The invention discloses a method for operating a drive train of a motor vehicle, which utilizes at least one permanent-magnet electric machine (EM) as a motor vehicle drive source. A transmission (G) with different gear ratios is arranged in a power path between the electric machine (EM) and driving wheels (DW) of the motor vehicle. A power converter (LE) is associated with the electric machine (EM) and can operate the electric machine (EM) in a field weakening condition. The method includes prematurely carrying out, delaying, or preventing a changeover of the gear step of the transmission (G) specified by a driving strategy depending on a temperature value of the electric machine (EM) in order to reduce, not increase, or increase with delay a rotational speed of the electric machine (EM). An electronic control unit (ECU) for carrying out the method and a motor vehicle with the control unit (ECU) are also provided.

    本发明公开了一种用于操作机动车辆的动力传动系的方法,该动力传动系使用至少一个永久励磁的电动机器(EM)作为机动车辆驱动源,其中在力流中将具有不同挡位级的变速器(G)布置在电动机器(EM)与机动车辆的驱动车轮(DW)之间,其中电动机器(EM)指配有变流器(LE),该变流器可以使电动机器(EM)在弱磁状态下运行,其中取决于电动机器(EM)和/或变流器(LE)的温度值提前执行、延迟或者防止由驾驶策略预先给定的变速器(G)的挡位级的变换,以便降低、不提高或者延迟地提高电动机器(EM)的转速;以及公开了一种用于执行这种方法的电子控制单元(ECU);还公开了一种具有这种控制单元(ECU)的机动车辆。


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    Title :

    Method for Operating drive train of motor vehicle


    Additional title:

    用于操作机动车辆动力传动系的方法


    Contributors:
    BUHLE FELIX (author)

    Publication date :

    2021-10-19


    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 / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / F16H Getriebe , GEARING / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern



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