EP3851649A1 - Système de gaz d'échappement - Google Patents

Système de gaz d'échappement Download PDF

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Publication number
EP3851649A1
EP3851649A1 EP20212609.0A EP20212609A EP3851649A1 EP 3851649 A1 EP3851649 A1 EP 3851649A1 EP 20212609 A EP20212609 A EP 20212609A EP 3851649 A1 EP3851649 A1 EP 3851649A1
Authority
EP
European Patent Office
Prior art keywords
sealing surface
sealing
exhaust gas
treatment unit
gas treatment
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.)
Granted
Application number
EP20212609.0A
Other languages
German (de)
English (en)
Other versions
EP3851649B1 (fr
Inventor
Peter Kast
Michael Dentler
Vincent Eder
Oliver Karabateas
Felix Neumann
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.)
Eberspaecher Exhaust Technology GmbH and Co KG
Original Assignee
Eberspaecher Exhaust Technology GmbH and Co KG
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
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Publication of EP3851649A1 publication Critical patent/EP3851649A1/fr
Application granted granted Critical
Publication of EP3851649B1 publication Critical patent/EP3851649B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
    • F01N13/1844—Mechanical joints
    • 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
    • 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
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F01N13/085—Other arrangements or adaptations of exhaust conduits having means preventing foreign matter from entering exhaust conduit
    • 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
    • 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
    • F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
    • F01N13/1844—Mechanical joints
    • F01N13/185—Mechanical joints the connection being realised by deforming housing, tube, baffle, plate, or parts thereof
    • 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
    • F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
    • F01N13/1844—Mechanical joints
    • F01N13/1855—Mechanical joints the connection being realised by using bolts, screws, rivets or the like
    • 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
    • F01N13/1888—Construction facilitating manufacture, assembly, or disassembly the housing of the assembly consisting of two or more parts, e.g. two half-shells
    • F01N13/1894—Construction facilitating manufacture, assembly, or disassembly the housing of the assembly consisting of two or more parts, e.g. two half-shells the parts being assembled in longitudinal direction
    • 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
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/0211—Arrangements for mounting filtering elements in housing, e.g. with means for compensating thermal expansion or vibration
    • 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
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2839—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
    • 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
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2892—Exhaust flow directors or the like, e.g. upstream of catalytic device
    • 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
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/20—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a flow director or deflector
    • 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
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/30—Removable or rechangeable blocks or cartridges, e.g. for filters

