Abstract: An anti-polish ring for an internal combustion engine is provided. The anti-polish ring includes an axially extending ring portion that is configured to scrape a top portion of a piston in a cylinder liner. The anti-polish ring is configured to accommodate passage of an intake or exhaust valve thereby. The anti-polish ring may include an alignment feature so that the anti-polish ring is inserted in a predetermined orientation in the cylinder. The anti-polish ring may include a heat shield and/or a seating member.

Abstract: An engine head gasket includes a base layer, an upper layer, and a lower layer. The base layer includes a base layer inner edge. The engine head gasket further includes an anti-preignition wrap defining a cylinder opening and wrapped around the base layer inner edge. The engine head gasket is configured with a combustion seal and selective thicknesses to direct a combustion sealing load to a cylinder block. The anti-preignition wrap shields angular corners of the base layer inner edge from a cylinder to limit preignition.

Abstract: An improved gasket assembly including a core layer and at least two facing layers disposed on opposite sides of the core layer is provided. The gasket assembly further includes first and second outer layers which are made of metal and are disposed on opposite sides of the facing layers from the core layer. The core, facing and outer layers all present at least one set of axially aligned openings. The first layer is bent towards the second layer by no greater than ninety degrees at the openings to present a first outer layer flange, and the second layer is bent by no greater than ninety degrees at the openings to present a second outer layer flange. The first and second outer layer flanges are in direct contact with one another to provide a gas tight seal around the set of axially aligned openings.

Abstract: A cylinder head gasket with a single layer carrier member, a sealing ring for sealing around the cylinder opening, and at least one protection layer. The sealing ring has a plurality of functional layers. A protection layer is positioned on at least one side of the sealing ring, and preferably on both sides. The sealing ring and protection layers are fixedly secured to the carrier member by welding.

Abstract: A multi-layer cylinder head gasket is provided. The cylinder head gasket includes a plurality of layers of material, each of the layers has a plurality of openings including at least one cylinder bore opening and at least one pushrod opening. Each of the layers has an edge which surrounds the at least one pushrod opening, and the pushrod openings of the layers are aligned axially with one another. An eyelet extends axially in each of the pushrod openings and covers the edges of the layers for protecting a pushrod extending through the respective pushrod opening. The eyelet is made of a material that is softer than the material of the plurality of layers.

Abstract: A valve seal has a sealing lip and a compressible portion. The valve seal is utilized to seal a valve guide and a stem. The valve guide has a height within a predetermined range of heights and the sealing lip sealingly engages the stem. The compressible portion has at least two articulating portions with a hinge portion between the two articulating portions. The compressible portion sealingly engages the valve guide and articulates to accept the valve guide without substantially deforming the lip or interfering with the stem.

Abstract: Gasket, comprising at least one through-opening to be sealed, at least one elastomeric sealing element associated with the through-opening, and a carrier for the sealing element, wherein the sealing element comprises at least one flexible sealing lip enclosing the through-opening in the form of a projection protruding in the direction of the through-opening axis, and embedded in the sealing element is at least one stiff inlay, which projects in the direction of the through-opening axis beyond a carrier area adjacent to the inlay; in order that the sealing element, while in operation, will not be damaged due to high stresses or will not become detached in some areas from the carrier, the inlay surrounds the through-opening in the shape of a ring and without interruption and forms a supporting element which supports the sealing element radially around the through-opening.

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: A cylinder head gasket for an internal combustion engine with a cylinder bore and a fluid hole includes a first metal plate having a curved portion around the cylinder bore and a folded portion extending from the curved portion, and a second metal plate laminated on the first metal plate and having a first full bead projecting toward the first metal plate. The first full bead is disposed on the folded portion. At least one secondary plate is inserted inside the folded portion.

Abstract: A metal laminate gasket includes a first metal substrate having a base portion and a folded portion, a second metal substrate laminated with the first metal plate, an intermediate plate disposed between the base portion and the second metal substrate, and a bead plate situated under the base portion. The bead plate includes a first full bead disposed around the first hole to project toward the base portion, and an outside portion disposed above the intermediate plate. The bead plate, first and second metal substrates and intermediate plate have first and second holes. The bead plate is formed to surround the first and second holes without extending to an entire area of the gasket. The total plate thickness of the first and second metal substrates, bead plate and intermediate plate at the full bead position is substantially same as that around the second hole.

Abstract: A vehicle e component is provided having a cavity with at least one opening for containing hydraulic fluid, and a closure sealing the opening, the closure is formed as a domed closure disc (1, 7) which is inserted into the opening (5) and deformed in a radial direction via the application of an axial force.

Abstract: A metal gasket for an internal combustion engine includes a first metal plate with a folded portion; a ring member with a sandwiched portion having a sealing bead and an extension portion, with the sandwiched portion being sandwiched in the folded portion to provide a primary sealing portion; a second metal plate laminated to the folded portion of the first metal plate so as to sandwich the extension portion to provide a secondary sealing portion; and a third metal plate sandwiched between the first metal plate and the second metal plate in a portion of the gasket separate from the sandwiched extension portion. In the event that the cylinder head lift becomes greater than the following capability of the sealing bead in the primary sealing portion, the secondary sealing portion provides excellent following capability relative to the lift.

Abstract: A cylinder head gasket is coated with an encapsulant that is mixed with a light color pigment to create a light colored encapsulant. A translucent topcoat is preferably coated over the encapsulant. The encapsulant is preferably an epoxy primer, the topcoat is preferably a silicone, and the pigment is preferably made from titanium dioxide or zinc oxide.

Abstract: A metal laminate gasket includes a first plate, intermediate plate and a second plate laminated together. The first plate has a curved portion for defining a hole to be sealed, and a flange extending outwardly from the curved portion. The intermediate plate is situated above the first plate laterally outside the flange. The second plate is situated above the intermediate plate and has a first bead disposed inside the intermediate plate and under the flange, and a second bead disposed outside the first bead and adjacent the flange. The second bead projects upwardly beyond the flange and has an inner section immediately outside the flange and an outer section outside the inner section. The inner section is inclined greater than the outer section.

Abstract: A crankcase is coupled to a lower end face of a cylinder block of an engine and includes first and second case halves coupled to each other in a plane perpendicular to joint surfaces of the cylinder block and the crankcase. A U-shaped seal groove is defined in one of the joint surfaces of the case halves. Enlarged recesses are made at opposite ends of the seal groove. A bar-shaped seal member having enlarged end portions formed at opposite ends thereof is mounted in the groove such that the enlarged end portions are filled in the enlarged recesses. Thus, it is possible to ensure accuracy of the positioning of the bar-shaped seal member without the need for a high level skill; thereby, reliably sealing portions of intersection between the joint surfaces of the cylinder block and the crankcase and the joint surfaces of the case halves of the crankcase.

Abstract: Multi-layered cylinder head seal, with a spacing layer that has openings corresponding to the number of combustion chambers taking cylinder bushings in a combustion engine, in the area of which a combustion chamber edging containing a soft iron ring is located, and in the edge areas at least partially limiting elements are provided, where the spacing layer is in functional contact with functional layers that have several selectable distances from both the associated combustion chamber edging as well as the associated limiting element and that are provided with sumps.

Abstract: A flat gasket for flange connections has a leakage rate below the limit value of 1*10?5 kPa*1/(s*m). The gasket assembly has a thick, areal, pressure-resistant core formed from at least one layer of graphite foil with a base weight of at most 1500 g/m2, or a multilayer sandwich of such graphite foils and metal interlayers. The core is embedded between two metal foils, and the surfaces that are remote from the core are covered by covering layers of graphite foil with a base weight of at most 350 g/m2. A ratio of the base weight of the graphite foil of the covering layers to the base weight of the graphite foil of the core lies between 1:3 and 1:7.

