CN104675504B - Cooling system for hybrid vehicle and adjusting method thereof - Google Patents
Cooling system for hybrid vehicle and adjusting method thereof Download PDFInfo
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- CN104675504B CN104675504B CN201410693560.XA CN201410693560A CN104675504B CN 104675504 B CN104675504 B CN 104675504B CN 201410693560 A CN201410693560 A CN 201410693560A CN 104675504 B CN104675504 B CN 104675504B
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- 238000001816 cooling Methods 0.000 title claims abstract description 115
- 238000000034 method Methods 0.000 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 81
- 239000000498 cooling water Substances 0.000 claims abstract description 18
- 238000002485 combustion reaction Methods 0.000 claims description 62
- 230000005520 electrodynamics Effects 0.000 claims description 23
- 230000005611 electricity Effects 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 11
- 239000002918 waste heat Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 9
- 238000013461 design Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000009347 mechanical transmission Effects 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 235000019628 coolness Nutrition 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000009711 regulatory function Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K11/00—Arrangement in connection with cooling of propulsion units
- B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
- B60K2001/006—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric motors
-
- 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
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
- F01P5/12—Pump-driving arrangements
- F01P2005/125—Driving auxiliary pumps electrically
-
- 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
- F01P2025/00—Measuring
- F01P2025/08—Temperature
- F01P2025/40—Oil temperature
-
- 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
- F01P2050/24—Hybrid vehicles
-
- 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
- F01P2060/045—Lubricant cooler for transmissions
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Transportation (AREA)
- Hybrid Electric Vehicles (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- General Details Of Gearings (AREA)
Abstract
The present invention relates to a cooling system for a hybrid vehicle and having an oil circuit (11) and a water cooling circuit (5), wherein the oil circuit (11) is used for adjusting the heat of a transmission (10) and a motor. Surplus heat (Qe) is tranfrrred to the water cooling circuit (5) from the oil circuit (11) through a heat exchanger (14), and the waste heat of an internal combuistion engine (2) passes the water cooling circuit (5) and is adjusted by a temperature adjusting device (8), and is discharged to an environment when a main water cooling device (6) is being used. The invention further relates to a method for adjusting the cooling system. In order to solve the target conflicts between the settings of optimal temperatures of a transmission and a motor, a method for adjusting the cooling system (1) used by the hydrbid vehicle driving device is proposed. In the water cooling circuit (5), when an electric pump (17) which is adjusted by the current temperature (T) of the oil circuit (11) is being used, the cooling water, after leaving a water side (15) of the heat exchanger (14), on the one hand, is introduced to the front of temperature adjusting device (8) through a branch circuit (24) having a throttle valve at a branching point (21); and on the other hand, in the water cooling circuit (5), when a bypass branch circuit (22) is being used, the cooling water is introduced to the position behind the internal combuistion engine (2).
Description
Technical field
The present invention relates to a kind of cooling system of motor vehicle driven by mixed power, the motor vehicle driven by mixed power is with least one drive
Galvanic electricity machine and at least one internal combustion engine.The invention further relates to a kind of method for adjusting this cooling system.
Background technology
By EP0966627B1 there is known it is a kind of for internal combustion engine of motor vehicle, the motor that is integrated in actuating device and
The control of the motor.A kind of drive train is the document discloses, wherein motor is arranged in the gear of vehicle in an integrated manner
In and optionally be used as internal combustion engine start motor or the electromotor for the power supply for onboard power system.In the cooling of the motor
Aspect, guarantees the fluid cooling of motor by being connected to the Water-cooling circulating loop of internal combustion engine.Alternatively refer to by means of outside
The cooling fan that portion is arranged carries out air cooling.
A kind of cooling system of the power train of motor vehicle driven by mixed power there is known by WO2012/092402A2.The cooling system
It is designed as uniquely closing cooling circuit, the closure cooling circuit is used to cool down internal combustion engine.Electrodynamic pump and machinery drive
Dynamic pump causes coolant to circulate.The electric part of hybrid drive, such as motor, inverter or coupling device can be selected
Property ground by means of valve load or depart from internal combustion engine cooling circuit.
DE102010004903A1 discloses a kind of cooling system, and wherein internal combustion engine is assigned to primary cooling closed circuit
Or main cooling circuit.Hybrid power component, such as motor or inverter are associated with secondary drive device, wherein, it is secondary
Level driving means are provided with cooling circuit individually, unrelated with main cooling circuit.
