CN104279306B - Hybrid power automobile gearbox unit cooling system and cooling method - Google Patents
Hybrid power automobile gearbox unit cooling system and cooling method Download PDFInfo
- Publication number
- CN104279306B CN104279306B CN201410531852.3A CN201410531852A CN104279306B CN 104279306 B CN104279306 B CN 104279306B CN 201410531852 A CN201410531852 A CN 201410531852A CN 104279306 B CN104279306 B CN 104279306B
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- temperature
- transmission unit
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- 238000001816 cooling Methods 0.000 title claims abstract description 186
- 230000005540 biological transmission Effects 0.000 claims description 115
- 210000000635 valve cell Anatomy 0.000 claims description 48
- 238000012544 monitoring process Methods 0.000 claims description 20
- 230000008878 coupling Effects 0.000 claims description 14
- 238000010168 coupling process Methods 0.000 claims description 14
- 238000005859 coupling reaction Methods 0.000 claims description 14
- 238000012856 packing Methods 0.000 claims description 3
- 239000002918 waste heat Substances 0.000 abstract description 4
- 238000007599 discharging Methods 0.000 abstract 3
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 6
- 230000001839 systemic circulation Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000007774 longterm Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 230000002463 transducing effect Effects 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 150000001336 alkenes Chemical group 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000011551 heat transfer agent Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0412—Cooling or heating; Control of temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2700/00—Transmission housings and mounting of transmission components therein; Cooling; Lubrication; Flexible suspensions, e.g. floating frames
Abstract
The invention provides a hybrid power automobile gearbox unit cooling system and cooling method. An oil incoming pipe, an oil discharging pipe and a returning pipe communicating the oil incoming pipe and the oil discharging pipe are arranged in an oil cooling temperature control valve unit, the oil temperature sensing information of a gearbox unit is combined, and valves of oil pipes are controlled to open and close dynamically; on the idling condition, oil from the gearbox unit flows back to the gearbox from the oil cooling temperature control valve unit directly, time for the oil flowing back the gearbox is shortened, oil pressure can be established rapidly, and the gearbox and a coupled mechanism thereof operate at the proper temperature rapidly; when an engine operates in high speed and the gearbox is under high load, oil friction heat is increased sharply, oil of the gearbox flows to an oil cooler completely through the oil cooling temperature control valve, waste heat is radiated through the oil cooler, and the coil flows back to the gearbox unit, so that the accurate control of the oil temperature of the gearbox is implemented, friction loss, oil consumption and discharging are reduced, service life of the gearbox unit is prolonged, and shift quality is guaranteed.
Description
Technical field
The present invention relates to the cooling technology of change speed gear box, especially relate to the cooling system of hybrid electric vehicle gearshift case unit
And cooling means.
Background technology
Adopting single air-cooled or water-cooled, easily under idling operation, oil temperature orthodox car change speed gear box cooling technology at present more
It is cooled excessively, bring oil temperature can not be rapidly reached the preference temperature of change speed gear box, and bring the excess loss of power, simultaneously existing
The single cooling technology of change speed gear box cannot realize accurately cooling down control, under high torque operating mode it is impossible to be accurately controlled cooling,
Thus causing the defects such as change speed gear box and its coupling mechanism efficiency are low, performance boost is not enough.Cold for hybrid electric vehicle gearshift case
But technology also typically continues to use the single type of cooling of conventional gearbox it is impossible to meet the accurate cooling of hybrid electric vehicle gearshift case
Require, and in terms of energy-saving and emission-reduction, be applied in the transmission unit of hybrid vehicle with greater need for new cooling system.
Content of the invention
The present invention is based on above-mentioned prior art defect, and proposition one kind of innovation is particularly suited for hybrid electric vehicle gearshift case
The cooling system of unit and cooling means, by arranging oil inlet pipe, flowline and connecting both in oil cooling temperature control valve cell
Return duct, and combine the oil temperature heat transfer agent in transmission unit, dynamically controls the opening and closing of valve on each oil pipe so that idle
Under fast operating mode, the oil in transmission unit directly flows back to change speed gear box from oil cooling temperature-sensing valve unit, not only shortens change speed gear box
Oily return time, and be conducive to quickly setting up oil pressure, so that change speed gear box and its coupling mechanism is operated in faster in preference temperature,
And when high engine speeds and electric model high-speed cruising, change speed gear box and its coupling mechanism high load capacity, the frictional heat of oil is drastically
Increase, the oil in transmission unit all flows to oil cooler through oil cooling temperature control valve cell, dissipates waste heat through oil cooler
It is back to transmission unit it is achieved that precise control to TOT Transmission Oil Temperature after being dealt into external environment.By the solution of the present invention
Reduce friction loss, reduce complete-vehicle oil consumption and discharge, and extend the service life of transmission unit, ensure that gearshift product
Matter, has wide market prospect in hybrid vehicle.
