Engine is a machine that can convert other forms of energy into mechanical energy, including internal combustion engine (reciprocating piston engine) and external combustion engine (Stirling engine, steam engine, etc.). ), jet engines, motors, etc. For example, internal combustion engines usually convert chemical energy into mechanical energy.
The engine is suitable for both power generation devices and complete machines (such as gasoline engines and aero-engines) including power devices. The engine was first born in Britain, so the concept of engine also originated in English. Its original meaning refers to "a mechanical device that generates power".
The external combustion engine, that is to say, its fuel burns outside the engine, was invented by R. Stirling of Scotland in 18 16, so it is also called Stirling engine. The engine converts the thermal energy generated by combustion into kinetic energy. Watt's improved steam engine is a typical external combustion engine. When a large amount of coal is burned to generate heat energy to heat water into a large amount of steam, high pressure is generated, and then this high pressure pushes the machinery to do work, thus completing the conversion of heat energy into kinetic energy.