Patent ID: 6014955
Filing Date: 2000-01-18
Classification: F02D,Y02T

Abstract:
An air-amount-first fuel-amount-second control apparatus an internal combustion engine having a fuel injection cylinder with an air intake valve, an accelerator pedal, and a throttle valve, the apparatus being for controlling the opening degree of the throttle valve and amount of fuel supplied to the fuel injection cylinder in accordance with the operating position of the accelerator pedal, comprising:throttle valve drive means for driving the operation of the throttle valve in accordance with an input signal;target throttle valve opening degree calculation means for calculating a target value of the throttle valve opening degree corresponding to the operating position of the accelerator pedal;throttle valve response characteristic storage means for storing the response characteristic of the throttle valve before reaching a predetermined target opening degree;intake air valve closing time calculation means for calculating the closing time of the air intake air valve in accordance with the operating condition of the internal combustion engine;target value reaching time calculation means for calculating the time required for the throttle valve opening degree to reach a target value from said target throttle valve opening value produced by said target throttle valve opening degree calculation means and the value stored in said throttle valve response characteristic storage means;throttle valve opening degree calculation means for calculating the throttle valve opening degree as of the calculated time of closing the intake air valve from the calculated target value reaching time of the throttle valve and the calculated intake air valve closing time;fuel supply amount calculation means for calculating the fuel supply amount for a target air-fuel ratio from the ratio between the target air-fuel ratio and the intake air amount corresponding to the throttle valve opening degree as of the time of closing the intake air valve; andfuel supply means for supplying the fuel in said calculated amount.