Tappet for a valve train of an internal combustion engine

Details Tappet for a valve train of an internal combustion engine Tappet for a valve train of an internal combustion engine

1999-09-29

2000-09-19

Lo, Weilun

Internal-combustion engines

Poppet valve operating mechanism

Tappet

123 905, F01L 124, F01L 114

Patent

active

061196436

ABSTRACT:
In a tappet (1) of a valve train of an internal combustion engine, the leakage of hydraulic medium occurring between its reception bore (6) and skirt (2) is to be reduced. To achieve this, the tappet (1) of the invention comprises an anti-rotation device (22) and, at the same time, a supply of hydraulic medium from a supply gallery (21) to an annular oil reservoir (17) is effected directly, i.e. annular grooves and other oil deflecting measures are dispensed with. An aperture (19) in the skirt (2) for the supply of hydraulic medium can, at the same time, be advantageously arranged in a bottom-proximate region thereof.

REFERENCES:
patent: 4648360 (1987-03-01), Schaeffler
patent: 4747376 (1988-05-01), Speil et al.
patent: 4756282 (1988-07-01), Kunz et al.
patent: 5188068 (1993-02-01), Gaterman, III et al.
patent: 5450826 (1995-09-01), Speil
patent: 5636604 (1997-06-01), Speil
patent: 5651335 (1997-07-01), Elendt et al.
Patent Abstracts of Japan, vol.12, No. 212 (4 pgs) 63-16112, Jan. 1988.

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