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现在常用的一种内燃机是四冲程往复式汽油机,这是德国工程师、发明家奥托在1876年首先制造出来的。今年1月26日是奥托逝世100周年纪念日,人们为了纪念他,把四冲程循环称为奥托循环。三角活塞旋转式发动机(简称三角转子机)是50年代发展起来的一种内燃机,它的工作循环包括进气、压缩、作功和排气四个过程,与四冲程往复式内燃机类似,所不同的是它的活塞只作单方向的旋转,摆脱了活塞往复运动的惯性力,可作高速运转,在一定程度上保持了往复式内燃机的经济性,结构比较简单。几十年来,它得到不断发展,
One of the commonly used internal combustion engines is the four-stroke reciprocating gasoline engine, which was first manufactured by a German engineer and inventor Otto in 1876. On January 26 this year, the 100th anniversary of the death of Otto, people commemorated him and referred to the four-stroke cycle as the Otto cycle. The triangular piston rotary engine (referred to as the triangle rotor machine) is an internal combustion engine developed in the 1950s. Its working cycle includes four processes of intake, compression, work and exhaust, and is similar to a four-stroke reciprocating internal combustion engine. Its piston is used only for unidirectional rotation, freed from the inertial force of the reciprocating motion of the piston, and can be operated at a high speed. It maintains the economy of the reciprocating internal combustion engine to a certain degree, and the structure is relatively simple. For decades, it has been continuously developing.