초록 ▼

A cylinder gasket having three flat metal foils connected together. The fluid passages between the cylinder head and engine block are sealed by forming a centrally located first aperture in the two external flat metal foils. A smaller second aperture, centrally located to the first aperture, is form

A cylinder gasket having three flat metal foils connected together. The fluid passages between the cylinder head and engine block are sealed by forming a centrally located first aperture in the two external flat metal foils. A smaller second aperture, centrally located to the first aperture, is formed in the central flat metal foil so as to form first and second flat zones. In the preferred embodiment, an elastomer band is attached to the central flat metal foil around the periphery of the second aperture and the first and second flat zones to seal the fluid passages. The cylinder lining is sealed by a second ring member with an external round lip. The second ring member is mounted in a third aperture in the two external flat metal foils centrally located with the cylinder lining. The external round lip is sandwiched between the two external flat metal foils and a fourth aperture in the central flat metal foil which is centrally located with the third aperture. An escape channel is provided to vent gases to the exterior of the engine. In an alternate embodiment, a C shaped circular member is attached to the central flat metal foil around the periphery of the second aperture. A metal ring is interposed the C shaped circular member and first ring member.

대표청구항 ▼

A cylinder head gasket for sealing between the upper flat surface of an engine block and the lower flat surface of a cylinder head, the upper flat surface of the engine block having at least one cylinder lining and portions defining at least one first fluid passage, the lower flat surface of the cyl

A cylinder head gasket for sealing between the upper flat surface of an engine block and the lower flat surface of a cylinder head, the upper flat surface of the engine block having at least one cylinder lining and portions defining at least one first fluid passage, the lower flat surface of the cylinder head having portions defining at least one second fluid passage centrally located with said at least one first fluid passage of said engine block, said head gasket comprising: two external flat metal foils, each of said two external flat metal foils having a top surface and an opposite surface, said top surface of one of said two external flat metal foils mounted adjacent to the lower flat surface of the cylinder head, said opposite surface of another of said two external flat metal foils mounted adjacent to the upper flat surface of the engine block, each of said two external flat metal foils further having at least one first aperture centrally located with said at least one first and second fluid passages; a central flat metal foil having a top portion attached to said opposite surface of one of said two external flat metal foils and a bottom portion attached to said top surface of another of said two external flat metal foils, said two external foils and said central foil further being integrally connected to form an integral flat body member, said central flat metal foil further having at least one second aperture centrally located with respect to said at least one first aperture of each of said two external flat metal foils to permit flow communication between said at least one first fluid passage and said at least one second fluid passage, said at least one first aperture of each of said two external flat metal foils further being larger than said at least one second aperture forming a first flat zone on said top portion of said central flat metal foil between said at least one first aperture and said at least one second aperture and a second flat zone on said bottom portion of said central flat metal foil between said at least one first aperture and said at least one second aperture; and means attached to said central flat metal foil around the periphery of said at least one second aperture for sealing said at least one first and said at least one second fluid passages so as to prevent the loss of fluid between said at least one first passage in said cylinder block and said at least one second passage in said cylinder head.