Double clutch transmission gear pre-engagement control method and system as well as vehicle

Abstract

The invention discloses a double clutch transmission gear pre-engagement control method. The double clutch transmission gear pre-engagement control method comprises the following steps: in a non-pre-engagement state, identifying the current gear position of a vehicle, and determining the current gear input shaft and the non-current gear input shaft according to the current gear position; controlling all gear shifting forks of the non-current gear input shaft to be in the neutral gear position; and when judging that the vehicle meets the preset gear shifting condition according to running parameters of the vehicle, controlling the non-current gear clutch to be disengaged, and engaging the target gear, corresponding to the running parameters, on the non-current gear input shaft, wherein the running parameters of the vehicle comprise the current vehicle speed. The invention further provides a double clutch transmission gear pre-engagement control system as well as the vehicle. According to the double clutch transmission gear pre-engagement control method and system as well as the vehicle, the prejudgment and pre-engagement accuracy and efficiency are improved, and the problems that the clutch is ablated or a gear component has a transient failure due to long-time simultaneous engagement of an odd-numbered gear and an even-numbered gear during the non-gear shifting process of the transmission are avoided.

Description

technical field [0001] The invention relates to the field of dual-clutch transmissions, in particular to a pre-engagement control method, system and vehicle of the dual-clutch transmission. Background technique [0002] Based on target gear pre-engagement and dual-clutch seamless interaction, dual-clutch transmission realizes fast shifting without power interruption, improves vehicle fuel economy and power performance, and has developed rapidly all over the world, especially in Eurasia. Target gear pre-engagement means that the dual-clutch transmission pre-hangs the gear shift fork to the target gear position before shifting gears. It is an important part of the dual-clutch transmission control technology. Response speed has an important impact. [0003] The dual-clutch transmission includes a wet dual-clutch transmission and a dry dual-clutch transmission. The two clutches of the wet dual-clutch transmission are immersed in oil. When the clutch is open and the correspondin...

AI Technical Summary

Problems solved by technology

[0006] 1. Due to the variability of the driver's driving intention, premature prediction and pre-engagement of the target gear will inevitably increase the probability of misjudgment and mis-engagement, increase unnecessary gear shifting and disengagement actions, and shorten the life of the synchronizer components. The life cycle

[0007] 2. The transmission engages odd and even gears at the same time for a long time during the non-shifting p

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