EP3702592A1 - Structure de logement du convertisseur des gaz d'échappement - Google Patents

Structure de logement du convertisseur des gaz d'échappement Download PDF

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Publication number
EP3702592A1
EP3702592A1 EP20156210.5A EP20156210A EP3702592A1 EP 3702592 A1 EP3702592 A1 EP 3702592A1 EP 20156210 A EP20156210 A EP 20156210A EP 3702592 A1 EP3702592 A1 EP 3702592A1
Authority
EP
European Patent Office
Prior art keywords
connection
exhaust gas
extending
base body
connection point
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
EP20156210.5A
Other languages
German (de)
English (en)
Other versions
EP3702592B1 (fr
Inventor
Holger BRENNER
Oleksander VYELYAYEV
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
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Publication of EP3702592A1 publication Critical patent/EP3702592A1/fr
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Publication of EP3702592B1 publication Critical patent/EP3702592B1/fr
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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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
    • 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
    • F01N13/1872—Construction facilitating manufacture, assembly, or disassembly the assembly using stamp-formed parts or otherwise deformed sheet-metal
    • 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
    • F01N2450/20—Methods or apparatus for fitting, inserting or repairing different elements by mechanical joints, e.g. 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
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/24—Methods or apparatus for fitting, inserting or repairing different elements by 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
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/10—Tubes having non-circular cross section

