Patent ID: 7574299
Filing Date: 2009-08-11
Classification: F02D,Y02T

Abstract:
1. A fuel injection control apparatus for an internal combustion engine which is supplied with a fuel by an in-cylinder fuel injection vale for injecting the fuel into a cylinder, and a port fuel injection valve for injecting the fuel into an intake system including an intake port, said apparatus comprising: in-cylinder fuel injection amount calculating means for calculating an in-cylinder fuel injection amount which should be injected by said in-cylinder fuel injection valve; cylinder internal pressure acquiring means for acquiring a cylinder internal pressure which is the pressure within said cylinder; in-cylinder fuel injection time calculating means for calculating an in-cylinder fuel injection time which is a valve opening time of said in-cylinder fuel injection valve in accordance with the calculated in-cylinder fuel injection amount and the acquired cylinder internal pressure; in-cylinder fuel injection valve control means for controlling said in-cylinder fuel injection valve in accordance with the calculated in-cylinder fuel injection time; port fuel injection amount calculating means for calculating a port fuel injection amount which should be injected by said port fuel injection port; intake system internal pressure detecting means for detecting the pressure within said intake system; port fuel injection time calculating means for calculating a port fuel injection time which is a valve opening time of said port fuel injection valve in accordance with the calculated port fuel injection amount and the detected pressure within the intake system; and port fuel injection valve control means for controlling said port fuel injection valve based on the calculated port fuel injection time.