EP3851649B1 - Abgasanlage - Google Patents

Abgasanlage Download PDF

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Publication number
EP3851649B1
EP3851649B1 EP20212609.0A EP20212609A EP3851649B1 EP 3851649 B1 EP3851649 B1 EP 3851649B1 EP 20212609 A EP20212609 A EP 20212609A EP 3851649 B1 EP3851649 B1 EP 3851649B1
Authority
EP
European Patent Office
Prior art keywords
sealing surface
sealing
exhaust gas
gas treatment
treatment unit
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.)
Active
Application number
EP20212609.0A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3851649A1 (de
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
Purem GmbH
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 Purem GmbH filed Critical Purem GmbH
Publication of EP3851649A1 publication Critical patent/EP3851649A1/de
Application granted granted Critical
Publication of EP3851649B1 publication Critical patent/EP3851649B1/de
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
    • F01N13/1805—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
    • 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
    • F01N13/1838—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 in such a way that there is access to the exhaust gas treatment units in order to clean or replace them, for example.
  • An exhaust system is from the EP 2 420 656 A2 known.
  • a connecting flange providing two sealing surfaces of an exhaust gas treatment unit which is elongated in the direction of a longitudinal axis is arranged between two connecting flanges of a support structure which are to be connected in a gas-tight manner and each provide a sealing surface, on the one hand, and a further exhaust gas treatment unit on the other hand.
  • Sealing elements designed as bead seals, for example, are arranged between the pairs of opposite sealing surfaces.
  • 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 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 end element ensures, on the one hand, that despite the possibility of gaining access to the exhaust gas treatment unit by removing the end element, when the end element is attached to the support structure together with the exhaust gas treatment unit is determined, a gas-tight seal is achieved in the area of the sealing surfaces opposite each other in pairs.
  • the two sealing elements are structurally identical to one another, i.e. identical components are used for the first sealing element and the second sealing element, the structure is simplified. The danger continues Eliminates the fact that sealing elements are incorrectly assigned to the sealing surfaces to be sealed against each other during assembly.
  • the first sealing element and the second sealing element have a ring-like sealing element body, with radial direction on an inner circumferential region of the sealing element body Internally projecting internal clamping sections are provided and radially outwardly projecting external clamping sections are provided on an outer circumferential region of the sealing element body.
  • the sealing elements and the exhaust gas treatment unit are 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 assembled together with the two sealing elements as a pre-assembly assembly and then inserted into the receiving opening in the support structure before the end element is brought in and fixed to the support structure together with the exhaust gas treatment unit.
  • the exhaust gas treatment unit can comprise a jacket which is elongated in the direction of the exhaust gas treatment unit longitudinal axis and has a first pipe section carrying an exhaust gas treatment assembly, a radial expansion region 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 region 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 with its inner clamping sections is in the area of the first pipe section or a transition from the first Pipe section is clamped to the radial expansion area on the jacket, and / or that the second sealing element is clamped with its outer clamping sections on the jacket in the area of the second pipe section or a transition from the radial expansion area to the second pipe section.
  • 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 have axially offset radially inner and radially outer sealing surface edge regions.
  • the sealing surfaces which are basically ring-shaped, provide a conical or spherical segment-like structure due to their axial expansion, which supports a centering effect.
  • the support structure can comprise a support part which provides the receiving opening, with a connecting flange which provides the first sealing surface and surrounds the opening center axis in a ring-like manner being provided on the support part.
  • a first fastening element clamping surface surrounding the receiving opening in a ring-like manner can be provided on the support structure
  • a ring-like second fastening element clamping surface can be provided on the end element
  • Fastening element can radially overlap the first fastening element clamping surface and the second fastening element clamping surface and press the end element against the support structure with the exhaust gas treatment unit temporarily stored.
  • first fastening element clamping surface and the second fastening element clamping surface are arranged axially away from one another and are inclined towards one another from radially inside to radially outside.
  • 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 designed to be curved substantially complementary to one another from radially inside to radially outside in the axial direction, and/or that the third sealing surface and the fourth sealing surface are curved from radially inside to radially outside axial direction are essentially curved in a complementary manner 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 of radially inwards to radially outwards essentially along a circular line are curved.
  • Each of these ring-like surfaces essentially forms a segment of a spherical cap.
  • a center of curvature of the first sealing surface lies approximately on the opening center axis
  • a center of curvature of the second sealing surface and a center of curvature of the third sealing surface lie approximately on the exhaust gas treatment unit longitudinal axis.
  • This embodiment can be further supported by the fact that when the end element is fixed to the support structure together with the exhaust gas treatment unit, a center of curvature of the fourth sealing surface lies approximately on the opening center axis.
  • a radius of curvature of the second sealing surface is smaller than a radius of curvature of the first 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/or 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 a partial longitudinal section is generally designated 10. This shows Fig. 1 the area of the exhaust system 10, in which an exhaust gas 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, provided for example as a formed sheet metal part, with a connecting flange 22 is fixed to the housing 14, for example by welding.
  • 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, starting from an approximately cylindrical section 24 extending on the connecting flange 22, which extends approximately radially with respect to the opening center axis O, a further one which is inclined radially outwards away from the cylindrical section 24 and thus away from the receiving opening 20 and in the direction of the housing 14 Connecting flange 26.
  • a first sealing surface 28 is provided on this connecting flange 26, on the side oriented away from the housing 14, a first sealing surface 28 is provided, the radially inner sealing surface edge region and radially outer sealing surface edge region being 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, for example, a substantially cylindrical first pipe section 32, which is elongated in the direction of an exhaust gas treatment unit longitudinal axis A. It should be noted that when the exhaust gas treatment unit 12 is attached in the manner described below to the carrier part 18, which essentially provides a carrier structure 34, 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, for example, comprise a catalyst block or particle filter block through which the exhaust gas can flow.
  • the jacket 30 has a radial expansion region 40.
