US20100176558A1 - Metallic flat gasket - Google Patents

Metallic flat gasket Download PDF

Info

Publication number
US20100176558A1
US20100176558A1 US12/450,972 US45097208A US2010176558A1 US 20100176558 A1 US20100176558 A1 US 20100176558A1 US 45097208 A US45097208 A US 45097208A US 2010176558 A1 US2010176558 A1 US 2010176558A1
Authority
US
United States
Prior art keywords
gasket
gasket layer
layer
metallic flat
compensating portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US12/450,972
Other languages
English (en)
Inventor
Georg Egloff
Kurt Hoehe
Guenther Unseld
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of US20100176558A1 publication Critical patent/US20100176558A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/08—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing
    • F16J15/0818—Flat gaskets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/08—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing
    • F16J15/0818—Flat gaskets
    • F16J15/0825—Flat gaskets laminated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/08—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing
    • F16J15/0818—Flat gaskets
    • F16J2015/085—Flat gaskets without fold over

Definitions

  • the invention relates to a metallic flat gasket comprising at least two gasket layers through which at least one through-opening extends.
  • a bead which surrounds the through-opening in a self-contained manner, is provided in at least one of the gasket layers.
  • Metallic flat gaskets of this type are used for example as a gasket in the region of internal combustion engines and exhaust tracts, in particular as exhaust gas manifold gaskets or as cylinder head gaskets.
  • cylinder head gaskets have been proposed in which an additional layer shaped in a spectacle-like manner is present around the combustion chamber opening. This additional layer is often referred to as the “shim”.
  • a shim of this type is a layer which is shortened relative to the remaining gasket layers and, viewed from the combustion chamber openings, often reaches only just beyond the edge of the outer feet of the beads and may eventually reach the water jacket.
  • a drawback of the cylinder head gaskets described hereinbefore is however that their production is comparatively complex and expensive.
  • the shim must be made separately and generally of a different material from the further gasket layers.
  • the additional part increases the complexity of fitting the gasket.
  • the thickness of the shim is derivable from the increase in compression of the gasket for a specific engine. It is often possible to achieve the required increase in compression at relatively low material thicknesses, for example of between 0.05 and 0.15 mm. At a material thickness of less than 0.1 mm, processing of the shim is however highly complex and difficult, as for example during punching, but also during transportation, warpages occur within the metal sheet.
  • the metallic flat gasket according to the invention has at least two metallic gasket layers, namely a first and a second gasket layer.
  • a bead is provided at least in the first gasket layer, said bead surrounding the through-opening in a self-contained manner.
  • the first gasket layer comprising the bead has a smaller surface area than the second gasket layer and leaves free a region adjoining the outer edge of the flat gasket, referred to hereinafter as the edge region.
  • the proportion of the area of this edge region in relation to the total gasket area depends on the individual gasket.
  • the term “edge region” should therefore be understood not exclusively as a narrow edge strip.
  • a compensating portion protruding in the direction of the first gasket layer is present in the second gasket layer in the edge region.
  • the height of this compensating portion is less than the thickness of the first gasket layer.
  • the compensating portion extends at least in certain sections along the outer edge of the first gasket layer and consists of a large number of alternating elevations and depressions which are formed in the second gasket layer.
  • a region is formed around the through-opening, at the location where the first and the second gasket layer are present, in which the material thickness of all gasket layers is greater than in the regions which are more remote from the through-opening and in which the first gasket layer is not present. Accordingly, increased compression is generated in the region of the bead which is provided in the first gasket layer. In contrast to the prior art, this takes place however not by the addition of a shim, but rather by the shortening of the first gasket layer which exposes the edge region of the gasket. In this way the increase in compression can be achieved very much more easily than in the prior art and the bead can be placed very easily into the main loading connection.
  • the mere measure of the shortening of the first gasket layer would however allow only very crude adjustment of the increase in compression in the region of the bead.
  • the increase in compression would be defined in all cases by the thickness of the first gasket layer and be dependent on the commercially available material thicknesses or would necessitate the expensive production of separate material.
  • the first gasket layer must have a certain minimum material thickness. This minimum thickness is however often too great for adjusting the appropriate compression in the region of the bead.
  • a compensating portion is therefore provided in the second gasket layer.
  • the height of this compensating portion can purposefully be set in such a way that the material thickening required for the desired compression is reached in the region of the bead surrounding the through-opening. This is carried out by producing the elevations present in the second gasket layer in the compensating portion at a suitable height.
  • the height of the elevations is in the range between zero and the thickness of the first gasket layer, wherein neither of the two limit values is included in the height range. Particularly preferred are thicknesses in the range of from 30 to 80% of the thickness of the first gasket layer.
  • the height of the elevations can be the same or different throughout the compensating portion.
  • the metallic flat gasket according to the invention has the advantage over conventional gaskets comprising a shim of a greatly simplified design.
  • the additional shim for increasing the compression in the region of the bead can thus be dispensed with entirely. This firstly simplifies the design of the gasket, saves material and facilitates handling during manufacture.
  • the flat gasket according to the invention has in addition very versatile uses, as the desired compression in the region of the bead can be adjusted in a broad range of ways by suitably adapting the material thicknesses of the gasket layers and the height of the compensating portion.
  • the invention can be applied not only to two-layer gaskets, but rather also to gaskets comprising three or more gasket layers.
  • the compensating portion adjoins, radially outside the first gasket layer, the outer edge of the latter.
  • the compensating portion in the second gasket layer is arranged at a distance from the outer edge of the first gasket layer. The distance is in this case at least sufficiently large that the compensating portion does not overlap the first gasket layer even in the state of maximum loading of the flat gasket.
  • the compensating portion in the second gasket layer can be configured in such a way that it completely surrounds the shortened first gasket layer, although this is not absolutely necessary. On the contrary, it may also be sufficient if the compensating portion extends only along one or more partial sections of the outer edge of the first gasket layer. These partial sections are preferably distributed as uniformly as possible around the outer edge of the first gasket layer.
  • the compensating portion is present in the region around a plurality of openings which are provided in the second gasket layer in the edge region thereof.
  • These openings in the edge region of the second gasket layer may in particular be fastening means openings, including in the case of cylinder head gaskets oil or cooling liquid openings.
  • the compensating portion can be configured in such a way that it continuously surrounds a plurality of these openings.
  • the compensating portion is present along at least 35%, preferably at least 50% and in particular at least 70% of the length of the outer edge of the first gasket layer.
  • each of the openings can be surrounded by an annular compensating portion or—in the case of an only partial enclosure—by a ring segment.
  • the openings surrounded by a separate section of the compensating portion are fastening means openings. If the fastening means openings are surrounded by the compensating portion, the compensating portion can serve simultaneously as a support region and as a sealing element for the fastening means opening. This applies especially if the elevations and depressions are configured in an undulating manner in the form of alternating concentric rings.
  • the embodiment of the elevations and depressions in such a way that they form an undulatory structuring is an expedient way of embodying the compensating portion.
  • the elevations and depressions are in this case configured in the form of concentric rings or ring segments.
  • Such structurings of the gasket layer are already known as stoppers for beads which seal an opening in a cylinder head gasket, and are conventionally referred to as wave stoppers. Wave stoppers of this type have previously been described in WO 01/96768 A1 and DE 102004011721 A1 in the name of the applicant. This type of structuring and also the type of manufacture can be used in the described manner for the compensating portion of the present invention. Reference may therefore be made to the content of the aforementioned documents.