The content of the invention
The task of the present invention is, there is provided a kind of cooling system for motor vehicle driven by mixed power, the motor vehicle driven by mixed power have
Have internal combustion engine, variator and motor, wherein exist related to the running temperature of motor and variator, contrary efficiency characteristic it
Between, the goal conflict of subsequently description.Additionally, the cooling system should simple structure and can reliably by means of little expense
Operation.Additionally, the task of the present invention is also resided in, according to each drive component-such as variator and/or motor or motor with
And internal combustion engine-load so described each drive component is cooled down so that provide motor most for driver as far as possible
The maximal efficiency of big electrical power and/or variator and further offer maximum power/dynamic trait are for using.
It is that the running temperature of motor is lower according to the goal conflict that the present invention is to be solved, then which tends to higher
Efficiency.Conversely, mechanical transmission, such as fully-automatic gearbox or speed-changing gear box have the property that, wherein its with
The reduction of running temperature with the efficiency for reducing.This is because, as oil more sticky at a lower temperature is in variator
In occur in that higher friction loss.Conversely, the efficiency of motor is reduced as temperature is raised.Especially because its overheated danger
The so-called load shedding or Power Limitation of motor occurs at too high a temperature.However, when running temperature is higher, that is to say, that
For diluter transmission oil, mechanical transmission potential higher efficiency as less friction loss has.
Particularly with following situations：During motor is integrally disposed at variator and jointly by means of transmission oil, for example
The so-called automatic transmission fluid cooling of ATF is abbreviated as, then this goal conflict between different efficiency characteristics becomes apparent from.
First and second cooling circuits are included by cooling system known in the art.In the first cooling circuit
In at least provided with motor and variator as component to be cooled.Additionally, which provided circulating pump, the circulating pump by means of
Transmission oil, such as ATF cool down the component to be cooled.Also use in first cooling circuit form for liquid-
Liquid-heat exchanger, so-called ATF coolers/radiator.ATF coolers have oily side, and the oily side is connected to the first cooling circulation
On loop.Additionally, ATF coolers have water side, the water side is arranged in the second cooling circuit, and second cooling is looped back
Road defines the main cooling circuit of internal combustion engine.By ATF heat exchangers the heat transfer of motor and/or variator to internal combustion
The water-flow circuit of machine (or being abbreviated as VKM), while the two cooling circuits are not connected directly to one another.For ATF coolers
Water side has arranged electrodynamic pump and the pump with VKM mechanical couplings.In order to adjust the average criterion temperature in the first cooling circuit
Degree, is provided with flexible pipe thermoregulator in the second cooling circuit.With regard to above-mentioned prior art refer to the attached drawing 2.
It is in the cooling system of this two loop, (cold comprising motor and variator in other words to the first cooling circuit
But closed circuit) for for the cooling power that uses with the average criterion temperature that adjusted by means of flexible pipe thermoregulator to be oriented to.Cause
This, the target temperature is presented as compromise between the optimal running temperature for variator and for motor.Therefore, because with
Described goal conflict not always can reach the optimum efficiency of variator and motor simultaneously afterwards.For example, in vehicle absolutely
Internal combustion engine operation in, the temperature of variator is not most preferably high, so as to undesirable efficiency is occurred in that in mechanical transmission
Loss.In 100% running operation based on electric driver, largely limit for the situation for subscribing target temperature
The power of motor, because for this operation, be that the predetermined target temperature of thermoregulator is often too high, and motor is due to this
High temperature levels are rapidly reached the maximum allowable wasted power or be absorbed in so-called load shedding which depends on the temperature levels.
Another has the disadvantage：Passed by oil return line according to the used heat by method known in the art, motor and variator
It is handed to the cooling water of internal combustion engine.Cooling water return flow through internal combustion engine unevenly may heat/cool down internal combustion engine.Because
The uneven heating can not fully be detected by the temperature sensor installed within the engine, it is possible that in some situations
Under cause starting and/or the injection strategy of wrong choice.
Furthermore it is known that cooling circuit be largely dependent in terms of its heat radiation power, whether internal combustion engine runs or closes
Close, as this in hybrid drive be just once in a while may be with expectation as.