Definitions

  • the present invention relates to a case structure for an exhaust gas converter (hereinafter referred to as "exhaust gas converter case structure").
  • Exhaust gas converters are used to convert harmful components in the exhaust gas from vehicles operated by internal combustion engines into less harmful or harmless components.
  • Typical exhaust gas converters are exhaust gas catalytic converters, such as a three-way catalytic converter for converting carbon monoxide (CO), nitrogen oxide (NOx) and unburned hydrocarbons (HC) to carbon dioxide (CO2), nitrogen (N2) and water (H2O), a NOx Storage catalytic converter, a DeNOx catalytic converter or an SCR (selective catalytic reaction) catalytic converter.
  • Particle filters are also intended to be included in the term exhaust gas converter.
  • the exhaust gas converter is usually a substrate traversed by exhaust gas ducts, which is arranged in a housing structure.
  • the housing structure usually has a base body in which the substrate is arranged.
  • a storage mat is provided between the substrate and the base body.
  • the mounting mat surrounds the substrate at least in sections and thus fills a gap existing between the base body and the substrate. In this way, the storage mat determines the position of the substrate in the interior of the base body.
  • the housing structure usually has an inlet structure for exhaust gas and an outlet structure for exhaust gas, between which the base body is arranged.
  • the geometry of the inlet structure and the outlet structure is regularly selected so that they allow an exhaust gas flow as evenly as possible over the Inner cross-sectional area of the base body distributed so that the substrate is evenly flowed through by exhaust gas.
  • the inlet structure and the outlet structure often have a connection for an exhaust pipe at their ends facing away from the base body.
  • the inlet structure and / or the outlet structure are often only connected to the substrate after the substrate has been arranged in the main body.
  • the inlet structure and / or the outlet structure may be formed in one piece with the base body and to be formed therefrom, for example, by reshaping sections of the base body.
  • the process of arranging the substrate in the housing structure is also referred to as "canning".
  • the aim of canning is to position the substrate reliably inside the housing structure and avoid damaging the substrate.
  • the task is to avoid the above disadvantages and to provide a housing structure for exhaust gas converters, which is required when there is little need of installation space allows a distribution of the exhaust gas flow over the inner cross-section to be uniform and a risk of corrosion to be reduced.
  • Embodiments of an exhaust gas converter housing structure have a base body, an inlet structure and an outlet structure.
  • the base body is designed to accommodate an exhaust gas converter and is arranged between the inlet structure and the outlet structure.
  • the inlet structure and the main body are in engagement with one another at a first connection point.
  • “being in engagement” means that the inlet structure and the base body abut one another at the first connection point and / or are plugged into one another.
  • the inlet structure and the base body have connection geometries that match one another at the first connection point.
  • “mutually matching connection geometries” means that the connection geometries allow the inlet structure and the base body to rest against one another largely without any gaps.
  • “mutually matching connection geometries” means that the connection geometries are complementary to one another. Furthermore, the outlet structure and the base body are in engagement with one another at a second connection point, for which purpose the outlet structure and the base body have matching connection geometries at the second connection point.
  • “engaged” means that the outlet structure and the base body abut one another at the second connection point and / or are plugged into one another
  • “mutually matching connection geometries” means that the connection geometries rest against the outlet structure and are largely gap-free allow the main body to each other.
  • connection geometries of the inlet structure and of the base body at the first connection point are each individually asymmetrical or mirror-symmetrical to precisely one single plane of symmetry.
  • connection geometries of the outlet structure and of the base body at the second connection point are each individually asymmetrical or mirror-symmetrical to precisely one single plane of symmetry.
  • connection geometry is “asymmetrical” if it does not have any symmetry in the geometric sense.
  • connection geometries are chosen so that a largely gap-free connection between the inlet structure and the base body or outlet structure is only possible in a single angular position and base body is possible and / or the inlet structure can only be connected to the base body at a defined end of the base body and the outlet structure only on the other end of the base body, largely without gaps.
  • largely gap-free means that a remaining gap can be permanently closed in a gas-tight manner using conventional means (e.g. welding, soldering, crimping or gluing).
  • the connection between the base body and the inlet structure and / or the outlet structure is only possible with a defined angular position:
  • the defined angular position ensures reproducible distribution and guidance of the exhaust gas flow over the inner cross-section of the base body. This is important insofar as the inlet structure and / or outlet structure often does not have any rotational symmetry.
  • the defined angular position makes it possible to ensure that the exhaust gas converter housing structure is oriented after it has been installed on the underbody of a vehicle, that there is no accumulation of corrosive condensate or reducing agent in areas particularly at risk of corrosion (such as weld seams oriented in the longitudinal direction of the base body).