  • This extends radially outwards from the first tube 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 extension region 40. Due to the positioning of the radial extension region 40, a radially inner sealing surface edge region and a radially outer sealing surface edge region of the second sealing surface 42 are also axially offset 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 region and radially outer sealing surface edge region are also axially offset from one another.
  • the radial extension region 40 is adjoined by, for example, an approximately cylindrical second pipe section 46 of the jacket 30, with which the jacket 30 ends, for example, axially.
  • the assemblies that interact with one another or are 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 extension area 40, are designed with a circular circumferential contour.
  • the exhaust system 10 further includes a closure element generally designated 48.
  • the closing element 48 can, for example, be designed so 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 exit of exhaust gas and, for example, the exhaust gas flowing through the exhaust gas treatment assembly 36 laterally or radially outwards redirects so that this For example, through openings provided in the jacket 30, it can flow further 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 designed, for example, in an approximately disk-like manner, provides a fourth sealing surface 50 in its radially outer region.
  • the end element 48 also has a circular circumferential contour, particularly in the area of the fourth sealing surface 50.
  • the fourth sealing surface 50 is inclined, so in the assembled state it has an angle of attack 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 region and the radially outer sealing surface edge region of the fourth sealing surface 50 are also axially offset from one another lay.
  • sealing surfaces 28, 42, 44, 50 can be designed like a cone or truncated cone, so that they extend from radially inside to radially outside in the axial direction in an approximately uncurved manner.
  • angle of attack of all sealing surfaces 28, 42, 44, 50 is 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 which accommodate them between them and thus produce a gas-tight seal in the area of the sealing surfaces 28, 42 and 44, 50 lying opposite one another in pairs.
  • a fastening element 56 designed, for example, as a clamp is provided.
  • This has an approximately U- or V-shaped shape and, with its legs positioned relative to one another, engages over 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 fastener clamping surfaces 58, 60 are positioned in opposite directions to one another, i.e. i.e., inclined towards each other 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.
  • These sealing elements 52, 54 which are provided as metal bead seals as formed sheet metal parts, for example, have a ring-like, in particular circular ring-like sealing element body 62, which, in adaptation to the position of the sealing surfaces 28, 42, 44 , 50 basically has a generally conical shape.
  • the sealing element body 62 can be constructed with formations running in the circumferential direction, for example with a bead-like shape or, as in Fig. 2 recognizable, have an approximately S- or Z-shaped shape.
  • inner clamping sections 66 which project radially inwards are provided on an inner circumferential region 64 of the sealing element body 62. These tab-like inner clamping sections 66 can be provided at a circumferential distance 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 inwards and away from the sealing element body 62.
  • outer clamping sections 70 projecting radially outwards are provided on an outer peripheral region 68 of the sealing element body 62.
  • the outer clamping sections 70 are also provided at a circumferential distance from one another and are positioned with respect to the longitudinal center axis M of the sealing element, so that they extend radially outwards 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 such that they can come into 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 it is positioned in the area of the second sealing surface 42.
  • the inner clamping sections 66 are dimensioned or matched to the outer dimension 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 rest and thus generate a clamping holding effect for the first sealing element 52.
  • the second sealing element 54 is inserted into the second pipe section 46 for assembly 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 dimension of the second pipe section 46 so that when the second sealing element 54 is inserted, the outer clamping sections 70 press radially outwards against the second pipe section 46 and thus have a clamping 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 identical to one another and each of 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 that have to be kept ready to build the exhaust system 10 and avoids errors during assembly.
  • this pre-assembly assembly can be pushed into the housing 14 through the receiving opening 20 until the second sealing surface 42 or the first sealing element 52 comes into contact with the first sealing surface 28.
  • the closing element 48 can then be inserted axially into the second pipe section 46 until the fourth sealing surface 50 is 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 clamping effect and further compression of the two sealing elements 52, 54, a firm connection of the carrier part 18 with the exhaust gas treatment unit 12 and in the closing element 48 can be created.
  • the second sealing element 54 could 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 Fig. 3 illustrates in a schematic representation a particularly advantageous design of the sealing surfaces 28, 42, 44, 50 or the assemblies having these sealing surfaces.
  • the connecting flange 26 of the carrier part 18, the radial extension region 40 and the cover element 48 are shaped in its radially outer region so that the sealing surfaces 28, 42, 44, 50 formed thereon are relative 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, they each run curved along a circular line 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 joint-like connection.
  • the concavely arched or curved third sealing surface 44 and the complementary convexly arched 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 should be taken into account that the position of the cover element 48 with respect to the carrier part 18 can be defined 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 each 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 lies on the opening center axis O, 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 to the exhaust gas treatment unit.
  • Longitudinal axis A lies, which applies in particular to the second sealing surface 42 and the third sealing surface 44 at the radial extension region 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, when inserting the exhaust gas treatment unit 12 into the exhaust system 10, to position the exhaust gas treatment unit 12 in such a way that, even with unavoidable manufacturing tolerances, its end region located in the housing 14 without this If deformations or constraints arise, they can be supported in a defined manner on support elements provided there. This can result in the opening center axis O and the exhaust gas treatment unit longitudinal axis A not being congruent with one another in the assembled state, but running at an angle to one another. However, this does not affect the positioning of the cover element 48 and also does not affect the functionality of the sealing elements 52, 54 arranged between the pairs of opposite sealing surfaces 28, 42, 44, 50 in this embodiment.
  • the sealing surfaces 28, 42 and 44, 50 which are opposite one another in pairs, are fundamentally always positioned in the same way for interaction with the two sealing elements 52, 54, regardless of differing positions of the opening center axis and the exhaust gas treatment unit longitudinal axis A , the sealing functionality of these sealing elements 52, 54 is not impaired by such a position adjustment of the exhaust gas treatment unit 12.
  • the various sealing surfaces are coordinated with one another in such a way that a radius of curvature of the second sealing surface 42 is smaller than one Radius of curvature of the first sealing surface 28.
  • This difference in the radius of curvature provides the installation space between the sealing surfaces 28, 42 required to accommodate the first sealing element, while enabling a concentric alignment of these sealing surfaces 28, 42.
  • 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 Abgasanlage Active EP3851649B1 (de)

