CN105927351A - Engine cooling system adopting delayed circulating flow path - Google Patents
Engine cooling system adopting delayed circulating flow path Download PDFInfo
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- CN105927351A CN105927351A CN201610281280.7A CN201610281280A CN105927351A CN 105927351 A CN105927351 A CN 105927351A CN 201610281280 A CN201610281280 A CN 201610281280A CN 105927351 A CN105927351 A CN 105927351A
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- cooling system
- coolant
- engine
- high temperature
- circulation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/20—Cooling circuits not specific to a single part of engine or machine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/02—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant
- B60H1/04—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant from cooling liquid of the plant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
- F01M5/002—Cooling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
- F01P7/165—Controlling of coolant flow the coolant being liquid by thermostatic control characterised by systems with two or more loops
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
- F02B29/04—Cooling of air intake supply
- F02B29/0406—Layout of the intake air cooling or coolant circuit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
- F01P2005/105—Using two or more pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2031/00—Fail safe
- F01P2031/30—Cooling after the engine is stopped
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2050/00—Applications
- F01P2050/22—Motor-cars
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2060/00—Cooling circuits using auxiliaries
- F01P2060/02—Intercooler
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2060/00—Cooling circuits using auxiliaries
- F01P2060/04—Lubricant cooler
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2060/00—Cooling circuits using auxiliaries
- F01P2060/12—Turbo charger
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
The invention relates to an engine cooling system adopting a delayed circulating flow path. The engine cooling system comprises a high-temperature circulating cooling system and a low-temperature circulating cooling system. The high-temperature circulating cooling system is provided with a large circulating cooling liquid flow path, a small circulating cooling liquid flow path and the delayed circulating cooling liquid flow path. An electrically-controlled auxiliary water pump is additionally arranged on the high-temperature circulating cooling system, delayed circulating is achieved, and therefore the heating requirement of all components generated after an engine shuts down can be met better, and the flow direction problem of cooling circulating between different components is solved.
Description
Technical field
The invention belongs to automobile cooling system field, specifically refer to a kind of engine using and postponing circulation stream
Cooling system.
Background technology
The oil consumption of engine 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 engine 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, is minimized by weak mixed and engine booster, 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 engine work, the heat that fuel oil burning produces is except acting, warm
Radiation, conducting outside waste gas is taken away, remaining is cooled down by cooling system.Whole cooling circulation point
One-tenth two states: thermostat closed mode and thermostat opening, and thus it is divided into systemic circulation and partial circulating.
Engine is in and just starts duty, and water temperature does not rises up, and now, thermostat is in cut out
State, engine is in partial circulating state；Along with water temperature gradually rises, the La Bao inside thermostat is heated swollen
Swollen, thermostat is gradually opened, and the loop of connection radiator is opened, and then enters systemic circulation.
Prior art disadvantageously, under the engine systemic circulation state of cooling, only one major loop.Along with
The continuous popularization of engines fuel-economizing technology, amount of parts integrated on engine gradually increases, as charge air cooler,
BSG, turbocharger, electronic water pump etc., these new integrated parts, need also exist for cooling down,
But, its required chilling temperature, flow and to control logical AND engine cylinder-body, cylinder cap completely different；
It addition, along with the application of start-stop technology, such as the HyBoost engine of the exploitation such as Ricardo Inc. have quickly
Start-stop function, to reduce engine consumption level, the simple switching regulator mechanical water pump that relies on cannot meet engine
Heating demands after shutdown, especially in temperature lower ground district, this defect is especially prominent.Therefore, pass
The Cooling System Control Circuit of system can not meet the application of new technology.
It addition, traditional mechanical type thermostat response is slowly, opens, close the water temperature decision by engine,
It is unfavorable for the warming-up of engine and the quick cooling of water temperature.
