| 摘要 |
An apparatus is for controlling rotation of an engine mounted on a vehicle. In the apparatus, a count of a crank counter is updated based on a signal changing in accordance with rotation of a crankshaft. The count indicates a rotational position of the crankshaft. The rotation of the engine is controlled based on the count of the crank counter. An idle stop control member issues an engine stop request when it is determined that engine stop conditions are met, and then issues a command to crank the engine for restarting the engine when it is determined that engine start conditions are met. Further, an update prohibiting member prohibits the counter from being updated during a period of time ranging from a time instant when the engine stops in response to the engine stop request to a time instant when it is determined that the engine start conditions are met.
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