The technical scheme that present invention solution above-mentioned technical problem is taken is as follows:
A kind of cooling system of transmission unit, including oil cooling temperature control valve cell 2 and oil cooling unit, described transmission unit
Oil cooling temperature control valve cell 2 is connected to by oil pipe, described oil cooling temperature control valve cell 2 is connected to oil cooling unit by oil pipe, described
It is provided with current return circuit, when the oil temperature in transmission unit is less than default oil temperature, from change speed gear box in oil cooling temperature control valve cell 2
Oil in unit is directly back to transmission unit through oil cooling temperature control valve cell 2, when the oil temperature in transmission unit is more than or equal to
During default oil temperature, the oil in transmission unit flow to oil cooling unit through oil cooling temperature control valve cell 2, is carried out cold by oil cooling unit
But it is back to transmission unit through oil cooling temperature control valve cell 2 again after.
Further according to cooling system of the present invention, wherein said oil cooling temperature control valve cell 2 include oil inlet pipe 5,
Flowline 6 and return duct 7, are connected by return duct 7 between described oil inlet pipe 5 and flowline 6, by oil inlet pipe 5, return duct 7 and
Flowline 6 forms described current return circuit, and the front end of described oil inlet pipe 5 is connected to the oil-out of transmission unit, institute by oil pipe
The rear end stating oil inlet pipe 5 is connected to the oil-in of oil cooling unit by oil pipe, and the front end of described flowline 6 is connected to by oil pipe
The oil-in of transmission unit, the rear end of described flowline 6 is connected to the oil-out of oil cooling unit by oil pipe, when speed change packing list
When oil temperature in unit is less than default oil temperature, the oil in transmission unit is through described oil inlet pipe 5, return duct 7 and flowline 6 times
It flow to transmission unit, when the oil temperature in transmission unit is more than or equal to default oil temperature, the oil warp in transmission unit
Described oil inlet pipe 5 flow to oil cooling unit, is back to transmission unit through described flowline 6 again after being cooled down by oil cooling unit.
Further according to cooling system of the present invention, wherein on described oil inlet pipe 5, it is provided with the first valve 8,
Second valve 9 is provided with described flowline 6, described return duct 7 is provided with the 3rd valve 10, when in transmission unit
Oil temperature when being less than default oil temperature, open described 3rd valve 10, simultaneously close off described first valve 8 and the second valve 9, be derived from
Oil in transmission unit is back to transmission unit through described oil inlet pipe 5, return duct 7 and flowline 6, when in transmission unit
Oil temperature when being more than or equal to default oil temperature, close described 3rd valve 10, open described first valve 8 and the second valve 9 simultaneously,
Oil in transmission unit flow to oil cooling unit through described oil inlet pipe 5, after being cooled down by oil cooling unit again through described go out
Oil pipe 6 is back to transmission unit.
Further according to cooling system of the present invention, wherein said first valve 8, the second valve 9 and the 3rd valve
Door 10 is temp.-control valve, is provided with oil temperature monitoring sensor, described first valve 8, the second valve 9 in described transmission unit
Monitor the sensing oil temperature automatic shutter of sensor with the 3rd valve 10 based on oil temperature, when the sensing oil temperature of oil temperature monitoring sensor is little
When default oil temperature, described 3rd valve 10 is in open mode, and described first valve 8 and the second valve 9 are closed,
When the sensing oil temperature that oil temperature monitors sensor is more than or equal to default oil temperature, described 3rd valve 10 is closed, described
First valve 8 and the second valve 9 are in and just open and/or full-gear.
Further according to cooling system of the present invention, wherein said first valve 8 is arranged at the outlet of oil inlet pipe 5
Between end and return duct 7 link position, described second valve 9 be arranged at the arrival end of flowline 6 and return duct 7 link position it
Between.
Further according to cooling system of the present invention, wherein said default oil temperature is 70 DEG C, the first valve 8 and the
The first temperature of opening of two valves 9 is 70 DEG C, and standard-sized sheet temperature is 80 DEG C.
Further according to cooling system of the present invention, wherein said oil cooling unit includes oil cooler 4 and cooling wind
Fan 3, described oil cooling temperature control valve cell 2 is connected to described oil cooler 4, and described cooling fan 3 is close to oil cooler 4 outside setting, and
Described cooling fan 3 works in stepless control model based on the oil temperature of transmission unit.
Further according to cooling system of the present invention, wherein said default oil temperature is in 70 ± 2 DEG C, described change
Fast box unit 1 includes change speed gear box and coupling mechanism, and the oil pump of described transmission internal is as the oil cooling stream in transmission unit 1
Dynamic power source.
A kind of transmission unit cooling means being carried out based on cooling system of the present invention, including following steps:
Oil temperature in step one, real-time monitoring transmission unit, when the oil temperature of monitoring is less than default oil temperature, execution step
Two, when the oil temperature of monitoring is more than or equal to default oil temperature, execution step three；
Step 2, the 3rd valve opened on return duct in oil cooling temperature control valve cell, close the first valve on oil inlet pipe
With the second valve on flowline, the oil in transmission unit is back to change through described oil inlet pipe, return duct and flowline
Fast box unit；
Step 3, the 3rd valve closed on return duct in oil cooling temperature control valve cell, open the first valve on oil inlet pipe
With the second valve on flowline, it flow to the oil cooler in oil cooling unit through described oil inlet pipe from the oil in transmission unit,
It is back to transmission unit through described flowline again after being cooled down by oil cooler.
Further according to transmission unit cooling means of the present invention, wherein step 3 further includes: first
Described first valve and the second valve is controlled to be in just open state, when the oil temperature of monitoring exceeds described default oil temperature preset range
When, control described first valve and the second valve to be shown in a fully open operation, the cooling fan simultaneously starting in oil cooling unit works in
Stepless control model.
Following technique effect at least can be reached by technical scheme:
Cooling scheme of the present invention can realize the precise control to TOT Transmission Oil Temperature under various operating modes, specifically idle
Under fast operating mode, the short path backflow using oil cooling temperature control valve cell ensure that change speed gear box and its coupling mechanism are operated in preference temperature
Interior, it is entirely avoided oil temperature is cooled excessively and brings the excess loss of power, can more quickly set up oil pressure simultaneously, carry
High change speed gear box cooling effect；Simultaneously high negative in high engine speeds and electric model high-speed cruising, change speed gear box and its coupling mechanism
During lotus, the frictional heat of oil drastically increases, and now using oil cooling temperature control valve cell and oil cooler, gear box oil is cooled down, with
Oil temperature is accurately controlled in change speed gear box and its preferable working range of coupling mechanism, this cooling control program ensure that change speed gear box
Operation steady in a long-term.
The present invention is by arranging the automatic control of opening/closing based on TOT Transmission Oil Temperature transducing signal in oil cooling temperature control valve cell
Temp.-control valve, can in real time the operating mode according to change speed gear box carry out oil temperature automatic precise control it is ensured that cooling quality and
Efficiency, reduces the friction loss of transmission unit, effectively reduces complete-vehicle oil consumption and discharge simultaneously, extends transmission unit
Service life so that change speed gear box can operate in optimum state steadily in the long term, improve shift quality, in all kinds of automobiles especially
It is to have broad application prospects in hybrid vehicle.
Brief description
Accompanying drawing 1 is the basic technique principle schematic diagram of the present invention；
Accompanying drawing 2 is the overall structure diagram of transmission unit cooling system of the present invention；
Accompanying drawing 3 works in the oil backflow schematic diagram under partial circulating refrigerating mode for cooling system of the present invention；
Accompanying drawing 4 works in the oil backflow schematic diagram under systemic circulation refrigerating mode for cooling system of the present invention.
The implication of each reference of accompanying drawing is as follows:
1- transmission unit, 2- oil cooling temperature control valve cell, 3- cooling fan, 4- oil cooler, 5- oil inlet pipe, 6- flowline,
7- return duct, 8- first valve, 9- second valve, 10- the 3rd valve.
Specific embodiment
Below in conjunction with accompanying drawing, technical scheme is described in detail, so that those skilled in the art can be more
Plus be clearly understood from the present invention, but therefore do not limit the scope of the invention.
Combine the basic functional principle that accompanying drawing 1 illustrates the present invention, as shown in Figure 1, speed change of the present invention first
Box unit cooling system integrally includes transmission unit 1, oil cooling temperature control valve cell 2, oil cooler 4 and cooling fan 3, described change
The inlet and outlet of fuel channel of fast box unit 1 is connected to oil cooling temperature control valve cell 2, flows into oil cooling temperature-sensing valve list from the oil of transmission unit
In unit 2, inside oil cooling temperature control valve cell 2, there is current return circuit, the valve cell of oil cooling temperature control simultaneously 2 is with oil cooler 4 by pipeline even
Connect, oil cooler 4 is individually cooled down by cooling fan 3, the reduction that oil temperature can be carried out by a relatively large margin by oil cooling 4.So when
When electromotor is in idling operation, electric model low cruise or transmission unit and is in underrun, in transmission unit
The frictional heat of oil is less, only needs in this case to carry out appropriateness to the oil in transmission unit to cool down, is derived from
After oil in transmission unit enters in oil cooling temperature control valve cell 2, directly return change speed gear box in oil cooling temperature control valve cell internal reflux
Unit, as shown in the dotted line in accompanying drawing 1, this mode of operation is referred to as partial circulating refrigerating mode, through oil cooling temperature control valve cell 2 metapedes
With by the oil cooling in transmission unit to suitable operating temperature, and it is prevented from the sub-cooled of oil temperature, and this
Under partial circulating refrigerating mode, shorten the oily currency of transmission unit, be conducive to quickly setting up oil pressure, improve change speed gear box
Work efficiency.Run up when electromotor is in, when electric model high-speed cruising or transmission unit are in high load capacity, change speed gear box
In unit, the frictional heat of oil drastically increases, and oil cooling temperature control valve cell is opened the valve on inlet and outlet of fuel channel and closed in this case
Internal reflux valve, the oil in transmission unit all flows to oil cooler 4 through oil cooling temperature control valve cell 2, by oil cooling 4
Waste heat is dispersed in external environment, gear box oil is back to transmission unit after oil cooler circulating cooling, such as accompanying drawing 1
In shown in solid, wherein cooling fan 3 works in stepless control model it is ensured that oil cooler 4 can be by the oil of transmission unit
Cooling optimal temperature, this mode of operation is referred to as systemic circulation refrigerating mode, in systemic circulation mode of operation, by controlling cooling wind
The rotating speed of fan can ensure that transmission unit is operated in preference temperature it is achieved that the accurate cooling to transmission unit controls.
What the present invention innovated further adopts, to wherein each switch valve, the temperature-sensing valve controlling based on oil temperature transducing signal, such as based on change
The oil temperature sensing value of fast box unit selects cooling system to be operate on partial circulating refrigerating mode and is also operate on systemic circulation cooling mould
Formula, is simultaneously based on oil temperature sensing value and controls the rotating speed of cooling fan to control oil cooled cooling capacity it is achieved that to change speed gear box
Automatically the accurately cooling control of unit.
To accompanying drawing 4, technical scheme is described in further detail below in conjunction with accompanying drawing 2.Speed change of the present invention first
The overall structure of box unit cooling system as shown in Figure 2, including transmission unit 1, oil cooling temperature control valve cell 2 and oil cooling list
Unit, wherein said transmission unit 1 includes change speed gear box, coupling mechanism etc., and the oil from transmission unit is included from speed change
Oil in case itself and its coupling mechanism；Described oil cooling temperature control valve cell 2 includes oil inlet pipe 5, flowline 6 and return duct 7, institute
Connected by return duct 7 between the oil inlet pipe 5 stated and flowline 6, the first valve 8 is provided with described oil inlet pipe 5, described
Second valve 9 is provided with flowline 6, described return duct 7 is provided with the 3rd valve 10；Described first valve 8 and second
Valve 9 is arranged on the pipeline portions between return duct 7 and oil cooler 4, and specifically described first valve 8 is arranged at oil inlet pipe 5
The port of export and return duct 7 link position between, described second valve 9 is arranged at the arrival end of flowline 6 and return duct 7 connects
