Self-contained lash adjuster with shell mounted cartridge assemb

Details Self-contained lash adjuster with shell mounted cartridge assemb Self-contained lash adjuster with shell mounted cartridge assemb

1985-05-17

1986-05-27

Lazarus, Ira S.

Internal-combustion engines

Poppet valve operating mechanism

Tappet

123 9055, F01L 124

Patent

active

045908990

ABSTRACT:
A self-contained lash adjuster includes a generally cylindrical cup-shaped follower which has an end face. A lash adjuster cartridge assembly is positioned within the follower. The cartridge assembly includes a reciprocally movable body and a plunger within the body. There is a high pressure chamber defined between the plunger and the body and a plunger passage opens into the high pressure chamber. A check valve controls fluid flow through the plunger passage. A shell holds the cartridge assembly to the follower and has an annular wall extending peripherally about the movable body of the cartridge assembly. There is an annular expandable seal member fastened at one end to the shell and at the other end to the body to define a reservoir outside of the cartridge assembly. Movement of the body toward the plunger moves fluid from the high pressure chamber to the reservoir.

REFERENCES:
patent: 2109815 (1938-03-01), Best
patent: 2833257 (1958-05-01), Lengnick
patent: 3495577 (1970-02-01), Collins
patent: 3521608 (1970-07-01), Scheibe
patent: 4397271 (1983-08-01), Gardner

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