With water-cooled relatively, prior art there is also the air-cooled mode of employing to charge air cooler, BSG, turbine
Booster carries out the technical scheme cooled down, but this air cooling way space requirement is high, to whole enging cabin
Being disposed with high requirement, arrange that difficulty is big, thermal balance risk is big, can be only achieved reason it is generally required to be iteratively improved
Think effect.Additionally car load uses environment changeable so that air cooling system is difficult to meet the multiple each operating mode of use environment
Demand；It addition, along with the application of start-stop technology, mechanical water pump cannot meet the heating after engine is shut down
Demand, especially in temperature lower ground district, this defect is especially prominent.
To this end, existing engine-cooling system is proposed to improve by applicant, it is specifically shown in the earlier patents of applicant,
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 engine dual cycle cooling system with double expansion tank；In these existing skills
In art, applicant by existing engine cooling and circulating system by improve stream, be improved to high temperature and follow
Loop systems and low-temperature circulating system, and postpone the circulatory system, comprehensively improve engine and respectively need
The cooling effect of cooling-part, and such improvement technical scheme, compared with technical scheme compare,
Circulatory system cooling effectiveness whole to engine improves a lot；But at further research process
In, it has been found that the different coolings order between each parts that engine 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 to existing engine-cooling system, particularly solve
The cooling problem of hybrid power system+electronics engine with supercharger, passes through the technical program, it is possible to preferably fit
The heating requirement of each parts after answering engine to shut down, the flow direction solving to cool down between different parts circulation is asked
Topic, is particularly well-suited to such as Hyboost engine.
The present invention is achieved by the following technical solutions:
A kind of use the engine-cooling system postponing circulation stream, include high temperature circulation cooling system and low
Temperature circulating cooling system；Described high temperature circulation cooling system includes expansion tank, high temperature heat sink, cylinder body
Water jacket, cylinder cover water jacket, switching regulator mechanical water pump, electronic thermostat, oil cooler, automatically controlled auxiliary pump,
Electron pressurizing unit and warm braw；Described low-temperature circulating cooling system, includes described expansion tank, low temperature radiation
Device, electronic water pump, turbocharger, charge air cooler and BSG；In described low-temperature circulating cooling system, come
Being divided into two-way after the coolant in described low-temperature radiator is pumped out by described electronic water pump, wherein a road flows through
Described low-temperature radiator is returned to, after another road flows through described BSG, described charge air cooler after described turbocharger
Return to described low-temperature radiator；Described high temperature circulation cooling system has systemic circulation, partial circulating and delay circulation
Three kinds of coolant streams；Postponing in circulation described, described switching regulator mechanical water air pump inoperative, at described electricity
Under the driving of control auxiliary pump, come from the coolant of described cylinder cover water jacket flow through described automatically controlled auxiliary pump,
Entering described switching regulator mechanical water pump after described Electron pressurizing unit, described warm braw, then coolant is divided into three tunnels,
The first via returns to described cylinder cover water jacket after flowing through described oil cooler, after the second road flows through described cylinder body water jacket
Returning to described cylinder cover water jacket, the 3rd road returns to described cylinder cover water jacket after flowing through described electronic thermostat.
Preferably, described postponing in circulation, described electronic thermostat is in running order or off position；
When described electronic thermostat is in running order, the 3rd tunnel coolant flows through the main valve of described electronic thermostat
Described cylinder cover water jacket is returned to after door, described high temperature heat sink；
When described electronic thermostat is in off position, the 3rd tunnel coolant flows through described electronic thermostat
Auxiliary-valve after return to described cylinder cover water jacket and without described high temperature heat sink.
Preferably, in described systemic circulation, described automatically controlled auxiliary water air pump inoperative, described switching regulator mechanical water
Coolant in described high temperature heat sink is pumped into described by the main valve of described electronic thermostat by pump respectively
Oil cooler and described cylinder body water jacket, the coolant in described oil cooler returns to the heat radiation of described high temperature
Device, the coolant in described cylinder body water jacket is divided into two-way after flowing through described cylinder cover water jacket, and wherein a road returns to institute
Stating high temperature heat sink, an other road flows through described automatically controlled auxiliary pump, described Electron pressurizing unit, described warm braw
After return to described switching regulator mechanical water pump.
