DE102006061693A1 - Exhaust gas after-treatment arrangement for diesel internal-combustion engine, has coating that limits flow channels for exhaust gas to be treated, where part of channels are opened at inflow surface, and are opened at outflow surface - Google Patents
Exhaust gas after-treatment arrangement for diesel internal-combustion engine, has coating that limits flow channels for exhaust gas to be treated, where part of channels are opened at inflow surface, and are opened at outflow surface Download PDFInfo
- Publication number
- DE102006061693A1 DE102006061693A1 DE200610061693 DE102006061693A DE102006061693A1 DE 102006061693 A1 DE102006061693 A1 DE 102006061693A1 DE 200610061693 DE200610061693 DE 200610061693 DE 102006061693 A DE102006061693 A DE 102006061693A DE 102006061693 A1 DE102006061693 A1 DE 102006061693A1
- Authority
- DE
- Germany
- Prior art keywords
- exhaust
- treatment arrangement
- coating
- exhaust gas
- arrangement
- 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- Withdrawn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
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
- F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
- B01D39/2027—Metallic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
- B01D39/2068—Other inorganic materials, e.g. ceramics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2418—Honeycomb filters
-
- 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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
-
- 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
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/022—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
- F01N3/0222—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous the structure being monolithic, e.g. 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
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/022—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
- F01N3/0226—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous the structure being fibrous
-
- 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
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
- F01N3/0842—Nitrogen oxides
-
- 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
- F01N3/105—General auxiliary catalysts, e.g. upstream or downstream of the main catalyst
- F01N3/106—Auxiliary oxidation catalysts
-
- 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
-
- 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
- F01N3/2825—Ceramics
- F01N3/2828—Ceramic multi-channel monoliths, e.g. honeycombs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2279/00—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses
- B01D2279/30—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses for treatment of exhaust gases from IC Engines
-
- 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
- F01N2330/06—Ceramic, e.g. monoliths
-
- 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
- F01N2330/14—Sintered material
-
- 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
- F01N2330/22—Metal foam
-
- 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
-
- 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
- F01N2330/38—Honeycomb supports characterised by their structural details flow channels with means to enhance flow mixing,(e.g. protrusions or projections)
-
- 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
- F01N2330/48—Honeycomb supports characterised by their structural details characterised by the number of flow passages, e.g. cell density
-
- 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
- F01N2510/00—Surface coverings
- F01N2510/06—Surface coverings for exhaust purification, e.g. catalytic reaction
- F01N2510/065—Surface coverings for exhaust purification, e.g. catalytic reaction for reducing soot ignition temperature
-
- 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
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0814—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents combined with catalytic converters, e.g. NOx absorption/storage reduction catalysts
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Toxicology (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Exhaust Gas After Treatment (AREA)
- Processes For Solid Components From Exhaust (AREA)
- Filtering Materials (AREA)
Abstract
Description
Stand der TechnikState of the art
Die Erfindung betrifft eine Abgasnachbehandlungsanordnung, insbesondere zur Behandlung von Abgasen einer Brennkraftmaschine, nach dem Oberbegriff des Anspruchs 1, sowie eine Abgasreinigungsanlage mit einer Abgasnachbehandlungsanordnung.The The invention relates to an exhaust aftertreatment device, in particular for the treatment of exhaust gases of an internal combustion engine, according to the preamble of claim 1, and an emission control system with an exhaust aftertreatment device.
Aus
der
Aus
der
Bei einer Abgasnachbehandlungsanordnung mit wechselseitig geschlossenen Strömungskanälen wird eine hohe Filtrationswirkung erzeugt. Dies geht jedoch mit einem vergleichsweise großen Druckverlust über die Abgasnachbehandlungsanordnung hinweg einher, so dass, insbesondere nach längerer Anlagerung von aus dem Abgas gefilterten Partikeln, der sogenannte "Abgasgegendruck" einer Abgasreinigungsanlage steigt. Bei Überschreitung eines maximal zulässigen Drucks muss die Abgasnachbehandlungsanordnung regeneriert werden, wobei angesammelte Partikel verbrannt werden.at an exhaust aftertreatment arrangement with mutually closed Flow channels becomes a high filtration effect generated. However, this goes with a comparatively large Associated with pressure loss across the exhaust aftertreatment assembly, so that, especially after prolonged accumulation of off the exhaust filtered particles, the so-called "exhaust back pressure" an emission control system is increasing. When exceeded a maximum allowable pressure must the exhaust aftertreatment arrangement be regenerated, whereby accumulated particles are burned.