  • the elevations and depressions of the compensating portion are arranged on at least one set of virtual straight lines extending substantially parallel over the total extent of the compensating portion.
  • the elevations and depressions alternate in this case transversely to the direction of extension of the lines.
  • a structuring of this type is likewise in principle already known for metallic flat gaskets and has likewise been described by the applicant of the present invention, namely in European patent application 07008321.7.
  • the elevations and depressions are preferably trapezoidal, triangular, rounded or rectangular in cross section.
  • the set of straight lines extending substantially parallel are virtual lines. Although these lines continue over the entire surface area of the compensating portion, elevations or depressions do not necessarily also have to be present at each point of these lines.
  • the virtual lines can intersect the region of an opening or a sealing element in which no elevations and depressions are present. In such a case elevation(s) and/or depression(s) extend on a virtual straight line up to the opening or the sealing element, where they are broken off and then continue again on the opposing side on the same straight line.
  • the set of straight lines extending substantially parallel is in principle drawn over the entire surface area of the compensating portion, whereas the elevations and depressions on these lines are present only in the compensating portions, but not in the gaps thereof.
  • the elevations are in each case separated from one another by depressions.
  • a substantially parallel course of the lines refers in the present document to a departure from parallelism of at most 5° and in particular at most 2°.
  • the elevations and depressions in the compensating portion of the flat gasket according to the invention are produced preferably by embossing. If use is in this case made of two complementary embossment forms, the elevations of which are in each case laterally offset relative to the elevations of the other embossment form and engage with the depressions in the opposing form, there results a compensating portion, the elevations of which protrude beyond both surfaces of the second gasket layer.
  • the material thickening produced by the structuring in the compensating portion therefore affects both surfaces of the second gasket layer.
  • the compensating portion of the second gasket layer can for example be cranked in the direction of the first gasket layer.
  • asymmetrical tool configuration allows the elevations of the compensating portion to protrude only beyond one surface of the second gasket layer.
  • the compensating portion has in its cross section elevations, depressions and a respective region of transition, also referred to as the flank, between adjacent elevations and depressions.
  • the structures are generated preferably by means of embossing.
  • the material in the region of the flank is reduced relative to the material thickness in the region of the elevations and depressions, thus rigidifying the compensating portion.
  • the material tapering in the flank region is in this case at least 8%, preferably at least 10%, particularly preferably at least 13% and in particular at least 15% relative to the material thickness in the region of the adjacent elevation or depression.
  • the elements of the structure may resemble a bead, they have less resiliency than the latter, which is also due to the tapering. Moreover, their width is smaller than the one of a bead. This can for instance be shown with respect to the thickness of the gasket layer.
  • the ratio between the width of a bead (starting from the point where it raises out of the plane) and the thickness of the unstructured gasket layer is at least 6, preferably at least 7. In contrast, the ratio between a period of the structure is at the most 4, preferably between 2.5 and 3.5.
  • the compensating portion can, in addition to the above-mentioned elevations and depressions alternating transversely to the direction of extension of the virtual straight lines, also be configured in such a way that elevations and depressions on mutually adjacent lines are in each case arranged offset relative to one another.
  • Such cases give rise to a chessboard-like structure of elevations and depressions.
  • the depressions extend along at least two intersecting sets of virtual straight lines. Particularly preferred is an arrangement on virtual straight lines which intersect at right angles. In principle, it is also possible for the virtual straight lines to intersect not in the structured region, but rather outside; this produces regions having a differing structuring orientation.
  • the structuring in the compensating portion imparts to the second gasket layer at this location a greater thickness than the thickness of the original gasket layer, i.e. of the planar gasket layer prior to the introduction of the structuring.
  • the height of the compensating portion is measured as the distance between two tangential planes each extending parallel to the plane of the non-deformed gasket layer. The distance is therefore measured between the plane of the untreated gasket layer and a plane resting on the elevations protruding beyond this surface of the gasket layer. In this case the height of the elevations does not have to be uniformly high over the entire compensating portion. Depressions are regions which are lower than the elevations, i.e. not necessarily regions which are sunk into the plane of the undeformed gasket layer.
  • the embossing of the compensating portion allows thickenings to be adjusted variably in a very broad range without the need for additional material.
  • the thickening does not—as stated hereinbefore—have to be configured uniformly over the entire compensating portion, but can rather vary over the surface area of the compensating portion.
  • a topography can therefore be generated in the compensating portion which facilitates purposeful influencing of the compression of the bead in the first gasket layer and allows adaptation to the opposing surfaces to be sealed and the component rigidities thereof.
  • the topography in the compensating portion is selected in such a way that the compression of the bead in the first gasket layer is as uniform as possible.
  • the height of the compensating portion is adjusted in such a way that the elevations protrude beyond the second gasket layer by from 0.02 to 0.3 mm and in particular from 0.05 to 0.20 mm.
  • the height can be set during the manufacture of the elevations from the gasket layer or as a result of the fact that the elevations which are generated are planished, after production thereof, in certain sections or over the entire compensating portion.
  • openings can be present in what is known as the “hinterland” of the gasket—i.e. in the outer edge region.
  • these openings for fastening means, oil and cooling liquid.
  • These openings can in each case be sealed, as is conventional in the prior art, using sealing elements.
  • Use may in this case in principle be made of the sealing elements which are conventional in the prior art, i.e. for example elastomer sealing elements and/or beads which are provided in the second gasket layer.
  • the elastomer can be applied to the gasket layer on one or both sides or molded onto the opening edge.
  • the sealing elements of the “hinterland” can also be configured in a manner known per se as separate regions (so-called inserts) which are inserted into the gasket layer.
  • the compensating portion can be configured in such a way that it—as mentioned hereinbefore—acts itself either as the sealing element for a “hinterland” opening or as the support element for a “hinterland” sealing element. In this case a sufficient distance should however be present between the compensating portion and the “hinterland” sealing element (elastomer or bead) in order not to restrict the elastic sealing element. Suitable distances are for example at least 0.1 mm.
  • the compensating portion can also be beneficial for the compensating portion to maintain a distance from the outer edge of the second gasket layer, for example if a bead or half-bead extends along the outer edge of the second gasket layer. Alternatively, it is however equally possible to guide the compensating portion up to the outer edge of the gasket.
  • the first gasket layer is advantageously only as large as is absolutely necessary. Usually this means that the first gasket layer is extended only so far as is required for the function of the bead which is introduced into the gasket layer. Preferably, the first gasket layer will therefore end as close as possible to the foot of the bead that is remote from the through-opening. In an open-deck engine, the first gasket layer reaches usually at least up to the outer edge of the sealing jacket and in some cases even projects somewhat into the region of the water jacket.
  • the metallic flat gasket according to the invention has in the first gasket layer just a single through-opening which is enclosed by a bead.
  • the first gasket layer is then just annular and in particular circular.
  • the metallic flat gasket will however have a plurality of through-openings which are each surrounded by a bead which is provided in the first gasket layer. It is in this case possible, if there is only a short distance between adjacent through-openings, for the beads to merge in the web region between adjacent through-openings to form a single bead portion.
  • the first gasket layer is preferably configured in a spectacle-like manner, such as is in principle already known in the art, for example for shims (cf. EP 1065417 A2).
