Seal assembly for a pressurized fuel feed system for an internal combustion engine
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United States of America Patent
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Oct 18, 2011
Grant Date -
Feb 17, 2005
app pub date -
Aug 12, 2003
filing date -
Aug 12, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The seal assembly comprises providing a fuel conduit having a fluid flow passage therethrough for conveyance of a pressurized fuel-containing gas in a general fluid-flow direction with a first sealing surface disposed on the fuel conduit. A second sealing surface engages with the first sealing surface, such as to provide a fluid-tight connection preventing pressurized gas from leaving the fluid flow passage. The said first and second sealing surfaces are substantially perpendicular to the general fluid-flow direction. An o-ring is disposed between the first sealing surface and second sealing surface, the o-ring being compressed by the first and second sealing surfaces to form said fluid-tight connection. Preferably the o-ring is subjected to a squeeze of at least 40%, more preferably 50%, when the first and second sealing surfaces are coupled together. The sealing arrangement is most advantageously applied to throttle assemblies and the like, in particular for use with low-speed, gaseous fueled engines.
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