Clutch control method and device, and vehicle

A control method and technology of a control device, applied in the direction of the control device, etc., can solve the problems of no power output of the vehicle, easy to cause danger, etc., and achieve the effect of avoiding the problem of slippage, avoiding overheating and wear, and reducing the frequency of wear and tear.

Active Publication Date: 2018-06-12
SAIC MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such a solution will cause the vehicle to suddenly have no power output, and if it is on an unsafe road section, it will easily cause danger

Method used

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  • Clutch control method and device, and vehicle
  • Clutch control method and device, and vehicle
  • Clutch control method and device, and vehicle

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Embodiment Construction

[0032] As mentioned above, when the torque difference and speed difference between the power source of the car and the clutch are large, the clutch will slip. Once the clutch plate slips, it is easy to generate and accumulate heat in the clutch, which will lead to clutch failure wear and tear. This problem is exacerbated by the faster torque response in automatic clutches.

[0033] However, in the prior art, when the heat accumulated on the clutch exceeds the heat threshold, the technical solution adopted is usually to directly disconnect the clutch, thereby cutting off the torque output from the power source to the transmission, which will cause the vehicle to suddenly have no power output. In unsafe road sections, it is easy to cause danger.

[0034] The inventors of the present invention have found through research that the key to the above problems is that when the heat accumulated on the clutch exceeds the heat threshold and slipping occurs, the torque transmission capac...

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Abstract

The invention provides a clutch control method and device, and a vehicle. The clutch control method comprises the steps that when a clutch is closed, a heat value produced by the clutch is accumulatedand calculated; and if the heat value obtained through accumulating and calculating is greater than or equal to a preset heat threshold value, an upper limit value of output torque of the power source is controlled to be decreased on the basis of an upper limit value of the current output torque. According to the scheme, when the clutch loses efficacy seriously due to slipping overheating, continue energy supplying for the vehicle can be achieved, the probability of serious abrasion of the clutch can be decreased, and the buffering time can be provided for safe operation of a user.

Description

technical field [0001] The invention relates to the field of transmission system control of automobiles, in particular to a clutch control method, device and automobile. Background technique [0002] With the development of the automobile industry, the power performance of automobiles is improving day by day, and higher requirements are put forward for the output torque and torque response speed of the power source. [0003] As an important part of the transmission system of the car, the clutch is used to transmit or cut off the torque output from the power source to the transmission. Specifically, the power source may include an engine or an electric motor. When the power source is in contact with the clutch, the torque transmitted by the clutch can be gradually approached by the friction effect between the driving part and the driven part of the clutch. The output torque of the power source, the speed of the input shaft of the clutch is correspondingly gradually approachi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W10/06B60W10/08B60W10/02B60W40/00
CPCB60W10/02B60W10/06B60W10/08B60W40/00B60W2050/0043B60W2510/0291B60W2710/0666B60W2710/083
Inventor 孙俊张岩林双武赵允喜侯海潇
Owner SAIC MOTOR
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