The embodiment of the invention discloses a torque control method for an electric four-wheel drive automobile, which comprises the following steps: judging whether a brake pedal is opened or not whendetermining that the driving torque demand of the electric four-wheel drive automobile is a negative value; if not, determining the recovery torque demand value to be a first recovery torque demand value, determining the front wheel end recovery torque coefficient to be a first front wheel end recovery torque coefficient, and determining the rear wheel end recovery torque coefficient to be a firstrear wheel end recovery torque coefficient; determining a front wheel end recovery torque demand value and a rear wheel end recovery torque demand value according to the first recovery torque demandvalue, the first front wheel end recovery torque coefficient and the first rear wheel end recovery torque coefficient, wherein the recovery torque coefficient of the wheel end of the first front wheelis 1, and the recovery torque coefficient of the wheel end of the first rear wheel is 0. Therefore, the effects of optimizing the impact in the torque zero-crossing stage and improving the driving response are achieved.
本发明实施例公开了一种电动四驱汽车扭矩控制方法,包括:确定电动四驱汽车的驱动扭矩需求为负值时,判断制动踏板是否开启;若否,则确定回收扭矩需求值为第一回收扭矩需求值以及前轮轮端回收扭矩系数为第一前轮轮端回收扭矩系数和后轮轮端回收扭矩系数为第一后轮轮端回收扭矩系数;根据所述第一回收扭矩需求值、所述第一前轮轮端回收扭矩系数和所述第一后轮轮端回收扭矩系数确定前轮轮端回收扭矩需求值和后轮轮端回收扭矩需求值;其中,所述第一前轮轮端回收扭矩系数为1,所述第一后轮轮端回收扭矩系数为0。以实现优化扭矩过零阶段冲击、提高驾驶响应的效果。
Driving torque control method for electric four-wheel drive automobile
一种电动四驱汽车驱动扭矩控制方法
2020-09-11
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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