CN107387599A - The half hitch chalaza self-learning method of wet dual-clutch automatic transmission - Google Patents
The half hitch chalaza self-learning method of wet dual-clutch automatic transmission Download PDFInfo
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- CN107387599A CN107387599A CN201710821176.7A CN201710821176A CN107387599A CN 107387599 A CN107387599 A CN 107387599A CN 201710821176 A CN201710821176 A CN 201710821176A CN 107387599 A CN107387599 A CN 107387599A
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- driving current
- clutch
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- pressure
- learning
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/06—Control by electric or electronic means, e.g. of fluid pressure
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/10—System to be controlled
- F16D2500/102—Actuator
- F16D2500/1026—Hydraulic
- F16D2500/1027—Details about the hydraulic valves
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/10—System to be controlled
- F16D2500/11—Application
- F16D2500/1107—Vehicles
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/30—Signal inputs
- F16D2500/302—Signal inputs from the actuator
- F16D2500/3022—Current
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/50—Problem to be solved by the control system
- F16D2500/502—Relating the clutch
- F16D2500/50245—Calibration or recalibration of the clutch touch-point
- F16D2500/50248—During assembly
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/70—Details about the implementation of the control system
- F16D2500/706—Strategy of control
- F16D2500/70673—Statistical calculations
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
The invention discloses a kind of half hitch chalaza self-learning method of wet dual-clutch automatic transmission, including：Calibration process, learning process and definite value process.Maximum, minimum half hitch chalaza electric current is determined according to default maximum, minimum quasi integration pressure value, driving current is lifted in maximum, minimum half hitch chalaza electric current, and according to clutch pressure rate of change repetitive learning process to find at least three half hitch chalaza learning values, finally the half hitch chalaza learning value of acquisition is averaged to obtain final quasi integration and presses force value.The present invention and its preferred scheme are easily achieved, are easy to apply, workable and data acquisition is convenient, are not related to the control of vehicle speed, engine and brakes, more applicable and be easy to the offline self study of wet dual-clutch automatic transmission.
Description
Technical field
The present invention relates to wet dual-clutch automatic transmission control field, more particularly to a kind of wet-type dual-clutch are automatic
The half hitch chalaza self-learning method of gearbox.
Background technology
The half hitch chalaza (kisspoint) of wet dual-clutch automatic transmission refers to that clutch can just transmit moment of torsion
Critical pressure point, when clutch pressure is less than kisspoint, clutch pressure and transferable moment of torsion are corresponding to close
System, while driving current and clutch pressure are not linear relationships and the clutch pressure rate of climb is slower, when clutch pressure
After power is more than kisspoint, clutch pressure and transferable moment of torsion direct proportionality, while clutch pressure and driving electricity
Direct proportionality is flowed, so controls of the kisspoint for clutch is most important.
The scattered error before use, due to zero clutch part in itself is assembled on vehicle in wet dual-clutch automatic transmission
With the presence of consistency problem, it is necessary to the kisspoint of every wet dual-clutch automatic transmission is learnt, so as to obtain
Obtain the actual kisspoint of every gearbox.
The content of the invention
It is an object of the invention to provide a kind of half hitch chalaza self-learning method of wet dual-clutch automatic transmission, so as to
The quasi integration for obtaining clutch presses force value.
The technical solution adopted by the present invention is as follows：
A kind of half hitch chalaza self-learning method of wet dual-clutch automatic transmission, including：Calibration process, learning process
And definite value process；
The calibration process includes：
It is determined that after the completion of the main hydraulic pressure foundation of clutch, the driving current for driving oil circuit magnetic valve is exported；
Detect gear signal, clutch pressure and the driving current；
When gear is neutral gear, the driving current is lifted by default first slope, the clutch pressure is increased；
When the clutch pressure rises to default minimum quasi integration pressure value, the driving current now is recorded
For minimum half hitch chalaza electric current；
When the clutch pressure rises to maximum half default combination pressure value, the driving current now is recorded
For maximum half binding site electric current；
Stop exporting the driving current；
The learning process includes：
The driving current is exported, and the driving current is equal to the minimum half hitch chalaza electric current；
The driving current is lifted by default second slope, and detects the rate of change of clutch pressure；
Before the driving current rises to maximum half described binding site electric current, when the rate of change is more than default speed
When rate threshold value and the clutch pressure are less than maximum half described combination pressure value, the clutch pressure now is recorded as
Half hitch chalaza learning value；
Stop exporting the driving current, and repeat the learning process, until obtaining at least three half hitch chalaza
Learning value；
The definite value process includes：
Calculate the average value of the half hitch chalaza learning value obtained；
The average value is recorded as quasi integration and presses force value.
