Currently Motorcycle engine devices are used in internal combustion machine.

combustion machine. People accustomed to the use of diesel fuel is called the diesel engine, while the use of gasoline-fueled engine is said to gasoline. Because gasoline engine with a light weight, small size, noise, vibration, start easy and low cost motorcycle engine size advantages, so widely used motorcycle Motorcycle engine gasoline engine as its power plant. "Engine" can be understood literally as mechanical generate power, depending on changes in the way energy can be divided into electric machine (power → mechanical energy), hydraulic machine (water → mechanical energy), wind turbine (wind → mechanical energy), Atomic engine (Atomic Energy → mechanical energy), heat machine (heat → mechanical energy) and so on. Heat can be divided into an external combustion machines with internal combustion motorcycle engine that thermodynamic machine. Motorcycle engine is to enter the cylinder to ignite the air-fuel mixture so that the thermal energy generated by combustion into mechanical energy, by the vehicle driving force becomes the crankshaft and the mechanical power to the rear wheels through a transmission mechanism electric motorcycle motor motorcycle. Engines rushed for two engines and four-stroke engines. Two-stroke engines: Where the engine crankshaft rotation of a turn each, that under the reciprocating motion of the piston under two stroke and complete a work cycle engines. Four-stroke engine: Where rotate every two revolutions of the engine crankshaft, pistons that move up and down reciprocating the completion of a four stroke cycle engine work