The electronic ignition system generates and controls high currents to spark the spark plugs. The spark of the spark plug ignites the compressed air-fuel mixture at exactly the right time for optimum performance, fuel economy and exhaust emissions control. The engine control unit collects information from the crankshaft position sensors and the position of the intake and exhaust camshafts to determine the sequence, duration and start of ignition for each cylinder. The engine control module sends a repeatable signal to the ignition coil control circuit of the corresponding cylinder to ignite the air-fuel mixture.
The spark plugs are connected to the ignition coils by a conductive shoe having a twisted thread to transfer current from the ignition coil to the spark plug. Spark plug electrodes are platinum coated to reduce wear and increase efficiency.
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