Method and apparatus for controlling ignition timing of internal combustion engine

摘要

Method and apparatus for controlling ignition timing of an internal combustion engine employing rotation speed information and load information of the engine to determine ignition timing data. A correction amount used to retard the ignition timing and representative of the magnitude of knocking is produced when knocking of the engine is detected. The ignition timing data is corrected in the direction of retardation based on the correction amount, and the ignition timing data is advanced at a predetermined cycle by a desired angle at a time during the time period in which knocking is not detected.