CYLINDER DETERMINING DEVICE FOR INTERNAL COMBUSTION ENGINE

摘要

PROBLEM TO BE SOLVED: To shorten the time for determining cylinder by determining the cylinder at two positions while using two cylinder determination expressions. SOLUTION: The number of projection per each cylinder on a signal plate is set at two per each cylinder, and a projection for discriminating the cylinder is separately added. A crank angle sensor detects this projection per each time when the projection provided on the signal plate passes through. Determination of cylinder is performed by using a first determination expression using the last pulse interval time T1, The pulse interval time T2 of the last time of the last time and the latest pulse interval time T and a second determination expression using the latest pulse interval time T, the last pulse interval time T1 and the pulse interval time T3 of the last of the last time. Position capable of determining the cylinder is set at two positions by using two cylinder determination expressions. Consequently, the time for determining the cylinder can be shortened.