Preferably, in addition to：
In the calibration process, stop after exporting the driving current, if the clutch pressure is less than or equal in advance
If pressure threshold, then perform the learning process.
Preferably, it is described the driving current is included equal to the minimum half hitch chalaza electric current：Make the driving current
Equal to the minimum half hitch chalaza electric current and kept for a default response time.
Preferably, in addition to：
In the learning process, when the clutch pressure is more than or equal to maximum half described combination pressure value, stop
The driving current is exported, and repeats the learning process.
Preferably, in addition to：
In the learning process, when the driving current reaches maximum half described binding site electric current, stop output institute
Driving current is stated, and repeats the learning process.
Preferably, in addition to：
Before it is determined that clutch establishes main hydraulic pressure, control for driving the motor of gear box oil pump to operate, and detect institute
State the rotating speed of motor.
Preferably, in addition to：
If the rotating speed exceeds default rotary speed threshold value, it is determined that the main hydraulic pressure of clutch, which is established, to be completed.
The present invention and its preferred scheme are easily achieved, are easy to apply, workable and data acquisition is convenient, are not related to whole
The control of car speed, engine and brakes, it is more applicable and be easy to the offline self study of wet dual-clutch automatic transmission.
Brief description of the drawings
To make the object, technical solutions and advantages of the present invention clearer, the present invention is made into one below in conjunction with accompanying drawing
Step description, wherein：
Fig. 1 is the embodiment of the half hitch chalaza self-learning method of wet dual-clutch automatic transmission provided by the invention
Flow chart.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not construed as limiting the claims.
The invention provides a kind of half hitch chalaza self-learning method of wet dual-clutch automatic transmission, as shown in figure 1,
Mainly include calibration process, learning process and definite value process.
Specifically, calibration process can refer to that demarcation meets kisspoint maximum, simulation electricity in the present invention
Stream, can use following steps：
Step S1, determine that the main hydraulic pressure of clutch is established to complete；
It is well known that wet dual-clutch automatic transmission is electrichydraulic control mode, i.e., by driving oil pump, to build
Hydraulic pressure in vertical gearbox control oil circuit, to realize the purpose of driving clutch；Thus, in the present embodiment to determine clutch
Main hydraulic pressure is the most important condition, in practical operation, determine main hydraulic pressure whether establish completion mode have it is a variety of, such as in oil circuit
The pressure sensor either running status of flowmeter or detection oil pump is set, can also be by monitoring oil pipe state etc.；At this
In embodiment, concrete implementation process is before it is determined that clutch establishes main hydraulic pressure, is controlled for driving gear box oil pump
Motor operates, it is to be herein pointed out in order to lift the convenience of self study and operability, in the present embodiment using electricity
Power source of the engine as driving gear box oil pump in machine simulation reality, certainly further, can also be to the motor
Rotating speed is detected, by the actual speed of motor compared with default rotary speed threshold value, such as when the rotating speed of motor is more than
During 800rpm, then show that gear box oil pump has been motor driven start-up operation, you can to determine that now the main hydraulic pressure of clutch is
Establish.
Step S2, the driving current for driving oil circuit magnetic valve is exported；
As described above, wet dual-clutch automatic transmission is electrichydraulic control mode, the magnetic valve in oil circuit is clutch
The main control part of fluid power executing agency, hydraulic pressure is performed by the opening and closing and aperture control that control magnetic valve, in this implementation
In example, by the way of by the unlatching of the size of driving current control magnetic valve and aperture.
Then, gear signal, clutch pressure and the driving current step S3, are detected；
After output driving current, oil circuit magnetic valve starts to act, and for driving the pressure of parameter case clutch, claims herein
Start to change for clutch pressure, thus the present embodiment proposes to detect two variables, i.e. clutch pressure and driving current
Size, meanwhile, the present embodiment also proposed detection gear signal, be need further determine whether to meet clutch self study
Condition, illustrate and see below.
Step S4, judge whether gear is neutral gear, if so, then performing step S5, as described in the lifting of default first slope
Driving current, the clutch pressure is set to increase；
It is proposed above, to perform the self study of clutch, it is necessary to meet several preconditions, wherein being the main liquid in oil circuit
Whether pressure establishes completion, and another is then to need to judge gear, because being in power output in shelves, i.e. gearbox when gear is in
During state, clutch pressure can transmit output torque as caused by the unlatching of abovementioned steps oil circuit magnetic valve, so as to influence certainly
Learning process, thus the present invention is proposed when needing to ensure that gear is in neutral gear, just can further perform next step (step
S5), otherwise, condition satisfaction will be consistently detected for up to.
