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    • 1. 发明授权
    • Method and apparatus for controlling fuel cut-off in an internal
combustion engine
    • 用于控制内燃机中的燃料切断的方法和装置
    • US4506638A
    • 1985-03-26
    • US561517
    • 1983-12-14
    • Kingo HoriiTakatoshi Masui
    • Kingo HoriiTakatoshi Masui
    • F02D29/02F02D41/12F02D41/26F02D5/00
    • F02D41/123F02D41/26
    • In an internal combustion engine mounted on a four wheel drive (4WD) vehicle, the fuel cut-off engine speed (N.sub.c) and the fuel cut-off recovery engine speed (N.sub.R) are calculated in accordance with the coolant temperature of the engine. When the vehicle is in a 4WD mode, predetermined minimum values are set in the calculated fuel cut-off engine speed and the calculated fuel cut-off engine speed. When the throttle valve is completely closed and it is determined that the current engine speed is higher than the calculated fuel cut-off engine speed (N.sub.c) or the calculated fuel cut-off recovery engine speed (N.sub.R), which is selected in accordance with whether or not the fuel cut-off operation was being carried out, the fuel cut-off operation is carried out.
    • 在安装在四轮驱动(4WD)车辆上的内燃机中,根据发动机的冷却剂温度来计算燃料切断发动机转速(Nc)和燃料切断恢复发动机转速(NR)。 当车辆处于4WD模式时,在计算出的燃料切断发动机转速和计算出的燃料切断发动机转速时设定预定的最小值。 当节流阀完全关闭并且确定当前发动机转速高于根据计算出的燃料切断发动机转速(Nc)或计算出的燃料切断恢复发动机转速(NR) 是否进行燃料切断操作,进行燃料切断动作。