Valve lifter

Details Valve lifter Valve lifter

1997-07-18

1998-04-28

Lo, Weilun

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 905, F01L 1300

Patent

active

057432260

ABSTRACT:
A valve lifter has a lifter body with a first surface arranged to feet on a pair of low lift cams on a camshaft, and a pair of hydraulic slides disposed in a bore of the lifter body. The slides have a stored position wherein they define therebetween and within the bore a chamber arranged to allow entry of a high lift cam on the camshaft disposed between the pair of low lift cams. The lifter body is formed with a window opening to the chamber to allow access of the high lift cam to the chamber. The slides have an operative position wherein they define a second surface opposite to the window arranged to rest on the high lift cam.

REFERENCES:
patent: 5343833 (1994-09-01), Shirai
patent: 5351662 (1994-10-01), Dopson et al.
patent: 5431133 (1995-07-01), Spath et al.

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