According to the present invention, so solve aforesaid to set up while enough heat radiation powers are provided at any time for cooling circuit
For the task of the goal conflict between the optimum temperature of variator, motor and internal combustion engine：Working as in using by oil return line
In the case of front thermoregulator electrodynamic pump, cooling water is after the water side for leaving heat exchanger on the one hand by section at branch point
It is directed in the case of using bypass branch in water cooling loop before stream valve is directed to thermoregulator and on the other hand
The exit of the chiller to internal combustion engine or in internal combustion engine.
For example, due to having used adjusted electrodynamic pump, the flexible pipe thermoregulator for using before becomes unnecessary, which reduces
The quantity of different components in chilled(cooling) water return (CWR).When internal combustion engine cuts out, cooling water passes through water side of the electrodynamic pump from heat exchanger now
Flow out, while approximately in main water cooler not being pumped through and cooling down in the loop.In order to newly create relative to using
Bypass branch for keep little this effect, choke valve, and the second branch road or bypass branch are included in the tie point
Do not have choke valve and and then be cooled in the adjustable major part of cooling water in main water cooler, so as to subsequently through electrodynamic pump
The loss heat from oil return line can be absorbed afterwards again through heat exchanger.According to prior art, this maintenance is as required
Cooling is impossible when internal combustion engine cuts out from oil return line discharge loss heat.
According to a kind of particularly advantageous improvement project, the one-way valve used in the new bypass branch in water cooling loop or only
Valve is returned, the one-way valve or check-valves only allow the flow direction of the outlet of the chiller of the water side to internal combustion engine from heat exchanger.
The fact that this improvement project is considered：Related to this, and the conveying power of pump that couples of combustion engine mechanical and conveying body
Product is significantly greater than the conveying power and delivered volume of electrodynamic pump.When internal combustion engine is connected, such as in hybrid drive
In mixed running, the mechanical pump of internal combustion engine is taken out towards main water cooler from the branch road with choke valve via thermoregulator and internal combustion engine
Inhale heated water.Meanwhile, the check-valves in the new bypass branch in water cooling loop are prevented can by the cooling water of heat intensive
To bypass the water side that main water cooler directly reaches heat exchanger from internal combustion engine.
Additionally, the task is also completed by the device being used for motor vehicle driven by mixed power, form is cooling system, wherein, press
Regulation is by the electrodynamic pump in the temperature adjustment water-flow circuit in oil return line, and is provided with branch point in the water side of heat exchanger,
At branch point, on the one hand the branch road with choke valve is connected between electrodynamic pump and thermoregulator, and another aspect bypass branch connects
After the outlet of the chiller for being connected on internal combustion engine or locate.
In preferred embodiments, bypass branch has one-way valve or check-valves, and the one-way valve or check-valves are only allowed
From the flowing of the outlet of the chiller of the water side to internal combustion engine of heat exchanger.
For above-mentioned motor vehicle driven by mixed power, also achieve fully in the running status of internal combustion engine reduce or closing
Discharge the loss heat of the oil return line from hybrid drive.Therefore, except the change in pure driving by internal combustion engine
Outside cooling of the fast device cooling together with the motor to being run in electromotor mode and affiliated power electric device, also meet
By the combination drive and the pure driving by motor of internal combustion engine and opening motor.
Advantageously, the driving means for being integrated with variator are used as electric driver, so as to only need compact structure
There is optimal temperature in unit insertion oil return line and while sufficiently heat radiation power at any time is provided.
Description of the drawings
Below with reference to embodiments of the invention further describe with reference to the accompanying drawings embodiment of the invention with it is known
Further feature and advantage that cooling system is compared.Wherein illustrated with schematic diagram：
Fig. 1 is the block diagram of embodiments of the invention；
Fig. 2 be analogous to Fig. 1, by the view of cooling system known in the art；
Fig. 3 a are the block diagrams when internal combustion engine is turned off according to Fig. 1, which depict flow path, and
Fig. 3 b are the block diagrams when internal combustion engine is opened according to Fig. 1, which depict flow path.
Specific embodiment
Ignore different accompanying drawings, use identical reference for identical element all the time.
