CN106895134B - 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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- CN106895134B CN106895134B CN201710183455.5A CN201710183455A CN106895134B CN 106895134 B CN106895134 B CN 106895134B CN 201710183455 A CN201710183455 A CN 201710183455A CN 106895134 B CN106895134 B CN 106895134B
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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
Abstract
The invention discloses a kind of wet dual-clutch automatic transmission cooling flow control method and device, if wherein the former includes: that TOT Transmission Oil Temperature is lower and automobile shift is in neutral gear 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 lower than the second setting value, then determine that cooling flow value is the second setting value, if cooling flow value is higher than third setting value, then determine that cooling flow value is third setting value, if gear is put into gear or is plucked in gearbox request, then determine that cooling flow value is the first setting value, detect vehicle driving state, and cooling flow value is determined according to the driving status of automobile, first, second and third setting value be sequentially increased.No matter the present invention under which kind of operating condition, can provide suitable cooling flow and reduce cooling flow while guarantee has enough cooling flow, improve driver comfort and fuel economy.
Description
Technical field
The present invention relates to automobile technical fields more particularly to a kind of wet dual-clutch automatic transmission cooling flow to control
Method and device.
Background technique
In vehicle driving process, to guarantee that bearing, clutch are able to carry out sufficient lubrication, need for bearing and
Cooling flow more than clutch offer is possible, but simultaneously, when cooling oil passes through clutch, clutch can generate towing torque, and
The towing torque of clutch influences whether the oil consumption of fork controls, clutch control and vehicle, especially under cryogenic,
Since biggish oil viscosity can generate biggish clutch towing torque, which is become apparent.Therefore, wet-type dual-clutch
The Controlling principle of gearbox cooling and lubricating is while guaranteeing that bearing, clutch have enough cooling flow, to reduce as far as possible cold
But flow, to provide better driver comfort and fuel economy.
Summary of the invention
The present invention provides a kind of wet dual-clutch automatic transmission cooling flow control method and device, on solving
Problem is stated, while guaranteeing that bearing, clutch there are enough cooling flow, cooling flow is reduced as far as possible, improves driving comfort
Property and fuel economy.
Wet dual-clutch automatic transmission cooling flow control method provided by the invention, comprising the following steps:
Step S1: detection TOT Transmission Oil Temperature, and determine whether TOT Transmission Oil Temperature is lower than setting oil temperature, if then entering step
Rapid S2, if otherwise entering step S3；
Step S2: whether detection automobile shift is in neutral gear 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, cools down if so, being determined according to clutch temp
Flow value, if it is not, then entering step S4；
Step S4: whether detection cooling flow value is lower than the second setting value, if then determining that cooling flow value sets for second
Definite value, if otherwise entering step S5；
Step S5: whether detection cooling flow value is higher than third setting value, if then determining that cooling flow value sets for third
Definite value, if otherwise entering step S6；
Step S6: whether detection gearbox requests 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 vehicle driving state, and cooling flow value is determined according to the driving status of automobile；
First setting value, the second setting value and third setting value are sequentially increased.
Wet dual-clutch automatic transmission cooling flow control method as described above, wherein preferably, step S3
It specifically includes:
Step S31: detection first clutch temperature；
Step S32: detection second clutch temperature；
Step S33: comparing first clutch temperature and second clutch temperature, if first clutch temperature be greater than second from
Clutch temperature, then detect whether first clutch temperature is higher than set temperature value, if so, 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, determining cooling flow value according to second clutch temperature；If it is not, then into
Enter step S4.
Wet dual-clutch automatic transmission cooling flow control method as described above, wherein preferably, step S4
In, whether detection cooling flow value, which is lower than the second setting value, specifically includes:
Whether detection cooling flow value is lower than the second setting value, if so, record cooling flow value is lower than the second setting value
Duration, and record the duration be more than first time period first number, first number of record is set with first
Determine number to compare, if first number is greater than the first setting number, confirms cooling flow value lower than the second setting value.
Wet dual-clutch automatic transmission cooling flow control method as described above, wherein preferably, step S5
In, whether detection cooling flow value, which is higher than third setting value, specifically includes:
Whether detection cooling flow value is higher than third setting value, if so, record cooling flow value is higher than third setting value
Duration, and record the duration be more than first time period second number, second number of record is set with second
Determine number to compare, if second number is greater than the second setting number, confirms that cooling flow value is higher than third setting value.
