Method and device for adjusting torque of vehicle

Abstract

The invention discloses a method and device for adjusting the torque of a vehicle. The vehicle comprises a first power source and a second power source. The method comprises steps that the first torque outputted by the first power source is obtained; if the first torque is greater than the maximum torque outputted by the first power source, the torque change rate of the second power source is determined as a first rate; if the first torque is smaller than or equal to the maximum torque outputted by the first power source, the torque change rate of the second power source is determined as a second rate; the first rate is smaller than the second rate, namely, when the first torque outputted by the first power source does not reach the maximum torque outputted by the first power source, the change rate of the torque output by the second power source is increased so as to increase the gear shifting speed; when the first torque outputted by the first power source reaches the maximum torqueoutputted by the first power source, the change rate of the torque outputted by the second power source is decreased to optimize the driving comfort, and the driving comfort of the vehicle can be guaranteed on the premise that the gear shifting time is proper.

Description

technical field [0001] The present application relates to the field of vehicle control, in particular to a method and device for adjusting vehicle torque. Background technique [0002] With the development of vehicle technology, some vehicles such as new energy vehicles are usually equipped with multiple power sources in order to provide the maximum power for the vehicle, for example, two power sources, an engine and a motor, or two motors Wait. Correspondingly, in order to exert the torque capability of the power source, the car is often equipped with a two-speed or multi-speed gearbox. [0003] Since the car is equipped with multiple power sources, combined with a special multi-speed gearbox, it can make up for the lack of wheel end torque during the shifting process to the greatest extent. However, in the prior art, the power source increases and decreases torque at a constant rate of torque change. On the one hand, if the constant rate of change is relatively large, t...

AI Technical Summary

Problems solved by technology

On the one hand, if the constant rate of change is relatively large, the driving comfort will be deteriorated; on the other hand, if the constant rate of change is relatively small, the shifting time will be too long

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