Corrosion resistant valve guide

Details Corrosion resistant valve guide Corrosion resistant valve guide

2011-08-16

2011-08-16

Kamen, Noah (Department: 3783)

Internal-combustion engines

Valve

Guide, lubricant, or coolant

Reexamination Certificate

active

07997248

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.

REFERENCES:
patent: 2162304 (1939-06-01), Gross
patent: 2175261 (1939-10-01), Harbaugh
patent: 3127880 (1964-04-01), Meurer et al.
patent: 3615018 (1987-05-01), None
patent: 288431 (1991-03-01), None

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