Corrosion resistant valve guide
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United States of America Patent
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Aug 16, 2011
Grant Date -
Mar 4, 2010
app pub date -
Sep 4, 2008
filing date -
Sep 4, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention generally relates to a new valve guide for use in an exhaust valve system. Specifically, the invention is related to a valve guide that prevents acidic corrosion between the valve and the valve guide. The valve guide includes a number of contact portions, which engage the channel that is formed in the cylinder head near the exhaust port. The valve guide also includes a recess portion, situated in relation to a water jacket and between the contact portions. The recess portion and contact portions are sized and shaped to maintain the surface temperature of the valve guide to prevent condensation of acidic gases between the valve stem and the valve guide.
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