# US 2019/0170611 A1 · Housing connection element > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0170611 A1 - Document ID: US20190170611A1 - Status: Published application - Kind: A1 - Application number: 16/205,853 - Filed: 2018-11-30 - Published: 2019-06-06 - Earliest claimed: 2017-12-01 - Assignees: Eberspächer Exhaust Technology GmbH & Co. KG - Applicants: Eberspächer Exhaust Technology GmbH & Co. KG - Inventors: Matthias SCHEER; Christoph BUCKERMANN - Web page: https://patentgrep.com/patent/US20190170611A1 ## CPC - G01M 15/02: Details or accessories of testing apparatus - F01N 13/008: {Mounting or arrangement of exhaust sensors in or on exhaust apparatus (sensor arrangements for engine control F02D41/1439)} - F01N 13/16: Selection of particular materials - F01N 13/18: Construction facilitating manufacture, assembly, or disassembly - 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)} - F01N 13/185: {the connection being realised by deforming housing, tube, baffle, plate, or parts thereof} - F01N 13/1861: {the assembly using parts formed by casting or moulding} - F01N 13/1872: {the assembly using stamp-formed parts or otherwise deformed sheet-metal} - F01N 13/1894: {the parts being assembled in longitudinal direction} - G01M 15/102: {by monitoring exhaust gases} - F01N 2450/22: by welding or brazing - F01N 2530/02: Corrosion resistive metals - G01M: TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR - F01N: GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES (arrangements in connection with gas exhaust of propulsion units in vehicles B60K13/00; combustion-air intake silencers specially adapted for, or arranged on, internal-combustion engines F02M35/00; protecting against, or damping, noise in general G10K11/16) ## Abstract A housing connection element (10) for a housing of an exhaust gas treatment assembly unit of an exhaust system, especially for an internal combustion engine, includes a first housing part (16) with an essentially cylindrical first connection area (18) for connection to a circumferential wall (14) of a housing (12) of an exhaust gas treatment assembly unit. A tapered area (20) is adjacent to the first connection area (18). An annular, second housing part (40) is connected to the tapered area (20). A second connection area (46) is provided for connection to an exhaust gas-carrying component of an exhaust system. At least one sensor sleeve (48, 50) is in a sleeve receiving area (24) of the first housing part (16). The sleeve receiving area (24) is formed in the tapered area (20). ## Claims ### Claim 1 A housing connection element for a housing of an exhaust gas treatment assembly unit of an exhaust system for an internal combustion engine, the housing connection element comprising: a first housing part comprising an essentially cylindrical first connection area for connection to a circumferential wall of a housing of an exhaust gas treatment assembly unit and a tapered area adjacent to the first connection area; an annular, second housing part, the second housing part being connected to the tapered area, the second housing part comprising a second connection area for connection to an exhaust gas-carrying component of an exhaust system; and at least one sensor sleeve in a sleeve receiving area of the first housing part, the sleeve receiving area being formed in the tapered area. ### Claim 2 (depends on 1) A housing connection element in accordance with claim 1, wherein: the first housing part is configured as a shaped sheet metal part; or the second housing part is configured as a precision casting; or the second housing part is configured as a part that is machined by removing metal material by cutting; or the second housing part is configured as a precision casting and is machined by removing metal material by cutting; or any combination of the first housing part is configured as a shaped sheet metal part, the second housing part is configured as a precision casting, the second housing part is configured as a part that is machined by removing metal material by cutting, and the second housing part is configured as a precision casting and is machined by removing metal material by cutting. ### Claim 3 (depends on 1) A housing connection element in accordance with claim 1, wherein: the sleeve receiving area comprises a sleeve receiving surface area in a recessed area that is deformed inwardly with a sleeve receiving opening; and the sensor sleeve is received in the sleeve receiving opening. ### Claim 4 (depends on 1) A housing connection element in accordance with claim 1, wherein: the sleeve receiving area comprises a sleeve receiving surface area in a recessed area that is deformed inwardly with two sleeve receiving openings following one another in a circumferential direction in relation to a longitudinal central axis; and the sensor sleeve is received in the at least one of the sleeve receiving openings. ### Claim 5 (depends on 3) A housing connection element in accordance with claim 3, wherein an angle formed between the sleeve receiving surface area and the longitudinal central axis is smaller than an angle between an area of the tapered area, which said area is adjacent to the sleeve receiving area in the circumferential direction, and the longitudinal central axis. ### Claim 6 (depends on 1) A housing connection element in accordance with claim 1, wherein: the tapered area has an end area; a connection flange area, which is directed inwardly in relation to an exhaust gas passage opening formed in the end area of the tapered area, is provided in the end area of the tapered area; the second housing part has an annular body area; and the second housing part is connected to the connection flange area in the annular body area. ### Claim 7 (depends on 6) A housing connection element in accordance with claim 6, wherein the second connection area comprises a connection flange protruding in an outward direction from the annular body area of the second housing part. ### Claim 8 (depends on 1) A housing connection element in accordance with claim 1, wherein: the second housing part is connected to the first housing part by laser welding; or the at least one sensor sleeve is connected to the first