  • the metallic flat gasket according to the invention has, in addition to the first gasket layer, just one further layer, namely the second gasket layer, in which the compensating portion is provided.
  • the second gasket layer is a metal sheet which is completely planar—apart from the compensating portion.
  • this sealing element is a bead which is introduced into the second gasket layer and surrounds the through-opening.
  • the bead of the second gasket layer is configured in a similar manner to the bead of the first gasket layer. Both beads can be arranged with their bead apices pointing toward one another or else pointing away from one another. If respective beads for sealing the through-opening are present in the first and the second gasket layer, both gasket layers are preferably made of the same material in order to obtain the same spring constant for the beads in both gasket layers. The use of the same materials for the gasket layers also facilitates manufacture and reduces costs. It is however also possible to use differing materials for both gasket layers and—if the same spring constant is desired for the beads surrounding the through-opening—to adjust this spring constant by shaping the beads or in another manner known per se.
  • the flat gasket according to the invention is not limited to two-layer gaskets; on the contrary, one or more further gasket layers can be present.
  • the second gasket layer is a metal sheet in which merely the compensating portion but no beads are present
  • the additional gasket layer can be configured as an active metal sheet in which, for sealing the through-opening and optionally also for sealing further openings in the “hinterland” of the gasket layer, beads are provided or elastomer sealing elements are present.
  • Flat gaskets comprising four or more gasket layers can also be manufactured, wherein the additional gasket layers can be pure spacer layers without functional elements and in particular without elastically deformable sealing elements or are active layers with elastically deformable sealing elements.
  • the gasket layers can also contain, as is in principle known in the art, deformation limiters for elastic sealing elements in the form of material thickenings (by folding, upsetting, material application, embossing, etc.), although this is not preferred.
  • individual gasket layers or all of the gasket layers of the flat gasket according to the invention can be coated wholly or partly, on one side or on both sides.
  • the coating may be applied after the embossment or the embossment may be introduced into pre-coated, even coil-coated metal sheet.
  • the coatings known per se can be used to improve the microsealing, the sliding friction properties, etc.
  • the structuring of the compensating portion improves the adhesion of the coating in this region.
  • the structuring of the compensating portion in the second gasket layer allows comparatively high layer thicknesses to be achieved.
  • the individual gasket layers of the flat gasket according to the invention can be joined together in a manner conventional in the prior art, for example by riveting, welding (spot-welding, laser-welding, etc.), by clinching, soldering, bonding, clipping-on, etc.
  • the metallic flat gasket according to the invention is suitable for a large number of applications, for example as a flange gasket, exhaust gas manifold gasket other gaskets in the exhaust tract of combustion engines, or the like.
  • the term “flat gasket” expressly includes three-dimensionally deformed gaskets of the type deformed from a two-dimensional body, i.e. for example conical gaskets.
  • the flat gasket according to the invention is particularly suitable as a cylinder head gasket, the through-openings corresponding to the combustion chamber openings.
  • a cylinder head gasket of this type is particularly suitable for engines with cylinder liners and in particular for open-deck engines in which the water openings are open on the upper side of the motor block.
  • the bead which is introduced into the first gasket layer is in this case expediently arranged in such a way that its bead apex is located above the cylinder jacket.
  • the cylinder head gasket is preferably configured in such a way that no deformation limiters for the beads surrounding the combustion chamber openings are present.
  • the gasket is particularly suitable for use in petrol engines. There is obtained a very simply constructed gasket which requires neither a shim nor deformation limiters, but in which sufficient compression which is uniform around the combustion chamber openings can nevertheless be achieved.
  • variations of the gasket comprising deformation limiters for the combustion chamber beads are also possible.
  • the height of the deformation limiters should however be less than the height of the compensating portion, as otherwise the deformation limiters can impair the function of the compensating portion.
  • the deformation limiters can be configured in any manner conventional in the prior art. It is however preferable if they consist—like the compensating portion—of a structuring which is introduced into the gasket layer in the form of alternating elevations and depressions. Expediently, the deformation limiters are generated in the same step as the compensating portion, preferably by embossing.
  • the metallic flat gasket according to the invention can be made of the materials previously conventional for metallic flat gaskets and using the standard production tools.
  • Spring steel is expediently used as the material of those gasket layers in which beads are provided as sealing elements for through-openings.
  • softer steel for example construction steel, can be used.
  • Stainless steels and carbon steels are equally possible.
  • alloys having high thermal stability, in particular of nickel-enriched steels and equivalents is also conceivable.
  • FIG. 1( a ) is a schematic plan view onto a first exemplary embodiment of a metallic flat gasket based on the example of a cylinder head gasket;
  • FIG. 1( b ) is a schematic cross section along the line G-G in FIG. 1( a );
  • FIG. 2 is a schematic plan view onto a further example of a metallic cylinder head gasket including four details;
  • FIGS. 3( a ) to 3 ( d ) are schematic plan views onto the individual layers of a two-layer cylinder head gasket according to the invention along with plan views onto the opposing surfaces to be sealed, specifically:
  • FIG. 3( a ) is a schematic plan view onto the motor block surface
  • FIG. 3( b ) is a schematic plan view onto the surface of the cylinder head
  • FIG. 3( c ) is a schematic plan view onto the second gasket layer of the flat gasket according to the invention.
  • FIG. 3( d ) is a schematic plan view onto the first gasket layer of the cylinder head gasket according to the invention.
  • FIGS. 4 to 7 show schematically further exemplary embodiments of metallic flat gaskets according to the invention in partial cross sections in a region around a through-opening;
  • FIG. 8( a ) is a schematic plan view onto a further example of a metallic flat gasket according to the invention based on the example of a flange gasket;
  • FIG. 8( b ) is a schematic cross section along the line A-A in FIG. 8( a );
  • FIGS. 9( a ) to 9 ( f ) are various schematic partial cross-sectional views of different embodiments of two-layer metallic flat gaskets in the region between a through-opening and a screw opening;
  • FIG. 9( g ) a schematic partial cross-sectional view of a two-layer metallic flat gasket in the region between a through-opening and an area in the backland of the gasket;
  • FIG. 10 is a schematic partial cross section through a compensating portion, provided with elevations and depressions, of a metallic flat gasket according to the invention.
  • FIG. 1( a ) shows a metallic flat gasket 1 based on the example of a cylinder head gasket in a plan view onto the second gasket layer 3 thereof, which extends substantially over the entire surface of the opposing surfaces to be sealed (i.e. of a motor block and a cylinder head).
  • the second gasket layer 3 is made for example of spring steel.
  • Formed therein are various through-openings, namely inside the gasket layer four through-openings 4 which are arranged next to one another and correspond to the combustion chamber openings.
  • further openings 8 are present in the second gasket layer 3 toward the edge 5 of the gasket 1 .
  • these are screw openings 80 , oil openings 81 and openings 82 for cooling liquid, in particular water.
  • the through-openings 4 are each surrounded by a bead 30 enclosing said through-openings.
  • the course of the beads 30 is in this case specified by two respective lines which illustrate the position of the feet 301 and 302 of the bead.
  • the cross-sectional shape of the beads 30 may in principle be of any desired shape.
  • the beads 30 have a trapezoidal cross section. Beads having a rounded cross section can however also be used.
  • the oil openings 81 in the edge region 6 of the second gasket layer 3 are likewise surrounded by an elastically deformable sealing element 9 .
  • This may also be a bead which is introduced into the gasket layer.
  • the sealing element used may be an elastomer lip.
  • first gasket layer 2 For sealing the through-openings 4 , further beads 20 are present in a first gasket layer 2 .
  • the first gasket layer 2 can not be seen in the plan view of FIG. 1( a ), as it is arranged below the second gasket layer 3 . This may be seen in FIG. 1( b ). It may also be seen that the first gasket layer 2 extends much less far than the second gasket layer 3 .
  • the illustration also with regard to the upper side or underside of the gasket, is merely schematic by nature.
  • the upper side which is shown at the top of the present figure, can in a cylinder head gasket be either the side facing the cylinder head or else the side facing the motor block.