The block diagram of Fig. 2 illustrates that by cooling system 1 known in the art which is initially designed to drive by internal combustion engine 2
Vehicle.The vehicle expands to so-called plug-in hybrid vehicle (Plug-in- by adding motor 3 now
Hybrid).However, because here remains the basic structure of cooling system, being driven by the only vehicle with internal combustion engine 2 below
The chiller of dynamic device sets out and describes the structure：
It is located at together with internal combustion engine 2 and the pump 4 that couples with the combustion engine mechanical in water cooling loop 5, the water cooling loop leads to
Cross main water cooler 6 excessive heat energy is expelled in environment from water cooling loop 5.In water cooling loop 5, by thermoregulator
8 so control bypasses 7, i.e., in the case where internal combustion engine 2 is still supercool or cooling of internal combustion engine 2 for other reasons is unnecessary,
So closed/connected via bypass 7 by thermoregulator 8 by the water cooling loop 5 that water-circulating pump 4 drives so that main water cooler 6
Near short circuit and no heat is expelled in environment.Such case is drawn a circle by the point in Fig. 2 and is illustrated.On the contrary, if it is necessary to
Cooling internal combustion engine 2, then the closing of thermoregulator 8 bypass 7, then obtain along with the circulation by the radiating of main water cooler 6, as passing through
As dotted line circle larger in Fig. 2 is illustrated.
In this embodiment, in order to cool down variator 10, in the case of using automated transmission for vehicles 10,
It is referred to as automatic transmission fluid used in oil cooling closed circuit -- it is abbreviated as the dedicated transmission oil of ATF, the dedicated transmission
The hydraulic function that therefore oil be both used for controlling inside variator 10 is also used for lubricating and cooling down variator 10.For this purpose, in oil cooling
Oil pump 12 is provided with closed circuit 11, which is so coupled with variator 10, i.e. the oil pump is provided for cooling down variator 10
, both depending on power also depended on rotating speed oil conveying power.Here, when transmission oil temperature is higher than 90 DEG C, variator
10 generally have the high efficiency for being worth pursuing.In order to the heat of surplus is discharged from oil cooling closed circuit 11, the oil cooling is circulated
Loop is closed by the oily side 13 of ATF coolers 14.In ATF coolers 14, heat is transmitted to water cooling by water side 15 and is returned
In the branch road 16 on road 5, wherein, the branch road 16 has bridged thermoregulator 8.Because the radiating efficiency of the water branch road 16 should be used for exporting
From the superfluous heat of oil cooling closed circuit 11, so which is independently passed through with the pump power of the water pump 4 coupled with internal combustion engine 2
Single, electrically driven (operated) pump 17 at the inflow of the water side 15 of ATF coolers 14 is reacted at the outflow of water side 15
The ameliorating effect of flexible pipe thermoregulator 18 is supplied cooling water from main water cooler 6.Flexible pipe thermoregulator 18 almost can be prevented completely
The branch road 16 of water loop 5, so as to the cooling water flowed out by the water side 15 of ATF coolers 14 almost has the ATF of oil return line 11 oily
Temperature.With more than the maximum temperature set in flexible pipe thermoregulator 18 for the oil in oil circulation loop 11, flexible pipe homoiothermic
Device 18 disconnects, and so as in the case where being conveyed by unregulated electrodynamic pump 17, the heat from ATF coolers 14 can be with
Main water cooler 6 is expelled to by water loop 5.
As described above, the cooling system 1 is used to form the motor 3 of plug-in hybrid driving device by addition now
And be expanded.The motor 3 is by the integrated (as being considered merely as the special of the so-called motor for being integrated with variator of save space
Situation) and variator 10 form a construction unit together, the construction unit correspondingly also only can be followed commonly by oil cooling
The ATF oil of loop back path 11 is cooled down via ATF coolers 14.However, variator 10 just reach in greater than about 90 DEG C of oil temperature it is worth
The high efficiency of pursuit, and motor 3 passes through oilcan when oil temperature is less than 70 DEG CIn and at winding head
Good cooling there is high efficiency.From the beginning of the ultimate value of the fixation of winding or magnet temperature, motor 3 is in so-called load shedding curve
In the range of run.In order to approximately equitably balance at the oil circulation loop 11 of motor 3 and in the oil of variator 10
Contrary temperature requirement at loop, being set in flexible pipe thermoregulator 18 in above-mentioned cooling system 1 according to prior art is used for
The compromise temperature of the oil in oil circulation loop 11.By the loss in terms of this compromise efficiency for receiving variator 10 and motor 3.
