CN106895134A - Wet dual-clutch automatic transmission cooling flow control method and device - Google Patents
Wet dual-clutch automatic transmission cooling flow control method and device Download PDFInfo
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- CN106895134A CN106895134A CN201710183455.5A CN201710183455A CN106895134A CN 106895134 A CN106895134 A CN 106895134A CN 201710183455 A CN201710183455 A CN 201710183455A CN 106895134 A CN106895134 A CN 106895134A
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- cooling flow
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- temperature
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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
-
- 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
- F16H57/0467—Elements of gearings to be lubricated, cooled or heated
- F16H57/0469—Bearings or seals
- F16H57/0471—Bearing
-
- 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
- F16H57/0467—Elements of gearings to be lubricated, cooled or heated
- F16H57/0473—Friction devices, e.g. clutches or brakes
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
- Control Of Transmission Device (AREA)
Abstract
The invention discloses a kind of wet dual-clutch automatic transmission cooling flow control method and device, wherein the former includes：If TOT Transmission Oil Temperature is relatively low and automobile shift is in neutral or parking gear, then determine that cooling flow value is the first setting value, if clutch temp is higher than set temperature value, cooling flow value is then determined according to clutch temp, if cooling flow value is less than the second setting value, then determine that cooling flow value is the second setting value, if cooling flow value is higher than the 3rd setting value, then determine that cooling flow value is the 3rd setting value, the gear if gearbox request is put into gear or plucked, then determine that cooling flow value is the first setting value, detection motoring condition, and cooling flow value is determined according to the transport condition of automobile, first, second and the 3rd setting value increase successively.No matter the present invention can provide suitable cooling flow, it is ensured that while having enough cooling flow, reduce cooling flow, improve driver comfort and fuel economy under which kind of operating mode.
Description
Technical field
The present invention relates to automobile technical field, more particularly to a kind of control of wet dual-clutch automatic transmission cooling flow
Method and device.
Background technology
During vehicle traveling, for ensure bearing, clutch can carry out sufficient lubrication, it is necessary to for bearing and
Cooling flow more than clutch offer is possible, but simultaneously, when cooling oil is by clutch, clutch can produce towing moment of torsion, and
The towing moment of torsion of clutch influences whether the oil consumption of fork controls, clutch control and vehicle, especially under cryogenic,
Because larger oil viscosity can produce larger clutch to pull moment of torsion, the phenomenon becomes apparent.Therefore, wet-type dual-clutch
The Controlling principle of gearbox cooling and lubricating is while ensureing that bearing, clutch have enough cooling flow, to reduce as far as possible cold
But flow, to provide more preferable driver comfort and fuel economy.
The content of the invention
The invention provides a kind of wet dual-clutch automatic transmission cooling flow control method and device, with solution
State problem, it is ensured that while bearing, clutch there are enough cooling flow, cooling flow is reduced as far as possible, improve driving comfort
Property and fuel economy.
The wet dual-clutch automatic transmission cooling flow control method that the present invention is provided, comprises the following steps：
Step S1：Detection TOT Transmission Oil Temperature, and whether TOT Transmission Oil Temperature is judged less than setting oil temperature, if then entering step
Rapid S2, if otherwise entering step S3；
Step S2：Whether detection automobile shift is in neutral or parking gear, if then determining that cooling flow value is the
One setting value, if otherwise entering step S3；
Step S3：Whether detection clutch temp is higher than set temperature value, if so, then being determined to cool down according to clutch temp
Flow value, if it is not, then entering step S4；
Step S4：Whether detection cooling flow value is less than the second setting value, if then determining cooling flow value for second sets
Definite value, if otherwise entering step S5；
Step S5：Whether detection cooling flow value is higher than the 3rd setting value, if then determining cooling flow value for the 3rd sets
Definite value, if otherwise entering step S6；
Step S6：Whether detection gearbox asks to put into gear or pluck gear, if then determining that cooling flow value is the first setting
Value, if otherwise entering step S7；
Step S7：Detection motoring condition, and cooling flow value is determined according to the transport condition of automobile；
First setting value, the second setting value and the 3rd setting value increase successively.
