Definition of pre-ignition in English:


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


[mass noun]
The premature combustion of the fuel-air mixture in an internal-combustion engine.
More 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:

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day animalcule
Pronunciation: ˌanəˈmalˌkyo͞ol
a microscopic animal