  • the strength of the exhaust gas converter housing structure and its behavior in the event of an accident can also be optimized and made reproducible in this way.
  • the defined angular position also allows a fixed angular relationship between the inlet structure and / or outlet structure and an exhaust gas converter received by the base body and / or a mounting mat surrounding the exhaust gas converter.
  • an overlap of a joint on the mounting mat with a weld seam oriented in the longitudinal direction of the base body can be avoided.
  • Complex recording of the weld seam oriented in the longitudinal direction of the base body by means of a camera system, as is often done, can then be dispensed with
  • the inlet structure can only be attached to a defined end of the base body and the outlet structure can only be attached to the other end of the base body, it is also ensured that an exhaust gas converter accommodated by the base body is in its correct flow direction from via the inlet -Structure flowing through the exhaust gas.
  • connection geometry of the inlet structure at the first connection point and / or the connection geometry of the outlet structure at the second connection point has at least one projection extending towards the base body or a recess extending away from the base body and / or at least one projection away to the base body extending groove and / or at least one protrusion extending outside the exhaust gas converter housing structure or a recess extending inside the exhaust gas converter housing structure and / or at least one bore.
  • the connection geometry of the base body at the first connection point has at least one projection extending towards the inlet structure or a recess extending away from the inlet structure and / or at least one groove extending away from the inlet structure.
  • connection geometry of the base body at the second connection point has at least one projection extending towards the outlet structure or a recess extending away from the outlet structure and / or at least one groove extending away from the outlet structure.
  • connection geometry of the base body at the first and / or second connection point has at least one projection extending outside the exhaust gas converter housing structure and / or a recess extending inside the exhaust gas converter housing structure and / or at least one bore.
  • connection geometries in this way it is possible to provide the desired asymmetry of the connection geometries in a cost-effective manner. In this way, it is even possible in a cost-effective manner to provide such a large number of different connection geometries that only certain inlet structures can be connected to certain basic bodies and / or only certain outlet structures can be connected to certain basic bodies and / or while maintaining predetermined angular relationships.
  • connection geometry of the inlet structure at the first connection point has at least one projection extending outside the exhaust gas converter housing structure
  • connection geometry of the base body at the first connection point has at least one groove extending away from the inlet structure
  • connection geometry of the outlet structure at the second connection point has at least one projection extending outside of the exhaust gas converter housing structure and has the connection geometry of the Base body at the second connection point on at least one groove extending away from the outlet structure.
  • the inlet structure and / or the outlet structure and the base body can then be adapted to one another in such a way that the inlet structure or the outlet structure can be pushed into the base body in the area of the first or second connection point in such a way that the Projection of the inlet structure or outlet structure is arranged in the groove in the base body, and otherwise it is not possible for the inlet structure and base body or outlet structure and base body to slide into one another.
  • connection geometry of the inlet structure at the first connection point has at least one groove extending away from the base body and the connection geometry of the base body at the first connection point has at least one protrusion extending outside the exhaust gas converter housing structure.
  • connection geometry of the outlet structure at the second connection point has at least one groove extending away from the base body and the connection geometry of the base body at the second connection point has at least one projection extending outside of the exhaust gas converter housing structure.
  • the inlet structure and / or the outlet structure and the base body can be adapted to one another in such a way that the base body can be pushed into the inlet structure or the outlet structure in the region of the first or second connection point in such a way that the Projection of the base body is arranged in the groove in the inlet structure or outlet structure, and otherwise the inlet structure and base body or outlet structure and base body cannot be pushed into one another.
  • the groove can, for example, also be an elongated hole which is open on one side and which completely penetrates a wall of the inlet structure, the outlet structure or the base body.
  • the base body is mirror-symmetrical or rotationally symmetrical.
  • the base body has a point-symmetrical or axially symmetrical or circular cross-sectional area or oval cross-sectional area at a distance from its connection geometries.In a base body shaped in this way, it is particularly difficult to connect the base body to the inlet structure or outlet structure at a certain angular position in a conventional manner .
  • the inlet structure and / or outlet structure is also free of rotational symmetry outside the connection geometry and / or the inlet structure and / or outlet structure has an asymmetrical cross-sectional area spaced from its connection geometry.
  • a connection to the base body while maintaining a predetermined angular relationship brings particular advantages.
  • the inlet structure and / or outlet structure it is alternatively also possible for the inlet structure and / or outlet structure to have a symmetry and in particular a rotational symmetry outside the connection geometry.
