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12.22 Ignition systems – Solid State
12.22.2 Describe the principal features and components of a typical solid-state ignition system.
A typical solid-state ignition system consists of the following components:
This provides the electrical power to the ignition system.
2. Ignition switch:
This is used to turn the ignition system on and off.
3. Ignition coil:
This is a transformer that converts the low voltage from the battery to the high voltage required to produce a spark at the spark plugs.
This stores electrical energy and discharges it to the ignition coil to produce a high voltage spark.
5. Electronic control module (ECM):
This controls the timing of the spark and the duration of the spark.
This distributes the high voltage spark from the ignition coil to the correct spark plug at the correct time.
7. Spark plugs:
These ignite the fuel-air mixture in the engine's cylinders.
This connects all the components of the ignition system together.
The principal features of a typical solid-state ignition system include: