Capacitor Discharge Ignition

Capacitor Discharge Ignition

Capacitor discharge ignition (CDI) or thyristor ignition is a type of automotive electronic ignition system which is widely used in outboard motors, motorcycles, lawn mowers, chainsaws, small engines, turbine-powered aircraft, and some cars. It was originally developed to overcome the long charging times associated with high inductance coils used in inductive discharge ignition (IDI) systems, making the ignition system more suitable for high engine speeds (for small engines, racing engines and rotary engines). The capacitive-discharge ignition uses capacitor discharge current output to fire the spark plugs.

Read more about Capacitor Discharge Ignition:  History, The Basic Principle, Advantages and Disadvantages of CDI

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    It is wonderful when a calculation is made, how little the mind is actually employed in the discharge of any profession.
    Samuel Johnson (1709–1784)