Wet dual-clutch automatic transmission cooling flow control method as described above, these, it is preferred to, step S3
Specifically include：
Step S31：Detection first clutch temperature；
Step S32：Detection second clutch temperature；
Step S33：Compare first clutch temperature and second clutch temperature, if first clutch temperature more than second from
Clutch temperature, then detect whether first clutch temperature is higher than set temperature value, if so, then being determined according to first clutch temperature
Cooling flow value；If it is not, then entering step S4；If first clutch temperature be less than second clutch temperature, detection second from
Whether clutch temperature is higher than set temperature value, if so, then determining cooling flow value according to second clutch temperature；If it is not, then entering
Enter step S4.
Wet dual-clutch automatic transmission cooling flow control method as described above, these, it is preferred to, step S4
In, whether detection cooling flow value specifically includes less than the second setting value：
Whether detection cooling flow value is less than the second setting value, if so, then record cooling flow value is less than the second setting value
Duration, and record the duration more than first time period first number, by record first number set with first
Determine number of times to compare, if first number is more than the first set point number, confirm that cooling flow value is less than the second setting value.
Wet dual-clutch automatic transmission cooling flow control method as described above, these, it is preferred to, step S5
In, whether detection cooling flow value specifically includes higher than the 3rd setting value：
Whether detection cooling flow value is higher than the 3rd setting value, if so, then record cooling flow value is higher than the 3rd setting value
Duration, and record the duration more than first time period second number, by record second number set with second
Determine number of times to compare, if second number is more than the second set point number, confirm that cooling flow value is higher than the 3rd setting value.
Wet dual-clutch automatic transmission cooling flow control method as described above, these, it is preferred to, the row
Sailing state includes being produced corresponding to high heat first transport condition and the second traveling corresponding to the generation stage low in calories in stage
State, the transport condition in step S7 according to automobile determines that cooling flow value is specifically included：
Under the first transport condition, cooling flow value is determined according to the gentle hyperpyrexia clutch friction work(of hyperpyrexia gear box oil；
Under the second transport condition, cooling flow value is determined according to the gentle low-heat clutch friction work(of low-heat gear box oil.
Wet dual-clutch automatic transmission cooling flow control method as described above, these, it is preferred to, the row
Sail state and also sail state including the third line, the third line state of sailing is the shape for entering the second transport condition from the first transport condition
State, the transport condition in step S7 according to automobile determines that cooling flow value also includes：
In the case where the third line sails state, cooling flow is determined according to the peak value frictional work that the gentle the first row of gear box oil sails state
Value.
Wet dual-clutch automatic transmission cooling flow control method as described above, these, it is preferred to, step S7
Specifically include：
Step S71：Whether detection automobile shift is in the first transport condition, if so, then entering step S72；
Step S72：Detection TOT Transmission Oil Temperature, and calculate the difference of TOT Transmission Oil Temperature and TOT Transmission Oil Temperature limit value；
Step S73：Hyperpyrexia clutch friction work(is calculated according to clutch rotational speed difference and clutch transmission torque；
Step S74：Hyperpyrexia clutch friction work(according to being calculated in the difference and step S73 calculated in step S72 determines
Cooling flow value.
The present invention also provides a kind of wet dual-clutch automatic transmission cooling flow control device, including main control module,
Also include：
TOT Transmission Oil Temperature detection module, the TOT Transmission Oil Temperature detection module is electrically connected with the main control module, and is used for
Detection TOT Transmission Oil Temperature；
Automobile shift detection module, the automobile shift detection module is electrically connected with the main control module, and for detecting
The gear situation of automobile；
Clutch temp detection module, the clutch temp detection module is electrically connected with the main control module, and is used for
Detection clutch temp；
Cooling flow detects control module, and the cooling flow detection control module is electrically connected with the main control module, and
For detecting and control cooling flow value；
Motoring condition detection module, the motoring condition detection module is electrically connected with the main control module, and
For detecting motoring condition.
Wet dual-clutch automatic transmission cooling flow control device as described above, these, it is preferred to, it is described from
Clutch temperature detecting module include first clutch temperature detecting module and second clutch temperature detecting module, described first from
Clutch temperature detecting module is used to detect first clutch temperature that the second clutch temperature detecting module to be used to detect second
Clutch temp.
Wet dual-clutch automatic transmission cooling flow control device as described above, these, it is preferred to, also include
Timer, the timer is electrically connected with the main control module, and the timer sets for recording cooling flow value less than second
The duration of definite value exceedes first number of first time period, and record cooling flow value higher than the 3rd setting value it is lasting when
Between exceed first time period second number.
Beneficial effect of the present invention is, no matter under which kind of operating mode, providing for optimal cooling flow, it is ensured that axle
Hold, while clutch there are enough cooling flow, reduce cooling flow, improve driver comfort and fuel economy.
Brief description of the drawings
Fig. 1 is the flow of wet dual-clutch automatic transmission cooling flow control method provided in an embodiment of the present invention
Figure；
Fig. 2 is the structure of the wet dual-clutch automatic transmission cooling flow control device that the embodiment of the present invention is also provided
Block diagram.
Description of reference numerals：
10- TOT Transmission Oil Temperature detection module 20- automobile shift detection modules
30- clutch temp detection module 40- cooling flow detects control module
50- motoring condition detection module 60- main control modules
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
It is exemplary to scheme the embodiment of description, is only used for explaining the present invention, and is not construed as limiting the claims.
Wet dual-clutch automatic transmission cooling flow control method provided in an embodiment of the present invention, with each shape of automobile
Based on the need state of the cooling flow under state, following table one lists vehicle condition pass corresponding with the priority of traffic demand
System.
Table one
| Priority | Traffic demand |
| 6 | Transport condition cooling flow |
| 5 | Hang/pluck gear cooling flow |
| 4 | The too high protection flow of flow |
| 3 | The too low protection flow of flow |
| 2 | Clutch overheat protects flow |
| 1 | P/N driving models cooling flow under low temperature |
Whether P/N driving models, refer to automobile in neutral or parking gear.
Below with reference to above table, and shown in Fig. 1, to wet-type double-clutch automatic speed-change provided in an embodiment of the present invention
Case cooling flow control method is described in detail, and the method specifically includes following steps：
Step S1：Detection TOT Transmission Oil Temperature, and whether TOT Transmission Oil Temperature is judged less than setting oil temperature, if then entering step
Rapid S2, if otherwise entering step S3.The setting oil temperature is preferably 140 DEG C.
Step S2：Whether detection automobile shift is in neutral or parking gear, if then determining that cooling flow value is the
One setting value, if otherwise entering step S3.
That is, in the state of the gentle automobile shift of gear box oil is satisfied by the condition of step S1 and step S2, it is cold
But flow value is set to the first setting value, and now two clutches are opened completely, does not have heat generation substantially, therefore can be by
It is smaller that first setting value is set, and in the present embodiment, the first setting value is preferably 0L/min, so as to reduce the dragging of clutch
Moment of torsion.
Step S3：Whether detection clutch temp is higher than set temperature value, if so, then being determined to cool down according to clutch temp
Flow value, if it is not, then entering step S4.
Clutch temp has it is determined that during cooling flow, priority is the second level when in step S1 and step S2
One is detected whether clutch temp is higher than set temperature value when being unsatisfactory for, then, it is preferable that the set temperature value is 150 DEG C, if
It is that the corresponding cooling flow value of different clutch temps is then inquired about from following table two, confirms cooling flow value.Table two is to deposit in advance
The form for having stored up, the data in form are to be determined according to experiment, during experiment, can reach good cooling effect, again can not
The dragging moment of torsion for increasing clutch is standard.
Table two
| Clutch temp：℃ | -40 | -20 | 0 | 50 | 100 | 150 | 200 | 250 | 300 | 400 |
| Cooling flow：L/min | 0 | 0 | 0 | 0 | 0 | 4.6 | 9.2 | 18.4 | 23 | 23 |
Due in the present embodiment, it is necessary to confirm the cooling flow of dual-clutch transmission, therefore, step S3 is specifically wrapped
Include：
Step S31：Detection first clutch temperature；
Step S32：Detection second clutch temperature；
Step S33：Compare first clutch temperature and second clutch temperature, if first clutch temperature more than second from
Clutch temperature, then detect whether first clutch temperature is higher than set temperature value, if so, then being determined according to first clutch temperature
Cooling flow value；If it is not, then entering step S4；If first clutch temperature be less than second clutch temperature, detection second from
Whether clutch temperature is higher than set temperature value, if so, then determining cooling flow value according to second clutch temperature；If it is not, then entering
Enter step S4.
That is, inquiry table two is gone as reference with higher one of temperature in first clutch and second clutch, and
Determine cooling flow, so, can ensure that two clutches are effectively cooled.
Step S4：Whether detection cooling flow value is less than the second setting value, if then determining cooling flow value for second sets
Definite value, if otherwise entering step S5；
Specifically, whether detection cooling flow value is less than the second setting value, if so, then record cooling flow value is less than second
Duration of setting value, and record first number of the duration more than first time period, first number that will be recorded with
First set point number compares, if first number is more than the first set point number, confirms that cooling flow value is less than the second setting value.
Step S4 is actually the too low protection flow value setting of flow, and priority level is the 3rd pole, during concrete operations, can be with
Whether detection cooling flow value is less than 2L/min, if so, then duration of the record less than 2L/min, and it is super to record the duration
The number of times of 10ms is crossed, if the number of times is more than 80 times, illustrates that cooling flow value is really relatively low, be now set to cooling flow value
2L/min.Avoid cooling flow too low, cause clutch overheat, cause automobile circuit breakdown, in addition occur fire etc. it is serious after
Really.With reference to foregoing description content, it is seen then that the second setting value is preferably 2L/min, first time period is preferably 10ms, the first setting
Number of times is preferably 80 times.
It is possible to further use timer count, whether accumulative number of times is finally monitored more than 80 times, in this process
In, if time of the cooling flow value less than 2L/min is more than 10ms, timer adds one, if cooling flow value is higher than 2L/min
Time more than 10ms, then timer subtracts one, in whole process, as long as detecting the numerical value of timer more than 80 times, then sets
Cooling flow value is 2L/min.
In addition, when set cooling flow value be 2L/min for a period of time after, the setting can be cancelled, then detect again
Whether cooling flow value needs to carry out flow is crossed bottom and protects.
Step S5：Whether detection cooling flow value is higher than the 3rd setting value, if then determining cooling flow value for the 3rd sets
Definite value, if otherwise entering step S6；
Specifically, whether detection cooling flow value is higher than the 3rd setting value, if so, then record cooling flow value is higher than the 3rd
Duration of setting value, and record second number of the duration more than first time period, second number that will be recorded with
Second set point number compares, if second number is more than the second set point number, confirms that cooling flow value is higher than the 3rd setting value.
Similar with step S3, step S4 is actually the setting of the too high protection flow value of flow, and priority level is the 4th
Whether level, during concrete operations, can detect cooling flow value higher than 20L/min, if so, then record continuing less than 20L/min
Time, and number of times of the duration more than 10ms is recorded, if the number of times is more than 500 times, illustrate that cooling flow value is really higher,
Cooling flow value is now set to 20L/min.Avoid cooling flow too high, produce larger clutch to pull moment of torsion, cause
The increase of oil consumption.With reference to foregoing description content, it is seen then that the 3rd setting value is preferably 20L/min, first time period is preferably
10ms, the second set point number is preferably 500 times.
It is possible to further use timer count, whether accumulative number of times is finally monitored more than 500 times, in this mistake
Cheng Zhong, if time of the cooling flow higher than 20L/min is more than 10ms, timer adds one, if cooling flow is less than 20L/min
Time more than 10ms, then timer subtracts one, in whole process, as long as detecting the numerical value of timer more than 500 times, then sets
Cooling flow is 20L/min.
In addition, when set cooling flow be 20L/min for a period of time after, the setting can be cancelled, then detect again
Whether cooling flow needs to carry out the too high protection of flow.