Preferably, in described partial circulating, described automatically controlled auxiliary water air pump inoperative, described cylinder cover water jacket, institute
State the coolant in oil cooler and enter described switching regulator mechanical water through the auxiliary-valve of described electronic thermostat
Pump, the coolant in described warm braw enters described switching regulator mechanical water pump, and described switching regulator mechanical water pump is by cold
But liquid pumps into described oil cooler and described cylinder body water jacket respectively, and the coolant in described cylinder body water jacket flows through
Being divided into two-way after described cylinder cover water jacket, a road returns to described electricity together with the coolant in described oil cooler
Sub-thermostat, another road enters described warm braw after flowing through described automatically controlled auxiliary pump, described Electron pressurizing unit.
Preferably, above-mentioned employing postpones the engine-cooling system of circulation stream and also includes water pipe, described
Expansion tank supplements coolant through described water pipe to described electronic water pump and described switching regulator mechanical water pump.
Preferably, above-mentioned employing postpones the engine-cooling system of circulation stream and also includes gas exhaust piping, described
Low-temperature radiator, described high temperature heat sink and described cylinder cover water jacket are through described gas exhaust piping and described expansion tank
Connection.
Preferably, on described gas exhaust piping, it is in series with between described low-temperature radiator and described expansion tank
Between check valve and choke valve, and/or described high temperature heat sink and described cylinder cover water jacket and described expansion tank
It is in series with check valve and choke valve.
Preferably, described low-temperature radiator connects described expansion from described high temperature heat sink by different entrances
Water tank.
The invention has the beneficial effects as follows:
Using in the engine-cooling system postponing circulation stream in the application, also increases in addition to large and small cycles
Postponing circulation, after engine is shut down, switching regulator mechanical water pump and electronic water pump all quit work, now electricity
Control auxiliary pump is opened, and automatically controlled auxiliary pump drives coolant to continue flowing and cools down Electron pressurizing unit,
Meeting the demand of Electron pressurizing unit delay chilling, then coolant flows through heater to driver's cabin continuation confession
Warm, coolant coolant temperature after Electron pressurizing unit improves, and i.e. improves the coolant of entrance warm braw
Temperature；Electron pressurizing unit increases with the pressure reduction at heater branch road two ends, and flow improves, and improves warm braw effect
Really.This programme can effectively complete the coupling work of engine-cooling system, makes car load thermal balance be in one
The best individual state, circuit design is reasonable；From the angle of car load heat management, significantly reduce and start
The oil consumption of machine.And in low-temperature circulating cooling system, in coolant flow direction, BSG and charge air cooler string
It is linked togather rear in parallel with turbocharger, it is possible to meet respective cooling requirement, and coolant leaving water temperature
The highest, make low-temperature circulating coolant temperature be held in less than 50 DEG C, Engine Inlet Temperature has been effectively ensured
And intake efficiency, be conducive to playing engine power performance, prevent pinking.
Further, in postponing circulation, by controlling the work of electronic thermostat and not working, be equivalent to
Achieving the large and small circulation postponed within circulation, more adapting to the cooling of different parts under different operating mode needs
Ask.
Further, low-temperature radiator gas exhaust piping, built with check valve and choke valve, prevents in high temperature circulation
When pressure is higher, high-temperature water adverse current enters low-temperature circulating, and additionally choke valve prevents the middle temperature of too much expansion tank
Spend higher coolant to participate in low-temperature circulating.
Further, electronic thermostat and switching regulator mechanical water pump with the use of, it is possible to realize rapid warming-up.
Further, low-temperature radiator connects expansion tank with high temperature heat sink by different entrances, it is possible to
Prevent the gas exhaust piping hypertonia of high temperature circulation cooling system from affecting the exhaust of low-temperature circulating cooling system.
Accompanying drawing explanation
Fig. 1 is the engine-cooling system frame using delay circulation stream of first embodiment of the present invention
Frame figure；
Fig. 2 is the engine-cooling system frame using delay circulation stream of second embodiment of the present invention
Frame figure.
