Patent ID: 7011057
Filing Date: 2006-03-14
Classification: F01L

Abstract:
1. A variable valve operating control apparatus for an internal combustion engine comprising: a Variable valve Timing Control mechanism which makes a centric phase of an operating angle of an engine valve variable due to a rotational phase of a camshaft with respect to a crankshaft being varied; a first detecting unit which detects the centric phase of the operating angle of said engine valve each predetermined crank angle; a second detecting unit which detects the centric phase of the operating angle of said engine valve each predetermined time; and a control unit which feedback-controls said Variable valve Timing Control mechanism on the basis of the centric phase detected at said first detecting unit when a detected result by said first detecting unit is updated, and which feedback-controls said Variable valve Timing Control mechanism on the basis of the centric phase detected by said second detecting unit during the interval of updating the detected result by said first detecting unit.