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The ignition system in a gasoline vehicle lights the gasoline.

It increases the 12v battery voltage up to 30,000v, to create a spark at the tip of a spark plug. It is timed accurately, to cause the air/fuel mixture to burn rapidly, at a point in the cycle that pushes down on the piston.

The system also arranges that the high voltage is delivered in the correct order, to each spark plug, in engines with more than one cylinder.

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13y ago
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12y ago

Provide electrical current to the engine control module

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Q: What is the main function of the ignition system?
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