| 摘要 |
An engine control apparatus controls changeover of a combustion mode in an engine in which each cylinder has an injector that can perform fuel injection a predetermined number of times for each cylinder combustion. A control unit controls fuel injection and ignition timing from a spark plug. Upon combustion mode changeover from a first combustion mode, in which fuel injection is performed at least once for each cylinder combustion, to a second combustion mode, in which fuel injection is performed a greater number of times with a larger intake air volume than the first combustion mode, the control unit performs the steps of changing in the first combustion mode a target intake air volume required in the second combustion mode; retarding the ignition timing; changing to the second combustion mode; and further retarding the ignition timing.
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