  • the exhaust gas converter housing structure also has a first and / or second exhaust gas line.
  • the first exhaust pipe is in engagement with the inlet structure at a third connection point, for which purpose the inlet structure and the first exhaust pipe have matching connection geometries at the third connection point.
  • the second exhaust pipe is in engagement with the outlet structure at a fourth connection point, for which purpose the outlet structure and the second exhaust pipe have mutually matching connection geometries at the fourth connection point.
  • the connection geometries of the inlet structure and the first exhaust line at the third connection point are each asymmetrical or mirror-symmetrical with respect to exactly one axis of symmetry.
  • Connection geometries of the outlet structure and the second exhaust line at the fourth connection point are each asymmetrical or mirror-symmetrical to exactly one axis of symmetry.
  • the first and / or second exhaust pipe is mirror-symmetrical or rotationally symmetrical, or the first and / or second exhaust pipe has a circular cross-sectional area or oval cross-sectional area.
  • the main body, the inlet structure, the outlet structure, the first exhaust pipe and the second exhaust pipe are bodies produced separately from one another.
  • the base body is made of metal, heat-resistant plastic or ceramic.
  • the base body is designed as a tube. If the tube is formed from a deformed strip of material, the tube usually has a seam oriented in the longitudinal direction of the pipe. The seam can be welded, soldered, flanged or glued. However, the tube can also be formed seamlessly.
  • the base body accommodates an exhaust gas converter in the form of a substrate.
  • the substrate can be, for example, a metal carrier or a ceramic carrier, through which channels, in particular, have a honeycomb-like structure.
  • the substrate can be a monolithic substrate.
  • the substrate can have two axial ends which are opposite in a gas flow direction in which exhaust gas to be cleaned flows through the substrate.
  • the exhaust gas converter accommodated by the base body furthermore has a storage mat arranged between the substrate and the base body.
  • the storage mat can for example be formed from wire mesh or another thermally stable and elastic material.
  • the storage mat can also provide thermal insulation between the substrate and the base body.
  • the inlet structure and / or the outlet structure is formed from sheet metal with or without a seam, from cast metal, heat-resistant plastic or ceramic.
  • the base body and / or the inlet structure and / or the outlet structure is provided with corrosion protection or is made entirely of corrosion-resistant material such as stainless steel.
  • FIG. 1A and 1B a first embodiment of an exhaust gas converter housing structure 1 is shown. It shows Figure 1A a not yet fully assembled condition and Figure 1B an assembled state.
  • the exhaust gas converter housing structure 1 has a funnel-shaped inlet structure 3, a funnel-shaped outlet structure 4 and a base body 2 arranged between the inlet structure 3 and the outlet structure 4.
  • the base body 2, the inlet structure 3 and the outlet structure 4 are each formed from stainless steel sheet with a wall thickness of 0.5 mm.
  • the base body 2 has a circular cross section, a diameter of 300 mm and a length of 450 mm. In its interior, the base body 2 receives a cylindrical substrate 50 to form an exhaust gas converter. A gap remaining between the substrate 50 and the inner wall of the base body 2 is largely filled by a mounting mat 55 made of high-temperature wool.
  • a largest inner diameter of the inlet structure 3 and the outlet structure 4 is slightly larger than the outer diameter of the base body 2.
  • the base body 2 can be separated from the inlet structure 3 and the outlet in sections in first and second connection areas V1, V2.
  • Structure 4 are included.
  • the connection geometries of the inlet structure 3, the outlet structure 4 and the base body 2 are therefore adapted to one another.
  • the base body 2 each has a radially outwardly protruding bolt-shaped projection 23.
  • the connection geometry of the base body 2 is not rotationally symmetrical in these areas, but rather mirror-symmetrical to precisely one plane of symmetry which centrally penetrates the base body 2 and the projections 23.
  • Outer walls of the inlet structure 3 and of the outlet structure 4 each have grooves 32, 42 in first and second connection areas V1, V2, which are oriented axially away from the base body 2 and are open towards the base body 2.
  • the width and length of the grooves 32, 42 are adapted to the size of the projections 23 such that each groove 32, 42 can receive a projection 23.
  • the inlet structure 3, the outlet structure 4 and the base body 2 must be rotated so that they are oriented in an angular position to one another predetermined by the position of the grooves 32, 42 and the position of the projections 23.
  • the base body 2 and the inlet structure 3 each have bores 25, 35 in the first connection area V1, which are aligned with one another after the base body 2 and the inlet structure 3 have been correctly assembled.
  • the base body 2 and the outlet structure 4 each have bores 25, 45 in the second connection area V2, which are aligned with one another after the base body 2 and the outlet structure 4 have been correctly assembled.
  • These bores can be used, for example, to accommodate screws and rivets, and thus connect the base body to the inlet structure or the outlet structure.
  • the inlet structure 3 and the outlet structure 4 can each be connected to first and second exhaust pipes 6, 7 at third and fourth connection points V3, V4.
  • the inlet structure 3 and the outlet structure 4 and the first and second exhaust lines 6, 7 at the third and fourth connection points V3, V4 are dimensioned in pairs such that the first exhaust line 6 is a section of the inlet structure 3 and the second Exhaust pipe 7 can encompass a section of the outlet structure 4.
