Seal structure for cylinder heads

Details Seal structure for cylinder heads Seal structure for cylinder heads

1996-07-25

1997-09-30

Cuchlinski, Jr., William A.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277180, 2771675, 277168, 1231933, 1231935, F16J 1508

Patent

active

056719302

ABSTRACT:
A sealing structure for cylinder heads is disclosed. The sealing structure has a bead placing means which is provided in the junction between the cylinder head and block. The bead of a gasket is placed in the bead placing means, so that the ridge of the bead is not excessively compressed but is brought into linear contact with the bead placing means. The bead thus maintains its elasticity for a lengthy period of time, thereby sealing the junction irrespective of highly-pressurized combustion gases and preventing leakage of coolant and engine oil through the junction. The sealing structure also reduces the amount of mixed gas filling in the junction, thus improving the mileage of a vehicle. The sealing structure almost completely restricts the exhaust of unburnt mixed gases during an exhaust stroke of an engine, thus allowing the engine to be less likely to cause environmental pollution.

REFERENCES:
patent: 5221097 (1993-06-01), Ishikawa et al.
patent: 5275139 (1994-01-01), Rosenquist
patent: 5343837 (1994-09-01), Ward et al.
patent: 5544899 (1996-08-01), Ueta

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