Between position, as shown in Figure 2.Described oil cooling unit includes oil cooler 4 and cooling fan 3, and described oil cooler is arranged in car load
Front deck, can be used in conjunction with a cooling fan with other radiators, also can be separately provided cooling fan, described cooling fan is close to
Arrange outside oil cooling, for accelerating the radiating of oil cooler, oil cooling is exchanged the heat coming and is dispersed in time in environment.Described
The front end of oil inlet pipe 5 is connected to the oil-out of transmission unit by oil pipe, and the rear end of described oil inlet pipe 5 is connected to by oil pipe
The oil-in of oil cooler 4, the front end of described flowline 6 is connected to the oil-in of transmission unit, described flowline 6 by oil pipe
Rear end be connected to the oil-out of oil cooler 4 by oil pipe.The power source that the oil pump of transmission internal flows as gear box oil,
Oil from transmission unit can flow to oil cooler via oil cooling temperature-sensing valve unit, loop back via oil cooling temperature control valve cell simultaneously
Stream.Described the first valve 8, the second valve 9 and the 3rd valve 10 preferably temp.-control valve, the sensing based on transmission unit
Oil temperature automatic shutter, described temp.-control valve is to realize automatic shutter using heated liquid expansion and the incompressible principle of liquid
Adjust, preferably olefin structure, expand with heat and contract with cold to realize the opening and closing of valve body by temperature-sensitive.Described first valve is further set
The first temperature of opening of door 8 and the second valve 9 is 70 DEG C, and standard-sized sheet temperature (is opened at the beginning of this valve and standard-sized sheet temperature can be according to cold for 80 DEG C
But need to be adjusted).Described 3rd valve 10 is in contrary working condition with the first valve 8 and the second valve 9, when first
When valve and the second valve are in open mode, the 3rd valve closing, when the first valve and the second valve are closed,
3rd valve is opened, and preferably also together can be controlled the 3rd valve as the first valve, the second valve based on oil temperature,
The specific monitoring sensor being provided with its internal oil temperature in described transmission unit, described sensor is simultaneously coupled to the first valve
Door, the second valve, the 3rd valve and cooling fan, described valve is temp.-control valve, and the oil temperature letter based on Sensor monitoring
Breath carries out automatic shutter, and preferably when the oil temperature in the transmission unit of monitoring is less than 70 DEG C, described 3rd valve 10 is in
Open mode, simultaneously described first valve 8 and the second valve 9 be closed, when monitoring transmission unit in oil temperature
When being in more than 70 DEG C, described 3rd valve 10 is closed, and described first valve 8 and the second valve 9 are in just simultaneously
Open state, when the oil temperature in the transmission unit of monitoring is in more than 80 DEG C, described first valve 8 and the second valve 9 are in
Full-gear, generally not higher than 90 DEG C of the oil outlet temperature of change speed gear box and its coupling mechanism, limiting temperature is 105 in short-term
℃.Described cooling fan can carry out electrodeless rotating speed control based on the oil temperature information of Sensor monitoring.By described first, second He
3rd valve determines whether the oil in transmission unit flows to oil cooler and carry out cooling or flowed back through oil cooling temperature-sensing valve, leads to
Supercooling fan is precisely controlled amount of cooling water further.Described oil cooling temperature control valve cell is fixed on change speed gear box by support.
The method based on transmission unit cooling system of the present invention is cooled down to transmission unit that describes below is entered
Row explanation:
It is first according to said structure and transmission unit is connected to oil cooling temperature control valve cell and oil cooling unit by oil pipe, so
Oil temperature in monitoring transmission unit, when oil temperature is less than preset standard temperature, controls the backflow in oil cooling temperature control valve cell afterwards
The 3rd valve 10 on pipe 7 is in open mode, simultaneously the second valve 9 on the first valve 8 and flowline 6 on oil inlet pipe 5
It is closed, cooling system works in partial circulating refrigerating mode, the oil in transmission unit 1 enters through oil inlet pipe 5
Directly it is back to transmission unit 1 through the return duct 7 in oil cooling temperature control valve cell and flowline 6 after in oil cooling temperature control valve cell
In, as shown in Figure 3, not only prevent the sub-cooled of oil temperature, and shorten the oily currency of transmission unit, favorably
