| 摘要 |
An in-line four-cylinder engine provided with a variable valve timing mechanism which changes a rotation phase of a camshaft relative to a crankshaft, and a cam angle sensor which outputs a cam angle signal at each 45 (deg.) of the camshaft, detection of an angle spanning from a reference rotational position of the crankshaft to the cam angle signal being made to thereby detect the rotation phase of the camshaft.
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