Ignition system

The ignition system creates a spark discharge in each cylinder of the engine at a certain moment, which ignites the compressed fuel mixture. To create a spark in the ignition coil, the 12V battery voltage is converted to a high ignition voltage of 25,000-30,000V.

To determine the ignition timing, the control unit uses information stored in memory and information from sensors installed on the engine. The ignition system receives control signals from a Hall sensor or an impulse sensor. Additionally, the ignition timing is also corrected by the knock sensor signal, which is sensitive to pre-ignition and, accordingly, reduces the ignition timing.

Warning: When working on the ignition system, in order not to damage the semiconductor devices (diodes and transistors), the following requirements must be met:

• while the engine is running, do not disconnect the battery, alternator or any electrical connectors;
• when carrying out any work, remove the negative terminal from the battery;
• when carrying out electric welding work on a car, turn off the generator and control unit;
• do not allow the engine to run with the generator disconnected from the electrical system.

Warning: Do not touch or disconnect the high voltage wires while the engine is running or while the engine is cranking with the starter.

Warning: Disconnect the ignition wires and instrument wires only when the ignition is off.

Warning: Wash the engine only with the ignition off.