First slope on being referred in step S5 represents a kind of ascending rate, and its purpose is to ensure driving current
Increase process is uniform and changed in gradient, can stablize in the hope of clutch pressure and rise, such as first slope can be
10mA/s, certainly, the concrete numerical value can be adjusted according to the actual requirements, and the present invention is not limited this.
Step S6, when clutch pressure rises to default minimum quasi integration pressure value, by the driving current now
It is recorded as minimum half hitch chalaza electric current；
First reference point is progressively risen to steadily in gradient with the pressure of clutch, the reference point is adopted in the present embodiment
With the specified minimum quasi integration pressure value of wet dual-clutch automatic transmission, it is to be herein pointed out wet-type dual-clutch
The hardware supplier of automatic gear-box would generally provide a kisspoint tolerance calibrated for specific hardware when dispatching from the factory
Band scope, which includes minimum k isspoint pressure spots, i.e., minimum quasi integration pressure value；Thus, in this step, when from
When clutch pressure rises to minimum k isspoint pressure spots, such as 100kpa, then driving current now is recorded as most smaller part
Binding site electric current, to treat subsequent operation.
Step S7, when clutch pressure rises to maximum half default combination pressure value, by the driving current now
It is recorded as maximum half binding site electric current；
After step S6, driving current is continued to lift up, it is up to rising to second reference point when clutch pressure, i.e., default
Maximum half combination pressure value, as described above, maximum half combination pressure value equally can be the kisspoint provided from supplier
Tolerance range in maximum kisspoint pressure spots, such as 260kpa, then, will now when clutch pressure reaches this
Driving current is recorded as maximum half binding site electric current, to treat subsequent operation.
After kisspoint maximum, minimum drive current have been demarcated by above-mentioned steps, perform step S8, stop output
The driving current；
Now, that is, represent that the calibration process is completed, recover the original state of clutch in case follow-up learning process, this
Using by output current zero setting in embodiment, the mode of oil circuit magnetic valve is closed, can also be entered certainly in practical operation
One step considers that, because Hardware Response Delay needs a period of time, namely after output driving current is stopped, clutch pressure, which declines, to be needed
A process is wanted, i.e., in order to ensure that proving operation has been completed and successfully exited, it is also necessary to judge that clutch actual pressure is
No to drop to a less pressure value, the less pressure value can correspond to hydraulic state during driving current 0mA, example
Such as, if clutch pressure is less than or equal to default pressure threshold (10kpa), it is determined that calibration process has been completed and successfully moved back
Go out, wherein 10kpa is a calibration value that can be changed according to being actually needed；Further identify whether to demarcate successful side
Formula, can also be by checking whether above-mentioned minimum, maximum half binding site electric current is effectively recorded, if one of them is not effective
Record, then can repeat calibration process, re-start record, after already ensuring that calibration process is successfully completed, then
The learning process can be started.
The learning process refers between foregoing minimum, maximum drive current in the present embodiment, finds kisspoint
Probable value, and by multiple learning process, obtain multiple kisspoint learning values, specific implementation step can include：
Step S9, output driving current, and driving current is equal to minimum half hitch chalaza electric current；
Again the driving current of output driving oil circuit magnetic valve, but be now purposive output, i.e. target is to make drive
Streaming current is equal to the foregoing minimum half hitch chalaza electric current calibrated, and certainly, the process can be that progressively average rate increases driving current,
Can also be directly by the latter step output of minimum half hitch chalaza given value of current in place；In practical operation, the step can also include
Driving current is equal to minimum half hitch chalaza electric current and also need to be kept for a default response time, such design is equally
In view of the Hardware Response Delay in practical operation, in order to avoid hardware delay, it is necessary to ensure that clutch pressure can be really achieved surely
Fixed pressure, so differentiated by a default time, such as 1s, if driving current can not be kept in 1s, or
The foundation or hold mode that clutch pressure can not be stablized, then can exit learning process and restart to learn, certainly, the response
Time equally can be demarcated and be adjusted, and the present invention is not limited this.
Step 10, by default second slope driving current is lifted, and detect the rate of change of clutch pressure；
This process is in order to be slowly increased driving current since minimum half hitch chalaza electric current, to be able to observe that clutch
The significant change of pressure, the principle of its behind be, because in the moment for reaching kisspoint, clutch pressure growth rate meeting
Become big suddenly, so when with certain driving current gradient rising, if now clutch pressure becomes big suddenly, then it is assumed that should
It is exactly kisspoint pressure spots corresponding to point, but because jumping for clutch pressure is very fast, thus need use more slow
Slow driving current rate of rise, also second slope relaxes than first slope immediately, such as is increased with 0.1mA/s speed
Add electric current, be so easy to be accurately detected the rate of change of clutch pressure.