  • the first gasket layer 2 is configured in a spectacle-like manner and extends exclusively in the immediate vicinity around the through-openings 4 . Its width is in this case only approximately three times as great as the distance between the feet 201 and 202 of the bead 20 .
  • the shape and course of the beads 20 correspond fully to those of the beads 30 of the second gasket layer 3 .
  • the beads 20 and 30 are therefore configured mirror-symmetrically with respect to one another and rest against one another with their bead apices.
  • the material of which the first gasket layer 2 is made also corresponds to that of the second gasket layer 3 . As a result, the beads 20 and 30 have the same spring characteristic.
  • the first gasket layer 2 fully exposes the edge region 6 of the second gasket layer 3 . Accordingly, the first gasket layer 2 also contains exclusively through-openings 4 , but otherwise no further through-openings. In the edge region 6 , the flat gasket 1 according to the invention consists exclusively of the second gasket layer 3 . On account of this design, a greater material thickness is achieved in the region around the through-openings 4 than in the edge region 6 , where the first gasket layer 2 is not present. As a result, the compression in the region around the through-openings 4 increases, thus allowing improved sealing of the combustion chamber openings to be achieved at this location.
  • the beads 20 and 30 are in main loading connection.
  • a compensating portion 7 is provided in the edge region 6 of the second gasket layer 3 . This compensating portion 7 protrudes by a height H beyond the surface 33 of the second gasket layer 3 in the direction of the first gasket layer 2 .
  • the height H is in this case less than the thickness d of the first gasket layer 2 , so overall a thickening is maintained in the region around the combustion chamber openings 4 .
  • Appropriate selection of the height H of the compensating portion 7 allows the desired increase in compression to be purposefully adjusted in the region around the combustion chamber openings. Specifically, this takes place as a result of the fact that in the compensating portion 7 , which is formed from alternating elevations 31 and depressions 32 , the elevations 31 are generated at a specific height.
  • the height H of the compensating portion 7 is for example from 0.1 to 0.18 mm, in particular 0.15 mm.
  • the compensating portion 7 consists of a plurality of sections 70 which each surround a screw opening 80 .
  • the individual sections 70 of the compensating portion 7 consist of an undulatory structuring of the second gasket layer 3 .
  • the elevations 31 and depressions 32 extend in the form of alternating concentric rings.
  • the elevations and depressions are configured merely as concentric ring segments.
  • the elevations 31 and depressions 32 of the individual sections 70 can serve at the same time as sealing and support elements for the screw openings 80 .
  • the uniform distribution of the screw openings 80 , and thus also of the sections 70 of the compensating portion 7 , around the combustion chamber openings 4 ensures uniform adjustment of the compression in the region around the combustion chamber openings 4 .
  • the compensating portion 7 maintains a sufficient distance from the edge 21 of the first gasket layer 2 , so the compensating portion does not impair the function of the beads of the first gasket layer either. The working of the beads 20 is not disturbed by the compensating portion 7 .
  • FIG. 2 is a plan view onto a second gasket layer 3 of another exemplary embodiment of a metallic cylinder head gasket. Apart from the configuration of the compensating portion 7 , this gasket corresponds entirely to that shown in FIGS. 1( a ) and 1 ( b ).
  • the first gasket layer 2 is, again, arranged below the second gasket layer 3 and corresponds to that shown in FIG. 1( b ).
  • the compensating portion 7 is configured continuously. It substantially continuously surrounds the through-openings 4 at a distance therefrom and is broken off merely in the left-hand bottom corner of the second gasket layer 3 . At this location there is, again, a lowered region 35 .
  • the compensating portion 7 is present merely in a relatively narrow strip on the second gasket layer 3 and ends before the half-bead 34 , from which the compensating portion maintains a distance.
  • the elevations of the compensating portion 7 are not configured in the form of concentric rings as described in the preceding figures; instead, the elevations 31 and depressions 32 are in this case for example in the form of elevations and depressions which are arranged alternately on straight lines. These straight lines are virtual lines extending over the entire compensating portion in a parallel arrangement. These virtual lines intersect in this case also the through-openings 4 and the beads 30 surrounding said through-openings. The elevations and depressions are in this case however present only in the hatched regions. Overall, there is thus obtained a linear arrangement of the elevations and depressions in the compensating portion 7 , such as is also illustrated in details A and C.
  • the structuring can extend parallel to the direction of extension of the elevations and depressions of the remaining regions or else at an angle thereto.
  • the height by which the elevations protrude beyond the surface 33 of the second gasket layer in the direction of the first gasket layer 2 can, again, be set so as to correspond to the desired compression. In this case it is possible to vary the height of the elevations in the compensating portion. In this way the gasket can be adapted to the rigidities of the components to be sealed and the compression around the through-openings 4 can be made uniform. Obviously, it is likewise possible, should this be desirable, to set a non-uniform distribution of compression in the region around a through-opening 4 or from one through-opening to another through-opening 4 .
  • the structuring it is also possible for the structuring to be configured in such a way that, for example, two sets of parallel virtual lines intersect, thus producing, at the same distances, a chessboard pattern of elevations and depressions. This possibility is indicated in details B and D.
  • FIGS. 3( a ) to 3 ( d ) illustrate the arrangement of a metallic flat gasket according to the invention based on the example of a two-layer cylinder head gasket in the sealing gap between a motor block and a cylinder head.
  • the motor block illustrated in FIG. 3( a ) is of an open-deck design.
  • the motor block is made for example of cast iron or an aluminum alloy.
  • the four cylinder bores 4 ′ are surrounded by a water jacket 82 ′.
  • the water jacket 82 ′ is upwardly open in the plane of the surface B 1 to be sealed.
  • various screw openings 80 ′ and also oil openings 81 ′ are present in the motor block B.
  • the cylinder head K pertaining to the motor block B is illustrated in FIG. 3( b ). Cylinder bores 4 ′′, screw openings 80 ′′, oil openings 81 ′′ and water openings 82 ′′ are present in the cylinder head K, corresponding to the position of the openings in the motor block B.
  • the cylinder head gasket according to the invention is inserted between the motor block and cylinder head.
  • the cylinder head gasket is a two-layer cylinder head gasket comprising a first gasket layer 2 ( FIG. 3( d )) and a second gasket layer 3 .
  • the second gasket layer is shown in FIG. 3( c ) and is for example arranged in such a way that the surface of the gasket layer that points away from the viewer comes to rest against the surface K 1 of the cylinder head K.
  • the configuration of the second gasket layer 3 corresponds substantially to that in FIG. 2 .
  • the surface of the gasket layer 3 is provided with a coating 11 .
  • This coating reaches from the inner edge of the compensating portion 7 beyond the half-bead 34 partly up to the edge 5 of the gasket. It also covers the left-hand narrow-side edge portion of the gasket layer 3 .
  • the coating 11 can for example be applied using a screen printing process and is made preferably of plastics material, for example rubbers or fluoropolymers. A coating of this type allows the microsealing and the sliding friction properties of the gasket to be improved.
  • the presence of the compensating portion 7 with its surface area enlarged by the elevations and depressions, allows the coating 11 to be applied at a greater thickness than onto an unstructured region.
  • the structuring improves the adhesion of the coating 11 on the metallic gasket layer 3 .
  • the coating 11 is present also on the opposing second surface 33 , which cannot be seen in FIG. 3( c ), of the gasket layer 3 .
  • the first gasket layer 2 is configured in a spectacle-like manner and has four combustion chamber openings 4 which are each surrounded by a bead 20 , as may be seen from FIG. 3( d ).
  • the beads 20 merge in the web region 203 to form a common bead portion, such as was previously described in relation to FIG. 1( a ).
  • the first gasket layer has no further through-openings.
  • the first gasket layer 2 is fastened to the second gasket layer 3 even before the cylinder head gasket has been fitted, for example by spot-welding.
  • the first gasket layer 2 is arranged above the second gasket layer 3 in such a way that the through-openings 4 are positioned in each case precisely one above another and the beads 20 and 30 rest against one another with their apices.
  • the cylinder head gasket comprising the first and second gasket layers is subsequently fastened to the motor block B in such a way that the first gasket layer 2 rests on the surface B 1 of the motor block.
  • the through-openings 4 in the cylinder head gasket and the cylinder bores 4 ′ are positioned precisely one above another.
