Exhaust system component

{
  "publication_number": "US10619540B2",
  "country": "US",
  "kind": "B2",
  "title": "Exhaust system component",
  "abstract": "An exhaust system component for an exhaust system of an internal combustion engine of a motor vehicle comprises a substrate which is held in a substantially cylindrical housing. The cylindrical housing has a housing jacket which comprises a metal sheet bent about a cylinder axis. The ends of the metal sheet oriented in the circumferential direction relative to the cylinder axis form a joint connected with a weld seam. The weld seam is spaced apart from an inner surface of the housing jacket and the ends each have a bevel at least in sections.",
  "claims": [
    "1. An exhaust system component, in particular catalytic converter or particle filter, for an exhaust system of an internal combustion engine of a motor vehicle comprising: a substrate which is held in a substantially cylindrical housing, wherein the cylindrical housing has a housing jacket which comprises a metal sheet bent about a cylinder axis, and wherein ends of the metal sheet oriented in a circumferential direction relative to the cylinder axis form a joint connected with a weld seam; and wherein the weld seam extends over less than 90% of a thickness of the metal sheet and wherein the weld seam is spaced apart from an inner surface of the housing jacket and the ends each have a bevel or stepped shape at least in sections, wherein the bevels or stepped shapes face each other within the joint.",
    "2. The exhaust system component of claim 1 wherein, viewed in an axial direction, a joint contour of one of the ends is a negative contour of a joint contour of the respective other end.",
    "3. The exhaust system component of claim 1 wherein each of the bevels forms an angle of at least 5°, preferably of at least 10 and further preferably of at least 20°, with a radial plane of the housing jacket.",
    "4. The exhaust system component of claim 1 wherein the bevels are chamfers oriented in opposition and running over an entire thickness of the metal sheet.",
    "5. The exhaust system component of claim 1 wherein one of the bevels is a chamfer running over only a part of a thickness of the metal sheet.",
    "6. The exhaust system component of claim 5 wherein the bevel facing the bevel formed as a chamfer is arranged on a metal sheet extension, in particular wherein a radial thickness of the metal sheet extension corresponds substantially to a radial height of the chamfer.",
    "7. The exhaust system component of claim 1 wherein the stepped shapes are laser eroded.",
    "8. The exhaust system component of claim 1 wherein the weld seam is a laser weld seam, in particular wherein the weld seam runs substantially over an entire axial length of the housing jacket.",
    "9. The exhaust system component of claim 1 wherein the substrate is mounted on the housing jacket via a mounting mat, in particular wherein the mounting mat rests substantially flat against both the substrate and the housing jacket.",
    "10. The exhaust system component of claim 9 wherein the mounting mat rests against the substrate interlayer-free, in particular binder-free.",
    "11. The exhaust system component of claim 9 wherein, in a dimension corresponding to a housing jacket circumference, the metal sheet of the housing jacket is individually adapted to the mounting mat, in particular is individually adapted to a weight and/or a weight per unit area of the mounting mat.",
    "12. The exhaust system component of claim 1 wherein, in a radial direction, the housing jacket has a substantially constant thickness, in particular wherein the constant thickness corresponds to a sheet thickness.",
    "13. The exhaust system component of claim 1 wherein, in an area resting against an axial end of the housing jacket, the weld seam runs inclined with respect to the cylinder axis and/or, in a central area spaced apart from the axial ends of the housing jacket, runs substantially along the cylinder axis.",
    "14. The exhaust system component of claim 1 wherein, at least in a central area, the weld seam runs at an angle different from 0°, relative to an axial direction.",
    "15. The exhaust system component of claim 1 wherein, in a dimension corresponding to a housing jacket circumference, the metal sheet of the housing jacket is individually adapted to the substrate.",
    "16. The exhaust system component of claim 1 wherein the substrate is held in the cylindrical housing substantially by a radial compression force originating from the housing jacket.",
    "17. The exhaust system component of claim 1 wherein the weld seam extends from an upstream end to a downstream end of the housing jacket.",
    "18. The exhaust system component of claim 17 wherein at least one portion of the weld seam runs parallel to the cylinder axis.",
    "19. The exhaust system component of claim 17 wherein at least one portion of the weld seam runs non-parallel to the cylinder axis.",
    "20. The exhaust system component of claim 17 wherein the weld seam is wave-shaped."
  ],
  "description_excerpt": "The invention relates to an exhaust system component, in particular a catalytic converter or a particle filter, for an exhaust system of an internal combustion engine of a motor vehicle.\n\nConventional exhaust system components, in particular a catalytic converter or a particle filter, for an exhaust system of an internal combustion engine of a motor vehicle have a substrate which is held in a substantially cylindrical housing. The housing has a housing jacket which comprises a metal sheet bent about a cylinder axis, the ends of which oriented in the circumferential direction relative to the cylinder axis form a joint connected with a weld seam.\n\nIn this connection, by the term “cylindrical” it is meant that the housing has the shape of a general cylinder. A footprint or cross-section of the cylinder can therefore be circular, but does not have to be. In the same way, cylindrical housings with elliptical, four-cornered, e.g. rectangular, footprints or footprints of any shape are also meant.\n\nSuch an exhaust system component is known, for example, from DE 10 2005 029 163 A1. There, the two ends oriented in the circumferential direction are arranged in a lap joint and welded together. A mechanically stable and fluid-tight housing thus forms.\n\nThe lap joint leads to a section of metal sheet always lying between the weld seam and the substrate or other materials arranged within the housing. Damage to the substrate as well as to the other materials is thus effectively prevented during the production of the weld seam.",
  "cpc": [
    "F01N 3/0222",
    "B01D 2265/04",
    "B01D 2279/30",
    "B01D 46/0005",
    "B01D 53/94",
    "B21C 37/08",
    "B21C 37/0826",
    "B23K 2101/006",
    "B23K 2101/06",
    "B23K 2101/12",
    "B23K 2103/05",
    "B23K 26/242",
    "B23K 26/262",
    "B23K 26/32",
    "B23K 33/006",
    "B23K 33/008",
    "B23K 9/0253",
    "F01N 13/18",
    "F01N 13/1877",
    "F01N 13/1888",
    "F01N 2330/04",
    "F01N 2450/02",
    "F01N 2450/22",
    "F01N 3/0211",
    "F01N 3/2842",
    "F01N 3/2853",
    "Y02A 50/20"
  ],
  "ipc": [
    "B01D 46/00",
    "B01D 53/94",
    "B23K 26/262",
    "F01N 13/18",
    "F01N 3/022",
    "F01N 3/28",
    "B21C 37/08",
    "B23K 26/242",
    "B23K 26/32",
    "B23K 33/00"
  ],
  "assignees": [
    "Faurecia Emissions Control Technologies Germany GmbH"
  ],
  "inventors": [
    "Alfred Blueml"
  ],
  "filing_date": "2019-03-20",
  "publication_date": "2020-04-14",
  "grant_date": "2020-04-14",
  "priority_date": "2018-03-22",
  "application_number": "US-201916358784-A",
  "family_id": "65818342",
  "cited_by_count": 2,
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  ]
}