Changes

An '''internal combustion''' [[engine]] is one in which the [[fuel]] is burned inside the engine itself. An example is an [[automobile]] engine where the [[gasoline]]/air mixture burns inside the engines cylinder and the expanding gases drive the piston. A [[steam engine]] is not an internal combustion engine since the fuel is burned outside the engine.   

An '''internal combustion''' [[engine]] is a [[heat engine]] in which the [[fuel]] is burned inside the engine itself. An example is an [[automobile]] engine where the [[gasoline]]/air mixture burns inside the engines cylinder and the expanding gases drive the piston. A [[steam engine]] is not an internal combustion engine since the fuel is burned outside the engine.   

[[Category:Energy]]

[[Category:Energy]]