The invention provides a four-wheel-drive vehicle output torque control method, a hybrid power system and a vehicle. The control method comprises an output torque limiting strategy executed in the process of switching a two-wheel-drive mode to a four-wheel-drive mode, and an output torque correcting strategy executed when the vehicle exists in the front set distance range. Wherein the output torque limiting strategy comprises the steps that whether a driven wheel has a torque input requirement or not is judged, and only when the driven wheel has the torque input requirement, the two-wheel drive mode is switched to the four-wheel drive mode; the output torque correction strategy comprises the steps that the front vehicle speed, the vehicle speed and the vehicle following distance are obtained, and the vehicle following safety distance is preset; calculating a safe acceleration; an output torque determined on the basis of a change in the opening degree of an accelerator pedal is corrected to control an actual acceleration obtained from the actual output torque to be equal to or less than a safe acceleration. According to the control method, the economical efficiency and safety of vehicle operation can be improved.

    本发明提供了一种四驱车辆输出扭矩的控制方法、混合动力系统及车辆,本发明的控制方法包括在两驱模式切换四驱模式过程中执行的输出扭矩限制策略,以及在前方设定的距离范围内存在车辆时执行的输出扭矩修正策略。其中,输出扭矩限制策略包括:判断从动车轮是否存在扭矩输入需求,仅在从动车轮存在扭矩输入需求时,才由两驱模式切换至四驱模式;输出扭矩修正策略包括:获取前车速度、本车速度和跟车距离,并预设跟车安全距离;计算出安全加速度;修正基于油门踏板开度变化而确定的输出扭矩,以将实际输出扭矩所获得的实际加速度控制在安全加速度以下。本发明的控制方法,有利于提升车辆运行的经济性和安全性。


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    Titel :

    Control method for output torque of four-wheel-drive vehicle, hybrid power system and vehicle


    Weitere Titelangaben:

    四驱车辆输出扭矩的控制方法、混合动力系统及车辆


    Beteiligte:
    CAO GAOYANG (Autor:in) / LUO CONGCONG (Autor:in) / WANG DONGFENG (Autor:in)

    Erscheinungsdatum :

    2023-08-04


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    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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