Valve guide system and method

Internal-combustion engines – Valve – Guide – lubricant – or coolant

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F01L 302

Patent

active

06135080&

ABSTRACT:
A system and method for supporting a valve stem of a poppet valve that is held in a normally closed position by a valve spring, the poppet valve being adapted for use in an internal combustion engine. The system includes a valve guide insert with a body having a first end, a second end, an aperture extending between the first end and the second end, an external surface having a protrusion near the second end. The first end of the guide will preferably include a threaded portion which will cooperate with a nut to provide tension to the valve guide insert. The system also includes a spring seat that includes a thermal barrier adapted for mounting about the stem and for accepting the valve spring, so that the spring may be placed over the thermal barrier and connected to the stem, allowing the stem to be supported by the spring and the valve guide insert.

REFERENCES:
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patent: 2222457 (1940-11-01), Scheibe
patent: 2797676 (1957-07-01), Van Skike
patent: 3577972 (1971-05-01), Moray
patent: 3885546 (1975-05-01), Foley et al.
patent: 4124220 (1978-11-01), Leone et al.
patent: 5503123 (1996-04-01), Carter
patent: 5507257 (1996-04-01), Sakai et al.
patent: 5662078 (1997-09-01), Adegawa
patent: 5899185 (1999-05-01), Ohtsubo

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