Spark ignition timing control system for internal combustion engine with acceleration responsive spark advance retarding control

摘要

A spark ignition control system distinguishes engine operating condition between low engine load range where acceleration shock tends to be created and high engine load range where acceleration shock to be created is small and better acceleration characteristics is required. The spark ignition timing control system performs spark advance retarding control while the engine is in the low engine load range and in response to acceleration demand. On the other hand, the spark advance retarding control is disabled in the high engine load range.