Engines: Motive Power Types: Compression-ignition engines

Basic 4-stroke diesel principles	The 4-stroke diesel engine operates with the five events common to all internal combustion engines: Intake, Compression, Ignition, Power, and Exhaust.
4-stroke diesel engine cycle	In a 4-stroke diesel engine, the piston travels one stroke each for intake, compression, power, and exhaust. A stroke is the distance from top dead center to bottom dead center.
Basic 2-stroke diesel principles	The 2-stroke diesel engine is an internal combustion engine with the five events common to all such engines: Intake, Compression, Ignition, Power, Exhaust.
2-stroke diesel engine cycle	The 2-stroke diesel engine uses all of the five events in just 2-strokes. The crankshaft makes one revolution for each engine cycle.
Three phases of combustion	The combustion process in the cylinder of a compression-ignition engine is usually described in three phases: Ignition delay, flame spread and direct burning.

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