Clutch physical slip grinding coefficient correcting method and device

Abstract

The invention provides a clutch physical slip grinding coefficient correcting method and device. The clutch physical slip grinding coefficient correcting method comprises the following steps that according to the position relation between an engine and a clutch, the torque difference is obtained, a correction weight corresponding to the torque of the engine is obtained according to the torque difference, and the physical slip grinding coefficient is corrected according to the correction weight and the grinding-in state of the clutch. According to the clutch physical slip grinding coefficient correcting method, through the position relation between the engine and the clutch, the torque difference is obtained by means of a mode corresponding to the position relation so that the torque difference can be obtained in real time, moreover, the correction weight corresponding to the torque of the engine can be obtained according to the torque difference, then the physical slip grinding coefficient is corrected according to the correction weight and the grinding-in state of the clutch, so that the situation that the physical slip grinding coefficient can be corrected only under the condition that the rotating speed difference interval is relatively small is avoided, the physical slip grinding coefficient can be corrected at any time, and comprehensiveness and flexibility of correcting the physical slip grinding coefficient are improved.

Description

technical field [0001] The invention relates to the technical field of vehicle control, in particular to a method and device for correcting the physical friction coefficient of a clutch. Background technique [0002] With the continuous development of the automobile industry, vehicles gradually use wet dual clutches to transmit engine torque. However, the wet dual clutch will wear out during use, which will cause changes in the physical friction coefficient of the clutch. Therefore, it is necessary to correct the physical friction coefficient of the clutch. [0003] In the related technology, the vehicle can calculate the physical slip coefficient according to the engine torque and the clutch pressure, and continuously calculate multiple physical slip coefficients, and then calculate the average physical slip coefficient, and finally can calculate the physical slip coefficient according to the transmission oil temperature, clutch pressure and clutch slip. The average physi...

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Problems solved by technology

[0005] In view of this, the present invention aims to propose a method for correcting the physical slip coefficient of the clutch to solve the problem that the physical slip coefficient can only be corrected for a certain stage, resulting in incomplete correction of the physical slip coefficient

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