| 摘要 |
A method for controlling the quantity of fuel being supplied to an internal combustion engine, immediately after termination of a fuel cut operation which is carried out when the engine is operating in a predetermined operating region while it is decelerating. The fuel quantity is controlled to a required value after termination of a fuel cut operation, by increasing a quantity of fuel set at least as a function of intake pipe pressure by an increment which is set in synchronism with generation of pulses of a predetermined control signal. The increase of the fuel quantity is effected for a period of time after a transition of the operative state of the engine from the fuel cut operation to a normal operation wherein fuel supply is effected has been detected and before a predetermined number of pulses of the above control signal are generated, so long as the magnitude of a variation or change in the rotational speed of the engine is determined to be larger than a predetermined value. Preferably, the increase of fuel quantity is effected only when the rotational speed of the engine is below a predetermined value of rpm. Further, while the magnitude of a variation in the rotational speed of the engine is smaller than the above predetermined value, the increase of the fuel quantity is prohibited, and instead the fuel quantity is determined as a function of a value of intake pipe pressure which is set by subtracting a value dependent upon the engine rotational speed from a detected value of intake pipe absolute pressure, until all the engine cylinders are supplied with fuel after the transition to the normal operation of the engine has been detected.
|
