| 摘要 |
This lock determination device for a variable valve timing mechanism is provided with: a means for detecting an operation position of a variable valve timing mechanism provided with a function for locking, when operation of an internal combustion engine is stopped, in an intermediate position between a maximum-retardation position, at which the valve timing of the internal combustion engine is most retarded, and a maximum-advancement position, at which the valve timing of the internal combustion engine is most advanced; a means for starting a timer as a result of the operation position of the variable valve timing mechanism entering an intermediate area, i.e. a predetermined area including the intermediate position; a means which determines, after the timer has been started, whether the operation position of the variable valve timing mechanism is in a determination-holding area that extends further towards a retardation side than the intermediate area; a means which, in cases when the operation position of the variable valve timing mechanism is in the determination-holding area, incrementally increases the value of the timer; and a means which, in cases when the value of the timer reaches a prescribed value, determines that the operation position of the variable valve timing mechanism is locked in the intermediate position. |
