Abstract: A sealing system for an engine comprising a single layer of sheet material, the sheet having an upper surface adapted to sealably contact a first engine component and a lower surface adapted to sealably contact a second engine component, and bead portions profiled on the gasket, where the gasket profile is optimized with varying heights and widths so as to create portions of varying stiffness adjacent to one another. The bead portions are profiled so as to be concentric with a combustion or cylinder chamber of the engine, and the bead portions include a portion of high stiffness adjacent to a portion of high recovery, the portion of high stiffness having a sharper angle protruding away from the plane comprising the single layer gasket than for the adjacent portion of high recovery. The optimized profile allows use of single layer gaskets to replace multiple layer gaskets.

Abstract: A fuel cell separator member of a fuel cell stack includes a metal separator on which a seal bead is formed, and a pressure receiving member provided on a surface of the metal separator, separately from the metal separator. The pressure receiving member is provided along a seal bead, and the height of the pressure receiving member is lower than the height of the seal bead in the state where the tightening load is applied and no impact load is applied.

Abstract: The present disclosure relates to an internal combustion engine for a motor vehicle. The internal combustion engine has a cylinder head, a crankcase and a cylinder head gasket. The cylinder head, the cylinder head gasket and the crankcase form a sealing region for sealing at least one combustion chamber. A first recess is arranged within the sealing region and at a distance from the at least one combustion chamber. A first leakage gas passage extends from the first recess to a first surface exposed to the environment of the internal combustion engine or to a ventilation passage of the internal combustion engine.

Abstract: A cylinder head gasket to be mounted between a cylinder block and a cylinder head of an engine includes: at least one bore-hole plate having a bore hole which corresponds to a cylinder bore of the cylinder block; and a main plate disposed so as to surround the bore-hole plate, wherein the bore-hole plate and the main plate are separated from each other without being in contact with each other, while being connected with each other with a heat insulating member interposed between the bore-hole plate and the main plate.

Abstract: An object of the present invention is to provide a gasket capable of improving sealing performance by solving a non-uniform surface pressure distribution by a grommet structure. Provided is a gasket which is formed by laminating an upper layer, an intermediate layer, and a lower layer and is provided with a penetration hole and a seal bead formed at the upper layer and the lower layer to surround the penetration hole in a ring shape and to be symmetrical with respect to the intermediate layer in the vertical direction, in which the intermediate layer includes a fold-back portion, a surface pressure adjustment portion, and a bead contact portion, a plate thickness of the fold-back portion is thicker than that of the bead contact portion, and the surface pressure adjustment portion sets an upper step to be different from a lower step.

Abstract: A gasket retainer that is absent sharp corners, has apertures of reasonable dimensional tolerance, and may be conveniently made by a variety of manufacturing processes. The retainer is made from thin flat springy material that readily returns to form after slight bending. Representative gasket capturing apertures are of smoothly non-convex outline with major dimension sufficiently large to allow passage of a ring shaped gasket turned on edge and minor dimension sufficiently small to engage, on approximately opposite circular segments that each engage along less than one third of a gasket circumference, a cavity or groove on the outside diameter periphery of the gasket turned flat parallel to the retainer material sheet. Fasteners may be retained by similar apertures.

Abstract: An exhaust device of an engine is provided, which includes an exhaust port formed in a cylinder head and connected to an exhaust aperture of a cylinder, an exhaust manifold disposed on a side surface of the cylinder head and formed with a first exhaust passage, an exhaust path constituting part disposed on a side of the exhaust manifold opposite from the cylinder head, and formed with a second exhaust passage, a catalyst disposed on a downstream side of the exhaust path constituting part, an upstream gasket disposed between the side surface of the cylinder head and an upstream connecting member of the manifold, and a downstream gasket disposed between a downstream connecting member of the manifold and an exhaust-manifold-side connecting member of the exhaust path constituting part. The upstream gasket has a larger thermal resistance in an exhaust gas flow direction than the downstream gasket.

Abstract: A carrier frame seal for use in engine and cylinder components of internal combustion engines having improved sealing effect in the region of the connecting webs between different regions of the carrier frame.

