Detonation in SI engines occur due to
A)pre ignition of the charge before the spark
B)sudden ignition of the charge before the spark
C)autoignition of the charge after the spark in struck
D)none of the above

Question

Quizplus · Accepted Answer

Detonation in Spark Ignition (SI) engines occurs due to the autoignition of the unburned charge in the combustion chamber after the spark has already ignited the initial part of the fuel-air mixture. This results in a rapid increase in pressure and temperature, causing a knocking sound.

Detonation in SI Engines Occur Due to