Ignition system

Overview

The ignition timing is controlled by an electronic control system. Values optimum ignition timings for all engine operation modes stored in the memory of the electronic engine control module (ECM).

Mode of operation of the engine (engine speed, load, the thermal state of the engine, etc.) is determined by signals of various sensors. Based on signals from the sensors and the data of the optimum spark advance angles electronic engine control module (ECM) sends signals to interrupt the current in the primary winding of the ignition coil.

The ignition coil creates a high voltage sparking and thus takes control of the ignition timing.