In quickly setting up oil pressure, improve change speed gear box work efficiency.Described preset standard temperature is in idling operation, electricity for electromotor
When dynamic model formula low cruise or change speed gear box and its coupling mechanism are in underrun, the oil temperature in the case of frictional heat is less,
Can be surveyed by sensor, preferably described preset standard temperature is 70 DEG C.Also the operating condition that electromotor can be directly based upon comes
Determine and to control the opening and closing of above-mentioned valve, select partial circulating refrigerating mode, such as work as and monitored at electromotor by engine speed
When low speed, idling operation, the 3rd valve 10 is opened, the first valve 8 and the second valve 9 are closed, as long as change speed gear box in a word for control
When unit is in underrun, then the oil pumping output directly flows back through oil cooling temperature control valve cell.Oil when sensor monitoring
Temperature be in during more than preset standard temperature it is meant that electromotor be in run up, electric model high-speed cruising or speed change packing list
When unit is in high load capacity, in transmission unit, the frictional heat of oil drastically increases, and now controls returning in oil cooling temperature control valve cell
The 3rd valve 10 in flow tube 7 is closed, simultaneously the second valve on the first valve 8 and flowline 6 on oil inlet pipe 5
9 are in open mode, and cooling system works in systemic circulation refrigerating mode, as shown in Figure 4, oil warp in transmission unit
Oil cooling temperature control valve cell 2 all flows to oil cooler 4, by oil cooling 4, waste heat is dispersed in external environment, gear box oil
It is back to transmission unit again after oil cooler circulating cooling, thus by the oil cooling of transmission unit to preference temperature, for entering
One step improves to the cooling control accuracy under this systemic circulation refrigerating mode, present invention innovation to the first valve 8 and the second valve
Door 9 setting is just opened and standard-sized sheet temperature, and preferably described temperature of just opening is 70 DEG C, and standard-sized sheet temperature is 80 degrees Celsius, simultaneously to cooling
Stepless control model taken by fan 3, and stepless control strategy is set to:
When the gearbox unit oil temperature of monitoring is less than 82 DEG C, cooling fan does not work；When oil temperature is higher than 82 DEG C,
Cooling fan is opened, and rotating speed is about 1000 revs/min；When oil temperature is higher than 88 DEG C, cooling fan high-speed cruising, rotating speed rises to
2300 revs/min；When oil temperature is reduced to 85 DEG C, cooling fan rotation speed begins to decline；When oil temperature is reduced to 79 DEG C, cooling
Rotation speed of the fan drops to 1000 revs/min；When oil temperature is less than 79 DEG C, cooling fan is closed.Controlled using stepless control mode
Cooling fan work can save energy, with greater need for every part of energy of saving in hybrid vehicle project.
Cooling scheme of the present invention can realize the precise control to TOT Transmission Oil Temperature under various operating modes, in electromotor
Under idling operation, the short path backflow using oil cooling temperature control valve cell ensure that change speed gear box and its coupling mechanism are operated in suitable temperature
In degree, simultaneously facilitate the foundation of fast oil pressure, in high engine speeds and electric model high-speed cruising, using oil cooling temperature-sensing valve list
Unit and oil cooler cool down to gear box oil, in combination with the inorganic speed change control just opened with standard-sized sheet temperature control and cooling fan
System, oil temperature is accurately controlled in change speed gear box and its preferable working range of coupling mechanism, this cooling control program ensure that
The operation steady in a long-term of change speed gear box, reduces the friction loss of transmission unit, effectively reduces complete-vehicle oil consumption and discharge simultaneously,
Extend the service life of transmission unit so that change speed gear box can operate in optimum state steadily in the long term, improve gearshift product
Matter, has broad application prospects in all kinds of automobiles especially hybrid vehicle.
The above is only and the preferred embodiment of the present invention is described, technical scheme is not limited to
This, any known deformation that those skilled in the art are made on the basis of the major technique design of the present invention broadly falls into the present invention
Claimed technology category, the specific protection domain of the present invention is defined by the record of claims.