Step S6：Whether detection gearbox asks to put into gear or pluck gear, if then determining that cooling flow value is the first setting
Value, if otherwise entering step S7.
The cooling flow priority of gear is hung/plucked for level V, when gearbox request is put into gear or plucks gear, put into gear to ensure or
Person plucks the ride comfort of gear, it is necessary to less cooling flow, so that reducing clutch pulls moment of torsion, the present embodiment, the first setting value
Preferably 0L/min.
Step S7：Detection motoring condition, and cooling flow value is determined according to the transport condition of automobile.
Specifically, transport condition includes producing first transport condition in stage and corresponding to low-heat volume production corresponding to high heat
Second transport condition in raw stage, the transport condition in step S7 according to automobile determines that cooling flow value is specifically included：
Under the first transport condition, cooling flow value is determined according to the gentle hyperpyrexia clutch friction work(of hyperpyrexia gear box oil.
Further, step S7 is specifically included：
Step S71：Whether detection automobile is in the first transport condition, if so, then entering step S72；
Step S72：Detection TOT Transmission Oil Temperature, and calculate the difference of TOT Transmission Oil Temperature and TOT Transmission Oil Temperature limit value；
Step S73：Hyperpyrexia clutch friction work(is calculated according to clutch rotational speed difference and clutch transmission torque；Specifically may be used
Calculated with using equation below：
First clutch frictional work=| the input shaft rotating speed of engine speed-the first | * first clutch moments of torsion；
Second clutch frictional work=| the rotating speed of Motor Speed-Input second | the moment of torsion of * clutches second；
Then in selection first clutch frictional work and second clutch frictional work larger one as thermal clutch high
Frictional work.
Step S74：Hyperpyrexia clutch friction work(according to being calculated in the difference and step S73 calculated in step S72 determines
Cooling flow value.Specifically can be with inquiry table three.
In the present embodiment, the first transport condition includes wriggling, starting, gearshift and the failure of automobile.Under such conditions, from
Clutch may produce larger heat, it is therefore desirable to larger cooling flow, and table three is the automobile according under the first transport condition
The gentle hyperpyrexia clutch friction work(of hyperpyrexia gear box oil demarcate what is tested out.It is good cold that can reach when demarcating test
But effect, can not increase the dragging moment of torsion of clutch for standard again.
Table three
Under the second transport condition, cooling flow value is determined according to the gentle low-heat clutch friction work(of low-heat gear box oil.
Specifically, the second transport condition includes the neutral or parking gear of automobile, travels, puts into gear or pluck gear in gear.
Under these states, the heat that clutch is produced is relatively small, therefore only needs to set less cooling flow value, specific cooling
Flow value can be obtained with inquiry table four, table four be according under the second transport condition, the gentle low-heat of low-heat gear box oil of automobile from
Clutch frictional work demarcates what is tested out.When demarcating test, so that good cooling effect can be reached, clutch can not be increased again
Dragging moment of torsion is standard.
Contrast table three and table four it can be found that under the conditions of the gentle clutch friction work(of same gear box oil, in table three
Cooling flow value is more than the cooling flow value in table four, because when doing demarcation test, having taken into full account the first transport condition
The state for producing heat more is, if in the case of duration identical, the first transport condition will certainly be than the second traveling shape
State produce total amount of heat it is many, accordingly, it would be desirable to cooling flow also compare it is many, but no matter in the first transport condition or the second row
State is sailed, when clutch friction work(and TOT Transmission Oil Temperature all very high, such as shown in table three and last column/mono- of table four row
Data, now, the temperature of clutch is all very high, is required to larger cooling flow and is cooled down.
Table four
Additionally, the transport condition also sails state including the third line, the third line state of sailing is from the first transport condition
Into the state of the second transport condition, the transport condition in step S7 according to automobile determines that cooling flow value also includes：
In the case where the third line sails state, the peak value frictional work for sailing state according to the gentle the first row of gear box oil determines cooling stream
Amount.How much automobile can all produce the situation from the first traveling status transition to the second transport condition, at this point it is possible to according to current
The peak value frictional work that the gentle the first row of gear box oil sails state determines cooling flow, and specific data are also to be determined according to demarcation test
's.
