Detonation is the spontaneous combustion of the end-gas (remaining fuel/air mixture) in the chamber. It always occurs after normal combustion is initiated by the spark plug.
Pre-ignition is defined as the ignition of the mixture prior to the spark plug firing
knocking and detonation are not a both phenomena but i don no know
Detonation involves a supersonic exothermic. Knocking in a engine is spark-ignition internal combustion.
both are the same thing..............
It is there to detect detonation or ( knocking ) and the information is used to adjust timing by the pcm.
Knocking due to detonation in the cylinders, poor fuel mileage, reduced lifespan.
When an engine runs as it should the fuel/air mix in the combustion chamber ignites at the spark plug and the flame front spreads from there. In an engine that's knocking there are hotspots in the combustion chamber causing the fuel/air mixture to ignite prematurely a bit all over the place.
low order detonationlow order detonation
Detonation - band - was created in 1997.
Low order detonation
low order detonation
It could be: A. worn rod or main bearings. If that's the case you'll have low oil pressure. B. a faulty "knock sensor" that's supposed to retard the engine timing when it detects early ignition detonation.
low order detonationlow order detonation