Bei den oben genannten Abgasnachbehandlungsanordnungen, bei denen das zu behandelnde Abgas einen Strömungskanal in seiner gesamten Länge durchströmt, ist der Druckverlust weniger hoch. Dies geht jedoch mit einer geringeren Filtrationswirkung einher. Dies bedeutet, dass bei einem solchen Filter nur ein geringerer Anteil von Partikeln aus dem Abgas einer Brennkraftmaschine herausgefiltert werden kann.at the abovementioned exhaust aftertreatment arrangements, in which the exhaust gas to be treated a flow channel in its entire length flows through, the pressure loss is less high. This is possible but associated with a lower filtration effect. This means, that in such a filter only a smaller proportion of particles from the exhaust gas of an internal combustion engine can be filtered out.
Aus
der
Offenbarung der ErfindungDisclosure of the invention
Aufgabe der vorliegenden Erfindung ist es, eine Abgasnachbehandlungsanordnung zu schaffen, die bei einem möglichst geringen Druckverlust eine hohe Filtrationswirkung ermöglicht.task The present invention is an exhaust aftertreatment device to create, with the lowest possible pressure loss allows a high filtration effect.
Die der Erfindung zugrundeliegende Aufgabe wird bei einer eingangs genannten Abgasnachbehandlungsanordnung dadurch gelöst, dass zumindest ein Teil der Strömungskanäle für zu behandelndes Abgas auf ihrer Eintrittsfläche und für behandeltes Abgas auf ihrer Austrittsfläche offen sind.The The problem underlying the invention is at an aforementioned Exhaust after-treatment arrangement achieved in that at least a part of the flow channels for to be treated Exhaust on their entry surface and for treated Exhaust gas on its exit surface are open.
Ausgehend von einer Abgasnachbehandlungsanordnung, die auf dem Prinzip des Wanddurchflusses beruht, wurde im Rahmen der Erfindung erkannt, dass dieses Prinzip mit dem Prinzip einer "Flow-through-Anordnung" kombiniert werden kann. Auf diese Weise kann das zu behandelnde Abgas die Tragstruktur durchströmen und dabei sowohl von einem Strömungskanal in einen benachbarten Strömungskanal wechseln, als auch einen Strömungskanal in dessen gesamter Länge durchströmen. Durch die Vervielfachung der Strömungswege in Verbindung mit der Vergrößerung der Oberfläche der Tragstruktur durch eine geeignete Beschichtung kann einerseits der Druckverlust über der Abgasnachbehandlungsanordnung auf einem niedrigen Niveau gehalten werden und andererseits eine vergleichsweise hohe Filtrationseffizienz von bis zu 70% erreicht werden.outgoing from an exhaust aftertreatment arrangement based on the principle of Wall flow is based, was recognized in the invention, that this principle with the principle of a "flow-through arrangement" can be combined. In this way, the one to be treated Exhaust flow through the support structure and thereby both of a flow channel in an adjacent flow channel change, as well as a flow channel in its entirety Flow through the length. By the multiplication of the Flow paths in connection with the enlargement the surface of the support structure by a suitable coating can on the one hand, the pressure drop across the exhaust aftertreatment device be kept at a low level and on the other hand a achieved comparatively high filtration efficiency of up to 70% become.
Die im Rahmen der Erfindung verwendete Beschichtung ist so strukturiert, dass sie nicht glattflächig, sondern uneben ist und kleine, dreidimensionale Strukturen aufweist, die die insgesamt zur Verfügung stehende Oberfläche vergrößern.The Coating used in the invention is structured in such a way that that it is not smooth, but uneven and small, has three-dimensional structures that the total available enlarge the standing surface.
Besonders vorteilhaft ist es, wenn die Tragstruktur monolithisch ist. Eine solche Tragstruktur lässt sich besonders einfach mit Hilfe eines Extrusionsverfahrens herstellen. Hieran anschließend kann die Tragstruktur beschichtet werden.Especially It is advantageous if the support structure is monolithic. A Such support structure is particularly easy with the help produce an extrusion process. Then afterwards the support structure are coated.
Die
Tragstruktur kann zumindest anteilig aus einem metallischen Material
gebildet sein. Beispielsweise können Sintermetalle eingesetzt
werden. Die Tragstruktur kann zumindest anteilig aus metallischen
Folien und/oder Fasern und/oder aus Metallschaum gebildet sein.
Es können auch gewellte Folien zum Einsatz kommen, die
aus der
Das Beschichtungsmaterial kann bspw. in Faserform oder Vliesform auf einen Teil der Tragstruktur oder auf die gesamte Tragstruktur aufgebracht sein. Vorzugsweise hat die Beschichtung eine spezifische Oberfläche von mehr als 30 Quadratmeter pro Gramm.The coating material can be applied, for example, in fiber form or nonwoven form to a part of the support structure or to the entire support structure. Preferably, the coating has a specific surface of more than 30 square meters per gram.
