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
  • F16J15/0887—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing the sealing effect being obtained by elastic deformation of the packing
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
  • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
  • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
  • F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
  • F01N13/1827—Sealings specially adapted for exhaust systems
• • 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
  • F16J15/061—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with positioning means

Definitions

• the invention relates to a sealing arrangement, in particular for line connections on the exhaust gas line of an internal combustion engine, with a seal carrier and at least one sealing element in the form of a ring body forming a molding ring seal.
• connection connections exhaust gas lines, for example, for connections of lines to catalysts or cylinder heads of internal combustion engines.
• the respective annular body is a metallic component with a small wall thickness, the annular body usually having a profiled shape, for example in the form of a C profile.
• the invention has the object, a sealing arrangement, which is provided in particular for line connections to the exhaust system of internal combustion engines available to make, in which the assembly process can be carried out comparatively easily and safely.
• the sealing arrangement according to the invention forms a unit containing the respective annular body in a captive manner, the entire working sequence during installation is particularly simple and safe, because neither during the supply of the sealing arrangements to the actual
• the annular seal forming the annular ring has a cross-section C-, U- or V-shaped profile can be formed as a holding device at one edge of the profile several lugs which form on the profile circumferentially slightly protruding retaining claws, the deform resiliently when attaching the ring body on the seal carrier to form the frictional connection on the seal carrier and thus secure in the manner of spring claws the ring body on the seal carrier.
• the lugs may be integrally formed on a radially outer edge of the profile of the annular body or on a radially inner edge of the profile of the annular body. Depending on the design of the seal carrier and the respective arrangement of the ring body can thus grip the retaining claws on an inner diameter or on an outer diameter.
• seal carrier is a planar board with at least one opening for the exhaust gas flow and the annular body extends along the edge of the respective opening, which forms the captive force transmission can be made by pressing the lugs in the opening edge of the board opening.
• the seal carrier as a seat for the annular body on an annular recess which surrounds a channel leading to the exhaust gas stream and is bounded by a wall extending in the axial direction, with which cooperate the retaining claws forming noses.
• the arrangement can be made such that the annular recess is open at its radially inward end to the channel leading to the exhaust gas flow, wherein on a radially outer wall of the depression the adhesion is formed with the noses serving as retaining claws.
• the recess may be in the form of an annular groove having two radially spaced apart axially extending walls, of which the radially inner or outer wall forms the frictional connection with the noses serving as retaining claws.
• the annular groove for the annular body forms a chamber, resulting in both the loss of attachment of the ring body as well as in terms of reliability of the seal formed considerable advantages.
• the invention also provides an annular body, which is provided for use as a molding ring seal in the sealing arrangement according to the invention and has the features of claim 10. Further design features of the annular body according to the invention are specified in patent claims 11 to 13. The invention with reference to embodiments shown in the drawings will be explained in detail. Show it:
• FIG. 1 is a plan view of an embodiment of the Dichtungsanord- tion in the form of a so-called sealing goggles for use at the connection between an exhaust manifold and a cylinder head, wherein a planar board is provided as a seal carrier and shown in the Fig. Right side and left side different embodiments of the board which are distinguished by differently shaped, thermal decoupling breakthroughs;
• FIG. 2 shows a plan view of the annular body forming a molding ring seal of the sealing arrangement according to the invention
• FIG. FIG. 3 is a greatly enlarged detail view of the area indicated by III in FIG. 2;
• FIG. 4 shows a partial cross-section of the annular body of FIG. 2 and of the associated edge section of the opening of the circuit board of FIG. 1, greatly enlarged and broken away from FIG. 2, the state being shown prior to attachment of the annular body to the circuit board;
• FIG. 5 is a representation corresponding to FIG. 4, wherein the ring body is shown after insertion into the opening of the board;
• FIG. Fig. 6 is a perspective oblique view of the annular body of the seal assembly according to the invention;
• FIG. 7 shows a partial cross-section of the annular body drawn greatly enlarged compared to FIG. 6, inserted into a recess serving as the seat of the annular body in a connection flange forming the seal carrier and