Wet dual-clutch automatic transmission cooling flow control method as described above, wherein preferably, the row
The state of sailing includes the first driving status that the stage is generated corresponding to high heat and the second traveling corresponding to the generation stage low in calories
State determines that cooling flow value specifically includes according to the driving status of automobile in step S7:
Under the first driving status, cooling flow value is determined according to the mild high fever clutch friction function of high fever gear box oil；
Under the second driving status, cooling flow value is determined according to the mild low-heat clutch friction function of low-heat gear box oil.
Wet dual-clutch automatic transmission cooling flow control method as described above, wherein preferably, the row
The state of sailing further includes third driving status, and the third driving status is the shape for entering the second driving status from the first driving status
State determines cooling flow value according to the driving status of automobile in step S7 further include:
Under third driving status, cooling flow is determined according to the peak value frictional work that the mild the first row of gear box oil sails state
Value.
Wet dual-clutch automatic transmission cooling flow control method as described above, wherein preferably, step S7
It specifically includes:
Step S71: whether detection automobile shift is in the first driving status, if so, entering step S72；
Step S72: detection TOT Transmission Oil Temperature, and calculate the difference of TOT Transmission Oil Temperature Yu TOT Transmission Oil Temperature limit value；
Step S73: high fever clutch friction function is calculated according to clutch rotational speed difference and clutch transmission torque；
Step S74: it is determined according to the high fever clutch friction function calculated in the difference and step S73 calculated in step S72
Cooling flow value.
The present invention also provides a kind of wet dual-clutch automatic transmission cooling flow control device, including main control module,
Further 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
Detect TOT Transmission Oil Temperature；
Automobile shift detection module, the automobile shift detection module are 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
Detect 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 controlling cooling flow value；
Vehicle driving state detection module, the vehicle driving state detection module are electrically connected with the main control module, and
For detecting vehicle driving state.
Wet dual-clutch automatic transmission cooling flow control device as described above, wherein preferably, it is described from
Clutch temperature detecting module includes first clutch temperature detecting module and second clutch temperature detecting module, described first from
Clutch temperature detecting module is for detecting first clutch temperature, and the second clutch temperature detecting module is for detecting second
Clutch temp.
Wet dual-clutch automatic transmission cooling flow control device as described above, wherein preferably, further include
Timer, the timer are electrically connected with the main control module, and the timer is set for recording cooling flow value lower than second
The duration of definite value be more than first time period first number, and record cooling flow value be higher than third setting value it is lasting when
Between be more than first time period second number.
The beneficial effects of the invention are that guaranteeing axis no matter providing for optimal cooling flow under which kind of operating condition
It holds, while clutch has enough cooling flow, reduces cooling flow, improve driver comfort and fuel economy.
Detailed description of the invention
Fig. 1 is the process of wet dual-clutch automatic transmission cooling flow control method provided in an embodiment of the present invention
Figure；
Fig. 2 is the structure for the wet dual-clutch automatic transmission cooling flow control device that the embodiment of the present invention also provides
Block diagram.
Description of symbols:
10- TOT Transmission Oil Temperature detection module 20- automobile shift detection module
30- clutch temp detection module 40- cooling flow detects control module
50- vehicle driving state detection module 60- main control module
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the 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 cooling flow under state, following table one lists vehicle condition pass corresponding with the priority of flow demand
System.
Table one
| Priority | Flow demand |
| 6 | Driving status cooling flow |
| 5 | Hang/pluck gear cooling flow |
| 4 | The excessively high protection flow of flow |
| 3 | The too low protection flow of flow |
| 2 | Clutch overheat protects flow |
| 1 | P/N driving mode cooling flow under low temperature |
P/N driving mode, refers to whether automobile is in neutral gear or parking gear.
Below with reference to shown in above table and 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, this method specifically includes the following steps:
Step S1: detection TOT Transmission Oil Temperature, and determine whether TOT Transmission Oil Temperature is lower 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 gear 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 that the mild automobile shift of gear box oil is all satisfied the condition of step S1 and step S2, it is cold
But flow value is set as the first setting value, and two clutches have fully opened at this time, does not have heat generation substantially, therefore can incite somebody to action
First setting value is arranged smaller, and in the present embodiment, the first setting value is preferably 0L/min, to reduce the dragging of clutch
Torque.
Step S3: whether detection clutch temp is higher than set temperature value, cools down if so, being determined according to clutch temp
Flow value, if it is not, then entering step S4.