Abstract: Provided is a seal bead structure of a gasket capable of reducing the reactive force generated in a common bead portion provided between multiple through-holes and thereby capable of achieving a stable sealing function by means of aligning the compression property over the entire bead. In order to achieve this, two through-holes are provided in a row in the flat portion of a metal gasket, with one seal bead provided on the edge of one through-hole, the other seal bead provided on the edge of the other through-hole, and a common bead portion for the both seal beads provided in the intermediate position between the both through-holes, the common bead portion having a two-stage half bead shape in which the half beads are formed on two stage in the same direction.

Abstract: An outboard marine propulsion device comprises an internal combustion engine having a cylinder head and a cylinder block; and an exhaust manifold that discharges exhaust gases from the engine towards a vertically extending catalyst housing. The exhaust manifold has a plurality of horizontally extending inlet runners upwardly that receive the exhaust gases from the engine, and a vertically extending collecting passage that conveys the exhaust gases from the plurality of horizontally extending inlet runners to a bend that redirects the exhaust gases downwardly towards the catalyst housing.

Abstract: A carrier frame seal for use in engine and cylinder components of internal combustion engines having improved sealing effect in the region of the connecting webs between different regions of the carrier frame.

Abstract: A gasket for a vehicle is configured to improve performance of a turbocharger according to enhanced sealing performance. The gasket is disposed at a coupling portion of a cylinder head of an engine and an exhaust manifold adapted to supply exhaust gas from the cylinder head to a turbocharger.

Abstract: A gasket is provided which is intended to improve its sealing performance by attaining a further stabilization of the posture thereof in a groove.

Abstract: A metal gasket for establishing a seal between a first member and a second member is provided. The metal gasket includes at least one functional layer with an inner periphery which surrounds an opening. The functional layer also has a generally flat portion and an embossment bead with the embossment bead being spaced from the inner periphery and surrounding the opening. The embossment bead extends in a first direction away from the generally flat portion, has an indentation which extends in a second direction opposite of the first direction and has a bead height of greater than 0.15 mm and no greater than 0.30 mm.

Abstract: A metal bead gasket (11) with a sealing region (12) having at least one bead (9), at least one bracing region (13) having at least one recess (21) for receiving a bracing means (5), in particular a screw, and at least one intermediate region (14) which connects the sealing region (12) to the bracing region (13). The intermediate region (14) is configured to be more deformationally unstable perpendicularly to the bracing direction (4) than the sealing region (12) and/or the bracing region (13).

Abstract: A gasket assembly having a secondary elastic sealing bead positioned radially inwardly of the primary sealing bead. The secondary sealing bead extends circumferentially about the aperture and radially inwardly of the primary sealing bead. A stopper layer is disposed adjacent at least a portion of the gasket layer and extends radially from the outboard region to the inboard edge to radially overlap the secondary sealing bead and the primary sealing bead. The secondary sealing bead has an “S-type” structure and provides increased gasket resiliency adjacent the inboard edge.

Abstract: The purpose of the invention is to make it possible to perform pressurized leak tests on open loop chain case-side oil seal beads. The purpose is achieved with a cylinder head gasket, which is fitted between the cylinder block and the cylinder head and seals the three-surface sealing region obtained by combining the cylinder block, the cylinder head and the chain case, and in which an open-loop chain case-side oil seal bead that is open toward the chain case is provided in the chain case-side end of the gasket. The cylinder head gasket is characterized in that a closed-loop leak test bead is provided in the cylinder head gasket along a chain case-side oil seal bead and a leak test pressure supply path for supplying leak test pressure to the space enclosed by the leak test bead is provided.

Abstract: A multi-layer gasket for establishing a seal between a first member (such as a cylinder head) and a second member (such as an engine block) is provided. The multi-layer gasket includes a pair of outer functional layers and at least one inner functional layer. Each layer has a full combustion bead that encircles an opening, and the full combustion beads of all of the layers are aligned radially with one another. Each layer also has an outer periphery, and the outer periphery of the inner layer is disposed radially between the aligned full combustion beads and the outer peripheries of the outer layers. The outer layers also include half beads adjacent their outer peripheries.