  • the first gasket layer 2 rests in this case on the cylinder jackets B 2 of the motor block B.
  • the second gasket layer 3 reaches beyond the cooling water opening 82 ′ and covers the surface B 1 of the motor block B substantially completely.
  • the inner edge of the compensating portion 7 reaches right up to the outer edge 820 ′ of the water jacket 82 ′.
  • the assembly is concluded by positioning the cylinder head K above the second gasket layer 3 and is secured to the motor block by means of screws which are guided through the screw openings 80 ′′, 80 and 80 ′.
  • FIGS. 4 to 7 are partial cross sections through further exemplary embodiments of metallic flat gaskets according to the invention. These can be various types of flat gasket, including flange or manifolds gaskets.
  • the cross sections will however be described based on the example of cylinder head gaskets. Shown in each case is a cross section between a combustion chamber opening 4 and an opening 8 in the edge region 6 of the gasket.
  • the opening 8 can for example be a screw opening.
  • FIG. 4 is a cross section of a cylinder head gasket similar to that illustrated in FIG. 1 b.
  • two beads 20 and 30 which are arranged mirror-symmetrically with respect to one another, have a trapezoidal cross section and the apices of which rest on one another.
  • the edge portion adjoining the outer foot of the bead is shortened compared to the first gasket layer of the gasket illustrated in FIG. 1 .
  • the compensating portion 7 adjoins at a relatively short distance the outer foot 301 of the bead 30 in the second gasket layer 3 . It consists of elevations 31 and depressions 32 arranged in alternation on virtual parallel lines.
  • the compensating portion 7 is adjoined by a half-bead 34 which can serve, as in FIGS. 1 and 2 , to seal the water openings.
  • a sealing element nor a compensating portion is present in the region around the opening 8 .
  • FIG. 5 shows a further example of a two-layer cylinder head gasket in which merely in the first gasket layer 2 a bead 20 is provided for sealing the combustion chamber opening 4 .
  • the second gasket layer 3 is, on the other hand, entirely without beads and planar in the detail shown, apart from the compensating portion 7 .
  • elastically deformable sealing elements which can consist, for example, of elastomer sealing lips applied to the gasket layer or molded onto the edges of the opening.
  • FIG. 6 is a cross section through a further example of a two-layer cylinder head gasket.
  • the orientation of the first gasket layer 2 and second gasket layer 3 relative to one another is different from the preceding examples.
  • the apices of the beads 20 and 30 point away from one another, so in this case the respective feet of the beads come to rest on one another.
  • the first gasket layer 2 is arranged above the second gasket layer.
  • the first gasket layer 2 is oriented in the direction of the cylinder head K, whereas the second gasket layer 3 rests on an motor block B. A non-compressed state of said components is shown.
  • a structuring is present, preferably in the form of rings extending concentrically with one another (cf. FIG. 1 ) or of elevations and depressions extending parallel to one another, the illustrated gasket in the edge region otherwise does not differ from that of FIG. 4 .
  • FIG. 7 is a partial cross section through a three-layer cylinder head gasket.
  • the first, shortened gasket layer 2 corresponds basically to that shown in FIG. 4 , although it is in this case provided as the gasket layer oriented on top (for example toward the cylinder head).
  • the second gasket layer 3 is in this case a smooth metal sheet, as it contains no beads.
  • a gasket layer of this type without active sealing elements is conventionally referred to as a spacer sheet.
  • a compensating portion 7 is provided in the second gasket layer 3 which extends so as to adjoin the outer edge 21 of the first gasket layer.
  • the structuring of the compensating portion 7 can, again, be elevations and depressions arranged on parallel virtual lines.
  • FIG. 8 illustrates in partial images 8 ( a ) and 8 ( b ) the application of the solution according to the invention based on the example of a flange gasket with a single through-opening 4 for, for example, exhaust gases or liquids.
  • the flange gasket 1 For fastening to the components to be sealed, the flange gasket 1 according to the invention has two fastening openings 80 .
  • the first gasket layer 2 comprising the bead 20 extends over a highly limited, roughly circular region in immediate proximity to the through-opening 4 .
  • the compensating portion in the form of a structuring 7 is present in the region of the fastening means openings 80 .
  • the layer 3 which, again, has a bead 30 which is arranged mirror-symmetrically with respect to the bead 20 .
  • FIGS. 9( a ) to 9 ( f ) are partial cross sections through further exemplary embodiments of two-layer metallic flat gaskets.
  • the cross sections shown can be used also for other types of flat gaskets, but will be described in greater detail for cylinder head gaskets. Shown is the region between a through-opening 4 and an opening 8 , in particular a fastening means opening. In the region of the openings 8 the cylinder head gaskets can be configured like those of FIG. 1( a ). Portions of the compensating portion 7 are therefore each present around the individual openings 8 .
  • the individual gaskets each differ in terms of the configuration of the regions around the through-openings 4 . In contrast to the above-described gaskets, the gaskets of FIG.
  • deformation limiters 12 for the beads 20 and 30 which are intended to prevent complete flattening of the beads during operation.
  • the deformation limiters 12 consist in each case in a structuring which can be configured similarly to, but is less tall than, that of the compensating portion 7 .
  • the deformation limiters 12 for the beads 20 and 30 are manufactured preferably by embossing and consist likewise of alternating elevations and depressions in the respective gasket layer 2 or 3 .
  • the deformation limiters 12 are generated in the same operation as the compensating portion 7 .
  • a deformation limiter 12 is present at the combustion chamber-side edge of the second gasket layer 3 .
  • a second deformation limiter 12 ′ is arranged on the side of the bead 30 that is remote from the combustion chamber opening 4 .
  • a deformation limiter 12 ′ is provided in the first gasket layer 2 on the combustion chamber side thereof, whereas in the gasket according to FIG. 9( d ) a further deformation limiter 12 is additionally present in the first gasket layer on the side of the bead 20 that is remote from the combustion chamber.
  • a respective deformation limiter 12 is provided on the side of the beads that is remote from the combustion chamber, in the gasket according to FIG. 9( e ) in the second gasket layer 3 and in FIG. 9( f ) in the first gasket layer 2 .
  • FIG. 9( g ) demonstrates that the second gasket layer 3 can have not just a bead, but rather also a surface structuring comprising elevations 31 ′ and depressions 32 ′, the structured region being arranged in such a way that it does not overlap the structured region of the first gasket layer 2 .
  • the latter is structured on both sides of the bead 20 .
  • the figure is not taken between the combustion chamber through opening 4 and a bolt hole 8 but from the combustion chamber through opening 4 to an area in the backland of the gasket layer which is free from bolt holes.
  • the structuring 7 in the backland is arranged in such a way that it continues on the other side of a half bead 34 .
  • the elevations 31 and depressions 32 of the compensating portion and, if present, also the deformation limiter 12 are produced preferably by embossing.
  • the embossing step is carried out preferably using an embossing tool having two complementary embossment forms. These embossment forms expediently each have embossment projections which engage with corresponding depressions in the complementary embossment form. Elevations and depressions of one embossment form are therefore arranged offset relative to the elevations and depressions of the complementary embossment form.
  • this tool constellation results in a particular distribution of material thickness in the region of the machined gasket layer that is structured with the embossment form. This will be illustrated schematically with reference to FIG. 10 .
  • FIG. 10 shows a detail from a second gasket layer in a compensating portion 7 .
  • Elevations 31 and depressions 32 are embossed into this region.
  • the elevations 31 protrude by a height H beyond the surface O of the gasket layer 3 .
  • the thickness of the gasket layer 3 in the region of the flanks 36 has been reduced relative to the thickness of the elevations 31 or depressions 32 .
  • the thickness D 36 in the flank region is therefore less than the thickness D 31 of the gasket layer 3 in the region of the elevations or depressions. This reshaping of the material and reduction of the material thickness lead to an increase in the rigidity of the structured region.
  • the extent of the flank tapering is exaggerated in FIG. 10 .
  • FIG. 10 also indicates that a period of the structuring, P, is usually about 2.5 to 3.5 times larger than the original thickness of the gasket layer, H.
  • the ratio P/H in general does not exceed 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gasket Seals (AREA)
US12/450,972 2007-04-24 2008-04-24 Metallic flat gasket Abandoned US20100176558A1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
EP07008321A EP1985896B1 (de) 2007-04-24 2007-04-24 Metallische Flachdichtung
EP07008321.7 2007-04-24
EP07020452A EP1985897A1 (de) 2007-04-24 2007-10-18 Metallische Flachdichtung
EP07020452.4 2007-10-18
PCT/EP2008/003329 WO2008128787A1 (en) 2007-04-24 2008-04-24 Metallic flat gasket

