Abstract: A layered head gasket includes a gasket core, a head-layer, a block-layer, and a plurality of apertures. The head gasket may be useful for sealing an internal combustion engine having a cylinder head, a cylinder block, a plurality of combustion chamber passageways, a plurality of coolant passageways, and a plurality of oil passageways. The gasket core is made of a copper sheet. The head-layer may be made of spring steel and may be fixed to a top side of the gasket core, being configured to interface with the cylinder head. Likewise, the block-layer may be made of spring steel and may be fixed to a bottom side of the gasket core, being configured to interface with the cylinder block. The plurality of apertures may pass through the head-layer, the gasket core, and the block-layer.

Abstract: A gasket clamped between two members fastened by a fixture, includes first and second metal plates laminated together to form the gasket, fixture holes formed in the first and second metal plates for inserting the fixture therein, sealing subject holes formed in the first and second metal plates, fastening-stress concentration areas located on the first and second metal plates between the fixture holes and the sealing subject holes where a fastening stress concentrates when the two members are fastened by the fixture, and a linear bead formed on the first metal plate only at the fastening-stress concentration area to reduce the fastening stress when the two members are fastened. The linear bead projects to a side opposite to the second metal plate, and is disposed on an axis line connecting a center of the fixture hole and a center of the sealing subject hole in the first metal plate.

Abstract: A gasket assembly has a middle layer located between an upper layer and a lower layer. The middle layer includes spacer portions that at least partially surround a gap. The gap, the spacer portions and the layers may have insulating and/or conducting portions as needed.

Abstract: An engine assembly is provided herein. The engine assembly includes a head gasket interposing a cylinder block and a cylinder head, the head gasket comprising a first layer in face sharing contact with a portion of a cylinder head attachment surface included in the cylinder block and having a first-layer coolant opening adjacent to two neighboring cylinders and a second layer having a second-layer coolant opening having a smaller cross-sectional area than the first-layer coolant opening.

Abstract: A fire-resistant seal for a propulsion assembly which includes a pylon, an O-duct type nacelle of a turbojet engine. The nacelle includes an inner fixed nacelle structure and a combustion gas ejection primary nozzle, and the fire-resistant seal is placed in an annular sector defined by the inner fixed nacelle and the gas ejection primary nozzle. In particular, the fire-resistant seal includes a plurality of baffles, and the plurality of baffles are longitudinally disposed so as not to interfere each other during a longitudinal translational movement of the inner fixed nacelle structure relative to the combustion gas ejection primary nozzle.

Abstract: The present application provide a seal for use between components engine facing a high pressure cooling air flow and a hot gas path in a gas turbine. The seal may include a first shim, a second shim with an air exit hole, one or more middle layers positioned between the first shim and the second shim, and one or more cooling pathways extending through the middle layers for the high pressure cooling air flow to pass therethrough and exit via the air exit hole into the hot gas path.

Abstract: An injector seal for a gas turbomachine includes a seal body having a first surface, an opposing second surface, a central opening configured and disposed to receive a gas turbomachine injector, an outer edge, and a plurality of passages extending through the seal body. The plurality of passages are configured and disposed to guide a fluid at the first surface through the second surface.

Abstract: An engine assembly is provided herein. The engine assembly includes a head gasket interposing a cylinder block and a cylinder head, the head gasket comprising a first layer in face sharing contact with a portion of a cylinder head attachment surface included in the cylinder block and having a first-layer coolant opening adjacent to two neighboring cylinders and a second layer having a second-layer coolant opening having a smaller cross-sectional area than the first-layer coolant opening.

Abstract: In a flange fastening section that includes a flange of a pipe for forming a connection of the pipe to another pipe by connection of the flange to a flange of the another pipe, the flange has a groove in the face to be connected to the flange of the another pipe for forming the connection. A gasket including expanded graphite is at least partly accommodated in the groove, and at least one O-ring is at least partly accommodated in the groove and at the peripheral surface of the gasket. The O-ring has a cavity through which working fluid may flow, an inlet piping into which the working fluid may flow and an outlet piping out of which the working fluid may flow.

