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A waste-spark ignition system uses a single ignition coil to fire two spark plugs simultaneously, one for each cylinder in a dual-spark configuration. In a typical setup, one plug ignites the air-fuel mixture during the compression stroke, while the other plug, located in the opposite cylinder, fires at the end of the exhaust stroke, effectively utilizing the wasted spark. This design enhances combustion efficiency, reduces emissions, and improves engine performance, particularly in high-performance engines. The simultaneous firing also simplifies the ignition system by requiring fewer coils.

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3w ago

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