Description of reference numerals
1 expansion tank, 2 low-temperature radiators, 3 BSG, 4 charge air coolers, 5 electronic water pumps, 6 joints
Stream valve, 7 check valves, 8 high temperature heat sink, 9 electronic thermostats, 10 switching regulator mechanical water pump, 11
Oil cooler, 12 cylinder body water jackets, 13 cylinder cover water jackets, 14 automatically controlled auxiliary pumps, 15 turbines increase
Depressor, 16 Electron pressurizing units, 17 warm braws, 18 check valves, 19 choke valves, 20 delivery ports.
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:(Bel t 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.
Electronic water pump: a kind of motor-driven water pump, uses piezoelectric to be used as power device, it is possible to achieve from
Control to driving electronization, use electronic integration system to control liquid transmission, it is achieved the adjustability of liquid transporting,
Accuracy.
High temperature heat sink: radiator is a part for automobile cooling system, mainly by intake chamber, water-supplying chamber,
The part assembly such as main leaf and radiator centre, Main Function is the high-temperature water in cooling engine water jacket, belongs to
High-temperature cooling circulates.
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, in Main Function is cooling engine intercooler, BSG
Water, belongs to sub-cooled circulation.
Expansion tank: the parts of a kind of automobile cooling system, Main Function is used to store coolant, and this is specially
Profit uses enclosed expansion tank, and the coolant in water tank also assists in the circulation of car load coolant, it addition, swelling water
Case also acts as the scavenging action to radiator and engine.
Electron pressurizing unit: a kind of air compressor, increases air inflow by compressed air, utilizes engine
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 turning of engine
Speed.
Charge air cooler: the auxiliary equipment of engine turbine supercharging, its role is to improve the scavenging efficiency of engine,
It it is the important set compound component of engine supercharging system.
Electronic thermostat: a kind of novel engine attemperating unit, in this system coolant temperature regulation, cold
But the work of the circulating cooling fan of liquid is determined and by control unit of engine control, phase by engine load
For traditional engine cooling apparatus, there is more preferable fuel economy and lower hydrocarbon emission.
Oil cooler: the thermantidote of a kind of engine, Main Function be used to cool down engine crankcase,
The engine heat generating components such as clutch, valve assembly.
In following description, as shown in Figures 1 and 2, high temperature circulation is represented with the solid line of band arrow
Systemic circulation coolant stream in cooling system and the coolant flow direction in low-temperature circulating cooling system, with
Dash line with arrow represents the partial circulating coolant flow direction in high temperature circulation cooling system, with band arrow
Tubular wire represent postpone circulation in coolant flow direction, represent low-temperature circulating with the chain-dotted line of band arrow
Water pipe coolant flow direction in cooling system and high temperature circulation cooling system, with the dotted line of band arrow
Represent the gas exhaust piping gas flow direction in low-temperature circulating cooling system and high temperature circulation cooling system.
With reference to Fig. 1, the delay that uses of first embodiment of the present invention circulates the engine-cooling system of stream,
Include high temperature circulation cooling system and low-temperature circulating cooling system.Low-temperature circulating cooling system, includes swollen
Swollen water tank 1, low-temperature radiator 2, electronic water pump 5, turbocharger 15, charge air cooler 4 and BSG3；High
Temperature circulating cooling system include expansion tank 1, high temperature heat sink 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, electronics
Booster 16 and warm braw 17.Although the high temperature circulation cooling system of the present embodiment and low-temperature circulating cooling system
Share expansion tank 1 as exhaust and water replanishing device, but the high temperature circulation cooling system of the present invention with
Low-temperature circulating cooling system runs alone, and each circulation has independent water pump and radiator, and both are the most not
Intervene, and after adding BSG3 and the parts such as turbocharger 15, Electron pressurizing unit 16,
The connection in series-parallel of pipeline, trend, tandem, the design of cooling logic just become extremely important, and
Complicated.The cooling logical design of this programme can effectively complete BSG3 and charge air cooler 4, turbocharging
Parts and engine cylinder-body, the different cooling requirements of cylinder cap such as device 15, Electron pressurizing unit 16.
