Catalytic device

Patent metadata

Field	Value
Publication number	US-11319854-B2
Application number	US-201917265530-A
Country	US
Kind code	B2
Filing date	Aug 1, 2019
Priority date	Aug 10, 2018
Publication date	May 3, 2022
Grant date	May 3, 2022

Abstract

A catalytic device that can increase the durability of a catalyst support with holes is provided. A flat plate and a corrugated plate have a plurality of holes, a joint area between the flat plate and the corrugated plate is provided in a first upstream area including one end of a catalyst support, and a joint area between the catalyst support and an outer cylinder is provided in a second upstream area that includes the first upstream area and is wider than the first upstream area in the direction of an axis.

First claim

What is claim is:

1. A catalytic device comprising:
a catalyst support that is formed by metal leaf-shaped flat plate and corrugated plate being stacked and rolled and supports a catalyst; and
an outer cylinder that houses the catalyst support and supports the catalyst support with one end of the catalyst support made to face an upstream side of exhaust gas and another end of the catalyst support made to face a downstream side of the exhaust gas, wherein,
the flat plate and the corrugated plate have a plurality of holes,
in a flat state in which the flat plate and the corrugated plate are not yet shaped into the catalyst support, the plurality of holes form a plurality of first lines by aligning in a first direction that is parallel to a direction of an axis of the catalyst support and form a plurality of second lines by aligning in a second direction that is orthogonal to the first direction,
a joint area between the flat plate and the corrugated plate is provided in a first upstream area including the one end of the catalyst support, and
a joint area between the catalyst support and the outer cylinder is provided in a second upstream area including the one end of the catalyst support.

2. The catalytic device according to claim 1 , wherein the joint area between the catalyst support and the outer cylinder is provided in the second upstream area that includes the first upstream area and is wider than the first upstream area in the direction of the axis.

3. The catalytic device according to claim 1 , wherein a predetermined number of the second lines are included in the first upstream area.

4. The catalytic device according to claim 1 , wherein the joint area between the flat plate and the corrugated plate is provided in a downstream area that includes another end of the catalyst support.

Assignees

• Honda Motor Co Ltd
• Vitesco Tech Gmbh

Inventors

• Horimura Hiroyuki
• Ito Kosaku
• Jayat Francois
• Kawaguchi Daiji
• Maeda Kazuhisa
• Seifert Sven
• Voit Michael

Classifications

• F01N2260/10

  for avoiding stress caused by expansions or contractions due to temperature variations · CPC title

• F01N2350/04

  with means compensating thermal expansion · CPC title

• F01N2330/02

  Metallic plates or honeycombs, e.g. superposed or rolled-up corrugated or otherwise deformed sheet metal · CPC title

• F01N3/2821 Primary

  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 · CPC title

• F01N3/281 Primary

  Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates · CPC title