IGNITION TIMING CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

摘要

PROBLEM TO BE SOLVED: To provide an ignition timing control device for an internal combustion engine, retarding ignition timing to be close to the ignition timing in a very small knocking occurrence state to narrow a fluctuation range of ignition timing by a knocking feedback control. SOLUTION: The ignition timing control device for an internal combustion engine comprises: a feedback control means determining occurrence of knocking by a knocking signal for each time of ignition output from a knocking sensor 28 and controlling the ignition timing based on the determination result; and an ignition timing learning control means determining a knocking occurrence state based on a statistical nature of the knocking sensor output by a plurality of times of ignition acquired by the knocking sensor, and controlling the ignition timing based on the determination result. By combining both of the control means, final ignition timing is controlled. COPYRIGHT: (C)2007,JPO&INPIT