Die Beschichtung kann in einer solchen Stärke auf die Tragstruktur aufgetragen sein, das die Beschichtung ein Teilvolumen eines Strömungskanals einnimmt und somit ein freier Strömungsquerschnitt verbleibt. Es ist aber auch möglich, dass die Beschichtung einen Strömungskanal vollständig ausfüllt. Hierdurch kann die Filtrationseffizienz weiter erhöht werden.The Coating can be at such a strength on the support structure be applied, the coating occupies a partial volume of a flow channel and thus a free flow cross section remains. It But it is also possible that the coating has a flow channel completely filled out. This allows the filtration efficiency be further increased.
Die Beschichtung kann zumindest anteilig metallische Bestandteile enthalten. Ein solches Material eignet sich insbesondere für metallische Tragstrukturen.The Coating may at least partially contain metallic constituents. Such a material is particularly suitable for metallic support structures.
Es ist weiterhin vorteilhaft, wenn die Beschichtung mindestens einen katalytisch wirkenden Werkstoff, insbesondere Edelmetalle wie zum Beispiel Platin und/oder Palladium enthält. Mit einem solchen Katalysator kann die für einen Abbrand bei einer Regeneration der Abgasnachbehandlungsanordnung erforderliche Minimaltemperatur herabgesetzt werden.It is also advantageous if the coating at least one catalytically active material, in particular precious metals such as Example platinum and / or palladium contains. With such a Catalyst can be used for burning in a regeneration the exhaust aftertreatment arrangement required minimum temperature be lowered.
Vorzugsweise enthält die Beschichtung Fasern und/oder Teilchen, die in unregelmäßiger Anordnung auf die Tragstruktur aufgebracht werden.Preferably The coating contains fibers and / or particles that in irregular arrangement on the support structure be applied.
Durch den niedrigen Druckverlust der erfindungsgemäßen Abgasnachbehandlungsanordnung ist es möglich, diese in Serie mit einem weiteren Partikelfilter zu schalten, der insbesondere ein Wanddurchflussfilter sein kann.By the low pressure loss of the invention Exhaust after-treatment arrangement, it is possible this in Series with another particulate filter to switch, in particular a wall flow filter can be.
Weitere Vorteile und vorteilhafte Ausgestaltungen der Erfindung sind der nachfolgenden Zeichnung, deren Beschreibung und den Patentansprüchen entnehmbar. Alle in der Zeichnung, deren Beschreibung und den Patentansprüchen beschriebenen Merkmale können sowohl einzeln als auch in beliebiger Kombination miteinander erfindungswesentlich sein.Further Advantages and advantageous embodiments of the invention are the subsequent drawing, the description and the claims removable. All in the drawing, the description and the claims described features can be both individually and in Any combination with each other essential to the invention.
Kurze Beschreibung der ZeichnungenBrief description of the drawings
Es zeigen:It demonstrate:
Ausführungsformen der Erfindungembodiments the invention
In
Der
Filter
Die
Abgasnachbehandlungsanordnung
Parallel
zu einer Längsachse
Optional
kann eine Teilmenge der Strömungskanäle
In
Die
Beschichtung
Die
Fasern
In
Durchströmungsrichtung
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - DE 102004053267 A1 [0002, 0003] - DE 102004053267 A1 [0002, 0003]
- - US 2005/0074374 A1 [0006] US 2005/0074374 A1 [0006]
- - JP 2002-276339 [0006] - JP 2002-276339 [0006]
- - DE 19704147 A1 [0012] - DE 19704147 A1 [0012]
Claims (27)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200610061693 DE102006061693A1 (en) | 2006-12-28 | 2006-12-28 | Exhaust gas after-treatment arrangement for diesel internal-combustion engine, has coating that limits flow channels for exhaust gas to be treated, where part of channels are opened at inflow surface, and are opened at outflow surface |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200610061693 DE102006061693A1 (en) | 2006-12-28 | 2006-12-28 | Exhaust gas after-treatment arrangement for diesel internal-combustion engine, has coating that limits flow channels for exhaust gas to be treated, where part of channels are opened at inflow surface, and are opened at outflow surface |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102006061693A1 true DE102006061693A1 (en) | 2008-07-03 |
Family
ID=39465693
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200610061693 Withdrawn DE102006061693A1 (en) | 2006-12-28 | 2006-12-28 | Exhaust gas after-treatment arrangement for diesel internal-combustion engine, has coating that limits flow channels for exhaust gas to be treated, where part of channels are opened at inflow surface, and are opened at outflow surface |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102006061693A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014015786A1 (en) * | 2014-10-24 | 2016-04-28 | Man Diesel & Turbo Se | Device for removing solid fractions from the flue gas of internal combustion engines or industrial gas turbines |
