Self-adjusting hydraulic valve tappet

Details Self-adjusting hydraulic valve tappet Self-adjusting hydraulic valve tappet

1987-09-28

1988-11-29

Wolfe, Willis R.

Internal-combustion engines

Poppet valve operating mechanism

Tappet

F01L 124

Patent

active

047873477

ABSTRACT:
A self-adjusting hydraulic valve tappet arranged in a guide bore of a cylinder head of an internal combustion engine and comprising a cup-shaped housing (1) formed by a hollow cylindrical wall (2) closed at one end by an end member (3) against the outside of which a cam abuts, a radial flange (4) provided in the bore of the hollow cylindrical wall (2) at a distance from the end member and guides for longitudinal movement of the hydraulic play compensating element (6) in a bore (5) concentric to the hollow cylindrical wall (2), characterized in that the radial flange (4) is a separate unit made of a material which has a higher thermal expansion coefficient than steel and the radial flange is inserted with its outer surface (7) in liquid-tight manner in the bore of the hollow cylindrical wall (2) and fixed therein.

REFERENCES:
patent: 4465038 (1984-08-01), Speil
patent: 4579094 (1986-04-01), Doppling et al.
patent: 4590898 (1986-05-01), Buente et al.

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