SPARK IGNITION SYSTEMS SPARK IGNITION SYSTEMS

摘要

A spark ignition system for an internal combustion engine has a pick-up producing a waveform controlling a trigger circuit which produces the required sparks. Below a predetermined engine speed, the spark is always produced at the same point on the waveform, but above the predetermined engine speed the spark is produced at a point on the waveform dependent on engine speed so that an automatic advance is obtained.