EP4409120A1 - Wabenkörper für einen katalysator zur abgasnachbehandlung und verfahren zur herstellung dieses - Google Patents
Wabenkörper für einen katalysator zur abgasnachbehandlung und verfahren zur herstellung diesesInfo
- Publication number
- EP4409120A1 EP4409120A1 EP22777235.7A EP22777235A EP4409120A1 EP 4409120 A1 EP4409120 A1 EP 4409120A1 EP 22777235 A EP22777235 A EP 22777235A EP 4409120 A1 EP4409120 A1 EP 4409120A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- honeycomb body
- sections
- angle
- flow channels
- central axis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
- F01N3/2807—Metal other than sintered metal
- F01N3/281—Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
- B01J35/56—Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional [3D] monoliths
- B01J35/57—Honeycombs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
- F01N3/2807—Metal other than sintered metal
- F01N3/281—Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates
- F01N3/2821—Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N2330/00—Structure of catalyst support or particle filter
- F01N2330/02—Metallic plates or honeycombs, e.g. superposed or rolled-up corrugated or otherwise deformed sheet metal
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N2330/00—Structure of catalyst support or particle filter
- F01N2330/02—Metallic plates or honeycombs, e.g. superposed or rolled-up corrugated or otherwise deformed sheet metal
- F01N2330/04—Methods of manufacturing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N2330/00—Structure of catalyst support or particle filter
- F01N2330/30—Honeycomb supports characterised by their structural details
- F01N2330/32—Honeycomb supports characterised by their structural details characterised by the shape, form or number of corrugations of plates, sheets or foils
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N2330/00—Structure of catalyst support or particle filter
- F01N2330/30—Honeycomb supports characterised by their structural details
- F01N2330/32—Honeycomb supports characterised by their structural details characterised by the shape, form or number of corrugations of plates, sheets or foils
- F01N2330/321—Honeycomb supports characterised by their structural details characterised by the shape, form or number of corrugations of plates, sheets or foils with two or more different kinds of corrugations in the same substrate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N2330/00—Structure of catalyst support or particle filter
- F01N2330/30—Honeycomb supports characterised by their structural details
- F01N2330/44—Honeycomb supports characterised by their structural details made of stacks of sheets, plates or foils that are folded in S-form
Definitions
- the invention relates to a honeycomb body for a catalytic converter for the purpose of after-treatment of exhaust gas from an internal combustion engine, the honeycomb body being formed from a plurality of metal foils which are stacked on top of one another to form a stack of layers and are wound around at least one pivot point, with at least individual metal foils having an at least partially Have structuring, through which flow channels are formed between the individual layers, which can be flowed through along a main flow direction from a gas inlet side of the honeycomb body towards a gas outlet side.
- the invention also relates to a method for producing a honeycomb body.
- Different exhaust gas catalytic converters are used for the purpose of exhaust gas aftertreatment of internal combustion engines. These have a plurality of flow-through channels which have a catalytically active surface. The exhaust gas flowing over the catalytically active surface is converted by a chemical reaction from a specific temperature for the respective catalyst and converted into products that are harmless to the environment.
- the honeycomb body is formed by a plurality of metal foils which are stacked on top of one another to form a stack of layers and are wound around at least one pivot point.
- the honeycomb body is formed by a plurality of metal foils which are stacked on top of one another to form a stack of layers and are wound around at least one pivot point.
- cells are formed between the individual layers, which run along the axial direction of the honeycomb body from a gas inlet side to a gas outlet side and through which the exhaust gas can flow.
- honeycomb bodies of the catalysts can essentially only be flown through in a straight line and in particular a change in direction of the gas flow by a larger angle is not possible without using additional components for this purpose, such as pipes or bends regularly do not have catalytically active surfaces.
- honeycomb body for use in a catalytic converter for the purpose of after-treatment of exhaust gas from an internal combustion engine, which allows a change in direction of the main flow direction for an exhaust gas flowing through the honeycomb body.
- object of the invention to provide a method for producing the honeycomb body.
- honeycomb body having the features of claim 1.
- An embodiment of the invention relates to a honeycomb body for a catalytic converter for the purpose of after-treatment of exhaust gas Internal combustion engine, wherein the honeycomb body is formed from a plurality of metal foils, which are stacked on top of one another to form a stack of layers and are wound around at least one pivot point, wherein at least individual metal foils have at least partial structuring, through which flow channels are formed between the individual layers, which run along a main flow direction from a gas inlet side of the honeycomb body to a gas outlet side, the honeycomb body being formed from two sections over which the flow channels extend essentially without interruption, the sections being set at an angle of at least 10 degrees to one another.
