Knocking
Knocking (English: knocking) the term for the deflagration, commonly known as knocking cylinder, is the engine is not a normal way of working, refers to the ignition engine (usually gasoline engine) in the mixed gas spontaneous combustion and do not follow the normal flame propagation process, Which led to the combustion process is not controllable, the engine issued a high frequency of metal percussion. Detonation can cause engine work to deteriorate and damage the engine parts in serious cases. Note that the spontaneous combustion of the mixed gas after the ignition of the spark plug is known as the knock, and the spark ignition before the spark plug is called the surface ignition (German: Glühzündung). Another detonation is only generated in the ignition engine, compression ignition engine (mostly diesel) issued a beating phenomenon known as the rough work. ...