Low-temperature circulating cooling system is for cooling down BSG3 and charge air cooler 4, turbocharger 15.At low temperature
In circulating cooling system, come from after the coolant of low-temperature radiator 2 is pumped out by electronic water pump 5 and be divided into two-way,
Wherein a road returns to low-temperature radiator 2 after flowing through turbocharger 15, and another road flows through BSG3, charge air cooler 4
After return to described low-temperature radiator, it is ensured that the cooling requirement of three, the position of BSG3 and charge air cooler 4 can
Exchange；In low-temperature circulating cooling system, the power of coolant comes from ECU (electronic control unit) control
The electronic water pump 5 of system, it is possible to meet low engine speeds, high load capacity or engine by BSG3 front end skin
Band carries out BSG3 and charge air cooler 4, the radiating requirements of turbocharger 15 during thermal starting, because it is said that in general,
BSG3 is less than charge air cooler 4 for the traffic demand of coolant, and charge air cooler 4 is less than for the demand of coolant rate
Turbocharger 15, it is useful for being connected with BSG3 by the charge air cooler 4 of low demand；Engine has been effectively ensured
Intake air temperature and intake efficiency, be conducive to playing engine power performance, prevent pinking.It addition, follow at low temperature
In ring cooling system, the coolant in expansion tank 1 passes through the water pipe in electronic water pump 5 front to electronic water
Pump 5 supplements coolant, it is possible to before preventing electronic water pump 5, hypotony produces cavitation erosion.It addition, low-temperature radiator
2 connect with expansion tank 1 through gas exhaust piping, and on gas exhaust piping, low-temperature radiator 2 and expansion tank 1
Between be in series with check valve 7 and choke valve 6, the coolant being mixed with bubble in low-temperature radiator 2 is due to swollen
Pressure differential between swollen water tank 1 and low-temperature radiator 2 and enter expansion tank by choke valve 6 and check valve 7.
High temperature circulation cooling system has systemic circulation, partial circulating and delay three kinds of coolant streams of circulation.Start
Machine delivery port 20 water temperature is higher than the first predetermined temperature, such as when 105 degrees Celsius, high temperature circulation cooling system
It is in systemic circulation state；Engine water outlet 20 water temperature is less than the second predetermined temperature, such as when 97 degrees Celsius,
High temperature circulation cooling system is in partial circulating state；Delivery port 20 water temperature is positioned at the first predetermined temperature and second
Between predetermined temperature, such as, when being less than 105 degrees Celsius higher than 97 degrees Celsius, large and small circulation is deposited simultaneously
?；After engine shutdown in the scheduled time, such as in 15 minutes, the delay circulation after engine is shut down is left
Beginning work.Can be different according to different engine model, predetermined temperature and the scheduled time.
After engine start, engine water outlet 20 water temperature is higher than the first predetermined temperature, and such as 105 is Celsius
When spending, the main valve of electronic thermostat 9 is opened, and auxiliary-valve is closed, and coolant enters systemic circulation state.?
In systemic circulation state, automatically controlled auxiliary pump 14 does not works, and now can be regarded as allowing coolant to pass through
Pipeline, switching regulator mechanical water pump 10 by the main valve of electronic thermostat 9 by high temperature heat sink 8
Coolant pumps into oil cooler 11 and cylinder body water jacket 12 respectively, the coolant warp in oil cooler 11
The delivery port 20 of engine returns to high temperature heat sink 8 and realizes circulation, and the coolant in cylinder body water jacket 12 flows through
Being divided into two-way after cylinder cover water jacket 13, wherein a road returns to high temperature heat sink 8 through delivery port 20 and realizes circulation,
An other road returns to switching regulator machine after flowing through automatically controlled auxiliary pump 14, Electron pressurizing unit 16, warm braw 17 successively
Tool water pump 10 realizes circulation.Automatically controlled auxiliary pump keeps not working before engine misses.In systemic circulation,
The coolant temperature that cylinder cover water jacket 13 flows out fully meets the coolant temperature requirement of Electron pressurizing unit 16, with
Time also improve the temperature of coolant and the flow entering warm braw 17, improve warm braw effect.
