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US 9,856,775 B2Granted
Assembly unit of an exhaust system composed of components made of different materials with improved durability
AssigneeEberspächer Exhaust Technology GmbH & Co. KG
InventorPhilippe Leisten
Life of this patent
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Abstract
An assembly unit 1 of an exhaust system has at least one and particularly two connection funnels 2 made of cast material and a pipe 3. The at least one connection funnel 2 has a pipe socket 21 and at least one bracket 22. The bracket 22 is arranged outside of the pipe socket 21. A connection section 31 of the pipe 3 is fastened to the bracket 22 of the at least one connection funnel. The pipe socket 21 extends beyond the connection section 31 of the pipe 3 into the interior of the pipe 3 and is spaced apart from an inner wall of the pipe 3 by at least the simple wall thickness of the pipe 3.
Claims13
An exhaust catalyst comprising:
- a first end connection funnel made of casted material, the first end connection funnel comprising a first end pipe socket having a ring-shaped cross section and a first end bracket having a ring-shaped cross section arranged radially an outer side of the first end pipe socket;
- a pipe having a first end connection section fastened to the first end bracket of the first end connection funnel,
- wherein the first end pipe socket extends beyond the first end connection section of the pipe into an interior of the pipe, wherein a first end connection between the first end connection section of the pipe and the first end bracket of the first end connection funnel is established by a weld seam or a soldered seam,
- wherein an exhaust gas which is guided in the pipe, can penetrate a first space formed between the outer side of the first end pipe socket and an inner side of the first end bracket and between the outer side of the first end pipe socket and an inner wall of the pipe,
- wherein the first space between the outer side of the first end pipe socket and the inner wall of the pipe is spaced apart by at least a wall thickness of the pipe;
- a monolith;
- an insulating mat comprising fiber glass material, the insulating mat surrounding the monolith, the monolith and the insulating mat being arranged in the interior of the pipe;
- and
- a second end connection funnel made of cast material, the second end connection funnel comprising a second end pipe socket having a ring-shaped cross section and a second end bracket having a ring-shaped cross section arranged radially an outer side of the second end pipe socket,
- wherein the pipe has a second end connection section fastened to the second end bracket of the second end connection funnel, wherein the second end pipe socket extends beyond the second end connection section of the pipe into the interior of the pipe and, wherein a second end connection between the second connection section of the pipe and the second end bracket of the second end connection funnel is established by a weld seam or a soldered seam,
- wherein an exhaust gas which is guided in the pipe, can penetrate a second space formed between the outer side of the second end pipe socket and an inner side of the second end bracket and between the outer side of the second end pipe socket and the inner wall of the pipe, wherein the second space between the outer side of the second end pipe socket and the inner wall of the pipe is spaced apart by at least the wall thickness of the pipe.
8 more elements
An exhaust system for a vehicle operated by an internal combustion engine, the exhaust system comprising:
- an internal combustion connection exhaust elbow designed for connection to an internal combustion engine;
- a tail pipe in fluid connection with the exhaust elbow via an exhaust catalyst;
- the exhaust catalyst comprising:
- a first end connection funnel made of casted material, the first end connection funnel comprising a first end pipe socket having a ring-shaped cross section and a first end bracket having a ring-shaped cross section arranged radially an outer side of the first end pipe socket;
- a pipe having a first end connection section fastened to the first end bracket of the first end connection funnel,
- wherein the first end pipe socket extends beyond the first end connection section of the pipe into an interior of the pipe, wherein a first end connection between the first end connection section of the pipe and the first end bracket of the first end connection funnel is established by a weld seam or a soldered seam,
- wherein an exhaust gas which is guided in the pipe, can penetrate a first space formed between the outer side of the first end pipe socket and an inner side of the first end bracket and between the outer side of the first end pipe socket and an inner wall of the pipe,
- wherein the first space between the outer side of the first end pipe socket and the inner wall of the pipe is spaced apart by at least a wall thickness of the pipe;
- a monolith;
- an insulating mat comprising fiber glass material, the insulating mat surrounding the monolith, the monolith and the insulating mat being arranged in the interior of the pipe;
- and
- a second end connection funnel made of cast material, the second end connection funnel comprising a second end pipe socket having a ring-shaped cross section and a second end bracket having a ring-shaped cross section arranged radially an outer side of the second end pipe socket,
- wherein the pipe has a second end connection section fastened to the second end bracket of the second end connection funnel, wherein the second end pipe socket extends beyond the second end connection section of the pipe into the interior of the pipe and, wherein a second end connection between the second connection section of the pipe and the second end bracket of the second end connection funnel is established by a weld seam or a soldered seam,
- wherein an exhaust gas which is guided in the pipe, can penetrate a second space formed between the outer side of the second end pipe socket and an inner side of the second end bracket and between the outer side of the second end pipe socket and the inner wall of the pipe, wherein the second space between the outer side of the second end pipe socket and the inner wall of the pipe is spaced apart by at least the wall thickness of the pipe.
11 more elements
Dependencies are inferred from the claim text.