I think you have a typographical error in your question. The question I believe is "What is a compression ignition engine?"
The answer is:- A diesel engine is a compression ignition engine.
Compression ignition is deisel. Otherwise, spark ignition is gasoline.
No, the steam engine is an external combustion engine because the steam is heated by heat generated by combustion outside externally through heat transfer. A spark ignition engine is an example of an internal combustion engine.
you cut off the ignition spark in a petrol engine
Compression
you cut off the ignition spark in a petrol engine
Compression Stroke
a gasoline engine is an Internal combustion engine
When the engine detonates its referring to the engine giving spark to the compressed air/fuel in the cylinder, when theres combustion its simply the explosion that happens after ignition.
The most popular combustion engine is the internal combustion engine. It is used most often in spark ignition engines such as cars or lawn mowers. Diesel combustion engines are generally large trucks and construction vehicles.
Internal combustion engine.
and internal combustion engine and a gasoline engine are the same thing.
Reciprocating engines (piston engines) are internal combustion engines. Rotary engines ( Wankel engine) is also an internal combustion engine. In general, all types of engines in which the combustion chamber is an integrating part of the engine is considered a internal combustion engine.