Publications (1)

Publication Number Publication Date
US20100176558A1 true US20100176558A1 (en) 2010-07-15

Family

ID=38556340

Family Applications (3)

Application Number Title Priority Date Filing Date
US12/450,972 Abandoned US20100176558A1 (en) 2007-04-24 2008-04-24 Metallic flat gasket
US12/450,974 Active 2028-12-27 US8336889B2 (en) 2007-04-24 2008-04-24 Metallic flat gasket
US12/451,016 Abandoned US20100109255A1 (en) 2007-04-24 2008-04-24 Metallic flat gasket

Family Applications After (2)

Application Number Title Priority Date Filing Date
US12/450,974 Active 2028-12-27 US8336889B2 (en) 2007-04-24 2008-04-24 Metallic flat gasket
US12/451,016 Abandoned US20100109255A1 (en) 2007-04-24 2008-04-24 Metallic flat gasket

Country Status (7)

Country Link
US (3) US20100176558A1 (ja)
EP (4) EP1985896B1 (ja)
JP (1) JP2010525271A (ja)
BR (2) BRPI0811042A2 (ja)
CA (3) CA2683849A1 (ja)
MX (3) MX2009011466A (ja)
WO (3) WO2008128788A1 (ja)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100109255A1 (en) * 2007-04-24 2010-05-06 Reinzdichtungs-Gmbh Metallic flat gasket
US20120098210A1 (en) * 2009-06-25 2012-04-26 Klaus Schmitt Flat seal having a solid bead
US20130087980A1 (en) * 2011-10-06 2013-04-11 Federal-Mogul Corporation Multilayergasket with segmented integral stopper feature
US20130241157A1 (en) * 2012-03-13 2013-09-19 Manufactura Moderna De Metales S.A. Screw-bearing gasket
US9446637B2 (en) 2012-04-09 2016-09-20 Dana Heavy Vehicle Systems Group, Llc Tire inflation system
US10059156B2 (en) 2012-04-09 2018-08-28 Dana Heavy Vehicle Systems Group, Llc Hub assembly for a tire inflation system