Fig. 1 illustrates the block diagram with Fig. 2 similar, embodiment of the present invention of diagram.Different from the block diagram of Fig. 2 are,
No longer there is flexible pipe thermoregulator 18 in being in water cooling closed circuit 5 in this.Temperature T here in oil cooling closed circuit 11 is direct
By the measurement point detection not shown further inside variator 10, detect alternately through the measurement point at motor 3.Temperature
T is transfused in control device 19.By the initial value of oil cooling loop temperature T, determine for water in control device 19
The control signal 20 of the electrodynamic pump 17 in loop 5, wherein, pump 17 is now configured to adjusted pump.Shown according to the block diagram with reference to Fig. 1
The new design for going out, the cooling of motor 3 and variator 10 are no longer controlled by flexible pipe thermoregulator 18, therefore eliminate this
Road.But, as required based on the detection of thermoregulator 8, internal combustion engine 2 the temperature via water cooling loop 5 and by oil cooling
But the cooling is carried out in the case of regulatory function of the temperature in closed circuit 11 in using control device 19.
Control device 19 is not extra component, but a kind of structure existed in modern driving mechanism of motor vehicle
Part or circuit.The feature of the component is only extended correspondingly.Because transmitting corresponding running status to control device 19, i.e.,
Only driven by motor 3, only driven or mixed running by internal combustion engine 2, so most preferably using around the cold of each component
But so can be run according to the load for existing on the basis of closed circuit as required, i.e., except being used to add for driver
The maximum power of hybrid drive can also be provided outside the maximum electric power of speed or the charging for being also used for on-vehicle battery
For using.Because the electrically driven (operated) pump 17 only when needed in the branch road 16 in water cooling loop 5 just works, obtain following
Advantage：
- in cold operation, pump 17 is approximately turned off and therefore with respect to not needing energy for the old design of Fig. 2 at all
Amount.
- on the contrary in other cases, replace the pump for consistently running based on same rotational speed, here to manipulate described as required
Pump, this equally saves electric energy.
Because control device 19 has generally been present, and is only appointed by the aforementioned extra input parameter and extra regulation
It is engaged in extraly being loaded by a small margin, so compared with known design, by realizing embodiments of the invention due to less
Integrally only there is relatively small hardware cost in complexity, it is particularly pointed out that eliminating flexible pipe thermoregulator 18.
Even if sufficiently cool in order to can also ensure that when internal combustion engine 2 is turned off, in the implementation of figure 1, along cooling water
Flow direction see that after the water side 15 of heat exchanger 14 be provided with branch point 21, from the branch point, bypass branch 22 connects
After the outlet of the unshowned chiller for being connected on internal combustion engine 2 or exit.The feelings that internal combustion engine 2 cuts out are shown in fig. 3 a
Condition.For clarity, here only still with dotted line illustrate it is inoperative, with thermoregulator 8, mechanical pump 4 and internal combustion engine 2
Minor loop.When being driven by electrodynamic pump 17, in order to discharge superfluous heat Qe, cooling water is in big loop I from oil return line 11
It is directed to main water cooler 6 and is back to electrodynamic pump 17 therefrom through the internal combustion engine 2 closed by bypass branch 22.
When ruuning situation when internal combustion engine 2 is connected is described with reference to Fig. 3 b, other elements of the cooling circuit of Fig. 1 and 3a become
Must be appreciated that.For the superfluous heat Q from oil return line 11 is discharged via main water cooler 6 by bypass branch 22e,
The big closed circuit I that point-draw-line is drawn is driven basically by electrodynamic pump 17 again.In order to discharge the useless of the surplus of internal combustion engine 2
Heat, another loop II are closed via main water cooler 6 by thermoregulator 8, wherein, in the feelings that bypass 7 is manipulated via thermoregulator 8
Keep constant above for the heating function described in Fig. 2 under condition.In view of relative to electrodynamic pump 17, it is mechanical with internal combustion engine 2
The significantly greater delivered volume of the pump 4 for coupling, here must be prevented from, and pass through bypass branch by the cooling water that internal combustion engine 2 is heated
22 are pressed back into the bifurcation 21 at the water side 15 of heat exchanger 14.Therefore, check-valves 23, the non-return are provided with bypass branch 22
Valve only allows the flow direction of the water side 15 to main water cooler 6 from heat exchanger 14.
In order to during temperature in regulating loop II also it is contemplated that the used heat Q of oil return lineeEffect, in the I of loop,
Branch road 24 is drawn at branch point 21, and before leading to thermoregulator 8 in the II of loop.The pump 4 of internal combustion engine 2 passes through 24 He of branch road
Thermoregulator 8 aspirates cooling water.For the restriction in terms of this set amount, choke valve 25 is provided with branch road 24.
