Sealing structure of cylinder head cover

Details Sealing structure of cylinder head cover Sealing structure of cylinder head cover

1986-11-12

1988-03-01

Myhre, Charles J.

Internal-combustion engines

Frame construction

Horizontal cylinder

123198E, F02F 700

Patent

active

047278331

ABSTRACT:
A structure for mounting a cylinder head cover on an engine cylinder head, having plug holes for mounting ignition plugs. A plug tube is fixedly inserted into each plug hole and the cylinder head cover is mounted on the cylinder head via a sealing gasket. The cylinder head cover has mount holes, each of which is formed in a reverse-conical surface. A grommet having an annular sealing lip is fitted to the upper end of the plug tube and a fastening nut is engaged with a male thread portion of the plug tube to urge the grommet downward so that the sealing lip is sealingly engaged with the reverse-conical face of the cylinder head cover and an outer peripheral surface of the plug tube, so as to tightly seal away oil contained in the cylinder head cover.

REFERENCES:
patent: 3144013 (1964-08-01), Peras
patent: 3521726 (1970-07-01), Freyn
patent: 4338889 (1982-07-01), Kirchweger et al.
patent: 4495903 (1985-01-01), Asano

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