排气量 Engine displacement
（重定向自Swept volume）
![四缸四冲程发动机的一个完整发动机循环周期。发动机排量为图中橙色部分。](/Images/godic/202502/14/Displacement1850.gif")
排气量或排量，是指内燃式发动机在一次完整发动机循环中吸入的空气和燃气混和气的总体积，通常用立方厘米（cc）、或升（l）作为单位。发动机排量并不是发动机燃烧腔的全部体积。
Swept volume
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英语百科
Engine displacement 排气量
（重定向自Swept volume）
Engine displacement is the volume swept by all the pistons inside the cylinders of a reciprocating engine in a single movement from top dead centre (TDC) to bottom dead centre (BDC). It is commonly specified in cubic centimetres (cc or cm), litres (l), or (mainly in North America) cubic inches (CID). Engine displacement does not include the total volume of the combustion chamber.
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