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Auto Glossary -K

Automotive Glossary of Terms - K -

Definitions for automotive terms and illustrations from key to knock sensor.

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KEY: A small block usually fitted in a notch between a shaft and a hub to prevent slippage of the two parts.

KNOCK: Noise which results from the spontaneous ignition of a portion of the air-fuel mixture in the engine cylinder caused by overly advanced ignition timing or use of incorrectly low octane fuel for that engine.

KNOCK SENSOR: An input device that responds to spark knock, caused by overly advanced ignition timing.