink, engine cooling water jacket, First water pump, electronic thermostat, oil cooler and warm braw;
Described expansion tank is connected with the first water inlet of described first water pump;The outlet of described first water pump Water inlet with described engine cooling water jacket and described oil cooler is connected respectively;Described oil cooler Outlet connect water inlet and the auxiliary-valve of described electronic thermostat of described high temperature heat sink respectively;Described First outlet of engine cooling water jacket connects the water inlet of described high temperature heat sink and described electronics respectively The auxiliary-valve of thermostat;Second outlet of described engine cooling water jacket connects the water inlet of described warm braw; The outlet of described high temperature heat sink is connected with the main valve of described electronic thermostat;Described electronic thermostat The auxiliary-valve of main valve and described electronic thermostat all the second water inlets with described first water pump are connected;Described The outlet of warm braw is connected with the 3rd water inlet of described first water pump;
Described cold cycle cooling system, include described expansion tank, low-temperature radiator, turbocharger, Electron pressurizing unit, the second water pump, charge air cooler and BSG;
Described expansion tank is connected with the water inlet of described second water pump;The outlet of described second water pump is respectively It is connected with the water inlet of the water inlet of described BSG, the water inlet of described charge air cooler and described turbocharger; The outlet of described charge air cooler is connected with the water inlet of described low-temperature radiator;The outlet of described BSG and institute The water inlet stating Electron pressurizing unit connects;The outlet of described turbocharger enters with described low-temperature radiator The mouth of a river connects;The outlet of described Electron pressurizing unit is connected with the water inlet of described low-temperature radiator;Described low The outlet of temperature radiator is connected with the water inlet of described second water pump;
It is connected between described expansion tank with described high temperature heat sink and described engine cooling water jacket and has One gas exhaust piping;It is connected between described expansion tank with described low-temperature radiator and has second exhaust pipeline.
Described high temperature circulation cooling system includes systemic circulation cooling flowing path and partial circulating cooling flowing path;
Described systemic circulation cooling flowing path includes first flow path and second flow path;
Described first flow path is that coolant passes sequentially through described first water pump, described engine cooling water jacket, institute Returned by the second water inlet of described first water pump after stating high temperature heat sink, described electronic thermostat main valve To described first water pump;
Described second flow path is that coolant passes sequentially through described first water pump, described oil cooler, described height Institute is returned to by the second water inlet of described first water pump after temperature radiator, described electronic thermostat main valve State the first water pump;
Described partial circulating cooling flowing path includes the 4th stream and the 5th stream;
Described 4th stream is that coolant passes sequentially through described first water pump, described engine cooling water jacket, institute Described first water pump is returned by the second water inlet of described first water pump after stating the auxiliary-valve of electronic thermostat;
Described 5th stream is that coolant passes sequentially through described first water pump, described oil cooler and described electricity Described first water pump is returned by the second water inlet of described first water pump after the auxiliary-valve of sub-thermostat.
Described high temperature circulation cooling system also includes the 3rd stream;Described 3rd stream is that coolant is led to successively The 3rd of described first water pump is passed through after crossing described first water pump, described engine cooling water jacket and described warm braw Water inlet returns described first water pump.
Described cold cycle cooling system includes the 6th stream, the 7th stream and the 8th stream;
Described 6th stream be coolant from the outlet of described second water pump out after, pass sequentially through described in Described second water pump is returned again to after cooler and described low-temperature radiator;
Described 7th stream be coolant from the outlet of described second water pump out after, pass sequentially through described Described second water pump is returned after BSG, described Electron pressurizing unit and described low-temperature radiator;
Described 8th stream be coolant from the outlet of described second water pump out after, pass sequentially through described whirlpool Described second water pump is returned after wheel supercharger and described low-temperature radiator.
Described engine cooling water jacket includes cylinder body water jacket and cylinder cover water jacket.
Described first water pump is switching regulator mechanical water pump;Described second water pump is electronic water pump.
Described first exhaust pipeline is provided with the first check valve and first throttle valve;In described second exhaust The second check valve and second throttle it is provided with on pipeline.
Described first check valve and described first throttle valve arranged in series;Described first check valve is arranged at described Between expansion tank and described first throttle valve.
Described second check valve and described second throttle arranged in series;Described second check valve is arranged at described Between expansion tank and described second throttle.
