A Synchronizer Shift Fault Adaptive Control Method

Abstract

The invention discloses a synchronizer gear-shifting fault adaptive control method. The control method comprises the steps of driving a shifting fork through a driving component after verifying that the driving component of the shifting fork works, so that the shifting fork is switched among different positions and the purpose of adaptive recovery processing of synchronizer gear-shifting fault is achieved; at the same time, recording the displacement values of the shifting fork at different positions, and judging whether the synchronizer gear-shifting fault is removed finally; and if the synchronizer gear-shifting fault is not removed, perform repair. According to the control method disclosed by the invention, adaptive recovery of accidents can be conducted, and complex operations, such as unnecessary clutch release, are avoided; the service life of a transmission is prolonged, and the user convenience is also improved greatly; moreover, with the control method, whether gear-shifting fault occurs in a synchronizer can be judged accurately so as to facilitate people to repair equipment in time, and the customer satisfaction is improved greatly.

Description

technical field [0001] The invention relates to the field of vehicle transmission, in particular to an adaptive control method for synchronizer gear shift failure. Background technique [0002] Dual-clutch automatic transmission includes two coaxial nested or parallel arranged clutches, coaxial, inner and outer inner and outer nested input shafts and outer input shafts, output shafts, multiple synchronizer devices arranged on the output shafts, multiple It consists of a shift fork and a differential. The driving gears of the odd and even gears of the transmission are arranged on the inner and outer input shafts respectively, through the switching of two clutches and the actions of different synchronizers, torque conversion and output are realized. [0003] The main components of the shift mechanism are the synchronizer device and the shift fork. The shift fork is supported by the linear bearing in the shift piston cylinder liner. The shift piston cylinder liner is pressed o...

AI Technical Summary

Problems solved by technology

[0005] During the shifting process, there will always be faults such as stuck, unable to complete the operation of engaging or removing the gear for a long time, and the displacement value of the shift fork exceeds the limit. Such faults are sometimes only occasional accidents. After the fork, it can return to normal. However, when such a fault occurs in the current gearbox, it generally disengages the corresponding clutch directly, waits for the fault to recover after restarting, or manually checks the fault, and cannot carry out relevant adaptive recovery measures, which affects the gearbox. Service life and customer word of mouth

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