The invention provides an engine crankshaft shutdown positioning method and an engine crankshaft shutdown positioning device.The method comprises the steps that under the condition that an engine of a hybrid power vehicle is shut down, a first rotating speed signal of the hybrid power vehicle and a steering signal of a generator are obtained, the first rotating speed signal represents rotating speed information of the engine and/or the generator at the acquisition time, and the steering signal represents the rotating direction of the generator; establishing a rotating speed-time coordinate system based on the acquisition time and the first rotating speed signal; determining a first integral time interval from a rotational speed-time coordinate system on the basis of a reversal signal in the event that the steering signal comprises the reversal signal, the reversal signal characterizing a reversal rotation; determining a first target rotating speed signal corresponding to the first integral time interval from the first rotating speed signal; and integral processing is conducted on the first target rotating speed signal, a first target integral value is obtained, and the first target integral value represents the stop position of the engine crankshaft under the reverse rotation condition of the engine.

    本申请提供了一种发动机曲轴停机定位方法和发动机曲轴停机定位装置,该方法包括在混合动力车辆的发动机停机的情况下,获取混合动力车辆的第一转速信号以及发电机的转向信号,其中,第一转速信号表征在采集时间下发动机和/或发电机的转速信息,转向信号表征发电机的转动方向;基于采集时间和第一转速信号建立转速‑时间坐标系;在转向信号包括反转信号的情况下,基于反转信号从转速‑时间坐标系中确定第一积分时间区间,其中,反转信号表征反向转动;从第一转速信号中确定与第一积分时间区间对应的第一目标转速信号;对第一目标转速信号进行积分处理,得到第一目标积分值,第一目标积分值表征发动机在反转情况下发动机曲轴的停机位置。


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    Title :

    Engine crankshaft shutdown positioning method and engine crankshaft shutdown positioning device


    Additional title:

    发动机曲轴停机定位方法和发动机曲轴停机定位装置


    Contributors:
    YUAN YUZHEN (author) / LIN ZHIQIANG (author) / ZHANG ZHUO (author)

    Publication date :

    2025-03-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    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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