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 gasses 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 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 gasses drive the piston. A [[steam engine]] is not an internal combustion engine since the fuel is burned outside the engine.   

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[[Category:Energy]]