Slipping control method for automatic transmission of wet double clutch

Abstract

The invention discloses a slipping control method for an automatic transmission of a wet double clutch. According to the slipping control method, whether slipping control of the clutch is triggered or not is judged by monitoring the driving state of a whole vehicle; besides, the slipping rate of the clutch in the current gear is controlled at a target slipping rate, so that the clutch is ensured to fully transmit power and absorb bumping of the whole vehicle caused by uneven road surfaces or sudden change of the slope of an accelerator pedal. According to the slipping control method, the algorithm is easy to implement and apply, the operability is high, data acquisition is convenient, compared with other domestic wet double clutches, a function of control on the slipping rate of the clutch is added, the driving comfort of the whole vehicle is enhanced, and the service life of the clutch is prolonged.

Description

technical field [0001] The invention relates to the technical field of automobile transmissions, in particular to a slipping control method of a wet dual-clutch automatic transmission. Background technique [0002] A typical wet dual clutch automatic transmission has two clutches, inner and outer. The outer clutch is connected with the outer input shaft and controls odd-numbered gears. The outer clutch is also called the first clutch; the inner clutch is connected with the inner input shaft and controls the even-numbered gears. The inner clutch is also called the second clutch. Electro-hydraulic control is used to drive the solenoid valve to realize the gear change and the alternate work of the clutch, and finally realize the automatic shifting. [0003] At present, the wet dual-clutch automatic transmission does not have the function of specifically and systematically controlling the slippage of the clutch. During the normal driving process of the vehicle, the clutch must ...

AI Technical Summary

Problems solved by technology

If the slipping rate of the clutch is too high, the power cannot be fully transmitted, and at the same time, high heat will be generated, which will affect the service life of the clutch; if the slipping rate of the clutch is too low, the driving disc and the driven disc of the clutch will be almost completely combined, It will cause slight unevenness on the road surface or sudden changes in the accelerator pedal to cause vehicle bumps, which will affect the driving comfort of the vehicle.

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