- the two sections preferably have an identical number of flow channels, which also have an identical cross section.
- the sections are set at an angle of at least 10 degrees, preferably at least 45 degrees, to one another.
- the surface of the honeycomb body over which flow occurs along the flow channels is completely provided with a catalytically active coating, so that the entire surface of the flow channels over which flow occurs is catalytically active and participates in the chemical conversion of an exhaust gas flowing through the honeycomb body.
- honeycomb body has an arcuate design.
- the two partial sections are produced by means of a cut through a honeycomb body with flow channels running in a straight line.
- the two sections are preferably produced by cutting up a conventional honeycomb body. In this way, it can be ensured that the two sections are identical in terms of cell density and channel geometry, thus ensuring a seamless, preferably uninterrupted or at least essentially uninterrupted course of the flow channels. Due to the number of individual flow channels and the manufacturing tolerances, it is to be expected that at least some of the flow channels will not be completely uninterrupted become. In particular, positional tolerances during the joining contribute to this, in addition, material can be introduced into individual flow channels as a result of the connection, as a result of which these can be partially or completely blocked.
- a preferred exemplary embodiment is characterized in that the section through the honeycomb body runs at an angle of 45 degrees to the central axis of the honeycomb body.
- the cut at an angle of 45 degrees to the central axis of the honeycomb body is particularly advantageous in order to obtain two partial sections which can advantageously be placed against one another and connected to one another. A change in the flow direction of up to 90 degrees can be achieved.
- the two partial sections are arranged rotated relative to one another by an angle at the interface.
- the subsections produced by the cut can be arranged rotated relative to one another by any desired angle, as a result of which the flow channels are also deflected by an angle resulting from the rotation. If the sections are rotated by 180 degrees to one another, the flow channels are deflected by 90 degrees.
- the two sections are connected to one another in a durable and gas-tight manner.
- the partial sections of the honeycomb body must be rejoined in a gas-tight and durable manner.
- This can preferably be achieved by a soldering process.
- the subsections can also be inserted into a jacket tube serving as a housing.
- the casing tube and the sections can advantageously have positioning aids in order to ensure that the sections are securely arranged at the desired predefined angle of rotation relative to one another. It can also be ensured in this way that the flow channels of the subsections come into flush contact with one another and as few flow channels as possible are blocked by an undesired overlapping with structures of the respective other subsection.
- the rectilinear honeycomb body forming the two subsections is designed to be rotationally symmetrical about its axially running central axis.
- a rotationally symmetrical structure around the central axis ensures that the sections, in particular if the sections were produced by a cut at an angle of 45 degrees to the central axis, can be arranged at any angle of rotation from 0 degrees to 180 degrees to one another without areas of the Survive subsections over the other subsection.
- One embodiment of the invention relates to a method for producing a honeycomb body, wherein a honeycomb body with rectilinear flow channels, which are arranged parallel to a central axis running in the axial direction, is divided into two sections by a cut at an angle to the central axis, the two sections then rotated by an angle of rotation around the central axis, brought together at the interface and connected to one another in a durable and gas-tight manner.
- the two partial sections are produced by a cut at an angle of 45 degrees to the central axis of the honeycomb body.
- a cutting angle of 45 degrees is particularly advantageous, as this allows the sub-sections to be continuously twisted in the rotation angle range from 0 degrees to 180 degrees relative to one another.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Exhaust Gas After Treatment (AREA)