  • the first and second exhaust pipes 6, 7 can be plugged onto the inlet structure 3 and the outlet structure 4.
  • the connection geometries of the inlet structure 3, the outlet structure 4 and the first and second exhaust pipes 6, 7 are thus matched to one another in pairs.
  • the inlet structure 3 and the first exhaust pipe 6 on the one hand and the outlet structure 4 and the second exhaust pipe 7 on the other hand at the third and fourth connection points V3, V4 have cross-sectional areas that differ and each not point symmetry but axis symmetry to exactly one Have axis of symmetry.
  • the first exhaust pipe 6 can be connected exclusively and in only one orientation to the inlet structure 3 and the second exhaust pipe 7 can be connected exclusively and in only one orientation to the outlet structure 4.
  • the first and second exhaust gas lines 6, 7 have a circular cross-sectional area and thus a point-symmetrical cross-sectional area.
  • connection between the first and second exhaust gas lines 6, 7 and the inlet or outlet structure 3, 4 can also have bores or projections oriented inwards or outwards in relation to the exhaust gas converter housing structure 1 and recesses and grooves, etc., as described above using the example of the connection of the inlet or outlet structure 3, 4 to the base body 2. It is crucial that the connection geometries in the connection area are selected so that a largely gap-free connection of the components is only possible in a single angular position.
  • the cross-sectional areas of the inlet or outlet structure 3, 4 and of the base body 2 in the first and second connection area could also be selected asymmetrically so that, even if projections and recesses and grooves are dispensed with, a largely gap-free connection between them is only possible in a single angular position Components is possible.
  • the base body 2 ′ does not have any in the first and second connection areas V1, V2 Projections each have a pair of grooves 22, which are oriented in the axial direction of the base body 2 'and are open towards the inlet or outlet structure 3', 4 '.
  • the grooves 22 in the first connection area V1 are spaced apart in the circumferential direction of the base body 2 'by a first distance A1 which is smaller than a second distance A2 by which the grooves 22 in the second connection area V2 are spaced apart from one another in the circumferential direction of the base body 2'.
  • the inlet structure 3 'and the outlet structure 4' in the first and second connection areas V1, V2 have bolt-shaped projections 34, 44 protruding into the interior of the exhaust gas converter housing structure 1 'instead of the grooves.
  • the distance between the bolt-shaped projections 34 on the inlet structure 3 ' corresponds to the first distance A1 of the grooves 22 in the base body 2' in the first connection area V1
  • the distance between the bolt-shaped projections 44 on the outlet structure 4 ' corresponds to the second distance A2 of the grooves 22 in the base body 2 'in the second connecting area V2.
  • connection geometries of the inlet structure 3 ', the outlet structure 4' and the base body 2 'in the first and second connection areas V1, V2 are thus also adapted to one another in pairs and are not rotationally symmetrical in each case.
  • an assembly of inlet structure 3 'and base body 2' as well as of outlet structure 4 'and base body 2' is only possible here under an angular position defined by the position of grooves 22 and projections 34, 44.
  • the different distances A1, A2 between the grooves 22 and the projections 34, 44 ensure that the inlet structure 3 'and the outlet structure 4' can each only be mounted on a fixed end of the base body 2 '.
  • the base body is encompassed by the inlet structure and the outlet structure in the first and second connection area, it is alternatively also possible to design these components in such a way that both the inlet structure and the outlet -Structure or just one of these components in the first and second connection area from Base body is gripped. Accordingly, it is possible to vary the number, arrangement and orientation of the bolt-shaped projections and grooves as desired.
  • the inlet structure 3 ′′, the outlet structure 4 ′′ and the base body 2 ′′ can be plugged into one another. Rather, the end faces of these components abut one another during assembly.
  • connection geometries in the first and second connection areas V1, V2 are selected such that assembly is largely gap-free only with a predetermined angular position of the components to one another.
  • the inlet structure 3 ′′ in the first connection area V1 has a projection 31 oriented in the direction of the base body 2 ′′ and the base body 2 ′′ in the first connection area V1 has a corresponding recess 22 oriented away from the inlet structure 3 ′′ .
  • the base body 2 ′′ has a projection 21 oriented in the direction of the outlet structure 4 ′′ and the outlet structure 4 ′′ has a corresponding recess 42 oriented away from the base body 2 ′′.
  • the projections 21, 31 and recesses 22, 42 are configured differently in pairs. As a result, it is ensured that the inlet structure 3 ′′ and the outlet structure 4 ′′ can each only be mounted on a fixed end of the base body 2 ′′.
  • the first exhaust line 6 and the inlet structure 3 * in the third connection area V3 each have a circular cross-sectional area.
  • the first exhaust pipe 6 and the inlet structure 3 * cannot be plugged into one another; rather, their end faces abut one another during assembly.
  • these end faces are provided with projections 36, 61 and recesses 37, 62, as a result of which the connection geometries do not have any symmetry.
  • the second exhaust line can be connected to the outlet structure in the fourth connection area accordingly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Exhaust Silencers (AREA)
EP20156210.5A 2019-02-27 2020-02-07 Structure d'un boitier d'un convertisseur Active EP3702592B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019104940.7A DE102019104940A1 (de) 2019-02-27 2019-02-27 Abgaskonverter-Gehäusestruktur

