| 摘要 |
PROBLEM TO BE SOLVED: To ensure running performance of required minimum limit by preventing deterioration of combustion of an engine even in the case of trouble in a water temperature sensor system. SOLUTION: In an engine with variable valve timing mechanism, a valve timing control device, setting target valve timing VTTGT based on at least a detection value of a cooling water temperature sensor, sets the target valve timing VTTGT to the most delay angle (S22) when abnormality in a water temperature sensor system is detected (FNGTW=1) with an output value from the water temperature sensor coming out of a specified value. In this way, even in the case that an engine warm up condition can not be detected, fail-safe control is performed, and running performance of required minimum limit is ensured.
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