Abstract: A system for an engine is provided. In one embodiment, the system includes a cylinder head, an engine block, and a gasket assembly sealing the cylinder head to the engine block. Further, the gasket assembly may include a plurality of apertures positioned between an inner beading region and an outer beading region to concentrate a clamping load.

Abstract: A gasket for sealing a space between a first member and a second member fastened by a fastening member so as to face each other, the gasket being fitted in an annular mounting groove formed on one of facing surfaces of the first member and the second member. The gasket is provided with an annular gasket body formed along the mounting groove; a plurality of longitudinal ribs, made up of protruding bodies, provided on a side surface of the gasket body facing a side wall of the mounting groove, the longitudinal rib protruding along height direction corresponding to depth direction of the mounting groove of the gasket body and protruding at intervals in circumferential direction of the gasket body; and a transverse rib provided on the side surface, the transverse rib being made up of a protruding body continuously protruding over the entire circumference of the gasket body.

Abstract: The invention relates to a metallic flat gasket with at least one metallic gasket layer, which is mainly flat and shows a first and second surface, wherein a plane of the gasket runs centered between said flat areas, wherein a camber is formed within the gasket layer, which protrudes over the first surface of the gasket layer and which has a larger length than width, wherein the camber possesses a first level given by a virtual level, which runs in parallel to the plane of the gasket through the foot of the camber on the first surface of the gasket layer and a second level, given by a further virtual, which runs through the highest point of the camber and also parallel to the plane of the gasket of the gasket layer, wherein the camber possesses a slope area that ascends between the two levels. The slope area is provided with an undulating structure such that it comprises at least two waves each with a wave crest and a wave trough.

Abstract: There is provided, in one aspect of the present description, an engine. In one example, the engine comprises a cylinder block, a cylinder head, a sheet metal gasket interposed between the block and the head, a first projection projecting outwardly and laterally from a side portion of the block, and a second projection projecting outwardly and laterally from a side portion of the head, the first projection and the second projection facing each other along a coupling surface between the block and the head. The engine further comprises an extension extending from a main body of the sheet metal gasket and located between the first projection and the second projection, and a resilient portion which is provided in the extension, formed resiliently in a direction perpendicular to the coupling surface, and compressed between the first projection and the second projection when the head is fastened on the block.

Abstract: A cylinder head gasket 1 has gasket base plates 4 and 5 including: 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. 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.

Abstract: A metallic flat seal, in particular a cylinder head gasket, includes at least one through-hole, a functional layer, a spacer layer, and a stopper layer which is arranged between the functional layer and the spacer layer, as well as a closed sealing bead around every through-hole in the functional layer, wherein the sealing bead points in the direction of the stopper layer, the seal additionally comprising an embossed closed contour around every through-hole in that least the stopper layer, the functional layer or the spacer layer, wherein the contour forms a fixing aid. A method is also provided for making such a gasket.

Abstract: A gasket is provided having a first metallic layer and a second metallic layer. Both layers have combustion openings where each opening is surrounded by an edge of the layer. The first layer defines several beads and lands unitary with one another. A coating is located within one of the beads of the first layer and below the associated lands. The second layer has several lands and a bead in a particular orientation with respect to the beads and lands of the first layer.

Abstract: In order to provide a flat gasket comprising at least one gasket sheet, which comprises at least one through-opening and at least one sealing bead, which extends around the through-opening and is delimited at the side facing the through-opening by an inner bead foot, and at the side remote from the through-opening by an outer bead foot, and at least one deformation-limiting device, which comprises at least one stopper element disposed on a stopper-supporting surface of the gasket sheet, in which flat gasket the effective stopper height of the stopper element may easily be set to a value that differs from the thickness of the stopper element, the stopper-supporting surface is shifted in a direction extending at right angles to the stopper-supporting surface by an offset.

