Method for controlling ignition timing of an internal combustion engine

摘要

An ignition timing controlling system is provided for calculating an ignition timing based on a basic ignition timing, a learning correcting quantity including a large correcting quantity and a small correcting quantity, and a feedback correcting quantity. In response to an occurrence of knocking, a large retard value is produced. When the large retard value exceeds a reference value, the learning correcting quantity of the small correcting quantity is changed to the learning correcting quantity of the large correcting quantity.