Definitions

  • the present invention relates to an exhaust system for an internal combustion engine in a vehicle.
  • exhaust gas treatment units such as catalytic converters or particle filters
  • exhaust systems can be designed so that there is access to the exhaust gas treatment units in order to clean or replace them, for example.
  • This exhaust system is characterized in that a first sealing element is arranged between the first sealing surface and the second sealing surface, that a second sealing element is arranged between the third sealing surface and the fourth sealing surface, and that the first sealing element and the second sealing element are structurally identical to one another.
  • sealing elements between the sealing surfaces to be sealed with respect to one another on the support structure, the exhaust gas treatment unit and the closing element ensures on the one hand that, despite the possibility of accessing the exhaust gas treatment unit by removing the closing element, if the closing element is attached to the carrier structure together with the exhaust gas treatment unit is specified, a gas-tight seal is achieved in the area of the sealing surfaces opposite one another in pairs. Since the two sealing elements are structurally identical to one another, that is to say identical components are used for the first sealing element and the second sealing element, the structure is simplified on the other hand. Furthermore, the risk is eliminated that, during assembly, sealing elements are incorrectly assigned to the sealing surfaces to be sealed against one another.
  • the first sealing element and the second sealing element have a ring-like sealing element body, with the Sealing element body radially inwardly protruding inner clamping portions are provided and on an outer circumferential region of the sealing element body radially outwardly protruding outer clamping portions are provided.
  • the sealing elements and the exhaust gas treatment unit can be coordinated with one another in such a way that the first sealing element is clamped with its inner clamping sections on the exhaust gas treatment unit, and that the second sealing element is clamped with its outer clamping sections on the exhaust gas treatment unit.
  • the exhaust gas treatment unit can thus be joined together with the two sealing elements as a preassembly assembly and then inserted into the receiving opening in the support structure before the closing element is brought up and fixed to the support structure together with the exhaust gas treatment unit.
  • the exhaust gas treatment unit can comprise a jacket elongated in the direction of the exhaust gas treatment unit longitudinal axis with a first pipe section carrying an exhaust gas treatment assembly, a radial expansion area adjoining the first pipe section radially on the inside and providing the second sealing surface and the third sealing surface, and a second pipe section adjoining the radial expansion area radially on the outside.
  • This structure of the exhaust gas treatment unit can be used to position the two sealing elements on it in a defined manner.
  • the first sealing element is clamped with its inner clamping sections in the area of the first pipe section or a transition from the first pipe section to the radial expansion area on the jacket, and / or that the second sealing element with its outer clamping sections in the area of the second pipe section or a transition from the radial expansion area to the second pipe section is clamped on the jacket.
  • the first sealing surface and the second sealing surface each have radially inner and radially outer sealing surface edge regions that are axially offset from one another, and / or that the third Sealing surface and the fourth sealing surface each axially offset from one another, radially inner and radially outer Have sealing surface edge areas.
  • the carrier structure can comprise a carrier part providing the receiving opening, with a connecting flange providing the first sealing surface and surrounding the opening center axis in a ring-like manner being provided on the carrier part.
  • a first fastening element clamping surface surrounding the receiving opening in a ring-like manner can be provided on the carrier structure
  • a ring-like second fastening element clamping surface can be provided on the closing element
  • a fastening element which fixes the closing element together with the exhaust gas treatment unit on the carrier structure Fastening element can radially overlap the first fastening element clamping surface and the second fastening element clamping surface and press the closing element against the carrier structure with the exhaust gas treatment unit being interposed.
  • first fastening element clamping surface and the second fastening element clamping surface are arranged axially facing away from one another and are inclined towards one another from radially inward to radially outward.
  • the fastening element can be designed in the manner of a clamp.
  • the first sealing element and the second sealing element can be designed as metal bead seals.
  • first sealing surface and the second sealing surface are curved in an essentially complementary manner from radially inward to radially outward in the axial direction , and / or that the third sealing surface and the fourth sealing surface are curved from radially inside to radially outside in the axial direction essentially complementary to one another.
  • first sealing surface and the second sealing surface are each curved essentially along a circular line from radially inside to radially outside, and / or that the third sealing surface and the fourth sealing surface from are curved radially inwards to radially outwards in each case essentially along a circular line.
  • Each of these ring-like surfaces thus essentially forms a segment of a spherical cap.
  • a center of curvature of the first sealing surface is approximately on the opening center axis, and / or that a center of curvature of the second sealing surface and a center of curvature of the third sealing surface are approximately on the longitudinal axis of the exhaust gas treatment unit.
  • This refinement can be further supported by the fact that a terminating element is fixed to the support structure together with the exhaust gas treatment unit
  • the center of curvature of the fourth sealing surface lies approximately on the opening center axis.
  • a radius of curvature of the second sealing surface be smaller than a radius of curvature of the first in order to provide the installation space required to accommodate these sealing elements while maintaining the ball-and-socket joint functionality Sealing surface, and / or that a radius of curvature of the fourth sealing surface is smaller than a radius of curvature of the third sealing surface, and / and that a radius of curvature of the third sealing surface is smaller than a radius of curvature of the second sealing surface.
  • FIG. 1 an exhaust system shown in partial longitudinal section is generally designated by 10.
  • the Fig. 1 the area of the exhaust system 10 in which an exhaust treatment unit 12 is inserted into a housing 14 of the exhaust system 10.
  • the housing 14 has a housing opening 16.