Publications (2)

Publication Number Publication Date
EP3702592A1 true EP3702592A1 (fr) 2020-09-02
EP3702592B1 EP3702592B1 (fr) 2021-10-27

Family

ID=69528628

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20156210.5A Active EP3702592B1 (fr) 2019-02-27 2020-02-07 Structure d'un boitier d'un convertisseur

Country Status (4)

Country Link
US (1) US20200271034A1 (fr)
EP (1) EP3702592B1 (fr)
JP (1) JP2020139501A (fr)
DE (1) DE102019104940A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1903852A (en) * 1929-10-05 1933-04-18 Pete D Renfro Pipe joint
US2500720A (en) * 1947-03-12 1950-03-14 Heem Jan Van Der Pipe connection
US4475623A (en) * 1982-09-20 1984-10-09 Apx Group, Inc. Universal muffler assembly
GB2251046A (en) * 1990-12-20 1992-06-24 Robert Graham Straghan Snap fit pipe coupling with angular alignment
US20030020279A1 (en) * 2001-07-25 2003-01-30 Houtschilt Robert Walter Exhaust system clamp assembly and associated method
EP3085913A1 (fr) * 2015-04-22 2016-10-26 Faurecia Systèmes d'Echappement Dispositif de purification des gaz d'échappement, ligne d'échappement comprenant un tel dispositif
DE112008000643B4 (de) * 2007-03-13 2018-08-09 Cummins Filtration Ip, Inc. System und Verfahren zum Erleichtern der fachgerechten Montage einer Abgasanlage

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51122211U (fr) * 1975-03-31 1976-10-04
JPS6158793U (fr) * 1984-09-25 1986-04-19
DE3831616A1 (de) * 1988-09-17 1990-03-22 Sueddeutsche Kuehler Behr Verfahren zur herstellung von traegerkoerpern fuer katalytische reaktoren zur abgasreinigung
DE3929205A1 (de) * 1989-09-02 1991-03-21 Leistritz Ag Abgasvorrichtung, insbes. abgasreinigungsvorrichtung
US7238327B2 (en) * 2002-12-10 2007-07-03 Automotive Components Holdings, Llc Method of attaching internal heat shield in automotive catalytic converters
EP2336517B1 (fr) * 2008-09-08 2016-11-09 Hitachi Construction Machinery Co., Ltd Dispositif de traitement de gaz d'échappement
DE102008051870A1 (de) * 2008-10-16 2010-04-22 Albonair Gmbh Filterelement
JP5890661B2 (ja) * 2011-11-16 2016-03-22 日野自動車株式会社 排気浄化装置
JP6756627B2 (ja) * 2017-01-17 2020-09-16 フタバ産業株式会社 フランジの締結構造

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1903852A (en) * 1929-10-05 1933-04-18 Pete D Renfro Pipe joint
US2500720A (en) * 1947-03-12 1950-03-14 Heem Jan Van Der Pipe connection
US4475623A (en) * 1982-09-20 1984-10-09 Apx Group, Inc. Universal muffler assembly
GB2251046A (en) * 1990-12-20 1992-06-24 Robert Graham Straghan Snap fit pipe coupling with angular alignment
US20030020279A1 (en) * 2001-07-25 2003-01-30 Houtschilt Robert Walter Exhaust system clamp assembly and associated method
DE112008000643B4 (de) * 2007-03-13 2018-08-09 Cummins Filtration Ip, Inc. System und Verfahren zum Erleichtern der fachgerechten Montage einer Abgasanlage
EP3085913A1 (fr) * 2015-04-22 2016-10-26 Faurecia Systèmes d'Echappement Dispositif de purification des gaz d'échappement, ligne d'échappement comprenant un tel dispositif

Also Published As

Publication number Publication date
DE102019104940A1 (de) 2020-08-27
JP2020139501A (ja) 2020-09-03
EP3702592B1 (fr) 2021-10-27
US20200271034A1 (en) 2020-08-27

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