According to Fig. 3 a, when internal combustion engine 2 is turned off, the choke valve 25 of branch road 24 equally plays a part of the restriction to measuring：It is logical
The closed circuit that branch road 24 defines the cooling water without cooling via the water side 15 of electrodynamic pump 17 and heat exchanger 14 is crossed, and is returned greatly
Road I can be expelled to superfluous heat in air by main cooling water cooler 6.Here, to the choke valve 25 in branch road 24
Intervened again, to keep the little share of the cooling water without cooling.
Therefore, in the case where very little is changed, in order to most preferably use the plug-in hybrid in motor vehicles to drive dress
Put and being integrated in variator 10 and in oil cooled motor 3 in order to be used in, by aforementioned new design,
In the case where aforementioned advantages are realized, further improve known per se and also passing through test and proof in use twice
The cooling system structure on road.
Reference numerals list
1 cooling system
2 internal combustion engines
3 motors
4 pumps
5 water cooling loops
6 main water coolers
7 bypasses
8 thermoregulators
10 variators
11 oil cooling closed circuits
12 oil pumps
The oily side of 13 heat exchangers 14
14 ATF coolers/heat exchanger
The water side of 15 heat exchangers 14
The branch road of 16 water loops
The electrodynamic pump of 17 water branch roads
18 flexible pipe thermoregulators
19 control devices
Control signal in the branch road 16 of 20 water loops 5 at adjusted electrodynamic pump 17
21 branch points
22 bypass branch
23 check-valves
24 branch roads
25 choke valves
QeSuperfluous heat
Temperature in the oil circulation loops of T 11
Big loop in I water coolings loop 5
Minor loop in II water coolings loop 5
Claims (8)
1. a kind of method of the cooling system (1) for adjusting drive device for hybrid vehicle, the cooling system have oil
Loop (11) and water cooling loop (5), wherein, oil return line (11) for adjusting the heat of variator (10) and motor (3),
Superfluous heat (Qe) be transferred in water cooling loop (5) from oil return line (11) by heat exchanger (14), and internal combustion engine (2)
Used heat is also passed through the water cooling loop (5) and is adjusted by thermoregulator (8) and be discharged in the case of using main water cooler (6)
To in environment, it is characterised in that using it is being adjusted by the Current Temperatures (T) in oil return line (11), in water cooling loop (5)
Electrodynamic pump (17) in the case of, cooling water after the water side (15) for leaving heat exchanger (14) at branch point (21) place on the one hand
Before thermoregulator (8) is directed into by the branch road with choke valve (25) (24) and on the other hand using water cooling loop
(5) after being directed into internal combustion engine (2) in the case of the bypass branch (22) in.
2. the method according to aforementioned claim, it is characterised in that make in the bypass branch (22) of water cooling loop (5)
With check-valves (23).
3. according to method in any one of the preceding claims wherein, it is characterised in that in the situation using control device (20)
The electrodynamic pump in water cooling loop (5) is adjusted down based on the temperature value determined in variator (10) or in motor (3)
(17)。
4. method according to claim 1 and 2, it is characterised in that using being integrated with the driving means of variator as drive
Galvanic electricity machine (3).
5. a kind of cooling system of motor vehicle driven by mixed power, the cooling system have oil return line (11) and water cooling loop (5), institute
Motor vehicle driven by mixed power is stated with least one motor (3), variator (10) and at least one internal combustion engine (2), wherein, drive
Motor (3) and variator (10) are arranged in the oil return line (11) of closure, and the oil return line passes through heat exchanger (14) and water loop
(5) branch road (16) is coupled for the superfluous heat (Q of transmissione), and water cooling loop (5) are designed for also internal combustion engine
(2) heat is discharged in environment by main water cooler (6), wherein, cooling system (1) is so designed that for implementing according to front
State the method any one of claim, i.e. according to the rules by the temperature adjustment water cooling loop in oil return line (11)
(5) electrodynamic pump (17) in and branch point (21) is provided with water side (15) place of heat exchanger (14), go out from branch point (21)
Send out, the branch road (24) on the one hand with choke valve (25) is connected between electrodynamic pump (17) and thermoregulator (8), it is on the other hand, other
After road branch road (22) is connected to the outlet of the chiller of internal combustion engine (2) or the exit.
6. cooling system according to claim 5, it is characterised in that bypass branch (22) includes check-valves (23), should be only
Return valve only allow the water side (15) to internal combustion engine (2) from heat exchanger (14) chiller outlet flowing.