  • a ring-like carrier part 18, which is provided, for example, as a shaped sheet metal part, is fixed to the housing 14 with a connecting flange 22, for example by welding.
  • the carrier part 18 With its ring-like structure, the carrier part 18 provides a receiving opening 20 for the exhaust gas treatment unit 12 with an opening center axis O.
  • the carrier part 18 has a starting point the connecting flange 22, which extends approximately radially with respect to the opening center axis O, has a further connecting flange 26 which is inclined radially outwards and away from the housing 14 from the cylindrical portion 24 and thus away from the receiving opening 20.
  • a first sealing surface 28 is provided, the radially inner sealing surface edge area and the radially outer sealing surface edge area of which are also axially offset from one another with respect to the opening center axis O due to the inclined orientation of the connecting flange 26.
  • the exhaust gas treatment unit 12 also generally referred to as a cartridge, comprises a jacket 30 constructed with sheet metal material.
  • the jacket 30 has a, for example, essentially cylindrical first pipe section 32 which is elongated in the direction of an exhaust gas treatment unit longitudinal axis A. It should be pointed out that when the exhaust gas treatment unit 12 is fastened to the carrier part 18, which essentially provides a carrier structure 34, as described below, the exhaust gas treatment unit longitudinal axis A can approximately correspond to the opening center axis O.
  • An exhaust gas treatment assembly 36 is held in the first pipe section 32, for example by a bearing mat 38 surrounding it.
  • the exhaust gas treatment assembly 36 can comprise, for example, a catalytic converter block or particle filter block through which the exhaust gas can flow.
  • the jacket 30 has a radial widening area 40. This extends radially outward from the first pipe section 32 and, like the connecting flange 26 of the support part 18, is axially positioned with its basically ring-like structure.
  • a second sealing surface 42 is provided on the radial expansion area 40. Due to the inclination of the radial expansion area 40, there are also a radially inner sealing surface edge area and a radially outer sealing surface edge area of the second sealing surface 42 offset axially from one another.
  • a third sealing surface 44 which is provided on a side of the radial expansion region 40 facing away from the second sealing surface 42.
  • Their radially inner sealing surface edge area and radially outer sealing surface edge area are also axially offset from one another.
  • an approximately cylindrical second tube section 46 of the jacket 30 adjoins the radial widening area 40, with which the jacket 30 ends, for example, axially.
  • the assemblies interacting with one another or to be inserted into one another i.e. the carrier element 18, in particular in the area of the connecting flange 26, and the jacket 30, in particular in the area of the radial expansion area 40, are designed with a circular circumferential contour.
  • the exhaust system 10 further comprises a closing element, generally designated 48.
  • the closing element 48 can be designed, for example, in such a way that, following the exhaust gas treatment assembly 36 axially at a distance, it closes the opening formed in the jacket 30 of the exhaust gas treatment unit 12 against the escape of exhaust gas and, for example, closes the exhaust gas flowing through the exhaust gas treatment assembly 36 laterally or radially outward deflects, so that it can flow further, for example through openings provided in the jacket 30, to an exhaust gas flow space formed, for example, in the housing 14.
  • the closing element 48 can also have one or more passage openings through which the exhaust gas can pass, for example after it has flowed through the exhaust gas treatment assembly 12, in order to then be directed to further system areas of the exhaust system 10.
  • the closing element 48 which is approximately disk-like, for example, provides a fourth sealing surface 50 in its radially outer region.
  • the closing element 48 also has a circular circumferential contour, in particular in the area of the fourth sealing surface 50.
  • the fourth sealing surface 50 is inclined, has That is, in the assembled state, at an angle of incidence with respect to the opening center axis O or the exhaust gas treatment unit longitudinal axis A, so that the radially inner sealing surface edge area and the radially outer sealing surface edge area of the fourth sealing surface 50 are also axially offset from one another.
  • sealing surfaces 28, 42, 44, 50 For the shaping of the sealing surfaces 28, 42, 44, 50, as will be explained below, different design variants are possible. For example, these can be designed in the manner of a cone or a truncated cone, so that they extend in an approximately non-curved manner from radially inside to radially outside in the axial direction.
  • the setting angle of all sealing surfaces 28, 42, 44, 50 is advantageously the same.
  • a first sealing element 52 is provided between the first sealing surface 28 and the second sealing surface 42 opposite it.
  • a second sealing element 54 is provided between the third sealing surface 44 and the fourth sealing surface 50 opposite it. In the assembled state, the two sealing elements 52, 54 are compressed between the sealing surfaces 28, 42, 44, 50 receiving them between them and thus create a gas-tight seal in the area of the sealing surfaces 28, 42 and 44, 50 opposite one another in pairs.
  • a fastening element 56 for example designed as a clamp, is provided. This has an approximately U-shaped or V-shaped shape and, with its legs positioned relative to one another, overlaps a first fastening element clamping surface 58 provided on the connecting flange 26 and a second fastening element clamping surface 60 provided on the end element 48 in the radial direction. These two fastening element clamping surfaces 58, 60 are positioned in opposite directions to one another, that is to say inclined towards one another from radially inside to radially outside.
  • the Fig. 2 shows the structure of the sealing elements 52, 54, which are identical to one another, i.e. have an identical structure , 50 basically has a generally conical shape.
  • the sealing element body 62 can be constructed or, as in FIG Fig. 2 recognizable, have an approximately S- or Z-shaped shape.
  • inner clamping sections 66 projecting radially inward are provided on an inner circumferential area 64 of the sealing element body 62. These tab-like inner clamping sections 66 can be provided with a circumferential spacing from one another and are preferably inclined with respect to a longitudinal center axis M of the sealing element body 62 so that they extend radially inward and away from the sealing element body 62.
  • Outer clamping sections 70 projecting radially outward therefrom are provided on an outer circumferential area 68 of the sealing element body 62.
  • the outer clamping sections 70 are also provided with a circumferential spacing from one another and adjusted with respect to the longitudinal center axis M of the sealing element, so that they extend radially outward and axially away from the sealing element body 62 in adaptation to the generally approximately conical structure of the sealing elements 52, 54.