Engine water outlet 20 water temperature is less than the second predetermined temperature, such as when 97 degrees Celsius, electronic thermostat
The main valve of 9 is closed, and auxiliary-valve is opened, and high temperature circulation cooling system is in partial circulating state.At partial circulating
In, automatically controlled auxiliary pump 14 does not works, and the coolant of switching regulator mechanical water pump 10 comes from oil cooler
Backwater, the backwater of cylinder cover water jacket 13 and the backwater of warm braw 17 of 11.Wherein, cylinder cover water jacket 13, machine oil
Coolant in cooler 11 after delivery port 20 confluxes through the auxiliary-valve access switch formula of electronic thermostat 9
Mechanical water pump 10, the coolant in warm braw 17 is directly entered switching regulator mechanical water pump 10, switching regulator mechanical water
Coolant is pumped into oil cooler 11 and cylinder body water jacket 12, the cooling in cylinder body water jacket 12 by pump 10 respectively
Liquid flow is divided into two-way after cylinder cover water jacket 13, and a road returns to electricity together with the coolant in oil cooler 11
Before the auxiliary-valve of sub-thermostat 9 arrives switching regulator mechanical water pump 10, another road flow through automatically controlled auxiliary pump 14,
Entering warm braw 17 after Electron pressurizing unit 16, the coolant in warm braw 17 returns switching regulator mechanical water pump 10.
Before engine misses, automatically controlled auxiliary pump 14 does not works, and now can be considered 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 follow greatly
Ring, partial circulating coexist.
And after tail-off, switching regulator mechanical water pump 10 does not works, after the scheduled time, such as 15min,
Automatically controlled auxiliary pump 14 is powered start working by HyBoost system battery or other circuit, high temperature circulation
Cooling system enters and postpones circulation duty.In the delay of first shown in Fig. 1 embodiment circulates,
Electronic thermostat 9 is in running order, and electronic thermostat 9 heats by electrically heated rod, and main valve is opened, secondary
Valve closing, under the driving of automatically controlled auxiliary pump 14, from high temperature heat sink 8, oil cooler 11,
Coolant in cylinder cover water jacket 13 all converges to the cylinder cover water jacket 13 of head exhaust side, then cylinder cover water jacket 13
Coolant flow through and enter switching regulator mechanical water after automatically controlled auxiliary pump 14, Electron pressurizing unit 16, warm braw 17
Pump 10, coolant is divided into three tunnels after flowing out switching regulator mechanical water pump 10, and the first via flows through oil cooler 11
Returning to cylinder cover water jacket 13 by delivery port 20, the second road returns to cylinder cover water jacket 13 after flowing through cylinder body water jacket 12,
3rd road returns to cylinder head water through delivery port 20 after flowing through the main valve of electronic thermostat 9, high temperature heat sink 8
Set 13.
With reference to Fig. 2, unlike first embodiment in Fig. 1, implement second shown in Fig. 2
In example, in postponing circulation, electronic thermostat 9 is in off position, now the master of electronic thermostat 9
Valve closing, auxiliary-valve opens, and the 3rd tunnel coolant coming from switching regulator mechanical water pump 10 flows through electronics
After the auxiliary-valve of thermostat 9 directly through delivery port 20 return to cylinder cover water jacket 13 and without high temperature heat sink 8.
