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pre-ignition Line breaks: pre-ignition
Pronunciation: /priːɪɡˈnɪʃ(ə)n/

Definition of pre-ignition in English:


[mass noun]
The premature combustion of the fuel-air mixture in an internal-combustion engine.
Example sentences
  • Early ignition or runaway pre-ignition causes higher combustion chamber temperatures that can wreck the engine.
  • High-octane fuel simply allows the higher pressures and temperatures in these high-output engines by preventing pre-ignition.
  • To run an engine on unleaded fuel it may be necessary to retard the initial timing to prevent detonation and/or pre-ignition.

Definition of pre-ignition in:

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