preignition
Before spark fires
Preignition is the premature ignition of fuel in an internal combustion engine—before the spark plug fires.
This causes engine knock, reduced power, and potential damage.
The fuel ignites from hot spots in the cylinder rather than the spark: The mechanic diagnosed preignition from carbon buildup on the pistons.
damage
Striking to announce presence
- pingingBrief high-pitched signal
- detonationExplosive ignition event
- misfireFailure to discharge
- overheatingBecoming dangerously warm
mechanism
Tiny fiery particle
- combustionExothermic reaction with oxygen
- fuelEnergy source material
- compressionForcing into smaller space
- cylinderCircular-based solid form
flame · detonation · knock · ping · octane · temperature · thermal · chamber
knocking
Striking to announce presence
- pingingBrief high-pitched signal
- detonationExplosive ignition event
- misfireFailure to discharge
spark
Tiny fiery particle
- combustionExothermic reaction with oxygen
- fuelEnergy source material
- compressionForcing into smaller space
cylinder · flame · detonation · knock · ping · octane · temperature · thermal · chamber · pressure
intercooler
Heat exchanger for compressed air