| Basic 4-stroke principles |
The 5 events of an internal combustion engine are Intake, Compression, Ignition, Power, and Exhaust. In a 4-stroke gasoline engine, the crankshaft does 2 revolutions in each engine cycle. Only 1 of its 4-strokes delivers energy to the crankshaft. |
| 4-stroke engine cycle |
The 5 events of any internal combustion engine are Intake, Compression, Ignition, Power, and Exhaust. A stroke is the movement of the piston from top dead centre to bottom dead centre. |