For clutch temp during determining cooling flow, priority is the second level, is had when in step S1 and step S2
One when being unsatisfactory for, is then detected whether clutch temp is higher than set temperature value, it is preferable that and the set temperature value is 150 DEG C, if
It is then to inquire the corresponding cooling flow value of different clutch temps from following table two, confirms cooling flow value.Table two is to deposit in advance
The table stored up, the data in table be it is determining according to test, when test, good cooling effect can be reached, and can not
The dragging torque for increasing clutch is standard.
Table two
| Clutch temp: DEG C | -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 |
By in this present embodiment, needing to confirm the cooling flow of dual-clutch transmission, therefore, step S3 is specifically wrapped
It includes:
Step S31: detection first clutch temperature；
Step S32: detection second clutch temperature；
Step S33: comparing first clutch temperature and second clutch temperature, if first clutch temperature be greater than second from
Clutch temperature, then detect whether first clutch temperature is higher than set temperature value, if so, 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, determining cooling flow value according to second clutch temperature；If it is not, then into
Enter step S4.
That is, being reference with temperature in first clutch and second clutch higher one, inquiry table two is gone, and
Cooling flow is determined, in this way, can ensure that two clutches are effectively cooled.
Step S4: whether detection cooling flow value is lower than the second setting value, if then determining that cooling flow value sets for second
Definite value, if otherwise entering step S5；
Specifically, whether detection cooling flow value is lower than the second setting value, if so, record cooling flow value is lower than second
Duration of setting value, and record first number that the duration is more than first time period, by first number of record and
First setting number compares, if first number is greater than the first setting number, confirms cooling flow value lower than the second setting value.
Step S4 is actually flow too low protection flow value setting, and priority level is third pole, when specific operation, can be with
Whether detection cooling flow value is lower than 2L/min, if so, record is lower than the duration of 2L/min, and it is super to record the duration
The number of 10ms is crossed, if the number is more than 80 times, illustrates that cooling flow value is really relatively low, at this time sets cooling flow value to
2L/min.It avoids cooling flow too low, leads to clutch overheat, after causing automobile circuit breakdown, or even generation fire etc. serious
Fruit.In conjunction with foregoing description content, it is seen then that the second setting value is preferably 2L/min, and first time period is preferably 10ms, the first setting
Number is preferably 80 times.
It is possible to further use timer count, accumulative number is finally monitored whether more than 80 times, in this process
In, if time of the cooling flow value lower than 2L/min is more than 10ms, timer adds one, if cooling flow value is higher than 2L/min
Time be more than 10ms, then timer subtracts one, in whole process, as long as detecting that the numerical value of timer is more than 80 times, is arranged
Cooling flow value is 2L/min.
In addition, when be arranged cooling flow value be 2L/min for a period of time after, the setting can be cancelled, then detected again
Whether cooling flow value, which needs to carry out flow, is crossed bottom protection.
Step S5: whether detection cooling flow value is higher than third setting value, if then determining that cooling flow value sets for third
Definite value, if otherwise entering step S6；
Specifically, whether detection cooling flow value is higher than third setting value, if so, record cooling flow value is higher than third
Duration of setting value, and record second number that the duration is more than first time period, by second number of record and
Second setting number compares, if second number is greater than the second setting number, confirms that cooling flow value is higher than third setting value.
Similar with step S3, step S4 is actually the setting of the excessively high protection flow value of flow, and priority level is the 4th
Grade, when specific operation, can detecte whether cooling flow value is higher than 20L/min, if so, record continues lower than 20L/min
Time, and the number that the duration is more than 10ms is recorded, if the number is more than 500 times, illustrate that cooling flow value is really higher,
20L/min is set by cooling flow value at this time.It avoids cooling flow excessively high, generates biggish clutch and pull torque, cause
The increase of oil consumption.In conjunction with foregoing description content, it is seen then that third setting value is preferably 20L/min, and first time period is preferably
10ms, the second setting number is preferably 500 times.
It is possible to further use timer count, accumulative number is finally monitored whether 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 lower than 20L/min
Time be more than 10ms, then timer subtracts one, in whole process, as long as detecting that the numerical value of timer is more than 500 times, is arranged
Cooling flow is 20L/min.
In addition, when be arranged cooling flow be 20L/min for a period of time after, the setting can be cancelled, then detected again
Whether cooling flow needs to carry out the excessively high protection of flow.
Step S6: whether detection gearbox requests to put into gear or pluck gear, if then determining that cooling flow value is the first setting
Value, if otherwise entering step S7.