The invention has the beneficial effects as follows:
1, in cold cycle cooling system, there is single low-temperature radiator, make cold cycle cool down liquid temperature Degree is held in less than 55 DEG C, and low-temperature radiator exhaust hose, built with check valve and choke valve, prevents height When in temperature circulating cooling system, pressure is higher, high-temperature water adverse current enters cold cycle cooling system, additionally choke valve Prevent the coolant that in too much expansion tank, temperature is higher from participating in cold cycle cooling system.Low temperature Charge air cooler branch road, turbocharger bypass and BSG and Electron pressurizing unit series arm in circulating cooling system In parallel, it is ensured that turbocharger bypass, BSG branch road, the pressure differential of charge air cooler branch road, be conducive to starting The cooling of machine air inlet, and in this application, charge air cooler branch road forms cooling circuit with low-temperature radiator, carries The high cooling effect of charge air cooler, has been effectively ensured Engine Inlet Temperature and intake efficiency, has been conducive to playing Engine power performance, prevents pinking.Meanwhile, turbocharger and charge air cooler use single branch road ensure that Turbocharger and the cooling effect of charge air cooler.
2, the application is respectively arranged with check valve and choke valve in high temperature heat sink, cylinder cover water jacket exhaust hose, Adverse current when preventing expansion tank or other stream coolant pressure higher, and in preventing expansion tank too much not Before water pump, the circulation of in-engine coolant, the guarantor that this device is strong is flowed into through the high temperature coolant of radiator Protect the thermal balance of electromotor.
3, the expansion tank of the application has two water inlets, cold cycle exhaustor and high temperature circulation exhaustor Enter expansion tank from different water inlets respectively, prevent high temperature circulation exhaustor hypertonia from affecting low temperature and dissipate The aerofluxus of hot device.
Accompanying drawing explanation
Fig. 1 is conventional engines cooling system frame diagram;
Fig. 2 is the double cooling recirculation system frame diagram of the present invention.
Description of reference numerals
1 dotted line, 2 dotted lines, 3 dotted lines, 4 dotted lines, 5 solid lines, 6 solid lines, 001 swelling water Case, 002 electronic 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 braw, 010 electronic water Pump, 012 low-temperature radiator, 013BSG, 014 turbocharger, 015 charge air cooler, 016 One check valve, 017 first throttle valve, 018 second check valve, 019 second throttle.
Detailed description of the invention
Describing technical scheme by the following examples in detail, below example is only exemplary , it is only capable of for explaining and illustrate technical scheme, and is not to be construed as the technology of the present invention side The restriction of case.
Critical component defines
BSG:(Belt Starter Generator) a kind of belt start generator system: can realize sending out Motivation plays/stops function, it is achieved energy regenerating, and auxiliary increases the functions such as torsion.
Electron pressurizing unit: (Electric Super-Charger ESC) one can improve automobile engine Igniting and the electronic match product of fired state, Main Function is low side moment of torsion and the moment of torsion improving electromotor Response, can be dragged to 70000 turns by the rotating speed of motor in the range of 0.25S, need air to enter motor Row cooling, is integrated in inside air filter.
Electronic water pump: a kind of motor-driven water pump, is directly controlled its rotating speed by control unit of engine System, it is not affected by engine speed, can work flexibly according to the actual cooling requirement of electromotor.
High temperature heat sink: high temperature heat sink is a part for automobile cooling system, mainly by intake chamber, water outlet The part assemblies such as room, main leaf and radiator centre, Main Function is the high temperature cooling in cooling engine water jacket Liquid, belongs to high temperature cooling circulation.
Low-temperature radiator: low-temperature radiator is a part for automobile cooling system, mainly by intake chamber, water outlet The part assemblies such as room, main leaf and radiator centre, Main Function be cooling engine intercooler, BSG, ESC, Coolant in turbocharger, belongs to sub-cooled circulation.
Expansion tank: the parts of a kind of automobile cooling system, Main Function is to provide an expansion to coolant Space, the coolant of timely replenishment system disappearance, and remove in cooling system stagnant air, this patent Using closed-loop control type expansion tank, it is cooling water circulation that the coolant in kettle also assists in car load, it addition, swollen Swollen water tank also acts as to heat radiator assembly, middle cold heat sink assembly and the scavenging action of electromotor.
