Ignition timing control system for internal combustion engines

摘要

In ignition timing control system for an internal combustion engine, a knocking detector is provided to detect knockings of the engine, and a control unit responsive to the knocking signals of the knocking detector to provide a variable retard amount signal per one knocking which depends on whether the occurrence of another knocking is decided before the lapse of a predetermined time interval from the decision of the knocking.