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1.热力发动机及其类别将热能转变为机械能的发动机称为热力发动机(简称热机)。热机的热能是由燃料燃烧后产生的。热机有内燃机和外燃机之分。内燃机是燃料和空气的混合物在发动机内部燃烧,并且放出热能而作功的原动机;外燃机是燃料和空气的混合物在发动机外部燃烧,并放出热能而作功的原动机。外燃机一般分为蒸汽机和蒸汽轮机两种。
1. Heat engine and its category The engine that converts heat into mechanical energy is called a heat engine (heat engine). The heat of the heat engine is generated by the combustion of the fuel. Heat engine with internal combustion engine and external combustion engine points. The internal combustion engine is a prime mover in which the mixture of fuel and air is burned inside the engine and emits heat energy to work. The external combustion engine is a prime mover that works by burning a mixture of fuel and air outside the engine and releasing heat. External combustion engines are generally divided into two steam engines and steam turbines.