Abstract: A cylinder head gasket 1 comprises gasket base plates 4 and 5 including: a plurality of combustion chamber holes 7; a water hole 9 formed in a manner adjusted to the position of a cooling liquid path 3b formed in a cylinder block; and full beads 4a and 5a surrounding the combustion chamber holes. The neighboring full beads are formed at locations distant from each other. Furthermore, two coupling beads 4b and 5b are provided at locations having disposed therebetween a centerline connecting the centers of the neighboring combustion chamber holes, and the two coupling beads 4b and 5b branch out from one full bead and join the other full bead and protrude in the same direction as the full beads. The water hole is disposed outside an area surrounded by the full beads and the coupling beads. When the neighboring full beads are distant from each other, cooling liquid can be blocked from flowing into an area formed between the full beads.

Abstract: The present invention relates to an exhaust manifold gasket having a metallic core, at least one insulating layer, and an embossed layer. The metallic core has two sides with at least one side having a plurality of projections. The insulating layer has two sides, with the first side contacting the projections of the metallic core and the second side contacting the embossed layer. The embossed layer is a metallic flange having a lower leg, a convex face, and an upper leg.

Abstract: A gasket resistant to vibration and noise generation is interposed between a cylinder head and an exhaust manifold of an engine. The gasket includes a gasket main body interposed between a cylinder head and an exhaust manifold of an engine, a base plate affixed to the gasket main body and having a heat shielding portion integral with a base portion and extending to a side of the exhaust manifold, and a reinforcement plate fixed to the heat shielding portion, in which the reinforcement plate is not present at a region of the base portion in contact with the gasket main body, and a reinforcement rib is formed at the region of the base portion in contact with the reinforcement plate and a region of the heat shielding portion in contact with the reinforcement. The base portion is provided with a projected portion projected into a path of introducing secondary air from a side wall of the cylinder head to an exhaust port.

Abstract: A metal gasket has a primary bead formed on an area positioned between a cylinder bore and a cooling water passage. A second bead is formed on an area corresponding to an opening of one or more cooling passages. A base member of the metal gasket comprises bead plates that have a rubber coating layer. The base member also comprises a shim member disposed between the bead plates. The primary bead is formed by defining a space respectively between the bead plates and the shim member. The secondary bead is formed by defining a space on a given area between the bead plates.

Abstract: A metal gasket is formed by first and second metal base plates laminated together. The first metal base plate includes one first half bead around the hole, and a first outer sub-bead section. The first outer sub-bead section is smaller than the first half bead, and is provided outside the first half bead. The second metal base plate includes one second half bead around the hole to project in a direction opposite to the first half bead, and a second outer sub-bead section smaller than the second half bead and provided outside the second half bead. The second outer sub-bead section projects in a direction opposite to the second half bead. When the first and second metal base plates are assembled, the first and second half beads face opposite to each other, and the second outer sub-bead section abuts against the first outer sub-bead section.

Abstract: Hybrid seals (117) are provided which include a metallic component (127) and a flexible, non-metallic, heat resistant component (129), e.g., graphite, which are fully integrated in the finished seal and thus not subject to delamination. The hybrid seals (117) can be produced from hybrid heat resistant strips (107) that can be wrapped into a preform (109) and then compression molded to form the hybrid seal (117). The hybrid strips (107) have a core (111) that comprises a flexible, non-metallic, heat resistant material and a metal mesh (113) knitted around the core. Prior to being formed into a preform (109), the core and the metal mesh are crimped together to begin the process of integrating the metallic and non-metallic components of the seal. The compression molding completes the integration.

Abstract: The invention relates to a sealing arrangement for connections on lines conducting hot gases, particularly exhaust gas lines on internal combustion engines, having at least one sealing element (9) closing a gas channel relative to the outer side thereof in a gas-tight manner, characterized in that the sealing arrangement (1) comprises a means (13, 15, 21) for reducing the thermal load of the sealing element (9).

