Metal gasket for manifold

Details Metal gasket for manifold Metal gasket for manifold

1991-05-31

1992-02-11

Cuchlinski, Jr., William A.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277236, 277233, 277231, 277232, F16J 1512, F02F 1100

Patent

active

050870580

ABSTRACT:
Disclosed is a metal gasket for a manifold produced by laminating a plurality of bead plates having bead portions which are bent at a predetermined radius of curvature R and by setting the ratio R/t of the radius of curvature R to the thickness t of the bead plates to the range of 7 to 15. Therefore, the radius of curvature of the bent portions of the bead plates to the thickness can be made relatively great and the bent portions of the bead plates become smooth. As a result, when the metal gasket is tightened between a cylinder head and an exhaust manifold, the contact portions of the bead plates are expanded and the stress and face-to-face pressure occurring at the contact portions can be reduced. Accordingly, the stress acting on the bead plates can be made lower than a reference value, the increase of the facet-face pressure can be restricted to within a predetermined range and the stress and face-to-face pressure of the bead portions forming a seal surface can be kept within suitable ranges. For these reasons, even if great thermal deformation occurs in the exhaust manifold relative to the cylinder head, seal performance of the metal gasket is not lowered.

REFERENCES:
patent: 1721326 (1929-07-01), Wilson
patent: 4056682 (1977-11-01), Havens et al.
patent: 4915398 (1990-04-01), Kitagawa
patent: 4948153 (1990-08-01), Takahashi et al.

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