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008038353A1 (fr) * 2006-09-27 2008-04-03 Daiki Industries, Co., Ltd. Joint d'étanchéité
US8632077B2 (en) * 2008-02-13 2014-01-21 Federal-Mogul Corporation Multilayer static gasket with bead compression limiter
DE202008014927U1 (de) 2008-11-11 2009-01-15 Reinz-Dichtungs-Gmbh Metallische Dichtung für Hochtemperaturanwendungen
DE102008061684B4 (de) * 2008-12-11 2014-12-04 Acs Coating Systems Gmbh Flaches elastisch verformbares Element
JP5344222B2 (ja) * 2008-12-26 2013-11-20 日本ガスケット株式会社 シリンダヘッドガスケットにおけるオイル落し穴のシール構造
DE202009002162U1 (de) 2009-02-14 2009-06-18 Reinz-Dichtungs-Gmbh Metallische Flachdichtung
DE102009009169B4 (de) * 2009-02-16 2011-12-01 Federal-Mogul Sealing Systems Gmbh Flachdichtung mit wellenförmigem Stopper
US8336888B2 (en) * 2009-10-22 2012-12-25 Dana Automotive Systems Group, Llc Gasket with engine liner accomodation
US8678363B2 (en) * 2010-09-16 2014-03-25 Christopher E. Baker Multiple vise system
DE102010049958B4 (de) * 2010-10-28 2012-07-12 Reinz-Dichtungs-Gmbh Mehrlagige Dichtung und deren Verwendung
US20120175847A1 (en) * 2011-01-12 2012-07-12 Popielas Frank W Support wave stopper in web area of multi-layered steel cylinder head gasket
US8814171B2 (en) 2011-10-25 2014-08-26 Ford Global Technologies, Llc Engine sealing assembly
CN103946531B (zh) * 2011-12-01 2017-10-03 博格华纳公司 金属珠缘衬垫
JP2014113866A (ja) * 2012-12-07 2014-06-26 Nec Commun Syst Ltd 状態監視システム、状態監視方法、状態検知装置、および状態検知プログラム
US9939066B2 (en) * 2013-03-14 2018-04-10 Federal-Mogul Llc Elastic sealing member radially inwardly of primary sealing bead
DE102013104068A1 (de) * 2013-04-22 2014-10-23 Elringklinger Ag Flachdichtung
US10422430B2 (en) * 2014-12-19 2019-09-24 Tenneco Inc. Multilayer static gasket, distance layer with improved stopper region therefor, and method of construction thereof
EP3239563B1 (en) * 2014-12-22 2022-03-16 NOK Corporation Metal gasket
US9664284B2 (en) * 2015-08-05 2017-05-30 General Electric Company Cover system with gasket system therefor
CN105351110A (zh) * 2015-12-04 2016-02-24 广西玉柴机器股份有限公司 气缸盖垫片
WO2020055630A1 (en) * 2018-09-10 2020-03-19 Dana Automotive Systems Group, Llc Gasket with a high durability coating and method for creating the same
US11585441B2 (en) * 2020-11-20 2023-02-21 Dana Automotive Systems Group, Llc Laser profiled gasket and method for manufacturing said gasket

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4728110A (en) * 1986-01-13 1988-03-01 Ishikawa Gasket Co., Ltd. Laminate type manifold gasket
US4834399A (en) * 1986-11-10 1989-05-30 Ishikawa Gasket Co., Ltd. Steel laminate gasket
US4867462A (en) * 1988-05-16 1989-09-19 Ishikawa Gasket Co., Ltd. Steel laminate gasket with separate beads
US5232229A (en) * 1990-08-07 1993-08-03 Ishikawa Gasket Co., Ltd. Metal gasket with low heat transmission
US6431554B1 (en) * 1999-06-30 2002-08-13 Nippon Gasket Co., Ltd. Metal gaskets
US6779800B2 (en) * 2001-07-19 2004-08-24 Ishikawa Gasket Co., Ltd. Head gasket
US6918597B2 (en) * 2000-06-15 2005-07-19 Reinz-Dichtungs-Gmbh & Co. Kg. Gasket
US7000924B2 (en) * 2000-06-15 2006-02-21 Dana Corporation Flat gasket and method for the production thereof
US20060175763A1 (en) * 2003-02-28 2006-08-10 Uwe Duckek Cylinder head gasket
US20070210532A1 (en) * 2006-03-09 2007-09-13 Elringklinger Ag Flat gasket, in particular, cylinder head gasket
US20090066036A1 (en) * 2007-09-11 2009-03-12 Joerg Schmitz Metallic cylinder head gasket
US8128099B2 (en) * 2005-11-14 2012-03-06 Dana Automotive Systems Group, Llc Gasket
US20120153576A1 (en) * 2009-03-05 2012-06-21 Rolf Prehn Flat seal

Family Cites Families (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US843394A (en) * 1906-03-26 1907-02-05 William B Haynes Gasket
US1782087A (en) 1926-05-07 1930-11-18 Mccord Radiator & Mfg Co Gasket
US3314684A (en) * 1964-08-31 1967-04-18 Ajem Lab Inc Sealing surfaces and methods of preparing same
DE2118610A1 (de) * 1971-04-16 1972-10-19 Corrugated Packing Sheet Metal Dichtungen
FR2158684A5 (ja) * 1971-10-28 1973-06-15 Semt
US3794333A (en) * 1972-07-20 1974-02-26 Felt Products Mfg Co Gasket
JPS51126860U (ja) * 1975-04-07 1976-10-14
GB2064677B (en) * 1979-12-03 1983-05-11 Nicholson T P Gaskets
WO1995022020A1 (de) * 1994-02-12 1995-08-17 Friedhelm Stecher Metallische flachdichtung mit örtlich einstellbarer verformbarkeit
US5642893A (en) * 1996-01-11 1997-07-01 Ishikawa Gasket Co., Ltd. Metal laminate gasket with coating flow preventing dents
JP4208997B2 (ja) * 1998-07-14 2009-01-14 日本メタルガスケット株式会社 金属ガスケット
DE10009902A1 (de) * 2000-03-01 2001-09-27 Elringklinger Ag Zylinderkopfdichtung
JP4090027B2 (ja) 2002-10-22 2008-05-28 日本ラインツ株式会社 メタルガスケット用ビード板及びその製造方法
JP3769549B2 (ja) * 2003-03-26 2006-04-26 石川ガスケット株式会社 メタルガスケット
DE10313534A1 (de) * 2003-03-26 2004-10-14 Federal-Mogul Sealing Systems Gmbh Flachdichtung, insbesondere Zylinderkopfdichtung für Brennkraftmaschinen
JP2005114053A (ja) * 2003-10-08 2005-04-28 Ishikawa Gasket Co Ltd 金属ガスケット
DE102005003017B4 (de) * 2004-01-23 2019-10-24 Koichi Hatamura Metalldichtung
DE102004011721A1 (de) 2004-03-10 2005-10-06 Reinz-Dichtungs-Gmbh Metallische Zylinderkopfdichtung und deren Verwendung
DE102004012905A1 (de) 2004-03-17 2005-10-13 Elringklinger Ag Zylinderkopfdichtung
DE102004033906A1 (de) * 2004-07-14 2006-02-09 Elring Klinger Ag Zylinderkopfdichtung
DE102004040516A1 (de) 2004-08-20 2006-02-23 Reinz-Dichtungs-Gmbh Metallische Flachdichtung mit verkürzter Dichtungslage
DE102004044851A1 (de) 2004-09-10 2006-03-16 Elringklinger Ag Zylinderkopfdichtung
FR2875570B1 (fr) * 2004-09-21 2007-02-16 Meillor Sa Sa Joint comprenant au moins une nervure incorporant un limiteur d'ecrasement
US20060191603A1 (en) * 2005-02-25 2006-08-31 Popielas Frank W Lower strength material for MLS active layers
DE102005025942A1 (de) * 2005-06-06 2006-12-07 Reinz-Dichtungs-Gmbh Flachdichtung
US7287757B2 (en) * 2005-06-28 2007-10-30 Dana Corporation Optimized wave bead with full bead design
JP2007139177A (ja) * 2005-10-20 2007-06-07 Japan Metal Gasket Co Ltd ガスケット
EP1985896B1 (de) * 2007-04-24 2012-12-12 REINZ-Dichtungs-GmbH Metallische Flachdichtung
DE102006034784A1 (de) * 2006-07-27 2008-01-31 Reinz-Dichtungs-Gmbh Mehrlagige metallische Flachdichtung, insbesondere Zylinderkopfdichtung
US20080237998A1 (en) * 2007-04-02 2008-10-02 Chingo-Ho Chen Gasket with high recovery half bead and wave stopper
JP4794643B2 (ja) * 2009-03-03 2011-10-19 石川ガスケット株式会社 金属積層形ガスケット

