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Control method and device for clutch

A control method and a technology of a control device, which are applied to clutches, transmission control, components with teeth, etc., can solve problems such as the degradation of shifting performance, and achieve the effect of improving shifting performance

Active Publication Date: 2017-04-19
SAIC MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, using the same clutch target torque to control the upshift speed of the vehicle will result in a decrease in the shift performance of the vehicle

Method used

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  • Control method and device for clutch
  • Control method and device for clutch
  • Control method and device for clutch

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Embodiment Construction

[0039] At present, during the upshifting process of the vehicle, the output torque of the clutch is usually controlled by using a preset target torque value of the clutch. When the characteristics of the engine and the gearbox change, the preset clutch target torque value cannot be adaptively adjusted, resulting in a longer shifting time of the vehicle, and there may be a certain vibration shock.

[0040] In view of the above problems, the embodiment of the present invention provides a clutch control method, the method obtains the decrease speed of the engine speed during the i-time upshift of the vehicle, and compares the obtained decrease speed of the engine speed with the target drop Speeds are compared, and then the target torque of the clutch during the i+1th upshift period of the vehicle can be adjusted according to the comparison results to adapt to the characteristics of the engine and gearbox in different vehicles or at different times in the same vehicle, so that all ...

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Abstract

Provided is a control method and device for a clutch. The method comprises the steps that an actual descending speed of the engine rotating speed during the i-th upshift of a vehicle is acquired, wherein i is a positive integer; the actual descending speed of the engine rotating speed is compared with the target descending speed; and when the actual descending speed of the engine rotating speed is not equal to the target descending speed, the target torque of the clutch during the i+1th upshift of the vehicle is adjusted according to the comparison result till the actual descending speed of the engine rotating speed reaches the target descending speed during the i-th upshift of the vehicle. By the adoption of the method, the gear shift performance of the vehicle can be improved.

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. It is responsible for cutting off and engaging the power of the engine, which can ensure smooth shifting of the car. [0003] At present, when a vehicle is upshifted from the current gear to the target gear, the upshift speed of the vehicle is usually controlled by setting the target torque of the clutch, so that the engine can transition from the speed corresponding to the current gear to the target gear. The speed corresponding to the target gear. [0004] However, there may be differences in the components and assembly of the engine and gearbox of different vehicles. Even within the same vehicle, the characteristics of the engine and transmission change as the vehicle's mileage increases. Therefore, using the same...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D48/06F16H61/02
CPCF16D48/06F16H61/02F16H61/0204
Inventor 冯巍焦伟边淑伟张德明孙贤安虞璐伊周海君
Owner SAIC MOTOR
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