Hang/pluck gear cooling flow priority be level V, when gearbox request put into gear or pluck gear when, for guarantee put into gear or
Person plucks the ride comfort of gear, needs lesser cooling flow, so that reducing clutch pulls torque, the present embodiment, the first setting value
Preferably 0L/min.
Step S7: detection vehicle driving state, and cooling flow value is determined according to the driving status of automobile.
Specifically, driving status includes first driving status in stage being generated corresponding to high heat and corresponding to low-heat volume production
Second driving status in raw stage determines that cooling flow value specifically includes according to the driving status of automobile in step S7:
Under the first driving status, cooling flow value is determined according to the mild high fever clutch friction function of high fever gear box oil.
Further, step S7 is specifically included:
Step S71: whether detection automobile is in the first driving status, if so, entering step S72；
Step S72: detection TOT Transmission Oil Temperature, and calculate the difference of TOT Transmission Oil Temperature Yu TOT Transmission Oil Temperature limit value；
Step S73: high fever clutch friction function is calculated according to clutch rotational speed difference and clutch transmission torque；Specifically may be used
To be calculated using following formula:
First clutch frictional work=| the-the first input shaft rotating speed of engine speed | * first clutch torque；
Second clutch frictional work=| the second revolving speed of Motor Speed-Input | the second torque of * clutch；
Then select in first clutch frictional work and second clutch frictional work biggish one as high thermal clutch
Frictional work.
Step S74: it is determined according to the high fever clutch friction function calculated in the difference and step S73 calculated in step S72
Cooling flow value.It specifically can be with inquiry table three.
In the present embodiment, the first driving status includes wriggling, starting, shift and the failure of automobile.Under such conditions, from
Clutch may generate biggish heat, it is therefore desirable to which biggish cooling flow, table three are the automobile according under the first driving status
High fever gear box oil mild high fever clutch friction function calibration test out.When calibration test, can reach good cold
But effect, but the dragging torque that can not increase clutch is standard.
Table three
Under the second driving status, cooling flow value is determined according to the mild low-heat clutch friction function of low-heat gear box oil.
Specifically, the second driving status include automobile neutral gear or parking gear, in gear traveling, put into gear or pluck gear.?
Under these states, the heat that clutch generates is relatively small, therefore only needs that lesser cooling flow value is arranged, specific cooling
Flow value can be obtained with inquiry table four, table four be according under the second driving status, the mild low-heat of low-heat gear box oil of automobile from
The calibration of clutch frictional work tests out.When calibration test, good cooling effect can be reached, and clutch can not be increased
Dragging torque is standard.
Contrast table three and table four are it can be found that under the conditions of the same mild clutch friction function of gear box oil, in table three
Cooling flow value is greater than the cooling flow value in table four, this is because having fully considered the first driving status when doing calibration test
It is to generate the more state of heat, if in duration identical situation, the first driving status will certainly be than the second traveling shape
The total amount of heat that state generates is more, therefore, it is necessary to cooling flow also compare it is more, but no matter in the first driving status or the second row
State is sailed, when clutch friction function and all very high TOT Transmission Oil Temperature, such as shown in four last line of table three and table/column
Data, at this point, the temperature of clutch be all it is very high, be required to biggish cooling flow and cooled down.
Table four
In addition, the driving status further includes third driving status, the third driving status is from the first driving status
Into the state of the second driving status, the driving status in step S7 according to automobile determines cooling flow value further include:
Under third driving status, cooling stream is determined according to the peak value frictional work that the mild the first row of gear box oil sails state
Amount.Automobile how much can all generate from first traveling status transition to the second driving status the case where, at this point it is possible to according to current
The peak value frictional work that the mild the first row of gear box oil sails state determines that cooling flow, specific data are also to determine according to calibration test
's.
Using wet dual-clutch automatic transmission cooling flow control method provided in an embodiment of the present invention, no matter at what
Under kind operating condition, optimal cooling flow can be provided, while guaranteeing that bearing, clutch there are enough cooling flow, is reduced
Cooling flow improves driver comfort and fuel economy.
As shown in Fig. 2, the embodiment of the invention also provides a kind of controls of wet dual-clutch automatic transmission cooling flow
Device, including main control module 60, TOT Transmission Oil Temperature detection module 10, automobile shift detection module 20, clutch temp detect mould
Block 30, cooling flow detection control module 40 and vehicle driving state 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 the gear situation for detecting automobile；Clutch temp detection module
30 are electrically connected 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 controlling cooling flow value；Vehicle driving state detection module 50 is electrically connected with main control module 60, and
For detecting vehicle driving state.
