Gear switching control method for automatic transmission of wet dual clutch

Abstract

The invention discloses a gear switching control method for an automatic transmission of a wet dual clutch. Control on a shifting fork is changed into closed-loop control from the traditional open-loop control by optimization of a gear engagement and separation control strategy, feedback is carried out when error exists between the measured actual displacement of the shifting fork and the expected displacement, and then the displacement of the shifting fork is controlled effectively. Compared with the prior art, the gear switching control method for the automatic transmission of the wet dual clutch has the advantages that the precision of control on the position of the shifting fork can be improved, furthermore, reliability and comfort of gear shifting can be improved, impact and noises during gear shifting are reduced, the gear shifting quality is improved, and the problem that vibration and noises are caused by the reason that the shifting fork cannot be engaged or is engaged too fast is avoided.

Description

technical field [0001] The invention relates to the technical field of gearbox control, in particular to a gear switching control method of a wet double-clutch automatic gearbox. Background technique [0002] Dual-clutch automatic transmission combines the advantages of manual transmission and hydraulic automatic transmission. It has high transmission efficiency and simple structure, which not only improves the power and economy of the vehicle, but also greatly improves the driving comfort of the vehicle. [0003] Since the shifting time of the dual-clutch automatic transmission is extremely short, in order to meet the needs of fast shifting, the combination or separation control of gears must be carried out quickly and smoothly. The combination and separation of the gears of the dual clutch automatic transmission is realized by controlling the movement of the shift fork, and the shift fork control strategy has an important impact on the performance and service life of the d...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a gear switching control method of a wet dual-clutch automatic transmission to solve the technical problem of insufficient control precision of the shift fork displacement of the wet dual-clutch automatic transmission in the prior art. Fork displacement control logic can improve the control accuracy of fork displacement

Images