Rotary engines (also known as Wankel engines and Wankel rotary engines) are quite different from piston or "reciprocating" engines. One of the distinguishing features is that they don't need ...

The valve is an inexpensive, easily replaced example of the dozens of parts that can elicit a check engine light and associated vexing investigation. It can also be the source of oil leaks.

I is a crank secured by a bar or hub to 1 the valve stem, and connected by a rod to the ordinary eccentric on the main crank shaft of the engine. K is the escape pipe. When the steam is admitted ...