The effect postponing circulation in Fig. 1 and Fig. 2 is, after engine is shut down, and switching regulator mechanical water pump 10
All quitting work with electronic water pump 5, the most automatically controlled auxiliary pump 14 is opened, and automatically controlled auxiliary pump 14 drives
Coolant continues flowing and cools down Electron pressurizing unit 16, meets the need of Electron pressurizing unit 16 delay chilling
Asking, then coolant passes through warm braw 17 to driver's cabin continuation heating.Electron pressurizing unit 16 is arranged on warm braw
Before 17, the coolant temperature that cylinder cover water jacket 13 is gone out fully meets the coolant temperature of Electron pressurizing unit 16
Requirement, the coolant temperature through Electron pressurizing unit 16 improves simultaneously, i.e. improves and enters the cold of warm braw 17
But the temperature of liquid, improves capacity usage ratio and warm braw effect；Electron pressurizing unit 16 and warm braw 17 branch road two
The pressure reduction of end increases, and flow improves, and improves warm braw effect.Regardless of whether be in high temperature circulation cooling system
Systemic circulation, partial circulating and delay circulation, or the low-temperature circulating in low-temperature circulating cooling system, all can have
The coupling work completing engine-cooling system of effect, makes car load thermal balance be in a shape the best
State, circuit design is reasonable；From the angle of car load heat management, significantly reduce the oil consumption of engine.
And in postponing circulation, by controlling the work of electronic thermostat 9 and the two states that do not works, quite
In having separated again through the systemic circulation of high temperature heat sink 8 with without high temperature heat sink 8 in delay circulation inside
Partial circulating, more adapt to the cooling requirement of different parts under different operating mode.So, Electron pressurizing unit
16 can either at high temperature circulate, it is also possible to circulate at low temperatures.Therefore, this programme also can be considered right
A kind of new method that engine-cooling system is controlled.
Similar with the water pipe in low-temperature circulating cooling system, high temperature circulation cooling system there is also moisturizing
Pipeline, expansion tank 1 supplements coolant through water pipe to switching regulator mechanical water pump 10.
Similar with the gas exhaust piping in low-temperature circulating cooling system, high temperature circulation cooling system there is also exhaust
Pipeline, high temperature heat sink 8 connects 1 through gas exhaust piping with expansion tank with cylinder cover water jacket 13.And row
On air pipe, between high temperature heat sink 8 and cylinder cover water jacket 13 and expansion tank 1, it is in series with check valve 18
With choke valve 19.Low-temperature radiator 2 connects expansion tank 1 from high temperature heat sink 8 by different entrances
Realize exhaust, it is possible to prevent the gas exhaust piping hypertonia of high temperature circulation cooling system and to affect low-temperature circulating cold
But the exhaust of system.In two embodiments of the application, low-temperature circulating cooling system and high temperature circulation cooling
System all have employed and has been equipped with choke valve and check valve in water pipe, gas exhaust piping, and gas exhaust piping,
Actually low-temperature circulating cooling system or high temperature circulation cooling system also is able to be independently matched with water pipe, exhaust
Pipeline, check valve and choke valve.Advantage in the application is, low-temperature radiator gas exhaust piping is built with list
To valve 7 and choke valve 6, it is possible to when preventing that in high temperature circulation, pressure is higher, high-temperature water adverse current enters low-temperature circulating,
The coolant that during additionally choke valve 6 prevents too much expansion tank 1, temperature is higher participates in low-temperature circulating
In.And electronic thermostat 9 and switching regulator mechanical water pump 10 with the use of, it is possible to realize rapid warming-up.
Turbocharger 15 is positioned in low-temperature circulating cooling system, and Electron pressurizing unit 16 is positioned at high temperature circulation
In cooling system and participate in postpone circulation, so can adapt to the cooling requirement that both are different.
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 (8)
1. one kind uses the engine-cooling system postponing circulation stream, it is characterised in that: include high temperature
Circulating cooling system and low-temperature circulating cooling system；
Described high temperature circulation cooling system includes expansion tank, high temperature heat sink, cylinder body water jacket, cylinder head water
Set, switching regulator mechanical water pump, electronic thermostat, oil cooler, automatically controlled auxiliary pump, Electron pressurizing unit
And warm braw；
Described low-temperature circulating cooling system, include described expansion tank, low-temperature radiator, electronic water pump,
Turbocharger, charge air cooler and BSG；
In described low-temperature circulating cooling system, come from the coolant of described low-temperature radiator by described electronics
Water pump is divided into two-way after pumping out, and wherein a road returns to described low-temperature radiator after flowing through described turbocharger,
Another road returns to described low-temperature radiator after flowing through described BSG, described charge air cooler；
Described high temperature circulation cooling system has systemic circulation, partial circulating and delay three kinds of coolant streams of circulation；
Postponing in circulation described, described switching regulator mechanical water air pump inoperative, at described automatically controlled auxiliary pump
Under driving, the coolant coming from described cylinder cover water jacket flows through described automatically controlled auxiliary pump, described electronics supercharging
Entering described switching regulator mechanical water pump after device, described warm braw, then coolant is divided into three tunnels, and the first via flows through
Returning to described cylinder cover water jacket after described oil cooler, the second road returns to described cylinder after flowing through described cylinder body water jacket
Lid water jacket, the 3rd road returns to described cylinder cover water jacket after flowing through described electronic thermostat.
