The invention discloses an engine starting reverse dragging protection method for a hybrid power system, which comprises the following steps: acquiring the speed of a whole vehicle and the position of a gear shifting handle, and identifying the static state or the forward gear driving state of the vehicle according to the speed of the whole vehicle and the position of the gear shifting handle; if the vehicle is in the static state, the vehicle speed of the whole vehicle and the position of a gear shifting handle are verified, and the zero position of a motor is verified; and according to the target rotating speed of engine starting, the rotating speed and the torque of the generator are controlled according to a first rotating speed distribution formula: # imgabs0 #, engine starting is achieved, ns is the rotating speed of a sun gear, nc is the rotating speed of a planet carrier, and alpha is the mechanical distribution ratio. The engine can be prevented from being reversely dragged and damaged, the robustness and use comfort of the hybrid power system are improved, and energy consumption is reduced.
本发明公开了一种用于混动系统的发动机启动反拖保护方法,包括:获取整车车速和换挡手柄位置,并根据所述整车车速和所述换挡手柄位置进行车辆的静止状态或前进挡行驶状态识别;如果车辆处于静止状态,则对所述整车车速和换挡手柄位置进行校验,以及对电机零位进行校验;根据发动机启动的目标转速,按第一转速分配公式:#imgabs0#,控制发电机转速和发电机扭矩,实现发动机启动,其中,ns太阳轮转速,nc为行星架转速,α为机械分配比。本发明能避免发动机被反拖损坏,提高混动系统的鲁棒性和使用舒适性,减少能耗。
Engine starting reverse dragging protection method for hybrid power system
一种用于混动系统的发动机启动反拖保护方法
2024-11-29
Patent
Electronic Resource
Chinese
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