METHODS AND SYSTEMS FOR DETERMINING ENGINE SPARK TIMING

摘要

Systems and methods for providing spark to an engine are described. In one example, engine knock limited spark timing is expressed as a straight line that is determined in response to engine knock, spark timing, and engine load. The method and system described herein may be performed without extensive engine calibration and mapping.

主权项

1. A method for adjusting engine spark timing, comprising:
adjusting engine spark timing in response to an engine knock limited spark retard relationship interpolated from a plurality of engine knock limited spark retard versus engine load relationships.