# US 8,465,566 B2 · Honeycomb body, method for producing a brazed honeycomb body and exhaust gas treatment component

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- Number: US 8,465,566 B2
- Document ID: US8465566B2
- Status: Granted
- Kind: B2
- Application number: 12/892,126
- Filed: 2010-09-28
- Published: 2011-03-24
- Granted: 2013-06-18
- Earliest claimed: 2008-03-28
- Assignees: EMITEC Gesellschaft fuer Emissionstechnologie mbH
- Applicants: Wolfgang Maus; Rolf Brück; Peter Hirth
- Inventors: Wolfgang Maus; Rolf Brück; Peter Hirth
- Web page: https://patentgrep.com/patent/US8465566B2

## CPC

- F01N 3/281: {Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates}
- B23K 1/0014: {Brazing of honeycomb sandwich structures}
- B23K 1/008: Soldering within a furnace (B23K1/012 takes precedence)
- B23K 1/203: {Fluxing, i.e. applying flux onto surfaces}
- B23K 3/06: Solder feeding devices; Solder melting pans
- B23K 2101/02: Honeycomb structures
- F01N 3/2821: {the support being provided with means to enhance the mixing process inside the converter, e.g. sheets, plates or foils with protrusions or projections to create turbulence}
- F01N 2450/22: by welding or brazing
- Y02A 50/20: Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- 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)
- B23K: SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- Y02A: TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE

## Abstract

A honeycomb body includes at least one housing and metal foils forming a channel structure. The channel structure is fastened to the housing by a multiplicity of linear brazed connections. A production method for providing the linear brazed connections between the channel structure and the housing and an exhaust gas treatment component having the honeycomb body in an exhaust system of a motor vehicle, are also provided.

## Claims

### Claim 1

A honeycomb body, comprising:
a honeycomb body axis;
at least one housing having an inner lateral surface;
metal foils forming a channel structure having two end sides, said metal foils having edges bearing against said inner lateral surface of said housing at contact regions; and
a multiplicity of linear brazed connections directly adjoining said edges of said metal foils and attaching said channel structure to said housing, said linear brazed connections having brazing material disposed only in said contact regions and parallel to said honeycomb body axis and at least one of said linear brazed connections spaced at a distance from both of said end sides of said channel structure.

### Claim 2 (depends on 1)

The honeycomb body according to claim 1, wherein each of said linear brazed connections has a width of at most 5 millimeters in circumferential direction of said housing.

### Claim 3 (depends on 1)

The honeycomb body according to claim 1, wherein a multiplicity of said metal foils each have at least one edge bearing against said housing and forming at least one of said linear brazed connections.

### Claim 4 (depends on 1)

The honeycomb body according to claim 1, wherein no uninterrupted circumferential brazing region is provided in the circumferential direction of said housing.

### Claim 5 (depends on 1)

The honeycomb body according to claim 1, which further comprises a circumferential brazing region with a multiplicity of said linear brazed connections in the circumferential direction of said housing, said linear brazed connections being spaced apart from one another and perpendicular to the circumferential direction.

### Claim 6 (depends on 1)

The honeycomb body according to claim 1, wherein said housing has an inner lateral surface with a surface area covered by said channel structure, and at most 10% of said surface area has said linear brazed connections.

### Claim 7 (depends on 5)

The honeycomb body according to claim 5, wherein at least one of said contact regions in said circumferential brazing region is free of said linear brazed connections.

### Claim 8 (depends on 5)

The honeycomb body according to claim 5, wherein said circumferential brazing region defines an inner lateral surface, and said linear brazed connections form a surface area portion covering at most 10% of said inner lateral surface.

### Claim 9 (depends on 1)

The honeycomb body according to claim 1, wherein said linear brazed connections have a length of 5 to 10 mm.

### Claim 10 (depends on 1)

The honeycomb body according to claim 1, wherein said housing has brazed connections only on said inner lateral surface.