Patent ID: 6619265
Filing Date: 2003-09-16
Classification: F02D

Abstract:
A fuel injection control apparatus for an internal combustion engine, comprising:a crank angle sensor for generating a crank angle signal indicative of angular position of a crank shaft of an internal combustion engine; various types of sensors for detecting operation states of said internal combustion engine; fuel injectors provided on a cylinder-by-cylinder basis for injecting demanded quantities of fuel for individual cylinders, respectively; cylinder identifying means for identifying discriminatively said individual cylinders on the basis of said crank angle signal to thereby generate a cylinder identification signal; fuel injection control means for controlling actuation of said fuel injectors of said individual cylinders, respectively, on the basis of said crank angle signal, an engine operation state signal derived from the outputs of said sensors and said cylinder identification signal; and fuel injection quantity correcting means for correcting time durations for which said fuel injectors are driven upon every fuel injection on the basis of said crank angle signal, said engine operation state signal and said cylinder identification signal.