The invention discloses an engine stop control method and a related device, and the method comprises the steps: responding to an obtained stop instruction, determining a first reverse torque opposite to the torque direction of an engine, and controlling the engine according to the first reverse torque. And if the rotating speed of the engine is smaller than or equal to the idle speed of the engine, the current rotating speed of the engine in the ith second and the optimal rotating speed of the engine in the ith second are obtained, the second reverse torque in the ith second is determined according to the difference between the current rotating speed of the engine in the ith second and the optimal rotating speed of the engine in the ith second, and the engine is controlled according to the second reverse torque in the ith second. If the rotating speed of the engine is smaller than or equal to the first rotating speed threshold value, an output shaft of the engine is locked through a brake till the rotating speed of the engine does not change any more. Therefore, the engine is controlled in different modes in different stages of the shutdown process of the engine, so that the requirements corresponding to the different stages are met, and the vibration suppression effect is improved.
本申请公开了一种发动机停机控制方法及相关装置,方法包括:响应于获取停机指令,确定与发动机的扭矩方向相反的第一反向扭矩,根据第一反向扭矩控制发动机。若发动机转速小于或等于发动机怠速,则获取第i秒的当前发动机转速和第i秒的发动机最优转速,根据第i秒的当前发动机转速和第i秒的发动机最优转速之间的第i秒差异,确定第i秒的第二反向扭矩,根据第i秒的第二反向扭矩控制发动机。若发动机转速小于或等于第一转速阈值,则通过制动器锁止发动机的输出轴,直至发动机转速不再发生改变。由此,在发动机停机过程的不同阶段采用不同的方式控制发动机从而满足不同阶段分别对应的需求,提高抑制振动的效果。
Engine shutdown control method and related device
一种发动机停机控制方法及相关装置
2025-01-14
Patent
Electronic Resource
Chinese
IPC: | B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion |
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