The invention provides a torque distribution method and a torque distribution device for a hybrid electric vehicle, and belongs to the technical field of vehicles. The technical problem of how to improve the working efficiency of an engine when an existing hybrid electric vehicle runs on an urban road is solved. The method comprises the steps: starting an engine according to the opening degree ofan accelerator pedal, making the engine work under a steady-state high-efficiency working condition, and executing the engine steady-state torque under the working condition; setting a parameter tableof the engine target torque: when the driver demand torque is less than or equal to the engine steady-state torque, using the engine basic torque as the engine steady-state torque, otherwise, using the engine basic torque as the driver demand torque; looking up the parameter table to obtain the engine target torque, taking the negative torque of the motor as the execution torque of the motor whenthe steady-state torque of the engine is kept, and enabling the motor to be in a power generation mode to enable the engine to keep working under steady-state and high-efficiency working conditions.The working efficiency of the engine during urban road driving is improved.

    本发明提供了一种用于混合动力汽车的扭矩分配方法和扭矩分配装置,属于汽车技术领域。它解决了现有混合动力汽车如何在城市道路行驶时提高发动机的工作效率技术问题。该方法包括:根据加速踏板开度启动发动机,并使发动机工作在稳态高效率工况下,并执行该工况下的发动机稳态扭矩;设置发动机目标扭矩的参数表:当驾驶员需求扭矩小于等于发动机稳态扭矩时,发动机基础扭矩为发动机稳态扭矩,反之,发动机基础扭矩为驾驶员需求扭矩;查找参数表得到发动机目标扭矩,保持执行发动机稳态扭矩时,将电机的负扭矩作为电机的执行扭矩,让电机处于发电模式使发动机保持工作在稳态高效率工况下。本发明提高了城市道路行驶时发动机的工作效率。


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    Title :

    Torque distribution method and torque distribution device for hybrid electric vehicle


    Additional title:

    一种用于混合动力汽车的扭矩分配方法和扭矩分配装置


    Contributors:
    GUO SIYANG (author) / JIANG BO (author) / YANG CHAOQUN (author) / WANG LAIQIAN (author) / JIA FANGTAO (author)

    Publication date :

    2020-04-17


    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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