Using wet dual-clutch automatic transmission cooling flow control method provided in an embodiment of the present invention, no matter at what
Plant under operating mode, can provide optimal cooling flow, it is ensured that while bearing, clutch there are enough cooling flow, reduce
Cooling flow, improves driver comfort and fuel economy.
As shown in Fig. 2 the embodiment of the present invention additionally provides a kind of wet dual-clutch automatic transmission cooling flow control
Device, including main control module 60, TOT Transmission Oil Temperature detection module 10, automobile shift detection module 20, clutch temp detection mould
Block 30, cooling flow detects control module 40 and motoring condition detection module 50.
Wherein, TOT Transmission Oil Temperature detection module 10 is electrically connected with main control module 60, and for detecting TOT Transmission Oil Temperature；Automobile
Shift detection module 20 is electrically connected with main control module 60, and for detecting the gear situation of automobile；Clutch temp detection module
30 electrically connect with main control module 60, and for detecting clutch temp；Cooling flow detects control module 40 and main control module 60
Electrical connection, and for detecting and control cooling flow value；Motoring condition detection module 50 is electrically connected with main control module 60, and
For detecting motoring condition.
The device is mainly used in realizing the detection method that above-mentioned any embodiment is provided, the data of above-mentioned modules detection
It is required to be transferred to main control module 60, main control module 60 receives the data that modules are transmitted, and sends modules instruction,
It is set to perform associative operation.
Specifically, the detection of TOT Transmission Oil Temperature detection module 10 TOT Transmission Oil Temperature, and TOT Transmission Oil Temperature is sent to master control mould
Whether block 60, main control module 60 judges TOT Transmission Oil Temperature less than setting oil temperature, if so, then main control module 60 sends a command to vapour
Whether car bumper position detection module 20, make its detection automobile in neutral or parking gear, and automobile shift detection module 20 will be examined
Survey result and feed back to main control module 60, main control module 60 if it is determined that automobile then sends instructions in neutral or parking gear
Cooling flow detects control module 40, and it is the first setting value it is controlled cooling flow value.
Main control module 60 is if it is determined that automobile is not on neutral or parking gear, or TOT Transmission Oil Temperature is not less than and sets
Stand oil temperature value, then send a command to clutch temp detection module 30, makes its detection clutch temp, and testing result is fed back
To main control module 60, main control module 60 judges whether clutch temp is higher than set temperature value, if so, then sending instructions to cooling
Flow detection control module 40, makes it set cooling flow value according to clutch temp.
If main control module 60 judges that clutch temp is less than set temperature value, automobile shift detection module is sent a command to
20, whether its detection automobile is put into gear in request or is plucked gear, and testing result is fed back into main control module 60, main control module
60 if it is determined that automobile request put into gear or pluck gear, then send instructions to cooling flow detection control module 40, make its control cool down
Flow value is the first setting value.
Then, main control module 60 then sends a command to running car shape if it is determined that automobile does not ask to put into gear or pluck gear
State detection module 50, makes its detection motoring condition, and result is fed back into main control module 60, and main control module 60 is according to reception
To result determine to send a command to cooling flow detection control module 40, make it that suitable cooling stream is set according to transport condition
Value.
Further, clutch temp detection module 30 includes first clutch temperature detecting module 30 and second clutch
Temperature detecting module 30, first clutch temperature detecting module 30 is used to detect first clutch temperature, second clutch temperature
Detection module 30 is used to detect second clutch temperature.
Further, the device also includes timer, and timer is used to record cooling flow holding less than the second setting value
The continuous time exceedes first number of first time period, and records duration of the cooling flow higher than the 3rd setting value more than first
Second number of time period.
Specifically, for first number, using timer count, whether accumulative number of times is finally monitored more than 80 times,
During this, if time of the cooling flow value less than 2L/min is more than 10ms, timer adds one, if cooling flow value is high
In 2L/min time more than 10ms, then timer subtracts one, in whole process, as long as detecting the numerical value of timer more than 80
Secondary, then it is 2L/min to set cooling flow value.