Then step S11, when foregoing rate of change is more than default rate-valve value, by the clutch pressure now
It is recorded as half hitch chalaza learning value；
Need exist for explanation, above it has already been indicated that this learning process need to foregoing demarcation minimum, maximum drive electricity
Kisspoint probable value is found between stream, thus one of step S11 precondition is, maximum half is risen in driving current
Before binding site electric current, in other words, in learning process, when driving current reaches maximum half binding site electric current, then need to stop
Only output driving current, and repeat the learning process；In addition, it is also necessary to it is yet further contemplated that after clutch pressure rises quickly
Maximum half binding site pressure value that can not be more than in foregoing tolerance range, once being more than or equal to maximum half combination pressure value, is then meaned
Learning process failure, does not get effective kisspoint learning values, then then stops output driving current, and repeats
Learning process；Also it is that step S11 need to meet at least the above two conditions, its just can consider learning success, and will learn
Meet pressure spot of the rate of change more than default rate-valve value in journey as half hitch chalaza learning value, wherein the rate-valve value
The applying working condition that actual vehicle can be considered is demarcated and adjusted, such as can be used in a concrete scheme
1.2kpa/ms is as default rate-valve value.
After step s 11, perform step S12, stop output driving current, and repetitive learning process, until obtaining extremely
Few three half hitch chalaza learning values；
In view of the presence due to factors such as Hardware Response Delays, study every time may all introduce certain deviation, thus this
Embodiment is considered as that learning process is repeated several times, and gives the side at least obtaining three effective kisspoint learning values
Case, to cause learning process more to prepare, reliably；Although more effective learning values more have for follow-up definite value process
Benefit, but in practical operation, to consider the efficiency of self study, the present invention is it is not recommended that excessive study number, and certainly, this needs to tie
Depending on closing practical operation experience, the present invention is to this not specific restriction；Thus, can also be whereby it may be further contemplated, if desired
Judge whether learning process successfully completes, can also identify whether to obtain at least three kisspoint learning values, not up to three
It is individual, need repetitive learning.
After learning process efficiently accomplishes, followed by definite value process, it can be specifically included：
Step S13, the average value of the half hitch chalaza learning value obtained is calculated；
I.e. by multiple effective kisspoint learning values summations of foregoing acquisition, and divided by virtual value number, obtain
The average value of kisspoint learning values.
Finally, step S14 is performed, the average value is recorded as quasi integration presses force value；
By upper each process, the quasi integration for being finally obtained more accurate, reliable clutch presses force value.
By above to the specific descriptions of the present invention, it is seen that the present invention and its preferred scheme be easily achieved, be easy to apply, can
Strong operability and data acquisition convenience, and the control for vehicle need not be related to, such as regulation speed, engine and braking
System etc., so as to reduce the assembling demand of wet dual-clutch automatic transmission and vehicle, make the scope of application of the present invention more
It is wide in range, especially it is easy to implement the offline self study of wet dual-clutch automatic transmission.
It is described in detail construction, feature and the action effect of the present invention according to the embodiment shown in schema above, but more than
For the only presently preferred embodiments of the present invention, it is necessary to explain, the technology involved by above-described embodiment and its preferred embodiment is special
Sign, those skilled in the art can be on the premise of not departing from, not changing mentality of designing and the technique effect of the present invention, rationally
Ground combination collocation is into a variety of equivalents；Therefore, the present invention is every according to the present invention's not to limit practical range shown in drawing
The made change of conception, or the equivalent embodiment of equivalent variations is revised as, still without departing from specification with illustrating covered spirit
When, all should be within the scope of the present invention.
Claims (7)
- A kind of 1. half hitch chalaza self-learning method of wet dual-clutch automatic transmission, it is characterised in that including：It is calibrated Journey, learning process and definite value process；The calibration process includes：It is determined that after the completion of the main hydraulic pressure foundation of clutch, the driving current for driving oil circuit magnetic valve is exported；Detect gear signal, clutch pressure and the driving current；When gear is neutral gear, the driving current is lifted by default first slope, the clutch pressure is increased；When the clutch pressure rises to default minimum quasi integration pressure value, the driving current now is recorded as most Smaller part binding site electric current；When the clutch pressure rises to maximum half default combination pressure value, the driving current now is recorded as most More than half binding site electric current；Stop exporting the driving current；The learning process includes：The driving current is exported, and the driving current is equal to the minimum half hitch chalaza electric current；The driving current is lifted by default second slope, and detects the rate of change of clutch pressure；Before the driving current rises to maximum half described binding site electric current, when the rate of change is more than default speed threshold It is worth and the clutch pressure now during maximum half combination pressure value, is recorded as half hitch by the clutch pressure less than described in Chalaza learning value；Stop exporting the driving current, and repeat the learning process, until obtaining at least three half hitch chalaza study Value；The definite value process includes：Calculate the average value of the half hitch chalaza learning value obtained；The average value is recorded as quasi integration and presses force value.