Applications Claiming Priority (1)

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

Publications (2)

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EP3851649A1 EP3851649A1 (de) 2021-07-21
EP3851649B1 true EP3851649B1 (de) 2023-10-25

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US (1) US11268432B2 (zh)
EP (1) EP3851649B1 (zh)
CN (1) CN113107659B (zh)
DE (1) DE102020100285A1 (zh)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2420656B1 (de) * 2010-08-19 2018-04-04 Eberspächer Exhaust Technology GmbH & Co. KG Abgasreinigungsvorrichtung, Abgasanlage, Ausbauverfahren

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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
US7779624B2 (en) * 2004-09-08 2010-08-24 Donaldson Company, Inc. Joint for an engine exhaust system component
DE102004050302B4 (de) * 2004-10-15 2010-09-30 Norma Germany Gmbh Verbindung zweier Rohre und Dichtring für die Verbindung
WO2006094306A2 (en) * 2005-03-04 2006-09-08 Breeze-Torca Products, Llc Pipe clamp assembly with v-ring insert
FR2906864B1 (fr) * 2006-10-10 2012-04-20 Caillau Ets Systeme de serrage pour le raccordement de deux tubes ayant des surfaces d'appui et assemblage ainsi obtenu
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DE102009024534A1 (de) * 2009-06-10 2010-12-16 J. Eberspächer GmbH & Co. KG Abgasreinigungseinrichtung
US8328243B2 (en) * 2009-08-11 2012-12-11 Daimler Trucks North America Llc Marmon flange to spherical adapter
BR112012007072B1 (pt) * 2009-09-29 2020-12-01 Cummins Ip, Inc conjunto de tubo
EP2320116B1 (de) * 2009-11-10 2013-02-13 ElringKlinger AG Rohrleitungsverbindung
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US9926956B2 (en) * 2016-02-19 2018-03-27 Cummins Emission Solutions Inc. Dual purpose clamp for securing aftertreatment housing joints
EP3792463B1 (de) * 2019-09-16 2023-05-31 Roth Technik Austria Gesellschaft Mit Beschränkter Haftung Abgasnachbehandlungsvorrichtung mit durch lösen einer zerstörungsfrei lösbaren verbindung auswechselbaren abgasnachbgehandlungseinrichtungen

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Also Published As

Publication number Publication date
CN113107659A (zh) 2021-07-13
EP3851649A1 (de) 2021-07-21
US20210215087A1 (en) 2021-07-15
CN113107659B (zh) 2023-07-07
US11268432B2 (en) 2022-03-08
DE102020100285A1 (de) 2021-07-15

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