Manual mode gear shifting control method and vehicle

Abstract

The invention relates to the technical field of vehicles, in particular to a manual mode gear shifting control method and a vehicle. The manual mode gear shifting control method comprises the following steps that the vehicle runs at a manually-controlled M gear, the wheel speed nd of a driving wheel of the vehicle is obtained, and the wheel speed np of a driven wheel of the vehicle is obtained; a wheel speed difference value delta n is obtained through calculation, delta n=nd-np; whether the wheel speed difference value delta n is larger than a wheel difference threshold value delta nT or not is judged, if the wheel speed difference value delta n is larger than the wheel difference threshold value delta nT, a slip control strategy is executed, if the wheel speed difference value delta n is not larger than the wheel difference threshold value delta nT, whether the gradient value of vehicle running is larger than a set gradient threshold value within set time or not is judged, if the gradient value of vehicle running is larger than the set gradient threshold value within the set time, whether the number of changes of the running direction of the vehicle is larger than a set change threshold value or not is judged, if the number of changes of the running direction of the vehicle is larger than the set change threshold value, an automatic transmission forbids automatic upshift, and if the number of changes of the running direction of the vehicle is not larger than the set change threshold value, the automatic transmission is controlled according to the set gear shifting control strategy. When the vehicle is in the manual mode, both dynamic running and vehicle escape can be considered, and the performance of the whole vehicle is improved.

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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