Abstract: An MLS combustion cylinder head gasket includes a relatively thick soft metal stopper having a square nosed aperture edge adapted to face a flame front in a cylinder head bore. The square nosed edge is designed to eliminate the trapping of hydrocarbons, which creates a major source of emission issues. The soft metal stopper is preferably formed of copper, although other soft metals capable of withstanding high temperatures may be employed. The stopper is formed of a malleable metal ring, and is formed over and about the edge of a combustion aperture edge of the gasket via a forming die that both shapes and clinches the metal ring respectively about and to the circumferential edge of each combustion aperture. The stopper, applied to the center spacer layer of the gasket, is adapted to flow into crevices and to thus “conform” to the normally variable spacing between engine block and cylinder head.

Abstract: An improved combustion gasket is disclosed incorporating a self-energizing combustion seal flange. The flange includes at least one valley that serves to redistribute combustion explosion forces acted upon the gasket during operation of the engine to provide improved combustion sealing and to extend flange life.

Abstract: A metal cylinder head gasket includes a spacer plate; a sealing layer superposed on the spacer plate; an opening in the spacer plate and the sealing layer for surrounding a combustion chamber of an internal-combustion engine and a full bead provided in the sealing layer and surrounding the opening. The full bead has a crest, and first and second bead feet situated radially inward and, respectively, radially outward of the crest. An annular overlay surrounds the opening and is positioned between the spacer plate and the sealing layer and is in engagement with the full bead. The annular overlay has a radially inner edge face in alignment with the opening edges; and a radially outer edge face situated between the crest and the second bead foot. The sealing layer further has a half bead surrounding the full bead and being spaced radially outward from the second bead foot.

Abstract: A spring back fire ring is provided in a gasket assembly that is used for sealing combustion openings. In addition to the spring back fire ring, the gasket assembly includes a main gasket body and upper and lower gasket layers. The spring back fire ring has first and second ends. The first end is biased upwardly around the periphery of the combustion openings. The second end is positioned proximate to the main gasket body. In one embodiment, the second end is integral with the main gasket body.

Abstract: The invention refers to gaskets suitable for usage in internal combustion engines. The gaskets according to the invention comprise at least one metal layer, the metal layer having one or several openings in accordance with the number and location of the combustion chambers, and, if present, coolant and lubricant passageways of the internal combustion engine, and a metal ring located around the combustion chamber opening(s), the metal ring being laminated on the metal layer and joined to the latter over a plastic layer. The plastic layer provides the gasket in the region of the metal ring with plastic, plastic/elastic or elastic characteristics. Furthermore the invention refers to a method for manufacturing the gasket according to the invention.

Abstract: A seal assembly and method of making a seal assembly for a transmission that provides a plurality of pressurized fluid connections. The seal assembly is formed between two adjacent plates that have corresponding holes that include axially extending perimeter walls. An elastomeric sealing element is over molded onto a first plate to line the holes and cover the perimeter walls. The second plate is assembled to the first plate.

Abstract: A multi-layer steel cylinder head gasket includes a spacer layer between two beaded mirror image outer layers. A wire ring stopper extends about the boundary of a combustion opening in the stopper layer; the ring is radially spaced from the mirror image beaded outer layer extremities. The ring is covered by a flange folded thereover; the flange extends radially outwardly to overlie the boundary edge of the stopper layer at the combustion opening. The stopper ring pre-stresses the gasket interface at the combustion opening upon securement of a cylinder head to an engine block. Because the stopper ring is spaced from the beaded outer layers, the stresses imposed on the wire ring are decoupled from the beaded outer layers, and lower incidences of bead cracking are realized. In addition, the wire ring diameter is greater than the thickness of the stopper layer, reducing unnecessary compression loads on the stopper layer.

