The invention provides systems and methods for controlling stop/start events for a hybrid electric vehicle. Methods and systems are provided for controlling engine operation in a hybrid electric vehicle equipped with stop/start capabilities under conditions where requested power or torque is in a hysteresis region between an engine pull up threshold and an engine pull down threshold. In one example, a method comprises obtaining an adjusted engine pull down threshold upon the requested power or torque remaining in the hysteresis region for more than a threshold duration, and commanding the engine deactivated in response to the adjusted engine pull down threshold being equivalent to the requested power or torque. In this way, a motor/generator may be used to meet the requested torque response rather than the engine under such conditions, which may improve fuel economy.

    本公开提供了“用于控制混合动力电动车辆的启停事件的系统和方法”。提供了多种方法和系统,用于在配备有启停功能的混合动力电动车辆中在所请求的功率或扭矩处于发动机上拉阈值与发动机下拉阈值之间的滞后区域中的情况下控制发动机操作。在一个示例中,一种方法包括:当所述请求功率或扭矩保持在所述滞后区域中超过阈值持续时间时,获得调整后的发动机下拉阈值;以及响应于所述调整后的发动机下拉阈值等于所述请求功率或扭矩而命令停用所述发动机。通过这种方式,在此类情况下可以使用马达/发电机而不是发动机来满足请求扭矩响应,这可以提高燃料经济性。


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    Title :

    Systems and methods for controlling stop/start events for a hybrid electric vehicle


    Additional title:

    用于控制混合动力电动车辆的启停事件的系统和方法


    Contributors:
    BOLTHOUSE ALEC (author) / LEE MINKU (author)

    Publication date :

    2020-10-30


    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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