Time was when a valve job was done with some valve-grinding compound and a vacuum cup on a stick. But no more. Today's high performance engines require the same machining precision in the valves that ...

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 valves to ...

Wear in engine valve systems arises from the complex interaction of mechanical loading, high temperatures and chemical environments at the valve–seat and valve–guide interfaces. Contact between the ...

GALESBURG, Mich.--(BUSINESS WIRE)--Power management company Eaton today announced its Vehicle Group has introduced its next-generation sodium-filled hollow-head valves, which improve fuel economy, ...