| 摘要 |
A valve timing controller of an engine reduces degradation of drivability such as a feeling of jumping out of a vehicle and achieves a rapid increase in engine output according to a throttle operation amount. An ECU shifts a phase of a cam shaft toward a control target value A at a reference update speed C 1 when it is judged that a rider does not desire an output increase, and shifts the phase of the cam shaft toward the control target value A at a transient update speed C 2 higher than the reference update speed C 1 when it is judged that the rider desires an output increase.
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