Patent ID: 7117666

Claim:
A direct fuel injection/spark ignition engine control device comprising: an engine load determination section configured to determine an engine load of a direct fuel injection engine; a catalyst condition determination section configured to determine a state of a catalyst for exhaust purification disposed in an exhaust passage of the direct fuel injection engine; and a combustion control section configured to control a combustion mode based on the engine load as determined by the engine load determination section and the state of the catalyst as determined by the catalyst condition determination section such that a stratified combustion mode with a compression stroke injection is performed when the engine load is a prescribed low load region and when warming up of the catalyst is required, and a double-injection combustion mode is performed with an intake stroke injection and a compression stroke injection when the engine load is higher load than the prescribed low load region and when warming up of the catalyst is required, the combustion control section being further configured to control an ignition timing by setting an ignition timing correction amount to retard the ignition timing for both the stratified combustion mode and the double-injection combustion mode such that the ignition timing correction amount for the stratified combustion mode is larger than the ignition timing correction amount for the double-injection combustion mode.