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4728110A (en) * 1986-01-13 1988-03-01 Ishikawa Gasket Co., Ltd. Laminate type manifold gasket
US4834399A (en) * 1986-11-10 1989-05-30 Ishikawa Gasket Co., Ltd. Steel laminate gasket
US4867462A (en) * 1988-05-16 1989-09-19 Ishikawa Gasket Co., Ltd. Steel laminate gasket with separate beads
US5232229A (en) * 1990-08-07 1993-08-03 Ishikawa Gasket Co., Ltd. Metal gasket with low heat transmission
US5306024A (en) * 1990-08-07 1994-04-26 Ishikawa Gasket Co., Ltd. Metal gasket with low heat transmission
US6431554B1 (en) * 1999-06-30 2002-08-13 Nippon Gasket Co., Ltd. Metal gaskets
US7000924B2 (en) * 2000-06-15 2006-02-21 Dana Corporation Flat gasket and method for the production thereof
US6918597B2 (en) * 2000-06-15 2005-07-19 Reinz-Dichtungs-Gmbh & Co. Kg. Gasket
US20060097459A1 (en) * 2000-06-15 2006-05-11 Dana Corporation Flat gasket and method for the production thereof
US20090166985A1 (en) * 2000-06-15 2009-07-02 Kurt Hohe Flat gasket and method for the production thereof
US8162326B2 (en) * 2000-06-15 2012-04-24 Dana Automotive Systems Group, Llc Flat gasket and method for the production thereof
US6779800B2 (en) * 2001-07-19 2004-08-24 Ishikawa Gasket Co., Ltd. Head gasket
US20060175763A1 (en) * 2003-02-28 2006-08-10 Uwe Duckek Cylinder head gasket
US8128099B2 (en) * 2005-11-14 2012-03-06 Dana Automotive Systems Group, Llc Gasket
US20070210532A1 (en) * 2006-03-09 2007-09-13 Elringklinger Ag Flat gasket, in particular, cylinder head gasket
US20090066036A1 (en) * 2007-09-11 2009-03-12 Joerg Schmitz Metallic cylinder head gasket
US20120153576A1 (en) * 2009-03-05 2012-06-21 Rolf Prehn Flat seal

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100109255A1 (en) * 2007-04-24 2010-05-06 Reinzdichtungs-Gmbh Metallic flat gasket
US20120098210A1 (en) * 2009-06-25 2012-04-26 Klaus Schmitt Flat seal having a solid bead
US9822879B2 (en) * 2009-06-25 2017-11-21 Federal-Mogul Sealing Systems Flat seal having a solid bead
US20130087980A1 (en) * 2011-10-06 2013-04-11 Federal-Mogul Corporation Multilayergasket with segmented integral stopper feature
US8616557B2 (en) * 2011-10-06 2013-12-31 Federal-Mogul Corporation Multilayer gasket with segmented integral stopper feature
US20130241157A1 (en) * 2012-03-13 2013-09-19 Manufactura Moderna De Metales S.A. Screw-bearing gasket
US9446637B2 (en) 2012-04-09 2016-09-20 Dana Heavy Vehicle Systems Group, Llc Tire inflation system
US9592708B2 (en) 2012-04-09 2017-03-14 Dana Heavy Vehicle Systems Group, Llc Tire inflation system
US10059156B2 (en) 2012-04-09 2018-08-28 Dana Heavy Vehicle Systems Group, Llc Hub assembly for a tire inflation system

Also Published As

Publication number Publication date
CA2683849A1 (en) 2008-10-30
MX2009011463A (es) 2009-11-10
CA2682706A1 (en) 2008-10-30
EP1985896B1 (de) 2012-12-12
BRPI0811041B1 (pt) 2019-11-05
EP1985898A1 (de) 2008-10-29
BRPI0811041A2 (pt) 2014-10-21
WO2008128790A1 (en) 2008-10-30
US20100164185A1 (en) 2010-07-01
MX2009011464A (es) 2009-11-10
EP1985897A1 (de) 2008-10-29
JP2010525271A (ja) 2010-07-22
BRPI0811042A2 (pt) 2014-10-21
WO2008128788A1 (en) 2008-10-30
CA2682759A1 (en) 2008-10-30
EP1985896A1 (de) 2008-10-29
US8336889B2 (en) 2012-12-25
MX2009011466A (es) 2009-11-10
EP2149000A1 (en) 2010-02-03
US20100109255A1 (en) 2010-05-06
WO2008128787A1 (en) 2008-10-30

Similar Documents

Publication Publication Date Title
US20100176558A1 (en) Metallic flat gasket
US7204491B2 (en) Metal gasket
US20100109256A1 (en) Metallic flat gasket
KR101118396B1 (ko) 실린더 헤드 가스켓의 다층 금속 평탄 가스켓
US20090072493A1 (en) Gasket
US8042815B2 (en) Cylinder head gasket and engine
JP2006090549A (ja) 圧縮制限部材が組み込まれている少なくとも１つのリブを含むガスケット
US5544901A (en) Metal gasket for chain case-carrying engines
JP2005337505A (ja) シリンダヘッド・ガスケット
US20080143060A1 (en) Multi-layer gasket
JP2011525227A (ja) 平形ガスケット
JP2004360913A (ja) シリンダヘッドガスケット
JP4090027B2 (ja) メタルガスケット用ビード板及びその製造方法
US20060163820A1 (en) Metal gasket
US20120112420A1 (en) Gasket having a wave stopper
US11054034B2 (en) Flat gasket and internal combustion engine having such a flat gasket
US20060261561A1 (en) Flat gasket, in particular cylinder-head gasket
US7014194B2 (en) Cylinder head gasket
US20110298186A1 (en) Gaskets having additional sealing element
US20180266559A1 (en) Flat gasket and sealing assembly containing a flat gasket
EP1561975A1 (en) Cylinder head gasket
JP2001295933A (ja) 金属ガスケット
JP2007239888A (ja) シリンダヘッドガスケット
JP2003028301A (ja) 金属ガスケット

Legal Events

Date Code Title Description
STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION