valve gear

noun

(in a reciprocating engine) the mechanism for opening and closing the valves at certain points in each stroke.

valve gear

a mechanism that operates the valves of a reciprocating engine, usually involving the use of cams, pushrods, rocker arms, etc

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The blast was secured by a fan, and the valve-gear was worked by cams instead of eccentrics.

H B is proportional to the lift of the valve, and O H to the motion of the valve-gear when out of contact with the valve-lifters.

The joints of the valve-gear consist of pins turning in solid ferrules in the rod-ends, both hardened and ground.

The simplest valve gear depends for its action on a fixed eccentric.

The governor, the Corliss valve gear and the triple compound expansion.

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