The term Internal Combustion Engine (ICE) is almost always used to refer specifically to reciprocating piston engines, Wankel engines and similar designs in which combustion is intermittent.

• 内燃机（ICE）一词通常基本上是用于特指往复式活塞发动机，转子活塞发动机和其它类似于间歇燃烧型的发动机。