Hydraulic lash adjuster

Details Hydraulic lash adjuster Hydraulic lash adjuster

1986-06-06

1987-08-25

Feinberg, Craig R.

Internal-combustion engines

Poppet valve operating mechanism

Tappet

F01L 114

Patent

active

046885250

ABSTRACT:
In a lash adjuster for a valve train, a cuplike partition member is employed between a stationary plunger and an outer tubular member and formed with a radial air venting groove, a first axial air vent and a second axial air vent so that air bubbles, when supplied together with working oil to a first reservoir, are first vented through the radial air venting groove and a concentric air vent formed in the partition member, then vented, when supplied to an inner reservoir section, through the first axial air vent, the radial air venting groove and the concentric air vent, and further vented, when supplied to a second reservoir, through the second axial air vent, the radial air venting groove and the concentric air vent.

REFERENCES:
patent: 3380440 (1968-04-01), Thuesen
patent: 3509858 (1970-06-01), Scheibe et al.
patent: 4590898 (1986-05-01), Buente et al.

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