| 摘要 |
PROBLEM TO BE SOLVED: To secure a valve timing amount variable by a variable valve timing device and enhance the accuracy of setting a phase to a stopping phase after an engine stop instruction occurs. SOLUTION: When the phase of an intake valve is controlled after an engine stop instruction in which a stop phase is taken as a standard occurs, a fastest mode for fixing the supply power to a motor as an actuator to the maximum to secure the varied amount of the phase of the intake valve under the condition that motor lock does not occur (NO in S160) until the requirement for mode selection is established (NO in S130) (S180). When the phase of the intake valve approaches the stop phase, and the requirement for mode selection ie established (YES in S130), a control mode is changed from the fastest mode to a normal mode (S150), and the feedback control of the phase of the intake valve is performed. COPYRIGHT: (C)2008,JPO&INPIT
|
