Patent ID: 6988485
Filing Date: 2006-01-24
Classification: F02D,Y02T

Abstract:
1. A fuel injection control device for an internal combustion engine, comprising: operating load detecting means for detecting an operating load on the internal combustion engine; a port injector for port injection; an in-cylinder injector for in-cylinder injection; fuel amount calculating means for calculating a port injection amount of fuel to be injected from the port injector and a reference in-cylinder injection amount of fuel to be injected from the in-cylinder injector at a predetermined injection amount calculation timing based on the operating load; port injection control means which starts a port injection before an in-cylinder injection so as to inject said port injection amount of fuel from the port injector; correction fuel amount calculation means which calculates a fuel correction amount for a change of the operating load on the internal combustion engine if the change is detected after the injection amount calculation timing and before a reflection limit timing until which the amount of fuel to be injected from the in-cylinder injector; and in-cylinder injection control means which executes the in-cylinder injection after the port injection so as to inject an amount of fuel from the in-cylinder injector wherein the amount of fuel is determined based on the reference in-cylinder injection amount and the correction amount.