Abstract: A cylinder head gasket is formed of at least one metal plate for forming the gasket. The gasket includes cylinder bores, and sealing devices or beads to surround the cylinder bores. A notch portion for reducing surface pressure is provided at a flat portion of the at least one metal plate where a rigidity of the sealing device is not affected.

Abstract: A gasket resistant to vibration and noise generation is interposed between a cylinder head and an exhaust manifold of an engine. The gasket includes a gasket main body interposed between a cylinder head and an exhaust manifold of an engine, a base plate affixed to the gasket main body and having a heat shielding portion integral with a base portion and extending to a side of the exhaust manifold, and a reinforcement plate fixed to the heat shielding portion, in which the reinforcement plate is not present at a region of the base portion in contact with the gasket main body, and a reinforcement rib is formed at the region of the base portion in contact with the reinforcement plate and a region of the heat shielding portion in contact with the reinforcement. The base portion is provided with a projected portion projected into a path of introducing secondary air from a side wall of the cylinder head to an exhaust port.

Abstract: A rocker cover assembly for a cylinder head of an internal combustion engine includes a rock cover, a gasket element and a stabilizing core. The gasket element is disposed between the rocker cover and the cylinder head, and includes a sealing material. The stabilizing core is inserted in the gasket element and surrounded at least essentially completely by the sealing material of the gasket element. The stabilizing core is isolated from the rocker cover such that the sealing material of the gasket element is arranged between the stabilizing core and the rocker cover.

Abstract: The disclosed multi-cylinder, poppet-valved engine, has replacement cylinder sleeves larger than the original sleeves, and laterally supported near their upper ends by an aluminum alloy plate having a continuous flange or boss projecting into the cylinder block. The flange has an inner perimeter surface having a profile fittingly engaging upper exterior cylindrical surfaces of the sleeves providing lateral support to the sleeves and heat transfer from the sleeves to coolant and to the block. The flange further provides a coolant groove that circulates coolant around the perimeter of the cylinder sleeves to further the heat transfer from the sleeves to the coolant and to the block. The plate is sealed to the block and head with a spacing and gasketing to accommodate thermal expansion while avoiding combustion gas leakage at the cylinder sleeve tops.

Abstract: In a cooling unit for an engine comprising a cylinder block 1 having a water jacket 4 which opens into the surface of the cylinder block 1 and which circulates a cooling water in surrounding relationship with a cylinder bore, and a gasket 11 held sandwiched between the cylinder head and the cylinder block 1 to seal therebetween, the gasket 11 is provided with a control board 21 which project into the water jacket 4 for controlling a flow of the cooling water, the control board 21 being formed to be arcuate in conformity to the profile of the water jacket 4 and disposed toward the intake port.

Abstract: A backpressure mechanism for a scroll type compressor to effectively prevent leakage of coolant; a recessed seat being provided at the top of a coolant passage at the center of a fixed scroll; a ring groove being disposed on the outer circumference of the recessed seat; a high-pressure sealing assembly comprised of a high-pressure ring, a sealing device and a high pressure ring seat and a medium-pressure sealing assembly comprised of a medium-pressure ring, a sealing device and a medium-pressure ring seat being respectively provided to the recessed seat and the ring groove; pressure from the compressed coolant causing an axially compromising vacuum unloading function to float the both sealing assemblies.

Abstract: A cylinder head gasket comprising a gasket plate for an engine in which at least one first coolant cavity is formed in the engine block adjacent to the cylinder head gasket, with the gasket plate comprising coolant passage openings via which the first coolant cavity is connectable to at least one second coolant cavity formed in the cylinder head of the engine; for improved cooling of the engine the cylinder head gasket comprises at least one flow conducting element for the coolant protruding from the gasket plate, the at least one flow conducting element being of such configuration and being joined to a coolant passage opening of the gasket plate in such a way that the flow conducting element forms a flow path with the coolant passage opening and is designed so as to engage in at least one of the first and second coolant cavities and to generate a directed flow of coolant at the outlet end of the flow path.

Abstract: A heat shield and gasket assembly has three members including a first heat shield, a second heat shield, and a gasket. Each of the members has a flange portion and the flange portion of the gasket is sandwiched between the flanges of the two heat shields. The flange portion of the gasket is thinner than the flange portions of the heat shields. The thinness of the gasket flange permits it to engage threaded assembly fasteners without compromising the thread integrity of the fasteners.

