Double cylinder engine, refers to the engine with two cylinders, which is composed of two identical single cylinders arranged in a body to share a crankshaft output power.
A twin cylinder engine is a machine capable of converting one form of energy into another more useful energy. Usually to convert chemical energy into mechanical energy. Sometimes the engine is suitable for both the power generating device and the entire machine including the power unit, such as a gasoline engine or aero engine. The main part of the engine is the main cylinder, here is the power source of the entire car.
The main purpose: two-cylinder motorcycle crankshaft used in the car's engines, motorcycles, chain saws and other low-power power machinery.