  • the sealing elements 54, 54 which are identical to one another, are dimensioned in such a way that they can enter into a clamping interaction with the jacket 30 of the exhaust gas treatment unit 12 with their inner clamping sections 66 or outer clamping sections 70.
  • the first sealing element 52 is guided axially over the first pipe section 32 of the jacket 30 until the latter is positioned in the region of the second sealing surface 42.
  • the inner clamping sections 66 are dimensioned or matched to the outer dimensions of the first pipe section 32 so that when the first sealing element 52 is pushed onto the jacket 30 they are under tension on the first pipe section 32 or a transition area between the first pipe section 32 and the radial expansion area 40 and thus produce a clamping and holding effect for the first sealing element 52.
  • the second sealing element 54 is inserted into the second pipe section 46 for joining with the exhaust gas treatment unit 12 until it is positioned in the area of the third sealing surface 44.
  • the outer clamping sections 70 are dimensioned or matched to the inner dimensions of the second pipe section 46 in such a way that when the second sealing element 54 is inserted, the outer clamping sections 70 press radially outward against the second pipe section 46 and thus have a clamping and holding effect for the second Provide sealing element 54.
  • the exhaust gas treatment unit 12 can thus be provided with the two sealing elements 52, 54 as a pre-assembly assembly, during the assembly of which it is not necessary to pay attention to which of the two sealing elements 52, 54 is installed where, since the two sealing elements 52, 54 are structurally identical to one another and each of the the two sealing elements 52, 54 could be used both in association with the second sealing surface 42 and in association with the third sealing surface 44 and attached to the exhaust gas treatment unit 12. This reduces the number of different components to be kept ready for the construction of the exhaust system 10 and avoids errors during assembly.
  • this pre-assembly assembly can be pushed through the receiving opening 20 into the housing 14 until the second sealing surface 42 or the first sealing element 52 comes to rest on the first sealing surface 28.
  • the closing element 48 can axially in the second Pipe section 46 are introduced until the fourth sealing surface 50 lies opposite the third sealing surface 44 or rests on the second sealing element 54.
  • the fastening element 56 can then be applied from the radial outside and, by generating the previously described tensioning effect and further compression of the two sealing elements 52, 54, create a firm bond between the carrier part 18 and the exhaust gas treatment unit 12 and in the closing element 48.
  • the second sealing element 54 could also only be introduced when the exhaust gas treatment unit 12 with the first sealing element 52 provided thereon has been inserted into the receiving opening 20.
  • the sealing elements 52, 54 which are identical to one another, ensure a tight seal.
  • the adjustment of the sealing surfaces 28, 42, 44, 50 interacting with one another or the two sealing elements 52, 54 with respect to the opening center axis O or the exhaust gas treatment unit longitudinal axis A at the same time center the exhaust gas treatment unit 12 with respect to the carrier part 18 and thus supports its exact positioning. so that it can also be ensured that a region of the casing 30 of the exhaust gas treatment unit 12 that is not shown in the figures and is located in the interior of the housing can be radially supported in a defined manner by support elements also provided there.
  • the Fig. 3 illustrates in a schematic representation a particularly advantageous embodiment of the sealing surfaces 28, 42, 44, 50 or the assemblies having these sealing surfaces.
  • the connecting flange 26 of the support part 18, the radial expansion area 40 and the cover element 48 are shaped in its radially outer area in such a way that the sealing surfaces 28, 42, 44, 50 formed thereon with respect to the opening center axis O or the Exhaust gas treatment unit longitudinal axis A not only have a ring-like structure, but are also curved in their course from radially inside to radially outside in the axial direction.
  • the sealing surfaces 28, 42, 44, 50 are designed with a spherical curvature, that is to say that they each extend along a circular line in a curved manner from radially inside to radially outside.
  • the concavely arched or curved first sealing surface 28 and the complementary convexly arched or curved second sealing surface 42 form a ball-and-socket joint-like connection.
  • the concavely curved or curved third sealing surface 44 and the complementary convexly curved or curved fourth sealing surface 50 form a further ball joint formation, so that the exhaust gas treatment unit 12 with its jacket 30 pivots in the manner of a ball joint with respect to the carrier part 18 and also with respect to the cover element 48 can be. It must be taken into account here that the position of the cover element 48 with respect to the carrier part 18 can be predefined in a defined manner by the interaction of these two components with the fastening element 56.
  • the spherically curved sealing surfaces 28, 42, 44, 50 which thus provide segments of spherical caps, can be coordinated with one another in such a way that a respective center of curvature K of these sealing surfaces 28, 42, 44, 50 on the Opening center axis O lies, which applies in particular to the first sealing surface 28 or the fourth sealing surface 50 when the cover element 48 is attached to the carrier part 18, or lies on the exhaust gas treatment unit longitudinal axis A, which is particularly true for the second sealing surface 42 and the third sealing surface 44 applies to the radial expansion area 40.
  • the thus guaranteed pivotability of the exhaust gas treatment unit 12 with respect to the carrier part 18 or the carrier structure 34 makes it possible to position the exhaust gas treatment unit 12 when the exhaust gas treatment unit 12 is inserted into the exhaust system 10 so that its end area located in the housing 14 without the The emergence of deformations or constraints can be supported in a defined manner on the support elements provided there. This can lead to the fact that, in the assembled state, the opening center axis O and the exhaust gas treatment unit longitudinal axis A are not congruent with one another, but rather run at an angle to one another.
  • a radius of curvature of the fourth sealing surface 50 can be smaller than a radius of curvature of the third sealing surface 44.
  • the radius of curvature of the third sealing surface 44 is smaller than the radius of curvature of the second sealing surface 42.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)
EP20212609.0A 2020-01-09 2020-12-09 Système de gaz d'échappement Active EP3851649B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102020100285.8A DE102020100285A1 (de) 2020-01-09 2020-01-09 Abgasanlage