- 2. according to the method for claim 1, it is characterised in that also include：In the calibration process, stop after exporting the driving current, if the clutch pressure is less than or equal to default Pressure threshold, then perform the learning process.
- 3. according to the method for claim 2, it is characterised in that described the driving current is equal to the minimum quasi integration Point electric current includes：The driving current is equal to the minimum half hitch chalaza electric current and kept for a default response time.
- 4. according to the method for claim 3, it is characterised in that also include：In the learning process, when the clutch pressure is more than or equal to maximum half described combination pressure value, stop output The driving current, and repeat the learning process.
- 5. according to the method for claim 4, it is characterised in that also include：In the learning process, when the driving current reaches maximum half described binding site electric current, stop exporting the drive Streaming current, and repeat the learning process.
- 6. according to the method described in any one of Claims 1 to 5, it is characterised in that also include：Before it is determined that clutch establishes main hydraulic pressure, control for driving the motor of gear box oil pump to operate, and detect the electricity The rotating speed of machine.
- 7. according to the method described in any one of claim 6, it is characterised in that also include：If the rotating speed exceeds default rotary speed threshold value, it is determined that the main hydraulic pressure of clutch, which is established, to be completed.
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| CN201710821176.7A CN107387599B (en) | 2017-09-12 | 2017-09-12 | The half hitch chalaza self-learning method of wet dual-clutch automatic transmission |
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| CN201710821176.7A CN107387599B (en) | 2017-09-12 | 2017-09-12 | The half hitch chalaza self-learning method of wet dual-clutch automatic transmission |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108374890A (en) * | 2018-02-23 | 2018-08-07 | 安徽江淮汽车集团股份有限公司 | A kind of clutch engagement pressure self-learning method of double clutch gearbox |
| CN109185448A (en) * | 2018-09-30 | 2019-01-11 | 安徽江淮汽车集团股份有限公司 | A kind of wet-type dual-clutch transmission half hitch chalaza Fast Learning method and module |
| CN109990015A (en) * | 2017-12-29 | 2019-07-09 | 长城汽车股份有限公司 | The self-learning method of double clutch half hitch chalaza |
| CN110081095A (en) * | 2019-05-21 | 2019-08-02 | 安徽江淮汽车集团股份有限公司 | Vehicle solenoid valve matches application method, device, equipment and storage medium |
| CN110737284A (en) * | 2019-09-06 | 2020-01-31 | 深圳市兆威机电股份有限公司 | Position adjusting method and device of transmission mechanism, terminal equipment and medium |
| CN111963673A (en) * | 2019-05-20 | 2020-11-20 | 上海汽车集团股份有限公司 | Self-learning method and system for half-joint point of wet-type double-clutch transmission |
| CN111963674A (en) * | 2019-05-20 | 2020-11-20 | 上海汽车集团股份有限公司 | Self-learning method and system for pre-pressure of wet-type double-clutch transmission |
| CN112628393A (en) * | 2021-02-18 | 2021-04-09 | 雷沃工程机械集团有限公司 | Loader electronic control planetary gearbox calibration method |
| CN112677901A (en) * | 2019-10-17 | 2021-04-20 | 阿尔特汽车技术股份有限公司 | Fault alarm output method for electromagnetic clutch of hybrid electric vehicle |
| CN114151469A (en) * | 2021-12-01 | 2022-03-08 | 中国第一汽车股份有限公司 | Self-learning control method, device, equipment and medium for clutch half-joint point position |
| CN114576284A (en) * | 2022-02-28 | 2022-06-03 | 潍柴雷沃重工股份有限公司 | Clutch starting control method and device, electronic equipment, medium and tractor |
| CN114738399A (en) * | 2022-02-28 | 2022-07-12 | 重庆青山工业有限责任公司 | Pressure zero point self-adaptive control method for wet DCT (dual clutch transmission) |
| CN115143209A (en) * | 2022-05-26 | 2022-10-04 | 潍柴动力股份有限公司 | Vehicle clutch self-learning method, device, equipment, medium and vehicle |
| CN115280033A (en) * | 2020-02-18 | 2022-11-01 | 邦奇动力Psa电子变速箱有限责任公司 | Method for determining a clutch half-engagement point |
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