Control method and device for clutch
A control method and control device technology, which is applied in the direction of transmission control, components with teeth, belts/chains/gears, etc., can solve problems such as vibration and impact, affecting ride comfort, etc.
Active Publication Date: 2017-04-19
SAIC MOTOR
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Problems solved by technology
[0005] However, in the above method, it usually takes a long time to control the clutch to be in a stable micro-slip state, resulting in a certain vibration shock when the vehicle starts and shifts, which affects the ride comfort.
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[0040] At present, when the clutch is controlled to be in a stable micro-slip state, the torque to be output by the clutch is controlled according to the rotational speed difference between the driving plate and the driven plate of the clutch by acquiring the acquired rotational speed difference. In the above control method, it usually takes a long time to make the clutch be in a stable micro-slip state, resulting in a certain vibration shock when the vehicle starts and shifts, which affects the ride comfort.
[0041] In view of the above problems, the embodiment of the present invention provides a clutch control method, the method controls the decrease speed of the output torque value of the clutch, and the rotation speed between the driving plate and the driven plate of the clutch When the difference is equal to the first speed difference, the torque output by the clutch is controlled, instead of controlling the torque output by the clutch only through the current speed diffe...
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The invention provides a control method and device for a clutch. The control method includes: acquiring a torque value outputted by an engine; controlling a torque value outputted by a clutch to decrease to the torque value outputted by the engine; controlling the torque value outputted by the clutch to decrease at the second speed while the torque value outputted by the clutch is equal to the torque value outputted by the engine, wherein the second speed is less than the first speed; acquiring a rotation speed difference between a drive sheet and a driven sheet when the clutch declines at the second speed; and controlling the torque outputted by the clutch according to the rotation speed difference between the drive sheet and the driven sheet while the rotation speed difference between the drive sheet and the driven sheet of the clutch is equal to a first rotation speed difference till the rotation speed difference between the drive sheet and the driven sheet of the clutch is equal to a target rotation speed difference, wherein the first rotation speed difference is less than the target rotation speed difference. The control method can rapidly control the clutch in a stable micro slip and friction state.
Description
technical field [0001] The invention relates to the field of clutch control, in particular to a clutch control method and device. Background technique [0002] In the transmission system of a car, the clutch is located between the engine and the transmission, responsible for cutting off and engaging the power of the engine, which can ensure the smoothness of the car when starting and smooth shifting. [0003] As the mileage of the vehicle increases, there will be a certain degree of wear and tear on the clutch. The wear and tear of the clutch will cause the output torque of the clutch to change, which will eventually lead to the decline of the starting and shifting performance of the vehicle. [0004] In view of the above situation, the current general practice is: first control the clutch from the locked state to a stable micro-slip state; when the clutch is in a stable micro-slip state, calculate the difference between the torque to be output by the clutch and the actual ...
Claims
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IPC IPC(8): F16H59/56F16H59/14
CPCF16H59/14F16H59/56F16H2059/147
Inventor 冯巍焦伟边淑伟张德明孙贤安虞璐伊周海君
Owner SAIC MOTOR