- (in a reciprocating engine) the mechanism for opening and closing the valves at certain points in each stroke.
Examples from the Web for valve gear
Historical Examples of valve gear
One form of valve-gear is the link motion invented by Stephenson.
The devices for controlling the steam are the throttle-valve and the valve-gear.
The valve-gear is the Stephenson link, as in the ordinary engine.
The valve-gear and the feed-pumps were worked from the engine-shaft.
The valve-gear of this engine, a view of which is given in Fig. 27, was quite similar to that used on the Watt pumping-engine.
- a mechanism that operates the valves of a reciprocating engine, usually involving the use of cams, pushrods, rocker arms, etc