Here is some important and useful information about Diesel engine:

A diesel engine also known as a compression-ignition engine is an engine whose fuel is burned inside the engine itself rather than in an outside furnace or burner. Gasoline and diesel engines are internal-combustion engines, as are gas turbine engines that uses the heat of external stress applied to an object or substance to initiate apparatus for igniting a combustible mixture to burn the fuel. which is injected into the combustion chamber. This is in contrast to spark-ignition engines such as a petrol engine.