A manual mode shift control method and vehicle

Abstract

The present invention relates to the technical field of vehicles, and in particular to a manual mode shift control method and a vehicle. The manual mode shift control method includes the following steps: the vehicle travels in the manually controlled M gear, and the wheel speed of the active wheels of the vehicle is obtained as no d , get the wheel speed of the driven wheel as n p ; Calculate the wheel speed difference Δn, Δn=n d ‑n p ;Judge whether the wheel speed difference △n is greater than the wheel difference threshold △n T , if yes, execute the slip control strategy, if not, judge whether the slope value of the vehicle driving is greater than the set slope threshold within the set time, if yes, judge whether the number of changes in the vehicle’s driving direction is greater than the set change threshold , if yes, the automatic transmission prohibits automatic upshifting, if not, the automatic transmission is controlled according to the set shift control strategy. The invention can take into account power driving and vehicle escape when the vehicle is in the manual mode, and improves the performance of the whole vehicle.

Description

technical field [0001] The present invention relates to the technical field of vehicles, and in particular, to a manual mode shift control method and a vehicle. Background technique [0002] With the development of the vehicle industry, more and more vehicles have entered the field of production and life. In order to reduce the difficulty of shifting gears for the driver, more and more vehicles are automatically shifting. [0003] The automatic transmission can automatically shift gears according to the vehicle speed and the driver's accelerator pedal input. When the driver puts the shift handle in the manual mode position, it can be realized according to the driver's input to the shift handle, that is, according to the driver's driving intention. Shifting operation of the transmission. Usually, the manual mode is generally used for the driver's subjective intentions such as power driving, getting out of trouble and wading. For the rescue application, the existing technol...

AI Technical Summary

Problems solved by technology

However, the existing technology only considers the application of manual mode for getting out of trouble, and does not take into account the application of driving dynamics in manual mode; secondly, the existing technology focuses on improving wheel torque and power to achieve vehicle getting out of trouble, but when the vehicle is trapped and encounters On low-adhesion road surfaces (such as mud pits and snowy ground), a larger wheel torque is not conducive to the vehicle's escape

In the prior art, it is impossible to take into account the dynamic driving and vehicle escape, which makes the performance of the whole vehicle decrease

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