• FIG. 4 shows a partial cross-section of the annular body of FIG. 2 and of the associated edge section of the opening of the circuit board of FIG. 1, greatly enlarged and broken away from FIG. 2, the state being shown prior to attachment of the annular body to the circuit board;
• FIG. 5
• Fig. 8 is a similar to FIG. 7 partial cross-section, however, wherein the annular body at its radially inner profile edge with retaining claws forming, protruding lugs and provided in a by a
• the seal assembly has the form of a so-called sealing goggles, in which a seal carrier forming, flat metal circuit board two board areas 1 and 3, which are interconnected via a comparatively narrow board web 5 together, wherein the web 5 extends along the longitudinal axis 7 of the seal assembly.
• circular center 9 is located in each board area 1 and 3 each have a circular opening 11 for the passage of an exhaust gas stream, which emerges from a respective outlet opening of a cylinder head (not shown).
• screw holes 13 are provided for fastening screws that attach a manifold, not shown, and the seal assembly on the cylinder head.
• FIG. 1 In addition to the screw holes 13 are located in the board areas 1 and 3 breakthroughs 15, which aims to reduce the heat-conducting surface of the seal assembly and thus a thermal decoupling between the cylinder head and the exhaust manifold.
• FIG. 1 two different embodiments are illustrated for the apertures 15, namely sickle-like apertures 15 in the circuit board area 1 on the left, while apertures 15 in the form of round holes 15 are provided in the circuit board area located on the right.
• a metallic annular body 25 (see FIG. 2) which has the cross-sectional shape of a C-profile 19.
• the ring body 25 is also a thin-walled metallic component whose wall thickness, as is the case with the board, is for example in the range of 0.3 mm .
• the Annular body 25 at the its radially outer end 21 opposite profile edge three retaining lugs 27 which are distributed regularly on the circumference of the annular body 25, see Fig. 2.
• retaining lugs 27 As best seen in the enlarged view of Fig. 3, form the retaining lugs 27 in (undeformed) initial state claw-like projections which protrude radially slightly at the respective peripheral edge 26 of the annular body 25.
• Fig. 4 shows the initial state shortly before the attachment of the annular body 25 at the edge of the opening 11 of the respective board area 1, 3, wherein it can be seen that the retaining lugs 27 extend radially outwardly slightly beyond the edge of the opening 1 1. If the annular body is pressed into the opening 11 by applying a compressive force in accordance with the force arrow 29, a spring-elastic deformation of the retaining lugs 27 results when pressing into the opening 11, see FIG. 5, whereby a frictional connection is produced at the opening 11 acts as a holding force by which the ring body 25 is held captive on the opening 11.
• the annular body 25 By the pressing force exerted during pressing the annular body 25 can be slightly deformed at its retaining lugs 27 having peripheral edge 26 whereby the C-profile 19 forming compressive force below the board 1, 3 generates a slight bulge 23. 5 therefore shows a bulge 23 for the ring body 25 at its edge opposite the profile end 21 (peripheral edge 26 in FIG. 3).
• FIG. 7 shows an example in which the seat for the annular body 25 is formed by a machined into the abutment surface of the flange 41, annular recess 45, which open at the radially inner end to the exhaust passage 43 and is limited at the radially outer end by a wall 47 extending in the axial direction.
• Fig. 8 shows an example in which the profile of the annular body 25, unlike the example of Figs. 4 to 7, is opened radially inwardly and the retaining lugs 27 are located on a radially inner profile edge.
• an annular groove 49 surrounding the exhaust passage 43 is formed in the flange 61 forming the seal carrier, which is formed by a radially inner axially extending wall 51 and a radially outer axially extending one Wall 53 is limited.
• the retaining lugs 27 are supported on the radially inner wall 51, wherein in the same way as in Fig. 7, the captive securing force-forming is formed. Also in the example of Fig.
• the term "sealing or forming ring” also extends to ring designs with an oval shape or those in a rectangular shape, wherein preferably the corners of the rectangle are rounded, other ring shapes are possible here preferably insofar as its respective geometry.

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• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Gasket Seals (AREA)
• Exhaust Silencers (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=38922062

Family Applications (1)

Country Status (6)

Families Citing this family (12)

Family Cites Families (7)

• 2006
  • 2006-09-27 DE DE102006045583A patent/DE102006045583A1/de not_active Ceased
• 2007
  • 2007-08-09 EP EP07801567A patent/EP2066931A1/de not_active Withdrawn
  • 2007-08-09 WO PCT/EP2007/007034 patent/WO2008037321A1/de active Application Filing
  • 2007-08-09 JP JP2009529549A patent/JP2010505055A/ja active Pending
  • 2007-08-09 CN CNA2007800361192A patent/CN101583813A/zh active Pending
  • 2007-09-26 US US11/902,949 patent/US20080073859A1/en not_active Abandoned

Non-Patent Citations (1)

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