housing part by laser welding; or the second housing part is connected to the first housing part by laser welding and the at least one sensor sleeve is connected to the first housing part by laser welding. ### Claim 9 An exhaust gas treatment assembly unit comprising: a tubular circumferential wall; and a housing connection element at an end area of the circumferential wall, the housing connection element comprising: a first housing part comprising an essentially cylindrical first connection area for connection to a circumferential wall of a housing of an exhaust gas treatment assembly unit and a tapered area adjacent to the first connection area; an annular, second housing part, the second housing part being connected to the tapered area, the second housing part comprising a second connection area for connection to an exhaust gas-carrying component of an exhaust system; and at least one sensor sleeve in a sleeve receiving area of the first housing part, the sleeve receiving area being formed in the tapered area. ### Claim 10 (depends on 9) An exhaust gas treatment assembly unit in accordance with claim 9, wherein: the first housing part is configured as a shaped sheet metal part; or the second housing part is configured as a precision casting; or the second housing part is configured as a part that is machined by removing metal material by cutting; or the second housing part is configured as a precision casting and is machined by removing metal material by cutting; or any combination of the first housing part is configured as a shaped sheet metal part, the second housing part is configured as a precision casting, the second housing part is configured as a part that is machined by removing metal material by cutting, and the second housing part is configured as a precision casting and is machined by removing metal material by cutting. ### Claim 11 (depends on 9) An exhaust gas treatment assembly unit in accordance with claim 9, wherein: the sleeve receiving area comprises a sleeve receiving surface area in a recessed area that is deformed inwardly with a sleeve receiving opening; and the sensor sleeve is received in the sleeve receiving opening. ### Claim 12 (depends on 11) An exhaust gas treatment assembly unit in accordance with claim 11, wherein an angle formed between the sleeve receiving surface area and the longitudinal central axis is smaller than an angle between an area of the tapered area, which said area is adjacent to the sleeve receiving area in the circumferential direction, and the longitudinal central axis. ### Claim 13 (depends on 9) An exhaust gas treatment assembly unit in accordance with claim 9, wherein: the tapered area has an end area; a connection flange area, which is directed inwardly in relation to an exhaust gas passage opening formed in the end area of the tapered area, is provided in the end area of the tapered area; the second housing part has an annular body area; and the second housing part is connected to the connection flange area in the annular body area. ### Claim 14 (depends on 13) An exhaust gas treatment assembly unit in accordance with claim 13, wherein the second connection area comprises a connection flange protruding in an outward direction from the annular body area of the second housing part. ### Claim 15 (depends on 9) An exhaust gas treatment assembly unit in accordance with claim 9, wherein: the second housing part is connected to the first housing part by laser welding; or the at least one sensor sleeve is connected to the first housing part by laser welding; or the second housing part is connected to the first housing part by laser welding and the at least one sensor sleeve is connected to the first housing part by laser welding. ### Claim 16 A process for the manufacture of a housing connection element comprising a first housing part comprising an essentially cylindrical first connection area for connection to a circumferential wall of a housing of an exhaust gas treatment assembly unit and a tapered area adjacent to the first connection area, an annular, second housing part, the second housing part being connected to the tapered area, the second housing part comprising a second connection area for connection to an exhaust gas-carrying component of an exhaust system, and at least one sensor sleeve in a sleeve receiving area of the first housing part, the sleeve receiving area being formed in the tapered area, the process comprising the steps of: providing the first housing part as a shaped sheet metal part with an exhaust gas passage opening in an end area of the tapered area and with at least one sleeve receiving opening in the sleeve receiving area; providing the second housing part; connecting the second housing part to the first housing part, in the area of the exhaust gas passage opening formed therein, by laser welding; and inserting a sensor sleeve into the at least one sleeve receiving opening and connection of the sensor sleeve to the first housing part by laser welding. ### Claim 17 (depends on 16) A process in accordance with claim 16, wherein the second housing part is provided as a precision casting. ### Claim 18 (depends on 16) A process in accordance with claim 16, wherein: the first housing part is provided in step in a deep-drawing/laser-cutting operation; a housing blank is formed in a deep-drawing operation from a plate-shaped sheet metal blank with the essentially cylindrical first connection area and with the tapered area with a recessed area for the sleeve receiving area; and the at least one sleeve receiving opening is formed in the recessed area in a subsequent laser-cutting operation. ### Claim 19 (depends on 18) A process in accordance with claim 18, wherein the exhaust gas passage opening is formed in the deep-drawing operation or in the laser-cutting operation. ### Claim 20 (depends on 19) A process in accordance with claim 19, wherein: a connection flange area surrounding the exhaust gas passage opening and directed inwards is formed during the formation of the exhaust gas passage opening; and an annular body area of the second housing part is connected to the connection flange area in the step of connecting the second housing part to the first housing part.