(Automotive engineering: Vehicle components, Engine, transmission, and exhaust) Ignition timing is the timing of the spark relative to the piston top dead center in a spark ignition engine. ▶ ignition1, ignition2, ignition3, timing
⇒ You can adjust the ignition timing to suit a fuel of a lower octane rating. ⇒ The ignition timing ensures that the spark plug ignites the fuel at the optimum moment. ⇒ If the ignition timing is set to 5 degrees before top dead center, the spark plug fires when the crankshaft
is 5 degrees away from top dead center.
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