Ignition Timing Control & Anti-Knock Function

Ignition timing is controlled for each cylinder by means of a separate ignition coil, eliminating the unnecessary high tension distributor. This ignition system is referred to by manufacturer as a coil ignition system with static high tension distribution.

For each cylinder, an output stage-controlled ignition coil is provided, which routes secondary voltage (up to 32,000 volts) via the spark plug connector to the spark plug. This configuration permits independent control of ignition timing.

By eliminating the distributor, the effective range of ignition timing control is increased by about 10 degrees, to a maximum of 59 degrees per cylinder. A camshaft sensor is used to maintain correct firing order. Ignition timing is retarded (anti-knock function), depending on inputs from knock sensors, in order to prevent pre-ignition of the air/fuel mixture in the combustion chamber.