In order to solve the problem of low engine heat efficiency caused by unstable engine torque in the prior art, the invention provides a vehicle torque determination method and device. The method comprises the steps of acquiring the state of charge and vehicle speed of a vehicle; determining the starting torque of an engine according to the state of charge and the vehicle speed; acquiring the accelerator pedal opening degree of the vehicle ; determining a required torque according to an accelerator pedal opening and the vehicle speed; comparing the required torque with the starting torque; if the required torque is larger than or equal to the starting torque, executing the torque control step and the torque control step comprises the steps of determining the target torque of the engine according to the vehicle speed, and performing correction according to air conditioner accessory power and current SOC; controlling the engine to output engine target torque; determining a motor target torque according to the required torque; controlling the motor to output motor target torque; and if the required torque is smaller than the starting torque, controlling the engine to stop running, andreturning to execute the step of acquiring the charge state and the vehicle speed of the vehicle.
为了解决现有技术中因发动机扭矩不稳定而导致的发动机热效率低的问题,本发明提出了一种车辆扭矩确定方法及装置。本发明车辆扭矩确定方法包括:获取车辆的荷电状态和车速;根据荷电状态和车速,确定发动机的启机扭矩;获取车辆的加速踏板开度;根据加速踏板开度和车速确定需求扭矩;比较需求扭矩和启机扭矩;如果需求扭矩大于或等于启机扭矩,执行扭矩控制步骤,扭矩控制步骤包括:根据车速确定发动机的目标扭矩,还根据空调附件功率、当前SOC做修正;控制发动机输出发动机目标扭矩;根据需求扭矩确定电机目标扭矩;控制电机输出电机目标扭矩;如果需求扭矩小于启机扭矩,控制发动机停止运行,返回执行获取车辆的荷电状态和车速的步骤。
Vehicle torque determination method and device
一种车辆扭矩确定方法及装置
2020-11-03
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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