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Carbon Fiber Reinforced Carbon Composites Rotary Valves for Internal Combustion EnginesCarbon fiber reinforced carbon composite rotary, sleeve, and disc valves for internal combustion engines and the like are disclosed. The valves are formed from knitted or braided or warp-locked carbon fiber shapes. Also disclosed are valves fabricated from woven carbon fibers and from molded carbon matrix material. The valves of the present invention with their very low coefficient of thermal expansion and excellent thermal and self-lubrication properties, do not present the sealing and lubrication problems that have prevented rotary, sleeve, and disc valves from operating efficiently and reliably in the past. Also disclosed are a sealing tang to further improve sealing capabilities and anti-oxidation treatments.
Document ID
20000025428
Acquisition Source
Langley Research Center
Document Type
Other - Patent
Authors
Northam, G. Burton
(NASA Langley Research Center Hampton, VA United States)
Ransone, Philip O.
(NASA Langley Research Center Hampton, VA United States)
Rivers, H. Kevin
(NASA Langley Research Center Hampton, VA United States)
Date Acquired
August 19, 2013
Publication Date
June 1, 1999
Subject Category
Mechanical Engineering
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
NASA-Case-LAR-15498-1|US-Patent-5,908,016
Patent Application
US-Patent-Appl-SN-013306|US-Patent-Appl-SN-812826
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