Abstract: A cylinder head gasket includes a plurality of seal plates 1 to 4 so that a combustion gas that leaks through a gap between the respective seal plates is reliably sealed. The cylinder head gasket includes the plurality of seal plates 1 to 4, which are held between a cylinder head and a cylinder block having a cylinder bore. The plurality of seal plates 1 to 4 are adhered to each other in a circumferentially continuous manner around combustion chamber holes 1a to 4a, and the combustion gas that leaks through the gap between the respective seal plates is reliably sealed within an adhered portion 5 of the respective seal plates.

Abstract: An interlockable bead seal for a bipolar plate is provided. The interlockable bead seal includes a first elongate bead formed on a first plate and a second elongate bead formed on a second plate. The first elongate bead has a sealing surface and the second elongate bead has a trough. An interlockable bipolar plate having the interlockable bead seals, and a fuel cell stack formed from a plurality of the interlockable bipolar plates, are also provided. A lateral slippage between components of the fuel cell stack is militated against by the interlockable bipolar plates.

Abstract: A coupling structure for an absorption refrigeration circuit includes a gasket held between two coupling members. The gasket has a protruding part that elastically deforms when clamped between adjoining faces of the two coupling members.

Abstract: A gasket has an upper face and a lower face. The gasket comprises an adhesive element that can have a combination of adhesion strength and compression set resistance. The adhesive element can be carried by a carrier sheet or may be directly applied to sealing surfaces in contact with the gasket.

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 multilayer metal static cylinder head gasket for establishing a gas/fluid-tight seal between a cylinder head and an engine block includes a pair of functional layers having openings configured to register with a combustion chamber and annular seal beads configured to form a seal about the openings. The gasket further includes a primary compression limiter formed of a separate piece of material from the functional layers. The primary compression limiter extends at least partially about the openings to facilitate inhibiting the seal beads from being fully flattened between the cylinder head and the engine block. The pair of functional layers have nested protrusions forming a secondary compression limiter spaced radially outwardly from the primary compression limiter to further inhibit the seal beads from being fully flattened between the cylinder head and the engine block.

Abstract: A fuel injection system for an internal combustion engine includes a fuel injector pocket, formed within a cylinder head, for housing an injector which sprays fuel into a combustion chamber defined by the cylinder head and a piston crown. The injector is mounted with a conical isolator which is loaded at a lower, elastic rate during lower power operation, with the conical isolator being stacked solid between a tapered portion of the injector and a corresponding tapered portion of the cylinder head during high power operation of the engine and injection system. The isolator controls unwanted injector ticking noise, while protecting the integrity of the injector's tip seal by preventing excessive axial displacement of the injector during higher load operation.

Abstract: An exhaust manifold gasket having at least two layers and a series of tabs and recesses. The gasket has a first outer layer and a second outer layer each with an outer surface, an inner surface, two bolt hole flanges, and a central aperture. The surfaces are bounded by an outer perimeter portion, with locator tabs and recesses. A first inner layer having an outer surface, an inner surface, two bolt hole flanges, and a central aperture. The surfaces are bounded by an outer perimeter portion with two sets of foldable tabs. The first inner layer also has a bead circumferentially around the central aperture. A second inner layer may be provided having an outer surface, an inner surface, two bolt hole flanges, and a central aperture. The surfaces are bounded by an outer perimeter portion with foldable tabs and recesses, and a bead circumferentially around the central aperture.

Abstract: The invention relates to a metallic flat gasket comprising a gasket layer (2) having at least one combustion chamber through-opening (3) which is surrounded by an elastically deformable sealing element (4) which is configured in the form of an undulatory profiling (40) in the gasket layer (2) in such a way that on each of the surfaces (21, 22) of the gasket layer (2) at least two wave crests (41) and two wave troughs (42) are present. The thickness (hyl) of the gasket layer (2) in the region of the sealing element (4), in the unloaded state, is greater than the original thickness (alpha) of the gasket layer. Apart from the undulatory profiling (40), no further sealing or support elements are present around the combustion chamber through-opening (3). The sealing element has, when subjected to linear compression of from 500 to 2,800 N/mm in a direction which is substantially perpendicular to the plane (E) of the gasket layer, a thickness which is greater by from 0.05 to 0.