The device is mainly used for realizing the detection method that above-mentioned any embodiment provides, the data of above-mentioned modules detection
It being required to be transferred to main control module 60, main control module 60 receives the data that modules transmit, and issues and instruct to modules,
It is set to execute relevant operation.
Specifically, TOT Transmission Oil Temperature detection module 10 detects TOT Transmission Oil Temperature, and TOT Transmission Oil Temperature is sent to master control mould
Block 60, main control module 60 judge whether TOT Transmission Oil Temperature is lower than setting oil temperature, if so, main control module 60 sends a command to vapour
Car bumper position detection module 20 makes it detect whether automobile is in neutral gear or parking gear, and automobile shift detection module 20 will be examined
It surveys result and feeds back to main control module 60, main control module 60 is then sent instructions to if it is determined that automobile is in neutral gear or parking gear
Cooling flow detects control module 40, it is made to control the first setting value of cooling flow value.
Main control module 60 is if it is determined that automobile is not on neutral gear or parking gear or TOT Transmission Oil Temperature not less than setting
Stand oil temperature value then sends a command to clutch temp detection module 30, it is made to detect clutch temp, and will test result feedback
To main control module 60, main control module 60 determines whether clutch temp is higher than set temperature value, if so, sending instructions to cooling
Flow detection control module 40 makes it that cooling flow value be arranged according to clutch temp.
If main control module 60 determines that clutch temp is lower than set temperature value, automobile shift detection module is sent a command to
20, so that its detection automobile whether is in request and put into gear or pluck gear, and will test result and feed back to 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 request to put into gear or pluck gear
State detection module 50 makes it detect vehicle driving state, and result is fed back to main control module 60, and main control module 60 is according to reception
To result determine and send a command to cooling flow detection control module 40, make it that suitable cooling flow be set according to transport condition
Magnitude.
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 for detecting first clutch temperature, second clutch temperature
Detection module 30 is for detecting second clutch temperature.
Further, which further includes timer, and timer is used to record cooling flow holding lower than the second setting value
The continuous time is more than first number of first time period, and record cooling flow is more than first higher than the duration of third setting value
Second number of period.
Specifically, for first number, using timer count, whether accumulative number is finally monitored more than 80 times,
During this, if time of the cooling flow value lower than 2L/min is more than 10ms, timer adds one, if cooling flow value is high
It is more than 10ms in the time of 2L/min, then timer subtracts one, in whole process, as long as detecting that the numerical value of timer is more than 80
Secondary, then it is 2L/min that cooling flow value, which is arranged,.
For second number, using timer count, accumulative number is finally monitored whether 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 lower than 20L/min
Time be more than 10ms, then timer subtracts one, in whole process, as long as detecting that the numerical value of timer is more than 500 times, is arranged
Cooling flow is 20L/min.
Be described in detail structure, feature and effect of the invention based on the embodiments shown in the drawings, it is above only
For presently preferred embodiments of the present invention, but the present invention does not limit the scope of implementation as shown in the drawings, all according to conception institute of the invention
The change or equivalent example modified to equivalent change of work should all when not going beyond the spirit of the description and the drawings
Within the scope of the present invention.
Claims (9)
1. a kind of wet dual-clutch automatic transmission cooling flow control method, which comprises the following steps:
Step S1: detection TOT Transmission Oil Temperature, and determine whether TOT Transmission Oil Temperature is lower than setting oil temperature, if then entering step
S2, if otherwise entering step S3；
Step S2: whether detection automobile shift is in neutral gear or parking gear, if then determining that cooling flow value sets for first
Definite value, if otherwise entering step S3；
Step S3: whether detection clutch temp is higher than set temperature value, if so, determining cooling flow according to clutch temp
Value, if it is not, then entering step S4；
Step S4: whether detection cooling flow value is lower 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 third setting value, if then determining that cooling flow value is third setting value,
If otherwise entering step S6；
Step S6: whether detection gearbox requests to put into gear or pluck gear, if then determining that cooling flow value is the first setting value, if
Otherwise S7 is entered step；
Step S7: detection vehicle driving state, and cooling flow value is determined according to the driving status of automobile；
First setting value, the second setting value and third setting value are sequentially increased.
