Science, asked by harshalwadekar055, 6 months ago

Compare knocking between SI and CI engines.

Answers

Answered by aditya120411kumar
1

Explanation:

In S.I. engines detonation is caused by the auto-ignition of end gas towards the end of combustion whereas knocking in CI engines is due to auto-ignition of the first charge at the start of combustion. Larger size of cylinder promotes detonation in SI engines whereas detonation in CI engines is reduced with the same.

Answered by sharonkamath49
0

Answer:

A spark-ignition engine (SI engine) is an internal combustion engine, generally a petrol engine, where the combustion process of the air-fuel mixture is ignited by a spark from a spark plug.

The diesel engine, named after Rudolf Diesel, is an internal combustion engine in which ignition of the fuel is caused by the elevated temperature of the air in the cylinder due to the mechanical compression; thus, the diesel engine is a so-called compression-ignition engine.

Explanation:

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