The engine-cooling system using delay circulation stream the most according to claim 1, its feature
Being: described postpone in circulation, described electronic thermostat is in running order or off position；
When described electronic thermostat is in running order, the 3rd tunnel coolant flows through described electronic thermostat
Described cylinder cover water jacket is returned to after main valve, described high temperature heat sink；
When described electronic thermostat is in off position, the 3rd tunnel coolant flows through described electronic thermostat
Auxiliary-valve after return to described cylinder cover water jacket and without described high temperature heat sink.
The engine-cooling system using delay circulation stream the most according to claim 1 and 2, its
It is characterised by:
In described systemic circulation, described automatically controlled auxiliary water air pump inoperative, described switching regulator mechanical water pump passes through institute
Coolant in described high temperature heat sink is pumped into the cooling of described machine oil by main valve respectively that state electronic thermostat
Device and described cylinder body water jacket, the coolant in described oil cooler returns to described high temperature heat sink, described cylinder
Coolant in body water jacket is divided into two-way after flowing through described cylinder cover water jacket, and wherein a road returns to the heat radiation of described high temperature
Device, an other road returns to described after flowing through described automatically controlled auxiliary pump, described Electron pressurizing unit, described warm braw
Switching regulator mechanical water pump.
The engine-cooling system using delay circulation stream the most according to claim 1 and 2, its
It is characterised by:
In described partial circulating, described automatically controlled auxiliary water air pump inoperative, described cylinder cover water jacket, described machine oil are cold
But the coolant in device enters described switching regulator mechanical water pump through the auxiliary-valve of described electronic thermostat, described warm
Coolant in wind enters described switching regulator mechanical water pump, and described switching regulator mechanical water pump is by coolant pump respectively
Entering described oil cooler and described cylinder body water jacket, the coolant in described cylinder body water jacket flows through described cylinder head water
Being divided into two-way after set, a road returns to described electronic thermostat together with the coolant in described oil cooler,
Another road enters described warm braw after flowing through described automatically controlled auxiliary pump, described Electron pressurizing unit.
The engine-cooling system using delay circulation stream the most according to claim 1 and 2, its
Be characterised by: also include water pipe, described expansion tank through described water pipe to described electronic water pump and
Described switching regulator mechanical water pump supplements coolant.
The engine-cooling system using delay circulation stream the most according to claim 1 and 2, its
It is characterised by: also include gas exhaust piping, described low-temperature radiator, described high temperature heat sink and described cylinder head water
Set connects with described expansion tank through described gas exhaust piping.
The engine-cooling system using delay circulation stream the most according to claim 6, its feature
It is: on described gas exhaust piping, between described low-temperature radiator and described expansion tank, is in series with check valve
And be in series with between choke valve, and/or described high temperature heat sink and described cylinder cover water jacket and described expansion tank
Check valve and choke valve.
The engine-cooling system using delay circulation stream the most according to claim 6, its feature
It is: described low-temperature radiator connects described expansion tank from described high temperature heat sink by different entrances.
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| CN201610281280.7A CN105927351A (en) | 2016-04-27 | 2016-04-27 | Engine cooling system adopting delayed circulating flow path |
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Address after: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Applicant after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Applicant before: Anhui Jianghuai Automotive Co., Ltd. |
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Application publication date: 20160907 |