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The 11 pages that link to Engine knocking, each with the reason it gives.

• Octane ratingRelated: Octane rating measures a fuel’s resistance to this damaging form of combustion.

• Otto cycleRelated: Knock limits the compression ratios that practical Otto-cycle engines can use.

• Combustion chamberCompared with: It is a harmful departure from controlled chamber combustion.

• Spark-ignition engineCompared with: It contrasts controlled spark-initiated flame travel with damaging autoignition.

• Connecting rodRelated: Knocking raises peak loads that the connecting rod and its bearings must withstand.

• Thomas Midgley Jr.Related: Suppressing this problem was the practical goal of adding tetraethyllead to gasoline.

• Piston engineRelated: Knock can limit power and damage parts when cylinder conditions exceed the fuel's resistance.

• Fuel injectionRelated: Injection timing and mixture preparation can help manage knock in some engines.

• TetraethylleadRelated: Tetraethyllead was added to gasoline to suppress this damaging combustion.

• 2,2,4-TrimethylpentaneRelated: The reference scale based on this molecule quantifies a fuel’s tendency to resist knocking.

• Petrol engineRelated: Knock can damage petrol engines and constrains compression and spark timing.