| 摘要 |
PROBLEM TO BE SOLVED: To increase an engine output during a middle/high load application in addition to the stabilization of a combustion state during the cooling of an internal combustion engine. SOLUTION: During a cooling time when the cooling water temperature of an internal combustion engine 10 is lower than a specified value and a load based on the intake quantity of the internal combustion engine 10 is equal to a specified value or higher, An ECU 30 controls an actual spark advance angle value such that a cam shaft 15 coincides with a specified target spark advance angle value as a target phase difference with respect to a crankshaft 11 by a VVT (variable valve timing control mechanism) 50. Thus, since an optimal valve overlapping quantity by the VVT 50 is obtained even during the cooling time of the internal combustion engine 10, a combustion state is stabilized, and an engine output is simultaneously increased during a middle/high load.
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