The invention relates to a control method and system of a virtual central differential lock and an automobile, and the control method of the virtual central differential lock comprises the following specific steps: after a locking instruction is received, a front axle enters a rotating speed control mode, and a rear axle enters a torque control mode; if the unlocking request is not received, the torque size of the front axle torque and the torque size of the rear axle torque are judged, when the current axle torque is larger than the rear axle torque, the front axle adopts a torque control mode, the rear axle adopts a rotating speed control mode, and when the rear axle torque is larger than the front axle torque, the rear axle adopts the torque control mode, and the front axle adopts the rotating speed control mode until the unlocking request is received; and the central differential lock locking mode is quitted. The problem that the torque distributed on the two shafts cannot be accurately controlled in real time according to the conditions of the two shafts in the prior art can be solved, the situation that when one shaft slips or is suspended, power is lost through the shaft is prevented, meanwhile, the control capacity of the vehicle can be improved, and the situation that the vehicle slips and is out of control is avoided.

    本发明涉及一种虚拟中央差速锁的控制方法及系统与汽车,其中虚拟中央差速锁的控制方法,包括以下具体步骤:接收到锁止指令后前轴进入转速控制模式,后轴进入扭矩控制模式;若未接收到解锁请求,则判断前轴扭矩与后轴扭矩的扭矩大小,当前轴扭矩大于后轴扭矩时,前轴采用扭矩控制模式,后轴采用转速控制模式,当后轴扭矩大于前轴扭矩时,后轴采用扭矩控制模式,前轴采用转速控制模式,直至接收到解锁请求,才退出中央差速锁锁止模式。本发明可解决现有技术中无法根据两轴情况精确、实时地控制分配在两轴上的扭矩的问题,防止当某一轴打滑或悬空时动力将通过该轴损失,同时可提升对车辆的控制能力,避免车辆打滑失控。


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    Title :

    Control method and system of virtual central differential lock and automobile


    Additional title:

    一种虚拟中央差速锁的控制方法及系统与汽车


    Contributors:
    ZHANG XIUJIE (author) / YAN CHENSHU (author) / CHEN DONG (author)

    Publication date :

    2023-09-29


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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