Claims (8)
1. a kind of cooling system of transmission unit is it is characterised in that include oil cooling temperature control valve cell (2) and oil cooling unit, institute
State transmission unit and oil cooling temperature control valve cell (2) is connected to by oil pipe, described oil cooling temperature control valve cell (2) is connected by oil pipe
It is provided with current return circuit in oil cooling unit, described oil cooling temperature control valve cell (2), preset when the oil temperature in transmission unit is less than
During oil temperature, the oil in transmission unit is directly back to transmission unit through oil cooling temperature control valve cell (2), when speed change packing list
When oil temperature in unit is more than or equal to default oil temperature, the oil in transmission unit flow to oil cooling through oil cooling temperature control valve cell (2)
Unit, is back to transmission unit through oil cooling temperature control valve cell (2) after being cooled down by oil cooling unit again；Described oil cooling temperature-sensing valve
Unit (2) includes oil inlet pipe (5), flowline (6) and return duct (7), passes through back between described oil inlet pipe (5) and flowline (6)
Flow tube (7) connects, and forms described current return circuit by oil inlet pipe (5), return duct (7) and flowline (6), described oil inlet pipe (5)
Front end is connected to the oil-out of transmission unit by oil pipe, and the rear end of described oil inlet pipe (5) is connected to oil cooling list by oil pipe
The oil-in of unit, the front end of described flowline (6) is connected to the oil-in of transmission unit, described flowline (6) by oil pipe
Rear end be connected to the oil-out of oil cooling unit by oil pipe, when the oil temperature in transmission unit is less than default oil temperature, be derived from
Oil in transmission unit is back to transmission unit through described oil inlet pipe (5), return duct (7) and flowline (6), works as change speed gear box
When oil temperature in unit is more than or equal to default oil temperature, the oil in transmission unit flow to oil cooling list through described oil inlet pipe (5)
Unit, is back to transmission unit through described flowline (6) after being cooled down by oil cooling unit again；Described oil inlet pipe (5) sets
It is equipped with the first valve (8), the second valve (9) is provided with described flowline (6), described return duct (7) is provided with
Three valves (10), when the oil temperature in transmission unit is less than default oil temperature, opens described 3rd valve (10), simultaneously close off institute
State the first valve (8) and the second valve (9), the oil in transmission unit through described oil inlet pipe (5), return duct (7) and goes out
Oil pipe (6) is back to transmission unit, when the oil temperature in transmission unit is more than or equal to default oil temperature, closes described 3rd valve
Door (10), opens described first valve (8) and the second valve (9), the oil in transmission unit is through described oil inlet pipe simultaneously
(5) it flow to oil cooling unit, after being cooled down by oil cooling unit, be back to transmission unit through described flowline (6) again.
2. cooling system according to claim 1 is it is characterised in that described first valve (8), the second valve (9) and
Three valves (10) are temp.-control valve, be provided with described transmission unit oil temperature monitoring sensor, described first valve (8),
Second valve (9) and the 3rd valve (10) monitor the sensing oil temperature automatic shutter of sensor based on oil temperature, when oil temperature monitors sensing
When the sensing oil temperature of device is less than default oil temperature, described 3rd valve (10) is in open mode, described first valve (8) and second
Valve (9) is closed, when the sensing oil temperature that oil temperature monitors sensor is more than or equal to default oil temperature, described 3rd valve
(10) it is closed, described first valve (8) and the second valve (9) are in and just open and/or full-gear.
3. cooling system according to claim 1 is it is characterised in that described first valve (8) is arranged at oil inlet pipe (5)
Between the port of export and return duct (7) link position, described second valve (9) is arranged at arrival end and the return duct of flowline (6)
(7) between link position.
4. cooling system according to claim 2 it is characterised in that described default oil temperature be 70 DEG C, the first valve (8) and
The first temperature of opening of the second valve (9) is 70 DEG C, and standard-sized sheet temperature is 80 DEG C.
5. the cooling system according to any one of claim 1-4 is it is characterised in that described oil cooling unit includes oil cooler
(4) and cooling fan (3), described oil cooling temperature control valve cell (2) is connected to described oil cooler (4), and described cooling fan (3) is close to
Arrange outside oil cooler (4), and described cooling fan (3) works in stepless control model based on the oil temperature of transmission unit.
6. the cooling system according to any one of claim 1-3 is it is characterised in that described default oil temperature is in 70 ± 2 DEG C
Interior, described transmission unit (1) includes change speed gear box and coupling mechanism, and the oil pump of described transmission internal is as transmission unit
(1) power source of the oil cooling flowing in.
7. the transmission unit cooling means that carried out based on the cooling system described in any one of claim 1-6 it is characterised in that
Comprise the following steps:
Oil temperature in step one, real-time monitoring transmission unit, when the oil temperature of monitoring is less than default oil temperature, execution step two,
When the oil temperature of monitoring is more than or equal to default oil temperature, execution step three；
Step 2, the 3rd valve opened on return duct in oil cooling temperature control valve cell, close the first valve on oil inlet pipe and go out
The second valve on oil pipe, the oil in transmission unit is back to change speed gear box through described oil inlet pipe, return duct and flowline
Unit；
Step 3, the 3rd valve closed on return duct in oil cooling temperature control valve cell, open the first valve on oil inlet pipe and go out
The second valve on oil pipe, flow to the oil cooler in oil cooling unit, by oil from the oil in transmission unit through described oil inlet pipe
Cooler is back to transmission unit through described flowline after being cooled down again.
