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Long-Term Behaviour of Valve Stem Seals in Otto and Diesel Engines
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English
Abstract
In order to reduce oil consumption resulting from leakage via valve guides, spring tensioned lip seals are applied.
By the choice of oil side lip contact angle, degree of garter spring leverage, radial sealing force, and surface roughness of the valve stem, the metered oil leakage may be controlled and optimised.
The application of an elastomer with greater wear resistance in a Fluoro-polymer basis (FKM) ensures correct functioning over the working life of vehicle engines.
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Authors
Citation
Deuring, H., "Long-Term Behaviour of Valve Stem Seals in Otto and Diesel Engines," SAE Technical Paper 810292, 1981, https://doi.org/10.4271/810292.Also In
References
- Tolksdorf H.J. “Spring loaded Valve stem seals having improved performance and Durability” Technical paper E9, Goetze-reference no. 159/2/5.78
- Schrader K. ”Elasto-hydrodynamische Vorgange im Dichtspalt gummielastischer Abdichtungen - Schmierungstechnik 11 1980
- Hirabayashi H. Kawahara Y. und Muto Y. ”A study of Lubricant Characteristics on Valve Stem Seals for Automotive Engines” - Congress and Exposition Cobo Hall Detroit February 26 March 2 1979