Electronic ignition system for automobile IC engine - has two generators respectively producing voltages proportional to engine RPM and flywheel reference point angular displacement

摘要

The electronic ignition system for internal combustion engines esp. motor vehicle engines has two voltage generators. The first provides a saw-tooth waveform proportional to the angular displacement of a reference source from a point on the fly wheel. The second generates a voltage proportional to the engine rpm. Ignition control is primarily from a position sensor, which can be optical, magnetic etc. The sensor output is shaped and feeds a multi-output generator. This supplies processing circuits including a memory controlling the ignition signals and accessories such as a rev counter, injection units, diagnostic panels etc.