Patent ID: 6684868
Filing Date: 2004-02-03
Classification: F02D

Abstract:
A fuel injection control apparatus of an internal combustion engine, comprising:an air/fuel ratio detecting means for detecting an air/fuel ratio of exhaust gas from the internal combustion engine; and a feedback controlling means for performing feedback control of the injection quantity of fuel supplied to the internal combustion engine on the basis of an output signal from the air/fuel ratio detecting means, wherein the feedback controlling means performs the feedback control in such a way that a feedback gain set at the time of starting the feedback control, which is used for imparting operation constant for performing the feedback control in the period from the time of starting the feedback control until an optimum air/fuel ratio is reached, is set to a value larger than that of a feedback gain set for the normal operation time, which is used for imparting operation constant for performing the feedback control in a stable state, so that the feedback gain is changed between the time of starting the feedback control and the normal operation time.