For second number, using timer count, whether accumulative number of times is finally monitored more than 500 times, in this mistake
Cheng Zhong, if time of the cooling flow higher than 20L/min is more than 10ms, timer adds one, if cooling flow is less than 20L/min
Time more than 10ms, then timer subtracts one, in whole process, as long as detecting the numerical value of timer more than 500 times, then sets
Cooling flow is 20L/min.
Construction of the invention, feature and action effect is described in detail according to the embodiment shown in schema above, the above is only
It is presently preferred embodiments of the present invention, but the present invention is not to limit practical range shown in drawing, it is every according to conception institute of the invention
The change of work, or be revised as the Equivalent embodiments of equivalent variations, still without departing from specification and diagram covered it is spiritual when, all should
Within the scope of the present invention.
Claims (10)
1. a kind of wet dual-clutch automatic transmission cooling flow control method, it is characterised in that comprise the following steps：
Step S1：Detection TOT Transmission Oil Temperature, and whether TOT Transmission Oil Temperature is judged less than setting oil temperature, if then entering step
S2, if otherwise entering step S3；
Step S2：Whether detection automobile shift is in neutral or parking gear, if then determining cooling flow value for first sets
Definite value, if otherwise entering step S3；
Step S3：Whether detection clutch temp is higher than set temperature value, if so, then determining cooling flow according to clutch temp
Value, if it is not, then entering step S4；
Step S4：Whether detection cooling flow value is less than the second setting value, if then determining that cooling flow value is the second setting value,
If otherwise entering step S5；
Step S5：Whether detection cooling flow value is higher than the 3rd setting value, if then determining that cooling flow value is the 3rd setting value,
If otherwise entering step S6；
Step S6：Whether detection gearbox asks to put into gear or pluck gear, if then determining that cooling flow value is the first setting value, if
Otherwise enter step S7；
Step S7：Detection motoring condition, and cooling flow value is determined according to the transport condition of automobile；
First setting value, the second setting value and the 3rd setting value increase successively.
2. wet dual-clutch automatic transmission cooling flow control method according to claim 1, it is characterised in that step
Rapid S3 is specifically included：
Step S31：Detection first clutch temperature；
Step S32：Detection second clutch temperature；
Step S33：Compare first clutch temperature and second clutch temperature, if first clutch temperature is more than second clutch
Temperature, then detect whether first clutch temperature is higher than set temperature value, if so, then being determined to cool down according to first clutch temperature
Flow value；If it is not, then entering step S4；If first clutch temperature is less than second clutch temperature, second clutch is detected
Whether temperature is higher than set temperature value, if so, then determining cooling flow value according to second clutch temperature；If it is not, then entering step
Rapid S4.
3. wet dual-clutch automatic transmission cooling flow control method according to claim 1, it is characterised in that step
In rapid S4, whether detection cooling flow value specifically includes less than the second setting value：
Whether detection cooling flow value is less than the second setting value, if so, then record cooling flow value holding less than the second setting value
The continuous time, and first number of the duration more than first time period is recorded, by first number for recording and the first setting time
Number compares, if first number is more than the first set point number, confirms that cooling flow value is less than the second setting value.
4. wet dual-clutch automatic transmission cooling flow control method according to claim 1, it is characterised in that step
In rapid S5, whether detection cooling flow value specifically includes higher than the 3rd setting value：
Whether detection cooling flow value is higher than the 3rd setting value, if so, then record cooling flow value holding higher than the 3rd setting value
The continuous time, and second number of the duration more than first time period is recorded, by second number for recording and the second setting time
Number compares, if second number is more than the second set point number, confirms that cooling flow value is higher than the 3rd setting value.
5. the wet dual-clutch automatic transmission cooling flow control method according to any one of claim 1-4, its
It is characterised by, the transport condition includes producing first transport condition in stage and corresponding to generation low in calories corresponding to high heat
Second transport condition in stage, the transport condition in step S7 according to automobile determines that cooling flow value is specifically included：
Under the first transport condition, cooling flow value is determined according to the gentle hyperpyrexia clutch friction work(of hyperpyrexia gear box oil；
Under the second transport condition, cooling flow value is determined according to the gentle low-heat clutch friction work(of low-heat gear box oil.