Abstract: A cylinder head gasket (211) includes one or more alignment holes (301) and one or more drain-back holes (303) disposed in an area of the cylinder head gasket (211). One or more push rods (211) are extendable through the alignment holes (301). The one or more drain-back holes (303) are formed such that the one or more push rods (211) are incapable of fitting through the one or more drain-back holes (303).

Abstract: A gasket and heat shield for sealing and insulating a flanged joint has a first body portion, which contains a gasket member and a second body portion disposed at an angle relative to the first body portion. The first body portion incorporates two openings to accommodate the fasteners, which will be utilized to secure members of a flanged joint together with the first body portion secured therebetween.

Abstract: A metal gasket used in an engine with a chain case, using a foam-rubber seal member shaped to withstand in practical use and having excellent long-lasting reliability and excellent durability. A total constitutive plate of the metal gasket is extended along the chain case to form an extended part. This extended part has a chain case hole. The foam-rubber seal member seals a chain case opening and a three-surface joining portion defined by the chain case, a cylinder block and a cylinder head. The foam-rubber seal member is a separate and distinct member and is a sheet-like and loop-like combination of layers of foam rubber and a metal core plate interposed between these foam rubber layers.

Abstract: A cylinder head gasket is formed of a metal plate, cylinder bore sealing devices formed on the metal plate for sealing around cylinder bores, and at least one water hole sealing device formed on the metal plate. The water hole sealing device has an inner sealing portion extending along and outside the cylinder bore sealing devices to have a space thereto and extending outside the water holes on a side of the cylinder bores, and an outer sealing portion situated outside the water holes and extending along the inner sealing portion. The inner and outer sealing portions surround a plurality of water holes therein, and continuously extend to join together to have at least one gas releasing portion between end portions of the water hole sealing device. Thus, even if the combustion gas leaks from the cylinder bores, the gas can be prevented from entering the water holes.

Abstract: A composite gasket includes a central core located between non-metallic outer facing layers. Each non-metallic outer facing layer has an outer core adjacent the central core. The outer cores can be either perforated or non-perforated. A bead is provided on the central core to produce a resilient biasing force that urges the outer facing layers into contact with respective mating surfaces to improve gasket sealing. The central core optionally has an elastomeric coating to improve sealing between the central core and the outer cores to prevent leakage between gasket layers.

Abstract: An insulator gasket is disclosed having gasket sections folded toward each other to form an angled gap of 1-15 degrees. Openings in the gasket sections are partially aligned and allow passage of fastener devices during assembly. The gasket includes a composite construction having a metallic backing plate connected to an insulator layer. The present invention utilizes either a continuous hinge or spaced apart straps.

Abstract: A dual purpose, multi-layered steel intake/exhaust manifold gasket is constructed from a rubber coated embossed single-layer intake manifold gasket attached to an uncoated embossed double-layer exhaust manifold gasket. The gaskets overlap at several discontinuous locations along a common edge by sandwiching the single layer intake manifold gasket between the two layers of the exhaust manifold gasket. Holes are provided in the rubber coated single layer at some of the overlapping locations to allow the two layers of the exhaust manifold gaskets to contact and be fastened together. An air gap is left between the two gaskets except for the areas of overlap to control heat transfer between the gaskets.

Abstract: A metal laminate type cylinder head gasket of the invention is basically formed of first and second metal plates laminated together. The first metal plate includes a heat preventing portion for defining a first hole for a cylinder bore, a main sealing portion situated around the heat preventing portion, and a base portion. The heat preventing portion shuts off heat from the cylinder bore thereat, and the main sealing portion forms a solid portion for sealing around the first hole. The base portion extends from the main sealing portion to substantially cover the entire area of the engine. The second metal plate includes a second hole with a diameter greater than a diameter of the main sealing portion, and is situated adjacent to the base portion of the first metal plate. The second metal plate is not substantially affected by heat in the cylinder bore.