A method for controlling the fuel supply of an internal combustion engine.

摘要

There is a method for controlling the fuel supply of an internal combustion engine having a throttle valve in the intake air system. It is detected that an angular position of a crankshaft of the engine coincides with a predetermined crankshaft angular position. Whenever this coincidence is detected, the pressure in the intake air passage downstream of the throttle valve and the engine rotating speed or the value of the inverse number thereof is detected on the basis of the interval between the detections of the crankshaft angular position. The reference basic fuel supply amount into the engine is determined in accordance with the present de- : tection value PBAn of the pressure in the intake air passage. The present reference value MeAVEn having predetermined functional relations with regard to the present detection value Mon and previous reference value MeAVEn(n-1) of the engine speed or of the value of the inverse number thereof is set. The correction fuel supply amount is decided on the basis of the present reference value MeAVEn and is added to the basic fuel supply amount. Then the injection amount of fuel as much as the result of this addition is supplied into the engine. Thus, a driveability of the engine is improved.