Internal-combustion engines – Poppet valve operating mechanism – Lubrication
Patent
1997-08-04
1999-02-23
Lo, Weilun
Internal-combustion engines
Poppet valve operating mechanism
Lubrication
1231886, 1231889, 251214, 277502, 277551, F01L 308
Patent
active
058733370
ABSTRACT:
A two-piece valve stem guide allows the guide to be reamed in-place without damaging an installed valve seal. A first section of the guide is press fitted into an axially extending bore of an internal combustion engine component. Next, a multi-piece seal comprising a metallic retainer, elastomeric seal element and optional spring is inserted into the bore. Then a second section of the stem guide is partially installed into the bore. The two sections are reamed to create a common inner radial diameter that is adapted to receive a valve stem. Finally, the second section is pressed axially downward, engaging the seal and forcing the elastomeric seal element radially inwardly until it comes into contact with an installed valve stem.
REFERENCES:
patent: 3265052 (1966-08-01), Goloff
patent: 3577972 (1971-05-01), Moray
patent: 3809046 (1974-05-01), Kammeraad
patent: 3885546 (1975-05-01), Foley et al.
patent: 4427206 (1984-01-01), Sugiyama
patent: 4531483 (1985-07-01), Vossieck et al.
patent: 4660839 (1987-04-01), Mitumaru
patent: 4773363 (1988-09-01), Stritzke
patent: 5063397 (1991-11-01), Larson
patent: 5385351 (1995-01-01), White
patent: 5460139 (1995-10-01), Marlin et al.
patent: 5466084 (1995-11-01), Brueggen et al.
patent: 5476270 (1995-12-01), Vom Schwemm et al.
patent: 5553869 (1996-09-01), Stamback
Dana Corporation
Lo Weilun
LandOfFree
In-guide valve stem seal does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with In-guide valve stem seal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and In-guide valve stem seal will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-298881