poppet, poppet valve(noun)
a mushroom-shaped valve that rises perpendicularly from its seat; commonly used in internal-combustion engines
A valve (as in an internal combustion engine) which consists of a sliding shaft with a disk on the end (the disk being shaped to alternately plug and unplug a matching port) and which is operated by springs and possibly cams interacting with the shaft.
A poppet valve is a valve typically used to control the timing and quantity of gas or vapour flow into an engine. It consists 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 applications a pressure differential helps to seal the valve and in some applications also open it. Poppet valves date from at least the 1770s, when James Watt used them on his beam engines.
The numerical value of poppet valve in Chaldean Numerology is: 7
The numerical value of poppet valve in Pythagorean Numerology is: 6
Images & Illustrations of poppet valve
Find a translation for the poppet valve definition in other languages:
Select another language:
Discuss these poppet valve definitions with the community:
Word of the Day
Would you like us to send you a FREE new word definition delivered to your inbox daily?
Use the citation below to add this definition to your bibliography:
"poppet valve." Definitions.net. STANDS4 LLC, 2017. Web. 26 Apr. 2017. <http://www.definitions.net/definition/poppet valve>.