Fuel injection control method for internal combustion engines.

摘要

In a fuel injection control method for internal combustion engines having a hot wire air flow meter (6) and a valve opening pulse for fuel increment is generated independent of a basic valve opening pulse which causes the injector (3) to inject fuel normally during the normal condition, the duration of the valve opening pulse for fuel increment is controlled dependent on at least one of parameters selected from variations in the air intake volume per unit time, a closing signal of the idle switch for the throttle valve, a signal indicating the number of revolutions of the engine etc., and independent of the duration of the basic valve opening pulse. The acceleration is determined by adjusting the fuel increment in accordance with the valve opening pulse for fuel increment. It is possible to obtain optimum acceleration by varying the adjustment depending on conditions for interrupt adjustment during acceleration. By applying the judgment of conditions for adjustment after fuel reduction for deceleration, it has become possible to acceleration matching between the state after deceleration and the state after normal operation.