8. transmission unit cooling means according to claim 7, step 3 further includes: first controls described first
Valve and the second valve are in just open state, when the oil temperature of monitoring exceeds described default oil temperature preset range, control described the
One valve and the second valve are shown in a fully open operation, and the cooling fan simultaneously starting in oil cooling unit works in stepless control model.
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| CN201410531852.3A CN104279306B (en) | 2014-10-11 | 2014-10-11 | Hybrid power automobile gearbox unit cooling system and cooling method |
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| CN201410531852.3A CN104279306B (en) | 2014-10-11 | 2014-10-11 | Hybrid power automobile gearbox unit cooling system and cooling method |
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| CN104279306B true CN104279306B (en) | 2017-02-01 |
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| CN105065651B (en) * | 2015-08-24 | 2017-10-20 | 东风富士汤姆森调温器有限公司 | A kind of thermoregulating system by cooling medium control gear box oil temperature |
| CN105465337B (en) * | 2015-12-17 | 2018-05-18 | 天津华北集团铜业有限公司 | A kind of device for cooling gear case lubricating oil |
| EP3228903B1 (en) * | 2016-04-06 | 2018-07-25 | Cimco Marine AB | A device for transferring rotational power, a machine including such a device and use of such a device |
| CN107346925A (en) * | 2016-05-06 | 2017-11-14 | 宁波盛智气能科技有限公司 | The high speed double-screw compressor electric system of magneto driving |
| CN106151477A (en) * | 2016-08-17 | 2016-11-23 | 无锡市鑫盛换热器制造有限公司 | Gearbox lubrication cooling system and method for work thereof |
| CN106151476A (en) * | 2016-08-17 | 2016-11-23 | 无锡市鑫盛换热器制造有限公司 | Gear-box filtration system outlet valve block |
| CN108087532B (en) * | 2016-11-21 | 2021-10-01 | 浙江三花汽车零部件有限公司 | Heat exchange assembly |
| CN108087530B (en) * | 2016-11-21 | 2022-04-05 | 浙江三花汽车零部件有限公司 | Heat exchange assembly |
| CN108087531B (en) * | 2016-11-21 | 2021-04-16 | 浙江三花汽车零部件有限公司 | Heat exchange assembly |
| CN108253120A (en) * | 2017-11-29 | 2018-07-06 | 西安法士特汽车传动有限公司 | A kind of heavy truck temperature of transmission self-regulation cooling system |
| JP2019168250A (en) * | 2018-03-22 | 2019-10-03 | 本田技研工業株式会社 | Motor unit and vehicle |
| CN108757141A (en) * | 2018-05-29 | 2018-11-06 | 安徽江淮汽车集团股份有限公司 | A kind of automatic catch automobile cooling system |
| CN108730496A (en) * | 2018-05-30 | 2018-11-02 | 吉利汽车研究院（宁波）有限公司 | Cooling system for speed changing box and its cooling means and automobile |
| CN108679211A (en) * | 2018-06-04 | 2018-10-19 | 北京长城华冠汽车技术开发有限公司 | Oil cooling system and automobile |
| CN110925402A (en) * | 2019-12-17 | 2020-03-27 | 泸州容大智能变速器有限公司 | Heating and cooling system applied to automatic gearbox and operation method thereof |
| CN112196989A (en) * | 2020-11-16 | 2021-01-08 | 湘潭大学 | Automatic gearbox lubricating and cooling device and control method |
| CN113124138A (en) * | 2021-03-31 | 2021-07-16 | 江苏金彭集团有限公司 | Silence control system for gearbox |
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| DE3925412A1 (en) * | 1989-08-01 | 1991-02-07 | Man Nutzfahrzeuge Ag | VEHICLE OR DEVICE DRIVE DEVICE |
| DE4227119A1 (en) * | 1992-08-17 | 1994-02-24 | Kloeckner Humboldt Deutz Ag | Oil circulation for farm tractor gearbox and hydraulic ram - has oil supply to base of sump with injector pump driven by return flow pressure |
| JP2001116123A (en) * | 1999-10-19 | 2001-04-27 | Toyota Motor Corp | Oil temperature control device for transmission |
| US7976419B2 (en) * | 2008-12-11 | 2011-07-12 | Ford Global Technologies, Llc | Control of the flow rate in a transmission oil cooler |
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