CAM PHASE SENSOR, CONTROL DEVICE OF VARIABLE VALVE TIMING MECHANISM AND CONTROL METHOD OF VARIABLE VALVE TIMING MECHANISM

摘要

PROBLEM TO BE SOLVED: To avoid the deterioration in controllability of a variable valve timing mechanism, by restraining lengthening of a time interval for updating a detecting value of the valve timing (a rotational phase) even in a low rotation area. SOLUTION: An inline 4-cylinder engine is provided with a cylinder discriminating sensor for outputting a cylinder discriminating signal for every 180 degs in a crank angle, and a cam phase sensor for outputting a cam phase signal for every 90 degs in the crank angle. The rotational phase of a camshaft is detected for every 90 degs in the crank angle by detecting angles FA1 and FA2 up to the cam phase signal from a reference crank angle position. COPYRIGHT: (C)2006,JPO&NCIPI