6. wet dual-clutch automatic transmission cooling flow control method according to claim 5, it is characterised in that institute
State transport condition and also sail state including the third line, the third line state of sailing is to enter the second transport condition from the first transport condition
State, the transport condition in step S7 according to automobile determines that cooling flow value also includes：
In the case where the third line sails state, cooling flow value is determined according to the peak value frictional work that the gentle the first row of gear box oil sails state.
7. wet dual-clutch automatic transmission cooling flow control method according to claim 5, it is characterised in that step
Rapid S7 is specifically included：
Step S71：Whether detection automobile shift is in the first transport condition, if so, then entering step S72；
Step S72：Detection TOT Transmission Oil Temperature, and calculate the difference of TOT Transmission Oil Temperature and TOT Transmission Oil Temperature limit value；
Step S73：Hyperpyrexia clutch friction work(is calculated according to clutch rotational speed difference and clutch transmission torque；
Step S74：Hyperpyrexia clutch friction work(according to being calculated in the difference and step S73 calculated in step S72 determines cooling
Flow value.
8. a kind of wet dual-clutch automatic transmission cooling flow control device, including main control module, it is characterised in that also wrap
Include：
TOT Transmission Oil Temperature detection module, the TOT Transmission Oil Temperature detection module is electrically connected with the main control module, and for detecting
TOT Transmission Oil Temperature；
Automobile shift detection module, the automobile shift detection module is electrically connected with the main control module, and for detecting automobile
Gear situation；
Clutch temp detection module, the clutch temp detection module is electrically connected with the main control module, and for detecting
Clutch temp；
Cooling flow detects control module, and the cooling flow detection control module is electrically connected with the main control module, and is used for
Detect and control cooling flow value；
Motoring condition detection module, the motoring condition detection module is electrically connected with the main control module, and is used for
Detection motoring condition.
9. wet dual-clutch automatic transmission cooling flow control device according to claim 8, it is characterised in that institute
Clutch temp detection module is stated including first clutch temperature detecting module and second clutch temperature detecting module, described the
One clutch temp detection module is used to detect first clutch temperature that the second clutch temperature detecting module to be used to detect
Second clutch temperature.
10. wet dual-clutch automatic transmission cooling flow control device according to claim 8 or claim 9, its feature exists
In also including timer, the timer is electrically connected with the main control module, and the timer is low for recording cooling flow value
Exceed first number of first time period in the duration of the second setting value, and record cooling flow value is higher than the 3rd setting value
Duration exceed first time period second number.
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| CN201710183455.5A CN106895134B (en) | 2017-03-24 | 2017-03-24 | Wet dual-clutch automatic transmission cooling flow control method and device |
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| CN201710183455.5A CN106895134B (en) | 2017-03-24 | 2017-03-24 | Wet dual-clutch automatic transmission cooling flow control method and device |
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| CN107939957A (en) * | 2017-11-02 | 2018-04-20 | 中国第汽车股份有限公司 | The cooling flow compensation method of wet-type double-clutch automatic speed-change device |
| CN111832143A (en) * | 2019-03-29 | 2020-10-27 | 上海汽车变速器有限公司 | Dry-type double-clutch temperature measuring and calculating method based on temperature field heat transfer |
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| CN105156645A (en) * | 2015-07-24 | 2015-12-16 | 安徽江淮汽车股份有限公司 | Clutch temperature control method and system for automatic wet-type double-clutch gearbox |
| CN106065943A (en) * | 2016-08-22 | 2016-11-02 | 安徽江淮汽车股份有限公司 | Double clutch fault diagnosis and processing method and transmission system |
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| US20020128107A1 (en) * | 2001-03-09 | 2002-09-12 | Jatco Transtechnology Ltd. | Cooling system for working fluid used in automatic transmission of automotive vehicle |
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|---|---|
| CN106895134B (en) | 2018-12-14 |
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