Valve gear — The valve gear of a steam engine is the mechanism that operates the inlet and exhaust valves to admit steam into the cylinder and allow exhaust steam to escape, respectively, at the correct points in the cycle. It is sometimes referred to as the… … Wikipedia
Walschaerts valve gear — The Walschaerts valve gear is a type of steam engine valve gear invented by Belgian railway mechanical engineer Egide Walschaerts in 1844. The gear is sometimes named without the final s , since it was incorrectly patented under that name. It was … Wikipedia
Poppet valve — A poppet valve is a valve consisting of a hole, usually round or oval, and a tapered plug, usually a disk shape on the end of a shaft also called a valve stem. The shaft guides the plug portion by sliding through a valve guide. In most… … Wikipedia
Corliss steam engine — A Corliss steam engine – the valve gear is on the right of the cylinder block, on the left of the picture A Corliss steam engine (or Corliss engine) is a steam engine, fitted with rotary valves and with variable valve timing patented in 1849 … Wikipedia
Steam engine — A steam engine is a heat engine that performs mechanical work using steam as its working fluid. [ [http://www.britannica.com/EBchecked/topic/564472/steam engine steam engine Britannica Online Encyclopedia ] ] Steam engines have a long history,… … Wikipedia
Piston valves — are an integral part of the cylinder arrangement of a steam locomotive. They control the admission and exhaustion of steam from the cylinders, enabling a locomotive to move under its own power. Design principles When on the move, a steam… … Wikipedia
William Murdoch — Infobox Scientist name = William Murdoch box width = image width = caption = birth date = Birth date|1754|08|21 birth place = Cumnock, East Ayrshire, Scotland death date = dda|1839|11|15|1754|08|21 death place = Handsworth, nr. Birmingham,… … Wikipedia
automation — /aw teuh may sheuhn/, n. 1. the technique, method, or system of operating or controlling a process by highly automatic means, as by electronic devices, reducing human intervention to a minimum. 2. a mechanical device, operated electronically,… … Universalium
Six stroke engine — The term six stroke engine describes two different approaches in the internal combustion engine, developed since the 1990s, to improve its efficiency and reduce emissions:In the first approach, the engine captures the waste heat from the four… … Wikipedia
Inside lap — Lap Lap (l[a^]p), n. [OE. lappe, AS. l[ae]ppa; akin to D. lap patch, piece, G. lappen, OHG. lappa, Dan. lap, Sw. lapp.] 1. The loose part of a coat; the lower part of a garment that plays loosely; a skirt; an apron. Chaucer. [1913 Webster] 2. An… … The Collaborative International Dictionary of English
Lap — (l[a^]p), n. [OE. lappe, AS. l[ae]ppa; akin to D. lap patch, piece, G. lappen, OHG. lappa, Dan. lap, Sw. lapp.] 1. The loose part of a coat; the lower part of a garment that plays loosely; a skirt; an apron. Chaucer. [1913 Webster] 2. An edge; a… … The Collaborative International Dictionary of English