CN105909348A (en) * | 2015-02-25 | 2016-08-31 | 日本碍子株式会社 | Honeycomb structure |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19704147A1 (en) | 1997-02-04 | 1998-08-06 | Emitec Emissionstechnologie | Heat-resistant and regenerable filter body with flow paths |
JP2002276339A (en) | 2001-03-16 | 2002-09-25 | Isuzu Motors Ltd | Diesel exhaust gas processing device |
US20050074374A1 (en) | 2003-01-10 | 2005-04-07 | Toyota Jidosha Kabushiki Kaisha | Filter catalyst for purifying exhaust gases |
DE102004053267A1 (en) | 2003-12-20 | 2005-07-21 | Robert Bosch Gmbh | System for treating internal combustion engine exhaust gas comprises a layer of fibers on the surface of a support |
-
2006
- 2006-12-28 DE DE200610061693 patent/DE102006061693A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19704147A1 (en) | 1997-02-04 | 1998-08-06 | Emitec Emissionstechnologie | Heat-resistant and regenerable filter body with flow paths |
JP2002276339A (en) | 2001-03-16 | 2002-09-25 | Isuzu Motors Ltd | Diesel exhaust gas processing device |
US20050074374A1 (en) | 2003-01-10 | 2005-04-07 | Toyota Jidosha Kabushiki Kaisha | Filter catalyst for purifying exhaust gases |
DE102004053267A1 (en) | 2003-12-20 | 2005-07-21 | Robert Bosch Gmbh | System for treating internal combustion engine exhaust gas comprises a layer of fibers on the surface of a support |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014015786A1 (en) * | 2014-10-24 | 2016-04-28 | Man Diesel & Turbo Se | Device for removing solid fractions from the flue gas of internal combustion engines or industrial gas turbines |
CN105545417A (en) * | 2014-10-24 | 2016-05-04 | 曼柴油机和涡轮机欧洲股份公司 | Device for removal of solid contents from the smoke gas of internal combustion engine or industrial gas turbines |
CN105545417B (en) * | 2014-10-24 | 2020-11-10 | 曼恩能源方案有限公司 | Device for removing solid content from the flue gas of an internal combustion engine or an industrial gas turbine |
CN105909348A (en) * | 2015-02-25 | 2016-08-31 | 日本碍子株式会社 | Honeycomb structure |
CN105909348B (en) * | 2015-02-25 | 2019-11-26 | 日本碍子株式会社 | Honeycomb structure |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69610022T2 (en) | Particle trap for a diesel engine | |
DE102005023518B4 (en) | Blockage-free filter unit with high efficiency | |
DE102011050788A1 (en) | Exhaust gas aftertreatment device and method for a gasoline engine | |
DE102005044494B3 (en) | Device for removing harmful components from exhaust gases of internal combustion engines | |
DE20117873U1 (en) | Open filter body with improved flow properties | |
DE102005000890A1 (en) | Method for removing particles from exhaust gases and fiber layer and particle filter thereto | |
DE102012023049A1 (en) | SCR exhaust aftertreatment device and motor vehicle with such | |
DE102020110011A1 (en) | Exhaust gas cleaning device | |
EP1336034B1 (en) | Method and device for aftertreatment of exhaust gases from combustion engines | |
WO2007057253A1 (en) | Filter element and filter for exhaust-gas aftertreatment | |
DE102010033689A1 (en) | Exhaust gas aftertreatment system for internal combustion engine has flow-through monolith with storage capacity designed such that breakthrough signal downstream of flow-through monolith has highest gradient of concentration curve | |
DE60212245T3 (en) | Method and device for removing soot particles from the exhaust gas of a diesel engine | |
DE102004024685A1 (en) | Catalyst carrier body for a close-coupled catalytic converter | |
EP1882090B1 (en) | Exhaust system with two exhaust treatment units | |
DE102006061693A1 (en) | Exhaust gas after-treatment arrangement for diesel internal-combustion engine, has coating that limits flow channels for exhaust gas to be treated, where part of channels are opened at inflow surface, and are opened at outflow surface | |
EP0086367A2 (en) | Purification device for the exhaust gases of diesel engines, particularly in motor vehicles | |
DE102008003044B4 (en) | Emission control system for improved exhaust gas purification by convective mixing | |
DE102008019814A1 (en) | Exhaust gas cleaning body and internal combustion engine with exhaust gas cleaning body | |
EP1687086A1 (en) | Exhaust system for a combustion engine | |
EP2699770B1 (en) | Particle filter provided with a catalytic coating | |
DE102005032954B4 (en) | Particulate filter for exhaust gases | |
DE102008040646A1 (en) | Exhaust after-treatment device for an internal combustion engine with spark ignition | |
DE102007063100A1 (en) | Exhaust gas aftertreatment device for internal combustion engine, has filter elements, where storage capacity for soot particles of one of filter elements is larger or equal to storage capacity of another filter element | |
EP2740913A1 (en) | Exhaust gas finishing treatment system | |
WO2013160472A1 (en) | Coated particle filter, catalytic converter and device having the same |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20110701 |