Publications (2)

Publication Number Publication Date
EP3851649A1 true EP3851649A1 (fr) 2021-07-21
EP3851649B1 EP3851649B1 (fr) 2023-10-25

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Country Link
US (1) US11268432B2 (fr)
EP (1) EP3851649B1 (fr)
CN (1) CN113107659B (fr)
DE (1) DE102020100285A1 (fr)

Citations (4)

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EP2320116A1 (fr) * 2009-11-10 2011-05-11 Carl Freudenberg KG Connexion de conduite
EP2420656A2 (fr) * 2010-08-19 2012-02-22 J. Eberspächer GmbH & Co. KG Dispositif de nettoyage des gaz d'échappement, installation de gaz d'échappement, procédé de démontage
EP3792463A1 (fr) * 2019-09-16 2021-03-17 Roth Technik Austria Gesellschaft Mit Beschränkter Haftung Dispositif de traitement des gaz d'échappement pourvu d'agencements de traitement des gaz d'échappement échangeables par libération d'un composé soluble non destructif

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FR2787137B1 (fr) * 1998-12-14 2001-02-23 Ecia Equip Composants Ind Auto Dispositif de depollution des gaz d'echappement
DE10144613A1 (de) * 2001-09-11 2003-04-03 Eberspaecher J Gmbh & Co Abgasreinigungsanordnung einer Kraftfahrzeug-Abgasanlage
DE10216272B9 (de) * 2002-04-12 2006-05-18 J. Eberspächer GmbH & Co. KG Abgasbehandlungsanordnung für eine Brennkraftmaschine
JP4395360B2 (ja) * 2003-11-27 2010-01-06 日野自動車株式会社 排気浄化装置
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JP2008531952A (ja) * 2005-03-04 2008-08-14 ブリーズ−トルカ・プロダクツ・リミテッド・ライアビリティ・カンパニー Ｖリングインサートを備えたパイプクランプアセンブリ
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Publication number Priority date Publication date Assignee Title
FR2906864A1 (fr) * 2006-10-10 2008-04-11 Caillau Ets Systeme de serrage pour le raccordement de deux tubes ayant des surfaces d'appui et assemblage ainsi obtenu
EP2320116A1 (fr) * 2009-11-10 2011-05-11 Carl Freudenberg KG Connexion de conduite
EP2420656A2 (fr) * 2010-08-19 2012-02-22 J. Eberspächer GmbH & Co. KG Dispositif de nettoyage des gaz d'échappement, installation de gaz d'échappement, procédé de démontage
EP3792463A1 (fr) * 2019-09-16 2021-03-17 Roth Technik Austria Gesellschaft Mit Beschränkter Haftung Dispositif de traitement des gaz d'échappement pourvu d'agencements de traitement des gaz d'échappement échangeables par libération d'un composé soluble non destructif

Also Published As

Publication number Publication date
EP3851649B1 (fr) 2023-10-25
US20210215087A1 (en) 2021-07-15
US11268432B2 (en) 2022-03-08
DE102020100285A1 (de) 2021-07-15
CN113107659B (zh) 2023-07-07
CN113107659A (zh) 2021-07-13

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