Turbocharger: a kind of air compressor, increases air inflow by compressed air, utilizes electromotor The waste gas inertia impulsive force discharged promotes the turbine in turbine room, and turbine drives again coaxial impeller, impeller pressure Sending the air sent here by air filter pipeline to be allowed to supercharging and enter cylinder, Main Function is to increase the output of electromotor Power.
Charge air cooler: the auxiliary equipment of engine turbine supercharging, its role is to reduce Engine Inlet Temperature, carries The intake efficiency of high electromotor, and prevent pinking, it is the important combiner of engine supercharging system.
Electronic thermostat: the relatively conventional thermostat of electronic thermostat adds electric heating function, thermostatic valve Unlocking condition is more flexible, and control unit gathers sensor signal and draws value of calculation according to the program set, right Electronic thermostat thermostat unit load corresponding voltage, use electrical heating wax bag mode open main valve Door.Cooling system under the various operating mode of electromotor can be controlled more accurately relative to tradition thermostat and enter radiator Coolant rate, change water range of DO.
Oil cooler: full name oil cooler, cold air (but) device of a kind of electromotor (lubricating oil), point For air-cooled and water-cooled.Water-cooling engine oil cooler utilize coolant temperature to control the temperature of lubricating oil, When lubricating oil temperature height, reduce temperature by coolant;During engine start, then from cooling water, absorb heat Amount makes lubricating oil temperature promote rapidly.
As in figure 2 it is shown, the present invention provides a kind of double cooling recirculation system improved structure, include high temperature circulation Cooling system and cold cycle cooling system;In this application, high temperature circulation cooling system circulates cold with supporting temperature But system shares an expansion tank as water replanishing device before aerofluxus and pump.
In the accompanying drawing of the present embodiment, what dotted line 1 represented is that the partial circulating under electronic thermostat closed mode returns Road;What dotted line 2 represented is first exhaust pipeline;What dotted line 3 represented is the road of second exhaust;Dotted line 4 For water pipe;Solid line 5 is the systemic circulation loop under electronic thermostat opening;Solid line 6 follows for low temperature Ring cooling system stream.
High temperature circulation cooling system, electromotor works, and the heat that fuel oil burning produces is except acting, hot spoke Penetrating, conduct outside waste gas is taken away, remaining is cooled down by cooling system.Whole high temperature circulation is cold But system is divided into two states: electronic thermostat closed mode (main valve closed mode) and electronics save Temperature device opening (main valve opening).
It is cold that described high temperature circulation cooling system includes expansion tank 001, high temperature heat sink 007, electromotor But water jacket, the first water pump 003, electronic thermostat 002, machine oil cooler 006 and warm braw 009.In this reality Executing in example, 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 be not in the range of this application claims, as coolant It 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 is equal Do not affect the protection domain of the application, this application claims in the range of be requirement electromotor cooling to be had water Set, i.e. needs coolant cool down rather than use air cooling.
Described expansion tank is connected with the first water inlet of described first water pump;The outlet of described first water pump Water inlet with described engine cooling water jacket and described oil cooler is connected respectively;Described oil cooler Outlet connect water inlet and the auxiliary-valve of described electronic thermostat of described high temperature heat sink respectively;Described First outlet of engine cooling water jacket connects the water inlet of described high temperature heat sink and described electronics respectively The auxiliary-valve of thermostat;Second outlet of described engine cooling water jacket connects the water inlet of described warm braw; The outlet of described high temperature heat sink is connected with the main valve of described electronic thermostat;Described electronic thermostat The auxiliary-valve of main valve and described electronic thermostat all the second water inlets with described first water pump are connected;Described The outlet of warm braw is connected with the 3rd water inlet of described first water pump.In other the embodiment of the application, It is one that first outlet of engine cooling water jacket and the second outlet of engine cooling water jacket can collect Individual outlet;It is one that first water inlet of the first water pump, the second water inlet and the 3rd water inlet can collect Water inlet.
High temperature circulation when described high temperature circulation cooling system includes described electronic thermostat closed mode is cold But system (partial circulating cooling flowing path), and high temperature circulation cooling system during electronic thermostat opening (systemic circulation cooling flowing path), also includes high temperature circulation cooling system during the semi-open state of electronic thermostat (partial circulating cooling flowing path and systemic circulation cooling flowing path coexist under cooling flowing path).
Electronic thermostat closed mode:
Now electromotor is in and just starts duty, and water temperature does not rises up, now, and electronics joint temperature Device receives Engine ECU signal, according to the load shape of engine water outlet coolant temperature and electromotor State determines that open and close, engine load are low, and electronic thermostat remains turned-off, and electromotor is in little Recurrent state, rapid warming-up, advantageously reduce cold start-up oil consumption.
High temperature circulation cooling system during electronic thermostat closed mode includes complete partial circulating loop the (the 4th Stream and the 5th stream) and warm braw loop (the 3rd stream).
Described 4th stream is that coolant passes sequentially through described first water pump, described engine cooling water jacket, institute Described first water pump is returned by the second water inlet of described first water pump after stating the auxiliary-valve of electronic thermostat;
Described 5th stream is that coolant passes sequentially through described first water pump, described oil cooler and described electricity Described first water pump is returned by the second water inlet of described first water pump after the auxiliary-valve of sub-thermostat.
And can determine to open warm braw loop, the i.e. the 3rd stream as required, described 3rd stream is cooling Liquid passes through described first water after passing sequentially through described first water pump, described engine cooling water jacket and described warm braw 3rd water inlet of pump returns described first water pump.
In this application, the unlatching of electronic thermostat is by coolant temperature control, in the present embodiment, starts During machine middle-low load, setting the unlatching temperature of electronic thermostat as 97 degrees Celsius, standard-sized sheet temperature 112 is Celsius Degree;During high engine load operating mode, set the unlatching temperature of electronic thermostat as 85 degrees Celsius, standard-sized sheet temperature Spend 100 degrees Celsius;During electromotor middle-low load, entering the coolant temperature of electronic thermostat less than opening During temperature, high temperature circulation cooling system is all run by partial circulating stream.In the other embodiments of the application, The unlatching temperature of electronic thermostat can set as required, has no effect on the protection domain of the application, such as The unlatching temperature of electronic thermostat is arranged at 90,93,95,100 degrees Celsius of grades.Equally, electronics The full open temperature of thermostat main valve can also be set as other temperature, such as 105, and 108,115 is Celsius Degree etc..
Above-mentioned 4th stream and the 5th is in-engine normal open loop.
In the present embodiment, when the coolant temperature entering into electronic thermostat is higher than 112 degrees Celsius, electricity The main valve of sub-thermostat is fully open, the auxiliary-valve Close All of electronic thermostat, now, and the 4th stream Close with the 5th stream.
The systemic circulation cooling flowing path of high temperature circulation cooling system during described electronic thermostat opening includes There are first flow path and second flow path.
Described first flow path is that coolant passes sequentially through described first water pump, described engine cooling water jacket, institute Returned by the second water inlet of described first water pump after stating high temperature heat sink, described electronic thermostat main valve To described first water pump.
Described second flow path is that coolant passes sequentially through described first water pump, described oil cooler, described height Institute is returned to by the second water inlet of described first water pump after temperature radiator, described electronic thermostat main valve State the first water pump.
In systemic circulation stream, and can determine as required to open warm braw loop, the i.e. the 3rd stream, institute Stating the 3rd stream is that coolant passes sequentially through described first water pump, described engine cooling water jacket and described warm braw Described first water pump is returned afterwards by the 3rd water inlet of described first water pump.
Now, ECT is gradually increasing, and the coolant in engine cooling water jacket is through starting The outlet of machine participates in cooling in entering high temperature heat sink.It addition, at water inlet of radiator position and cylinder Design first exhaust pipeline on lid water jacket, and on first exhaust pipeline, be provided with the first check valve 016 With first throttle valve 017;Can effectively discharge the gas produced in high temperature water route, it is to avoid cooling follows Producing cavitation erosion problem in ring water route, first exhaust pipeline completes through expansion tank, expansion tank pressure Lid is designed as 1.3Bar;High temperature water pipe is designed, to the first water pump at the first water pump water inlet locations Moisturizing, it is to avoid hypotony before the first water pump, produces cavitation.
When coolant temperature is between 97 degrees Celsius to 105 degrees Celsius, the auxiliary-valve of electronic thermostat While being in opening, the main valve of electronic thermostat is also at opening, now, and first Stream, second flow path, the 4th stream and the 5th stream exist simultaneously.
Described cold cycle cooling system, includes described expansion tank 001, low-temperature radiator 012, whirlpool Wheel supercharger the 014, second water pump, charge air cooler 015, Electron pressurizing unit 008 and BSG013;In the application In, the second water pump is electronic water pump 010.
Described expansion tank is connected with the water inlet of described second water pump;The outlet of described second water pump is respectively It is connected with the water inlet of the water inlet of described BSG, the water inlet of described charge air cooler and described turbocharger; The outlet of described charge air cooler is connected with the water inlet of described low-temperature radiator;The outlet of described BSG and institute The water inlet stating Electron pressurizing unit connects;The outlet of described turbocharger enters with described low-temperature radiator The mouth of a river connects;The outlet of described Electron pressurizing unit is connected with the water inlet of described low-temperature radiator;Described low The outlet of temperature radiator is connected with the water inlet of described second water pump.
It is connected between described expansion tank with described high temperature heat sink and described engine cooling water jacket and has One gas exhaust piping;It is connected between described expansion tank with described low-temperature radiator and has second exhaust pipeline;
Described first exhaust pipeline is provided with the first check valve 016 and first throttle valve 017;Described The second check valve 018 and second throttle 019 it is provided with on second exhaust pipeline.
Described cold cycle cooling system includes the 6th stream, the 7th stream and the 8th stream.
Described 6th stream be coolant from the outlet of described second water pump out after, pass sequentially through described in Described second water pump is returned again to after cooler and described low-temperature radiator.
Described 7th stream be coolant from the outlet of described second water pump out after, pass sequentially through described Described second water pump is returned after BSG, described Electron pressurizing unit and described low-temperature radiator.
Described 8th stream be coolant from the outlet of described second water pump out after, pass sequentially through described whirlpool Described second water pump is returned after wheel supercharger and described low-temperature radiator.
Cold cycle cooling system is for BSG, Electron pressurizing unit, turbocharger and charge air cooler Cooling, in low-temperature radiator, coolant is connected with Electron pressurizing unit by flowing through BSG after electronic water pump sucking-off Branch road connection again with turbocharger bypass and charge air cooler branch circuit parallel connection, temperature raise after coolant converge Entering low-temperature radiator.Meanwhile, low-temperature radiator is it addition, the coolant in expansion tank is by electricity Water pipe before sub-water pump sucks electronic water pump, and before preventing electronic water pump, hypotony produces cavitation erosion, Meanwhile, the coolant of the mixing bubble in low-temperature radiator upper water box is because of expansion tank and low temperature radiation The pressure differential of device upper water box is by the second throttle 019 on second exhaust pipeline and the second check valve 018 enters expansion tank.
Cold cycle cooling system has single low-temperature radiator, meets charge air cooler inflow temperature and controls The cooling requirement of less than 55 degrees Celsius;The electronic water pump that cold cycle coolant power resources ECU control, Meet low engine speeds, high load capacity or the electromotor BSG when carrying out thermal starting by BSG front end belt Radiating requirements with charge air cooler;The electronic water pump that cold cycle coolant power resources ECU control is full After foot engine cutoff, the delayed quench demand of turbocharger.
The high temperature circulation cooling system of the present invention runs alone with cold cycle cooling system, and both are the most not Intervene.
The above is only the description of the preferred embodiment of the present invention, it is noted that due to literal table The finiteness reached, and objectively there is unlimited concrete structure, for the common skill of the art For art personnel, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, These improvements and modifications also should be regarded as protection scope of the present invention.

Claims (9)

1. a double cooling recirculation system improved structure, it is characterised in that: include high temperature circulation cooling system System and cold cycle cooling system;
Described high temperature circulation cooling system include expansion tank, high temperature heat sink, engine cooling water jacket, First water pump, electronic thermostat, oil cooler and warm braw;
Described expansion tank is connected with the first water inlet of described first water pump;The outlet of described first water pump Water inlet with described engine cooling water jacket and described oil cooler is connected respectively;Described oil cooler Outlet connect water inlet and the auxiliary-valve of described electronic thermostat of described high temperature heat sink respectively;Described First outlet of engine cooling water jacket connects the water inlet of described high temperature heat sink and described electronics respectively The auxiliary-valve of thermostat;Second outlet of described engine cooling water jacket connects the water inlet of described warm braw; The outlet of described high temperature heat sink is connected with the main valve of described electronic thermostat;Described electronic thermostat The auxiliary-valve of main valve and described electronic thermostat all the second water inlets with described first water pump are connected;Described The outlet of warm braw is connected with the 3rd water inlet of described first water pump;
Described cold cycle cooling system, include described expansion tank, low-temperature radiator, turbocharger, Electron pressurizing unit, the second water pump, charge air cooler and BSG;
Described expansion tank is connected with the water inlet of described second water pump;The outlet of described second water pump is respectively It is connected with the water inlet of the water inlet of described BSG, the water inlet of described charge air cooler and described turbocharger; The outlet of described charge air cooler is connected with the water inlet of described low-temperature radiator;The outlet of described BSG and institute The water inlet stating Electron pressurizing unit connects;The outlet of described turbocharger enters with described low-temperature radiator The mouth of a river connects;The outlet of described Electron pressurizing unit is connected with the water inlet of described low-temperature radiator;Described low The outlet of temperature radiator is connected with the water inlet of described second water pump;
It is connected between described expansion tank with described high temperature heat sink and described engine cooling water jacket and has One gas exhaust piping;It is connected between described expansion tank with described low-temperature radiator and has second exhaust pipeline.
The most according to claim 1 pair of cooling recirculation system improved structure, it is characterised in that: described High temperature circulation cooling system includes systemic circulation cooling flowing path and partial circulating cooling flowing path;
Described systemic circulation cooling flowing path includes first flow path and second flow path;
Described first flow path is that coolant passes sequentially through described first water pump, described engine cooling water jacket, institute Returned by the second water inlet of described first water pump after stating high temperature heat sink, described electronic thermostat main valve To described first water pump;
Described second flow path is that coolant passes sequentially through described first water pump, described oil cooler, described height Institute is returned to by the second water inlet of described first water pump after temperature radiator, described electronic thermostat main valve State the first water pump;
Described partial circulating cooling flowing path includes the 4th stream and the 5th stream;
Described 4th stream is that coolant passes sequentially through described first water pump, described engine cooling water jacket, institute Described first water pump is returned by the second water inlet of described first water pump after stating the auxiliary-valve of electronic thermostat;
Described 5th stream is that coolant passes sequentially through described first water pump, described oil cooler and described electricity Described first water pump is returned by the second water inlet of described first water pump after the auxiliary-valve of sub-thermostat.
The most according to claim 2 pair of cooling recirculation system improved structure, it is characterised in that: described High temperature circulation cooling system also includes the 3rd stream;Described 3rd stream is that coolant passes sequentially through described Returned by the 3rd water inlet of described first water pump after one water pump, described engine cooling water jacket and described warm braw Return described first water pump.
The most according to claim 1 pair of cooling recirculation system improved structure, it is characterised in that: described Cold cycle cooling system includes the 6th stream, the 7th stream and the 8th stream;
Described 6th stream be coolant from the outlet of described second water pump out after, pass sequentially through described in Described second water pump is returned again to after cooler and described low-temperature radiator;
Described 7th stream be coolant from the outlet of described second water pump out after, pass sequentially through described Described second water pump is returned after BSG, described Electron pressurizing unit and described low-temperature radiator;
Described 8th stream be coolant from the outlet of described second water pump out after, pass sequentially through described whirlpool Described second water pump is returned after wheel supercharger and described low-temperature radiator.
The most according to claim 1 pair of cooling recirculation system improved structure, it is characterised in that: described Engine cooling water jacket includes cylinder body water jacket and cylinder cover water jacket.
The most according to claim 1 pair of cooling recirculation system improved structure, it is characterised in that: described First water pump is switching regulator mechanical water pump;Described second water pump is electronic water pump.
The most according to claim 1 pair of cooling recirculation system improved structure, it is characterised in that: in institute State and on first exhaust pipeline, be provided with the first check valve and first throttle valve;Described second exhaust pipeline sets It is equipped with the second check valve and second throttle.
The most according to claim 7 pair of cooling recirculation system improved structure, it is characterised in that: described First check valve and described first throttle valve arranged in series;Described first check valve is arranged at described expansion tank And between described first throttle valve.
The most according to claim 7 pair of cooling recirculation system improved structure, it is characterised in that: described Second check valve and described second throttle arranged in series;Described second check valve is arranged at described expansion tank And between described second throttle.
CN201610284893.6A 2016-04-27 2016-04-27 Double-cooling circulation system improvement structure Pending CN105888809A (en)

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