Classification of engines

Release time:

2024-03-26

External combustion engine
External combustion engine, which means its fuel burns outside the engine, was invented by R. Stirling of Scotland in 1816, and is also known as Stirling engine. The engine converts the heat generated by combustion into kinetic energy, and Watt's improved steam engine is a typical external combustion engine. When a large amount of coal burns to generate heat and heat water into a large amount of steam, high pressure is generated, which in turn drives the machinery to do work, thus completing the transformation from thermal energy to kinetic energy.
internal-combustion engine
Once you understand what an external combustion engine is, you will know what an internal combustion engine is. The internal combustion engine is a reciprocating piston engine, and the biggest difference between this type of engine and an external combustion engine is that its fuel burns inside. There are many types of internal combustion engines, and common gasoline and diesel engines are typical internal combustion engines.
gas turbine
In addition, there is a gas turbine, which works by producing high-pressure gas through combustion. The high-pressure gas is used to drive the blades of the gas turbine to rotate, thereby outputting power. Gas turbines have a wide range of applications, but due to the difficulty of finely adjusting the output power, cars and motorcycles rarely use gas turbines, and only some racing cars have been equipped with gas turbines.
Jet engine
Jet engine refers to an engine that generates reactive thrust directly from the high-speed airflow ejected by the nozzle. Widely used as a power device for aircraft. The fuel and oxidizer undergo a chemical reaction in the combustion chamber to release thermal energy. Then, the thermal energy is converted into the function of adjusting the airflow in the nozzle. Besides fuel, oxidizers carried by aircraft are called rocket engines, including solid fuel rocket engines and liquid fuel rocket engines.