CORRECTION DEVICE AND CORRECTION METHOD OF CRANK ANGLE SENSOR

PROBLEM TO BE SOLVED: To highly accurately measure a crank angle of an internal combustion engine by calculating a correction quantity for excellently correcting a detecting value of a crank angle sensor while restraining reduction in drivability. SOLUTION: The internal combustion engine 1 determines an approximate value of the crank angle corresponding to the compression upper dead center on the basis of a detecting value of a cylinder internal pressure sensor 15 for detecting cylinder internal pressure in a combustion chamber 3, and calculates a temporary correction quantity αm on the basis of the approximate value and the detecting value of the crank angle sensor 14 corresponding to the compression upper dead center, and converts the temporary correction quantity αm into a correction quantity α80in a high load by using a load of the internal combustion engine 1 and a correlation between the predetermined load of the internal combustion engine 1 and a correction quantity of the crank angle sensor 4. COPYRIGHT: (C)2006,JPO&NCIPI