Abstract: A gasket body has a combustion opening and a coolant opening close to the combustion opening to define a narrow region of the gasket between the openings. An inner armor layer has an inner C-shaped section folded over an edge of the combustion opening adjacent to the coolant opening. The inner armor layer has top and bottom portions extending over the top and bottom surfaces of the narrow region of the gasket body. An outer armor layer has an outer C-shaped section folded over the inner C-shaped section. The outer armor layer has top and bottom portions extending over the top and bottom portions of the inner armor layer. The bottom portion of the outer armor layer extends across the entire width of the bottom surface of the narrow region of the gasket body and has a second C-shaped section folded up and over an edge of the coolant opening adjacent to the combustion opening.

Abstract: A flat gasket includes a gasket body and at least one eyelet enclosing the gasket body. The gasket body is formed of a pressure-resistant core which is resistant to temperatures of at least 150° C. and a covering that completely covers flat outer sides of the core and is made of a gas-tight foil of an organic polymer having a long-term temperature resistance of at least 150° C. The eyelet or eyelets enclose the gasket body with a gas-tight joining. The core is formed of a plastic or elastomer reinforced with fibers and/or fillers, or it is formed of mica or graphite. If mica or graphite are used, the core is preferably formed of layers disposed alternately on top of one another and formed of graphite foils and metal foils or layers of mica and metal foils.

Abstract: A seal structure in an engine, including a seal member interposed between a cylinder head having a slanting face portion at least at an intermediate portion of its upper end face to which a valve-operating cam chamber opens, and a head cover coupled to the upper end face of the cylinder head by a bolt to close the valve-operating cam chamber. The head cover has a fit wall portion formed thereon and fitted to an inner peripheral surface of the valve-operating cam chamber, and the seal member is mounted in a seal groove provided in an outer peripheral surface of the fit wall portion to come into close contact with an inner peripheral surface of the cylinder head. Thus, an interference can be provided equally at various portions of the seal member irrespective of the number of bolts used, and the seal member can always exhibit a good seal function.

Abstract: An improved multi-layer gasket for an internal combustion engine comprises an inner spacer layer sandwiched between top and bottom surface layers. The inner spacer layer provides cylinder openings designed to correspond with each cylinder bore in the engine block. Channels cut in the spacer layer extend outwardly from each cylinder opening. A combustion-sealing member formed with tabs extending outwardly from the circumference of the sealing member is received into each cylinder opening and orientated with each tab residing in a channel. Each tab is embossed at its distal end and eyeletted with an eyelet to the top and bottom layers. Tabs retain the sealing member in the cylinder opening, positively locate the sealing member over the cylinder bores on the engine block during installation and permit the sealing member to float in the cylinder bore during operation of the engine independently of the spacer layer.

Abstract: A gasket is provided that is suitable for use in connection with a cylinder head. The gasket includes a first outer plate including a compensating portion, a second outer plate including a compensating portion, and a compensating plate positioned between said first and second outer plates. Preferably, at least one of said first and second outer plates includes a bead positioned outside of, and in close proximity to, said compensation portion of said plate. The compensating plate includes a compensating element and an edge portion. In a preferred embodiment, the area between the compensating portions of said first and second outer plates defines a compensating area and said compensating element is positioned within said compensating area. If desired, the gasket may also include a spacer plate.

Abstract: A coating for a cylinder head gasket, which contains a modified silicone system having a vinyl ether incorporated therein. The modified silicone system is preferably UV-curable, the preferred vinyl ether in the silicone system is cyclohexanedimethanol divinyl ether, and the coating consists completely of reactive components prior to curing.

Abstract: A snap-lock attachment element for connecting a multi-layered gasket having at least two metallic gasket layers together in a sealing gasket is disclosed. A first gasket layer includes an aperture with at least two fingers extending radially inwardly. A second gasket layer includes a second aperture having a supporting member with slots therein. The first gasket layer is pressed onto the second layer such that the fingers engage the slots of the second gasket layer in snap-lock engagement.

Abstract: A gasket of non-conductive material formed of layers of a ceramic between which is embedded a wire circuit for connecting spark electrodes, high voltage connectors and ground connectors of a spark ignition system. The wire circuit includes small diameter wires surrounding gasket openings for bounding and sealing the edges of combustion chambers defined by cylinders in an internal combustion engine. The small diameter wires are insulated by the high dielectric layers of the gasket as well as by high dielectric wrappings and a sheath of high dielectric material bonded to and within the layers forming to gasket.

Abstract: A static gasket for sealing mating flanges which are clamped together by at least one fastener. A carrier holds the seal in a groove and the seal is protected from over compression by a compression limiter which is inserted into an aperture in the carrier. The compression limiter is crescent shaped to permit the insertion of a fastener stud into a through hole formed between the compression limiter and the aperture in the carrier.

Abstract: A metal cylinder head gasket of the invention is used for an internal combustion engine. The gasket is basically formed of a metal plate, a sealing device, and a thin support portion. The metal plate includes a plurality of first holes corresponding to cylinder bores, at least one second hole corresponding to another hole, and a side portion around the second hole. The sealing device is disposed on the metal plate outside the side portion relative to the second hole, and surrounds the second hole for sealing the same. The thin support portion is located inside the sealing device and is disposed on a part of the side portion around the second hole without extending the entire side portion. The support portion supports a part of a pressure applied thereto to securely seal around the second hole.

Abstract: A valve cover gasket assembly for an automotive engine includes a rigid core having a plurality of pairs of notches, with each pair comprising one notch on the inner edge of the core and one notch on the outer edge. The assembly further includes a rigid stop member for each pair of notches, each stop member having a portion defining a fastener hole and a spaced apart lug. The stop members are secured to the core by engagement with the notches. When secured in this manner, the portion of each stop member defining the fastener hole is offset laterally from the core. An elastomeric envelope having elastomeric beads is applied over the core and a portion of each stop member, so that the beads extend continuously around the length of the assembly.

Abstract: A metal laminate gasket of the invention is used for an internal combustion engine having a sealing hole and a plurality of bolt holes situated around the sealing hole. The gasket is formed of first and second metal plates having holes corresponding to the sealing hole and the bolt holes of the engine. The second metal plate includes a base portion, a curved portion extending from the base portion to define one hole therein and located inside one hole in the first plate, and a flange extending from the curved portion and disposed over the first plate. The flange has a plurality of wide flange portions and narrow flange portions alternately arranged to each other such that the wide flange portions are located near the bolt holes to support high tightening pressures applied thereto. A bead may be formed on one or both of the first and second plates outside the flange. The bead may have wide and narrow portions to provide equal surface pressures as a whole.

Abstract: A metal laminate gasket of the invention is formed of first and second metal plates and an annular plate. The first metal plate has a base portion, a curved portion extending from the base portion to define a first opening corresponding to a hole of the engine to be sealed, and a flange extending from the curved portion and situated over the base portion. The annular plate is situated between the flange and the base portion and has the width at least partly shorter than that of the flange. The second metal plate is situated over the first metal plate at a side where the flange is located. The second metal plate has a second opening at least partly smaller than an outer diameter of the flange, and an edge portion around the second opening. The edge portion of the second plate is at least partly retained between the flange and the base portion. Thus, the first and second metal plates are assembled together with the annular plate.

Abstract: A gasket has a flat body with openings provided for combustion chambers, lubricating fluid passages, engine coolant passages, and studs mounting a cylinder head on an engine block. Each of the combustion chamber openings is bordered by a sealing element defining an armor ring. Each armor ring has a tab located on its outer edge, extending over at least part of its periphery, attached to the gasket body enabling the armor ring to move perpendicularly to and/or in the plane of the gasket body.