Patent ID: 7055500
Filing Date: 2006-06-06
Classification: F02D,F02P,Y02T

Abstract:
1. An ignition timing control apparatus for an internal combustion engine including an in-cylinder injector and an intake port injector, comprising a proper ignition timing setting unit for setting a proper ignition timing according to a fuel injection ratio of injection from said in-cylinder injector and a fuel injection ratio of injection from said intake port injector, wherein said proper ignition timing setting unit sets a proper ignition timing according to the fuel injection ratio in a current operation state, based on at least a basic ignition timing value in a case where the fuel injection ratio of the injection from said in-cylinder injector exceeds 50% and thus the injection is mainly direct injection and a basic ignition timing value in a case where the fuel injection ratio of the injection from said intake port injector exceeds 50% and thus the injection is mainly port injection.