Used Engines Perkins Cummins Kubota Deutz 6BT 4BT Generator  An engine is a machine that can convert other forms of energy into mechanical energy, including internal combustion engines (reciprocating piston engines), external combustion engines (Stirling engines, steam engines, etc.), jet engines, electric motors, etc. Internal combustion engines typically convert chemical energy into mechanical energy. The engine is applicable to both the power generation device and the entire machine including the power device (such as gasoline engines, aircraft engines)