2. wet dual-clutch automatic transmission cooling flow control method according to claim 1, which is characterized in that step
Rapid S3 is specifically included:
Step S31: detection first clutch temperature；
Step S32: detection second clutch temperature；
Step S33: comparing first clutch temperature and second clutch temperature, if first clutch temperature is greater than second clutch
Temperature, then detect whether first clutch temperature is higher than set temperature value, cools down if so, being determined 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, 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, which is characterized in that step
In rapid S4, whether detection cooling flow value, which is lower than the second setting value, is specifically included:
Whether detection cooling flow value is lower than the second setting value, if so, record cooling flow value holding lower than the second setting value
The continuous time, and first number that the duration is more than first time period is recorded, by first number of record and the first setting time
Number compares, if first number is greater than the first setting number, confirms cooling flow value lower than the second setting value.
4. wet dual-clutch automatic transmission cooling flow control method according to claim 1, which is characterized in that step
In rapid S5, whether detection cooling flow value, which is higher than third setting value, is specifically included:
Whether detection cooling flow value is higher than third setting value, if so, record cooling flow value is higher than holding for third setting value
The continuous time, and second number that the duration is more than first time period is recorded, by second number of record and the second setting time
Number compares, if second number is greater than the second setting number, confirms that cooling flow value is higher than third setting value.
5. wet dual-clutch automatic transmission cooling flow control method described in any one of -4 according to claim 1,
It is characterized in that, the driving status includes first driving status in stage being generated corresponding to high heat and corresponding to generation low in calories
Second driving status in stage determines that cooling flow value specifically includes according to the driving status of automobile in step S7:
Under the first driving status, cooling flow value is determined according to the mild high fever clutch friction function of high fever gear box oil；
Under the second driving status, cooling flow value is determined according to the mild low-heat clutch friction function of low-heat gear box oil.
6. wet dual-clutch automatic transmission cooling flow control method according to claim 5, which is characterized in that institute
Stating driving status further includes third driving status, and the third driving status is to enter the second driving status from the first driving status
State, cooling flow value is determined according to the driving status of automobile in step S7 further include:
Under third driving status, cooling flow value is determined according to the peak value frictional work that the mild the first row of gear box oil sails state.
7. wet dual-clutch automatic transmission cooling flow control method according to claim 5, which is characterized in that step
Rapid S7 is specifically included:
Step S71: whether detection automobile shift is in the first driving status, if so, entering step S72；
Step S72: detection TOT Transmission Oil Temperature, and calculate the difference of TOT Transmission Oil Temperature Yu TOT Transmission Oil Temperature limit value；
Step S73: high fever clutch friction function is calculated according to clutch rotational speed difference and clutch transmission torque；
Step S74: cooling is determined according to the high fever clutch friction function calculated in the difference and step S73 calculated in step S72
Flow value.
8. a kind of wet dual-clutch automatic transmission cooling flow control device, which requires 1 for perform claim
To control method described in any one of 7, the control device includes main control module, which is characterized in that the control device is also
Include:
TOT Transmission Oil Temperature detection module, the TOT Transmission Oil Temperature detection module are electrically connected with the main control module, and for detecting
TOT Transmission Oil Temperature；
Automobile shift detection module, the automobile shift detection module are electrically connected with the main control module, and for detecting automobile
Gear situation；
Clutch temp detection module, the clutch temp detection module are 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
It detects and controls cooling flow value；
Vehicle driving state detection module, the vehicle driving state detection module is electrically connected with the main control module, and is used for
Detect vehicle driving state；
It further include timer, the timer is electrically connected with the main control module, and the timer is for recording cooling flow value
Duration lower than the second setting value is more than first number of first time period, and record cooling flow value is set higher than third
The duration of value is more than second number of first time period.
9. wet dual-clutch automatic transmission cooling flow control device according to claim 8, which is characterized in that institute
Stating clutch temp detection module includes first clutch temperature detecting module and second clutch temperature detecting module, and described
One clutch temp detection module is for detecting first clutch temperature, and the second clutch temperature detecting module is for detecting
Second clutch temperature.
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| CN107939957B (en) * | 2017-11-02 | 2020-03-17 | 中国第一汽车股份有限公司 | Cooling flow compensation method of wet-type double-clutch automatic transmission |
| 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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104315125A (en) * | 2014-08-29 | 2015-01-28 | 长城汽车股份有限公司 | Oil temperature control method and system for speed changer |
| 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3942836B2 (en) * | 2001-03-09 | 2007-07-11 | ジヤトコ株式会社 | Hydraulic oil cooling device for automatic transmission for vehicle |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104315125A (en) * | 2014-08-29 | 2015-01-28 | 长城汽车股份有限公司 | Oil temperature control method and system for speed changer |
| 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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