Patent ID: 6874472

Claim:
An ignition timing control apparatus for an internal combustion engine provided with a variable valve event and lift control apparatus that continuously varies a valve lift with a valve event of an intake valve, and a variable valve timing control apparatus that continuously varies valve timing of said intake valve by relatively rotating an intake side camshaft to an intake side cam sprocket, comprising: an ignition apparatus that combusts an air-fuel mixture inside a combustion chamber of said internal combustion engine; and a control unit controlling ignition timing in said ignition apparatus, wherein said control unit: is input with a controlled variable and a target in each of said variable valve event and lift control apparatus and said variable valve timing control apparatus; calculates target opening timing of said intake valve corresponding to said target; calculates actual opening timing of said intake valve corresponding to said controlled variable; calculates a deviation between said target opening timing and said actual opening timing; and corrects said ignition timing based on said deviation.