7. the cooling system according to claim 5 or 6, it is characterised in that variator (10) and/or motor (3) set
Count for determining the temperature value in oil return line (11) and be connected with control device (19) to transmit temperature value (T), the control
Electrodynamic pump (17) in the branch road (16) of device manipulation water cooling loop (5) processed.
8. the cooling system according to claim 5 or 6, it is characterised in that motor (3) and variator (10) are configured to
It is integrated with the driving means of variator.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201310019687 DE102013019687B3 (en) | 2013-11-26 | 2013-11-26 | Cooling system for a hybrid vehicle comprising at least one electric drive machine and at least one internal combustion engine and method for its regulation |
| DE102013019687.6 | 2013-11-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104675504A CN104675504A (en) | 2015-06-03 |
| CN104675504B true CN104675504B (en) | 2017-04-12 |
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ID=52623877
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410693560.XA Active CN104675504B (en) | 2013-11-26 | 2014-11-26 | Cooling system for hybrid vehicle and adjusting method thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104675504B (en) |
| DE (1) | DE102013019687B3 (en) |
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| DE102015212733A1 (en) * | 2015-07-08 | 2017-01-12 | Bayerische Motoren Werke Aktiengesellschaft | Coolant circuit for liquid-cooled gearboxes |
| KR101786670B1 (en) * | 2015-12-10 | 2017-10-18 | 현대자동차 주식회사 | Cooling system for vehicle |
| EP3184336B1 (en) * | 2015-12-21 | 2021-05-12 | Toyota Jidosha Kabushiki Kaisha | Vehicle with a vehicular cooling system |
| DE102016002518A1 (en) * | 2016-03-02 | 2017-09-07 | Audi Ag | Method for operating a motor vehicle |
| CN107225956B (en) * | 2016-03-24 | 2020-11-20 | 长城汽车股份有限公司 | Power system |
| SE541223C2 (en) * | 2016-06-13 | 2019-05-07 | Scania Cv Ab | A cooling system for a combustion engine and a further object |
| FR3070432B1 (en) * | 2017-08-30 | 2019-08-16 | Psa Automobiles Sa | COOLING SYSTEM ASSEMBLY FOR A THERMAL MOTOR AND A GEARBOX |
| DE102017120615A1 (en) * | 2017-09-07 | 2019-03-07 | Volkswagen Aktiengesellschaft | Motor vehicle with a cooling system |
| CN107914569A (en) * | 2017-10-31 | 2018-04-17 | 贵阳吉利发动机有限公司 | A kind of motor vehicle driven by mixed power and its cooling system and method |
| DE102018001020A1 (en) * | 2018-02-08 | 2019-08-08 | Daimler Ag | Cooling device with a coolant circuit |
| DE102018219151B4 (en) * | 2018-11-09 | 2024-02-22 | Zf Friedrichshafen Ag | Operating fluid circuit of a transmission |
| CN111817503B (en) * | 2019-04-11 | 2023-04-07 | 上海汽车集团股份有限公司 | Hybrid gearbox driving motor cooling system and control method |
| JP2021024447A (en) * | 2019-08-06 | 2021-02-22 | 日本電産株式会社 | Motor unit, temperature control system, and vehicle |
| WO2021083532A1 (en) * | 2019-11-01 | 2021-05-06 | Volvo Truck Corporation | A combined cooling and water braking system for a vehicle, and a method for cooling a propulsion device of a vehicle and water braking a pair of wheels of a vehicle |
| CN114046200B (en) * | 2021-11-09 | 2023-02-17 | 上海新动力汽车科技股份有限公司 | Anti-overheating cooling system of hybrid power engine and control method thereof |
| CN115217939B (en) * | 2022-01-04 | 2024-01-23 | 广州汽车集团股份有限公司 | Temperature control system and control method of transmission |
| DE102022113565B3 (en) | 2022-05-30 | 2023-11-09 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Drive unit |
| DE102022113564B3 (en) | 2022-05-30 | 2023-11-09 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Drive unit |
| CN115030806B (en) * | 2022-06-20 | 2023-05-16 | 东风汽车集团股份有限公司 | High-temperature dynamic protection method for engine cooling water in hybrid vehicle type |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN104675504A (en) | 2015-06-03 |
| DE102013019687B3 (en) | 2015-03-26 |
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