- Catalysts (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021210776.1A DE102021210776B3 (de) | 2021-09-27 | 2021-09-27 | Wabenkörper für einen Katalysator zur Abgasnachbehandlung und Verfahren zur Herstellung dieses |
| PCT/EP2022/075950 WO2023046627A1 (de) | 2021-09-27 | 2022-09-19 | Wabenkörper für einen katalysator zur abgasnachbehandlung und verfahren zur herstellung dieses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4409120A1 true EP4409120A1 (de) | 2024-08-07 |
Family
ID=83447786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22777235.7A Withdrawn EP4409120A1 (de) | 2021-09-27 | 2022-09-19 | Wabenkörper für einen katalysator zur abgasnachbehandlung und verfahren zur herstellung dieses |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20240382943A1 (de) |
| EP (1) | EP4409120A1 (de) |
| CN (1) | CN117980593A (de) |
| DE (1) | DE102021210776B3 (de) |
| WO (1) | WO2023046627A1 (de) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4382323A (en) * | 1980-07-10 | 1983-05-10 | General Motors Corporation | Method for manufacturing a wound foil structure comprising distinct catalysts |
| JPS6393332A (ja) | 1986-10-08 | 1988-04-23 | Nippon Kinzoku Kk | 排気浄化装置 |
| JPH03181338A (ja) * | 1989-12-11 | 1991-08-07 | Gebr Sulzer Ag | 触媒エレメントおよび触媒反応用反応器 |
| JP3096302B2 (ja) * | 1989-12-11 | 2000-10-10 | ゲブリユーダー ズルツアー アクチエンゲゼルシヤフト | 不均一反応型の反応器及び反応器用触媒 |
| JP2722828B2 (ja) | 1991-03-06 | 1998-03-09 | 日産自動車株式会社 | 内燃機関の排気フィルタ |
| WO2006113196A2 (en) * | 2005-04-14 | 2006-10-26 | Catacel Corp. | Catalytic reactor cartridge |
| US8057746B2 (en) * | 2007-05-02 | 2011-11-15 | Acr Co., Ltd. | Carrier for exhaust-gas purification and exhaust-gas purifier having the carrier |
-
2021
- 2021-09-27 DE DE102021210776.1A patent/DE102021210776B3/de active Active
-
2022
- 2022-09-19 EP EP22777235.7A patent/EP4409120A1/de not_active Withdrawn
- 2022-09-19 CN CN202280058094.0A patent/CN117980593A/zh active Pending
- 2022-09-19 WO PCT/EP2022/075950 patent/WO2023046627A1/de not_active Ceased
- 2022-09-19 US US18/691,977 patent/US20240382943A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE102021210776B3 (de) | 2023-03-09 |
| CN117980593A (zh) | 2024-05-03 |
| WO2023046627A1 (de) | 2023-03-30 |
| US20240382943A1 (en) | 2024-11-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1830042B1 (de) | Statischer Mischer und Abgasbehandlungseinrichtung | |
| EP2440759B1 (de) | Abgasbehandlungsvorrichtung für den motornahen einsatz | |
| EP4370787B1 (de) | Vorrichtung zur erwärmung eines abgasstroms | |
| EP2027372B1 (de) | Nebenstromfilter mit verbessertem filterwirkungsgrad | |
| EP2411638B1 (de) | Wabenkörper für ein abgasreinigungssystem | |
| EP2520359B1 (de) | Mischelement sowie Mischvorrichtung für eine Abgasanlage einer Brennkraftmaschine | |
| EP2110636A1 (de) | Abgaswärmeübertrager, insbesondere Abgaskühler für Abgasrückführung in Kraftfahrzeugen | |
| DE102010023323A1 (de) | Abgasbehandlungsvorrichtung | |
| DE102016212399A1 (de) | Raketentriebwerk | |
| EP3990757A1 (de) | Vorrichtung zur abgasnachbehandlung | |
| DE102020208062A1 (de) | Wärmetauscher und verfahren zu seiner herstellung | |
| EP0988443B1 (de) | Radialkatalysator, insbesondere für kleinmotoren | |
| DE102021211213B3 (de) | Elektrisch beheizbarer Wabenkörper mit Welllagen unterschiedlicher Zelldichte | |
| DE102005012066A1 (de) | Wabenkörper mit Mitteln zur Reaktandenzufuhr und entsprechendes Verfahren und Abgassystem | |
| WO2023046627A1 (de) | Wabenkörper für einen katalysator zur abgasnachbehandlung und verfahren zur herstellung dieses | |
| DE102012104767A1 (de) | Konischer Wabenkörper mit schräg radial verlaufenden Kanälen | |
| DE102020212024A1 (de) | Ringkatalysator mit katalytisch aktiver Beschichtung | |
| DE102021122254B4 (de) | Elektrisches Heizelement, damit hergestellte elektrische Heizvorrichtung, sowie jeweiliges Herstellverfahren hierfür | |
| WO2024008577A1 (de) | Katalysator zur abgasnachbehandlung mit verbesserter struktur | |
| EP1861608B1 (de) | Abgasanlage mit einer abgasbehandlungseinheit und einem wärmetauscher in einer abgasrückführleitung | |
| WO2021104936A1 (de) | Vorrichtung zur abgasnachbehandlung | |
| WO2023247167A1 (de) | Vorrichtung zur erwärmung von in einer abgasleitung strömbaren abgas | |
| WO2021028279A1 (de) | Otto-motor mit im abgasstrang angeordnetem scr-katalysator zur ammoniak-konvertierung | |
| DE102014222395A1 (de) | Abgasanlage und Verfahren zur Herstellung einer solchen | |
| EP2568138B1 (de) | Flexible, flächige Rohmatrize für einen Katalysator, sowie entsprechender Katalysator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20240429 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20241109 |