Honeycomb body and method for producing the honeycomb body

Patent metadata

Field	Value
Publication number	US-11911752-B2
Application number	US-201917057792-A
Country	US
Kind code	B2
Filing date	May 16, 2019
Priority date	May 23, 2018
Publication date	Feb 27, 2024
Grant date	Feb 27, 2024

Abstract

A honeycomb body for exhaust gas aftertreatment includes a plurality of interconnected metal foils stacked on one another. The honeycomb body has a central first flow channel running in the axial direction of the honeycomb body, as an inflow section, and has a plurality of second flow channels between in each case two mutually adjacent metal foils. The first flow channel is in fluid communication with the second flow channels. The second flow channels formed between two mutually adjacent metal foils run in a straight line and parallel to one another along a radial direction of the honeycomb body.

First claim

The invention claimed is:

1. A honeycomb body for exhaust gas aftertreatment, comprising:
a plurality of interconnected metal foils having a respective diamond-shaped cutout, each of the interconnected metal foils being stacked on one another;
wherein the honeycomb body has a central first flow channel running in the axial direction of the honeycomb body, as an inflow section, and has a plurality of second flow channels between in each case two mutually adjacent metal foils;
wherein the first flow channel is in fluid communication with the second flow channels; and
wherein the second flow channels formed between two mutually adjacent metal foils run in a straight line and parallel to one another along a radial direction of the honeycomb body.

2. The honeycomb body as claimed in claim 1 , wherein the second flow channels between mutually adjacent metal foils are formed by corrugations in the metal foils; and wherein metal foils which are in each case directly mutually adjacent are arranged rotated with respect to one another by an angle of at least 5 degrees about the central axis of the honeycomb body.

3. The honeycomb body as claimed in claim 2 , wherein the first flow channel is formed by cutouts in the metal foils stacked on one another.

4. The honeycomb body as claimed in claim 3 , wherein the respective cutout in the respective metal foils has a substantially longer first extent ( 8 ) in a direction transverse to the direction of extent of the second flow channels formed by the corrugation of the metal foil than the second extent of the cutout in a direction parallel to the direction of extent of the second flow channels formed by the corrugation of the metal foil.

5. The honeycomb body as claimed in claim 3 , wherein the cutout along its first longer extent intersects at least 70%, or at least 80%, or at least 90% of the second flow channels formed in the respective metal foil.

6. The honeycomb body as claimed in claim 1 , wherein the metal foils forming the honeycomb body are corrugated, wherein metal foils arranged directly mutually adjacent are arranged rotated with respect to one another by in each case 90 degrees around the central axis.

7. The honeycomb body as claimed in claim 1 , wherein the second flow channels are aligned in the same direction across the honeycomb body and a smooth metal foil is arranged between each two metal foils having a corrugation.

8. The honeycomb body as claimed in claim 2 , wherein the corrugated metal foils have a corrugation with wave crests and wave troughs which run parallel to one another and extend over the entire width of the metal foils.

Assignees

• Vitesco Tech Gmbh

Inventors

• Pabst Christoph
• Hirth Peter
• Kurth Ferdi
• Voit Michael
• Schepers Sven

Classifications

• B01D53/94 Primary

  by catalytic processes · CPC title

• B01J35/56

  Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional [3D] monoliths · CPC title

• B01J35/04 Primary

  Operations & Transport · mapped topic

• B01D46/248

  Structures comprising laminated bodies or discs · CPC title

• B01D46/249

  Quadrangular e.g. square or diamond · CPC title