reciprocating engine

Japanese: reciprocating engine(英語表記)reciprocatingengine
reciprocating engine

…an engine in which a piston with a circular cross section reciprocates within a cylinder. Steam engines, general gasoline engines, diesel engines, etc. are of this type, and are collectively called reciprocating engines or reciprocating engines, in contrast to rotary engines such as gas turbines and steam turbines, which are composed only of rotating parts. Piston engines require a piston-crank mechanism to convert the reciprocating motion of the pistons into rotary motion, and are inferior in performance in terms of weight and vibration compared to rotary engines. However, they can be manufactured relatively easily and inexpensively in high-efficiency models from small to large power outputs, and are easy to handle, making them the most widely used type of prime mover. …

*Some of the terminology that mentions "reciprocating engine" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…円形断面を有するピストンがシリンダー内を往復する構造のエンジン。蒸気機関や一般のガソリンエンジン,ディーゼルエンジンなどがこの形式で,回転部のみから構成されているガスタービンや蒸気タービンなどの回転型機関に対して,往復機関reciprocating engine,レシプロエンジンとも総称される。ピストンエンジンはピストンの往復運動を回転運動に変換するためのピストン‐クランク機構を必要とし,回転型機関に比べて重量や振動の面では性能的に劣るが,小出力のものから大出力のものまで,高効率のものを比較的容易にかつ安価に製造でき,また取扱いも容易なため,原動機の中ではもっとも広く用いられている形式である。…

※「reciprocating engine」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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