CONNECTION PIECE ASSEMBLY UNIT, ESPECIALLY FOR AN EXHAUST GAS TREATMENT DEVICE OF AN EXHAUST SYSTEM OF AN INTERNAL COMBUSTION ENGINE

• US 20180023451A1
• Filed: 07/17/2017
• Published: 01/25/2018
• Est. Priority Date: 07/19/2016
• Status: Active Grant

• Current Assignee: Purem GmbH Formerly Eberspacher Exhaust Technology Gesellschaft mbH
• Original Assignee: Eberspacher Exhaust Technology GmbH & Co. KG (Eberspächer Gruppe GmbH & Co. KG)
• Inventors: LIU, Dan, KAST, Peter
• Granted Patent: US 10,371,038 B2
• Time in Patent Office: Days
• CPC Class Codes: F01N 13/008 Mounting or arrangement of exhaust sensors in or on exhaust apparatus sensor arrangements for engine control F02D41/1439
• CPC Class Codes: F01N 13/08 Other arrangements or adaptations of exhaust conduits pipes, joints or supports therefor in general F16L; collecting or removing exhaust gases of vehicle engines in workshops B08B15/00, on highways E01C1/005
• CPC Class Codes: F01N 13/102 having thermal insulation
• CPC Class Codes: F01N 13/14 having thermal insulation exhaust manifolds F01N13/102
• CPC Class Codes: F01N 13/141 Double-walled exhaust pipes or housings
• CPC Class Codes: F01N 13/148 Multiple layers of insulating material
• CPC Class Codes: F01N 13/1805 Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body pipe joints in general F16L; fixing auxiliaries in motor vehicles in general B60K
• CPC Class Codes: F01N 2260/20 for heat or sound protection, e.g. using a shield or specially shaped outer surface of exhaust device
• CPC Class Codes: F01N 2310/00 Selection of sound absorbing or insulating material
• CPC Class Codes: F01N 2450/22 by welding or brazing
• CPC Class Codes: F01N 2450/24 by bolts, screws, rivets or the like
• CPC Class Codes: F01N 2510/02 for thermal insulation
• CPC Class Codes: F01N 2530/26 Multi-layered walls
• CPC Class Codes: F01N 2560/00 Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
• CPC Class Codes: F01N 3/021 by means of filters
• CPC Class Codes: F01N 3/10 by thermal or catalytic conversion of noxious components of exhaust by using other chemical processes, chemical aspects of catalytic conversion, e.g. using specified catalysts, B01D53/34
• CPC Class Codes: F16L 41/008 for connecting a measuring instrument connecting means for pressure measuring apparatus G01L19/0007

Abstract

A connection piece assembly unit, especially for an exhaust gas treatment device of an exhaust system of an internal combustion engine, includes a connection piece (30) with a base area (32) for fixing the connection piece (30) to a carrier assembly unit. A covering element (40) projects over an outside (42) of the connection piece (30).

Claims

1. An exhaust gas treatment device connection piece assembly unit for an exhaust gas treatment device of an exhaust system of an internal combustion engine, the connection piece assembly unit comprising:

a connection piece with a base area for fixing the connection piece to a carrier assembly unit of the exhaust gas treatment device;

a covering element protruding over an outside of the connection piece.

2. An exhaust gas treatment device connection piece assembly unit in accordance with claim 1, wherein the covering element has a fastening area for fixing the covering element to the connection piece.

3. An exhaust gas treatment device connection piece assembly unit in accordance with claim 2, wherein the covering element further comprises:

an overlapping area extending, starting from the fastening area, in a direction away from the connection piece;

or

a shielding area extending in a direction towards the base area;

or

an overlapping area extending, starting from the fastening area, in a direction away from the connection piece and a shielding area extending in a direction towards the base area.

4. An exhaust gas treatment device connection piece assembly unit in accordance with claim 3, wherein:

wherein the covering element further comprises;

an overlapping area extending, starting from the fastening area, in a direction away from the connection piece; and

a shielding area extending in a direction towards the base area, wherein the shielding area extends, starting from the overlapping area, a distance from the fastening area.

5. An exhaust gas treatment device connection piece assembly unit in accordance with claim 2, wherein the fastening area comprises a sleeve-shaped configuration and overlaps the connection piece on an outside of the connection piece.

6. An exhaust gas treatment device connection piece assembly unit in accordance with claim 5, wherein:

the fastening area is configured with an internal thread formation;

the connection piece is configured with an external thread formation provided on an outside of the connection piece; and

the internal thread formation of the fastening area fasteningly meshes with the external thread formation on the outside of the connection piece.