Abstract: A metallic gasket including a base plate having a convex metal bead formed, by bending the base plate, between a combustion chamber opening and on the outer periphery portion of the base plate, and a first thickness-increased portion formed thicker than the remaining portions of the base plate to provide a difference in thickness, by which a surface pressure is made to concentrate on the first thickness-increased portion to seal a joint between a cylinder head and a cylinder block when the metallic gasket is disposed between the joint surfaces of the cylinder head and the cylinder block and fastened by clamping bolts. An elastic sealing material is fixed to the convex portion of the metal bead and filled in a concave portion on the reverse side of the base plate to form a rubber bead, and the sealing material is deformed under compression in the through-thickness direction in cooperation with the deformation of the metal bead when the gasket is fastened with clamping bolts.

Abstract: A gasket for a vehicle is configured to improve performance of a turbocharger according to enhanced sealing performance. The gasket is disposed at a coupling portion of a cylinder head of an engine and an exhaust manifold adapted to supply exhaust gas from the cylinder head to a turbocharger.

Abstract: One aspect of the invention relates to a cylinder head gasket provided with at least one opening corresponding to a combustion chamber of an internal combustion engine. The gasket has a function layer with a full bead and an annular support with a bead. The bead of the annular support is arranged on the side of the full bead which is oriented away from the combustion chamber. Another aspect of the invention relates to a cylinder head gasket having an upper functional layer, an annular support and a lower functional layer. The annular support is arranged between the upper and lower functional layers and is adjacent to the lower functional layer. The upper functional layer comprises one full bead, and the lower functional layer has a bead arranged on the side of the full bead which is oriented away from the combustion chamber.

Abstract: A multi-layer insert for a gasket having a retention tab having a first position and a second position is provided. The multi-layer insert includes a first plate, a second plate having the retention tab formed therein, and a third plate. The first plate and the second plate are coupled to the third plate. The retention tab in the first position partially defines a first profile of the second plate and the retention tab in the second position extends outwardly from the first profile of the second plate. An indent formed in the third plate receives a portion of the second plate when the retention tab is placed in the second position.

Abstract: A system may include a first member, a second member, a gasket and a pressurized fluid. The first member may include a first recess. The second member may include a second recess adjacently opposing the first recess. The second member may matingly engage the first member and may define a volume therebetween. The gasket may include a cross section having opposing first and second legs and a central portion disposed therebetween. The first leg may be received in the first recess. The second leg may be received in the second recess. The pressurized fluid may be disposed between the first and second legs and may urge the first and second legs into sealing engagement with the first and second recesses, respectively.

Abstract: The invention relates to a metal cylinder head gasket provided with at least one opening corresponding to a combustion chamber of an internal combustion engine, comprising a function layer and an annular support arranged thereon. The functional layer comprises one full bead. The cylinder head gasket is characterized in that the annular support comprises one full bead which is defined on the functional layer, and the annular support comprises one bead which is arranged on the side of the full bead which is oriented away from the combustion chamber The invention also relates to a metal cylinder head gasket provided with at least one opening corresponding to a combustion chamber of an internal combustion engine, comprising an upper functional layer, an annular support and a lower functional layer. The annular support is arranged between the upper functional layer and the lower functional layer and is adjacent to the lower functional layer.

Abstract: A bead seal structure is disclosed for sealing between plates of a fuel cell system, wherein the bead seal structure militates against a leakage of fluids from the fuel cell system and a cost thereof is minimized.

Abstract: A metal laminate gasket includes a plurality of metal plates including a first metal plate having a first hole to be sealed and a bead around the first hole, and a second metal plate laminated under the first metal plate and having a second hole corresponding to the first hole. Concavities and convexities are formed at the second metal plate concentrically around the second hole for increasing an apparent plate thickness of the second metal plate. The concavities and convexities are provided continuously at a position corresponding to the foot portion or the top portion of the bead of the first metal plate. The concavities and convexities have a height and width smaller than those of the bead, and have a deformation characteristic due to a surface pressure when compressed, smaller than that of the bead.

