Valve lifter for internal combustion engines

Details Valve lifter for internal combustion engines Valve lifter for internal combustion engines

1997-04-23

1998-05-12

Lo, Weilun

Internal-combustion engines

Poppet valve operating mechanism

Lubrication

123 9052, F01M 910, F01L 116

Patent

active

057493413

ABSTRACT:
A mechanical valve lifter for an internal combustion engine comprises a head section having a recessed portion on an upper face thereof, a skirt section formed integral with the head section and adapted to be in sliding-contact with a lifter guiding bore in an engine cylinder head, a mechanical valve-clearance adjusting shim put in the recessed portion, an annular groove formed in an upper face of a bottom wall of the recessed portion of the lifter body, a first through-opening formed in the shim to communicate with the annular groove, and a second through-opening formed in the head section to communicate with the annular groove and to penetrate the head section. The annular groove and the second through-opening are formed in an essentially zero bending moment area midway between a central axis of the head section and a peripheral wall of the recessed portion.

REFERENCES:
patent: 3301239 (1967-01-01), Thauer
patent: 5566652 (1996-10-01), Deppe
patent: 5570665 (1996-11-01), Regueiro

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