7. An exhaust gas treatment device connection piece assembly unit in accordance with claim 2, wherein the fastening area has a ring washer-shaped configuration.

8. An exhaust gas treatment device connection piece assembly unit in accordance with claim 1, wherein the covering element is fixed to the connection piece by a connection in substance comprising welding, soldering or bonding.

9. An exhaust gas treatment device connection piece assembly unit in accordance with claim 1, wherein the connection piece has a connection piece opening configured with an internal thread formation for receiving an assembly unit to be carried at the connection piece, the assembly unit being at least one of a measuring probe and a tool meshing formation with an external polygon, provided at the covering element.

10. An exhaust gas treatment device for an exhaust system of an internal combustion engine, the exhaust gas treatment device comprising:

a device housing;

a covering device overlapping, in at least some areas, the device housing on an outside of the device housing;

at least one connection piece assembly unit comprising;

a connection piece with a base area for fixing the connection piece to a carrier assembly unit of the exhaust gas treatment device; and

a covering element protruding over an outside of the connection piece, wherein the connection piece of at least one connection piece assembly unit is fixed to the device housing in a mounting area of the device housing, which mounting area is not overlapped by the covering device and the covering element of the connection piece assembly unit overlaps the covering device, in at least some areas of an edge area adjacent to the mounting area.

11. An exhaust gas treatment device in accordance with claim 10, wherein the covering device comprises:

at least one layer of covering material overlapping the device housing on an outside of the device housing in at least some areas; and

at least one layer of protective material overlapping the at least one layer of covering material in at least some areas on a side facing away from the outside of the device housing;

the at least one layer of protective material, in the edge area of the covering device, which edge area is adjacent to the mounting area, extends with an edge section beyond at least one layer of covering material towards the connection piece and in a direction away from the outside of the device housing.

12. An exhaust gas treatment device in accordance with claim 11, wherein:

in at least one connection piece assembly unit, the covering element overlaps the edge section in the direction away from the connection piece or

in at least one connection piece assembly unit, the covering element overlaps the edge section in the direction towards the outside of the device housing on a side facing away from the connection piece;

or

in at least one connection piece assembly unit, the covering element overlaps the edge section in the direction away from the connection piece and overlaps the edge section in the direction towards the outside of the device housing on a side facing away from the connection piece.

13. An exhaust gas treatment device in accordance with claim 10, wherein in the at least one connection piece assembly unit, the covering element is not in contact with the covering device.

14. An exhaust gas treatment device in accordance with claim 10, wherein the at least one connection piece assembly unit has the fastening area of the covering element held between the connection piece and an assembly unit carried on the connection piece.

15. An exhaust gas treatment device in accordance with claim 10, wherein:

the at least one connection piece assembly unit has the connection piece fixed with a base area to the device housing by a connection in substance comprising welding or soldering;

or

the at least one layer of covering material is composed of fiber material comprising ceramic fiber material;

or

the at least one layer of protective material is composed of sheet metal material;

or

any combination of the covering device has a hole-like opening in at least one mounting area, and the at least one connection piece assembly unit has the connection piece fixed with a base area to the device housing by a connection in substance comprising welding or soldering, and the at least one layer of covering material is composed of fiber material comprising ceramic fiber material, and the at least one layer of protective material is composed of sheet metal material, and the covering device has a hole-like opening in at least one mounting area.

16. An exhaust gas treatment device in accordance with claim 10, wherein the covering element has a fastening area for fixing the covering element to the connection piece.

17. An exhaust gas treatment device in accordance with claim 16, wherein the covering element further comprises:

an overlapping area extending, starting from the fastening area, in a direction away from the connection piece;

or

a shielding area extending in a direction towards the base area;

or

an overlapping area extending, starting from the fastening area, in a direction away from the connection piece and a shielding area extending in a direction towards the base area.

18. An exhaust gas treatment device in accordance with claim 17, wherein:

wherein the covering element further comprises;

an overlapping area extending, starting from the fastening area, in a direction away from the connection piece; and

a shielding area extending in a direction towards the base area, wherein the shielding area extends, starting from the overlapping area, a distance from the fastening area.

19. An exhaust gas treatment device in accordance with claim 17, wherein the fastening area comprises a sleeve-shaped configuration and overlaps the connection piece on an outside of the connection piece.

20. An exhaust gas treatment device in accordance with claim 19, wherein:

the fastening area is configured with an internal thread formation;

the connection piece is configured with an external thread formation provided on an outside of the connection piece; and

the internal thread formation of the fastening area fasteningly meshes with the external thread formation on the outside of the connection piece.