Abstract: The invention relates to a metallic flat gasket (1) with at least one gasket layer (2), in which at least one through opening (3) is present, which is surrounded by a sealing area (4), in which at least one elastically deformable element (5) surrounding the through opening (3) is arranged, and an optional, at least one functional area (6) with at least one elastically deformable sealing or supporting element (7), which does not separately surround a single through-opening, where outside of the at least one sealing area (4) and the optional at least one functional area (6) on at least one of the surfaces (21, 22) of at least one of the gasket layers (2) an area is surface structured in such a way that the gasket layer (2) in this area has a thickness that is larger than the original thickness of the gasket layer (2).

Abstract: A gasket has a first active layer with a bead. A first spacer layer is located below the first active layer. An intermediate layer is provided with a wave portion. The intermediate layer is located below the first spacer layer. A bottom spacer layer is located beneath the intermediate layer. The bottom spacer may have a bead.

Abstract: Cylinder head gasket with a gasket plate comprising a plurality of sheet metal layers and at least one combustion chamber opening, an inner layer being arranged in the gasket plate directly between two functional layers having sealing beads arranged one over the other, which enclose the combustion chamber opening and have bead feet lying in the planes of the functional layers and bead crests with which sealing beads of the two functional layers all project over the functional layers in a first direction extending perpendicularly to the gasket plane, at least one ring zone of the inner layer being clamped between the bead feet of the one functional layer and at least one bead crest of the other functional layer when the gasket is pressed; to minimize arching of this ring zone, it is stiffened and/or those ring zone regions against which at least one bead crest of one functional layer lies when the gasket is pressed are supported by bead feet of the other functional layer.

Abstract: A gasket for sealing between a cylinder head and a camshaft cover includes a seal portion that defines a first region and a second region. The first region seals a perimeter of a camshaft chamber, and the second region seals a perimeter of a PCV chamber. A membrane extends across the second region to define a baffle for the PCV chamber that prevents oil from sloshing up from the crankcase into the PCV chamber. The membrane is integrally formed with the seal portion from the same seal material.

Abstract: The invention relates to a flat seal, in particular an exhaust-gas-side seal, for an internal combustion engine, formed by an at least one-layer sealing element, which is provided with an opening, and a carrier element, which accommodates and guides the same with play and which is provided with screw through-holes, where the components that guide the sealing element project beyond the footprint of the carrier element, and the carrier element and/or the sealing element is provided with at least partially raised areas.

Abstract: An exhaust manifold gasket having at least two layers and a series of tabs and recesses. The gasket has a first outer layer and a second outer layer each with an outer surface, an inner surface, two bolt hole flanges, and a central aperture. The surfaces are bounded by an outer perimeter portion, with locator tabs and recesses. A first inner layer having an outer surface, an inner surface, two bolt hole flanges, and a central aperture. The surfaces are bounded by an outer perimeter portion with two sets of foldable tabs. The first inner layer also has a bead circumferentially around the central aperture. A second inner layer may be provided having an outer surface, an inner surface, two bolt hole flanges, and a central aperture. The surfaces are bounded by an outer perimeter portion with foldable tabs and recesses, and a bead circumferentially around the central aperture.

Abstract: An exhaust manifold gasket assembly having at least two layers and a series of tabs and recesses. The gasket has a first outer layer with an outer surface, an inner surface, two bolt hole flanges, a central aperture, and internal square cut-outs. The surfaces are bounded by an outer perimeter portion, with foldable tabs. A first inner layer and a second inner layer each with an outer surface, an inner surface, two bolt hole flanges, a central aperture, and pairs of internal slits. The surfaces are surfaces bounded by an outer perimeter portion, with locator tabs. Each inner layer has a bead circumferentially around the central aperture. A second outer layer may be provided having an outer surface, an inner surface, two bolt hole flanges, a central aperture, and internal square cut-outs. The surfaces are bounded by an outer perimeter portion, with recesses.