DE10254036B4 - More bed catalyst - Google Patents
More bed catalyst Download PDFInfo
- Publication number
- DE10254036B4 DE10254036B4 DE10254036A DE10254036A DE10254036B4 DE 10254036 B4 DE10254036 B4 DE 10254036B4 DE 10254036 A DE10254036 A DE 10254036A DE 10254036 A DE10254036 A DE 10254036A DE 10254036 B4 DE10254036 B4 DE 10254036B4
- Authority
- DE
- Germany
- Prior art keywords
- monoliths
- spacer elements
- bed catalyst
- catalyst according
- housing
- 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.)
- Expired - Fee Related
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
- F01N3/2839—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
- F01N3/2875—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration by using elastic means, e.g. spring leaves, for retaining catalyst body in the housing
-
- 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
- F01N13/0097—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 the purifying devices are arranged in a single housing
-
- 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
- F01N3/2839—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
- F01N3/2853—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration using mats or gaskets between catalyst body and housing
-
- 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
- F01N13/008—Mounting or arrangement of exhaust sensors in or on exhaust apparatus
-
- 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
- F01N2310/00—Selection of sound absorbing or insulating material
- F01N2310/14—Wire mesh fabric, woven glass cloth or the like
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Mehrbettkatalysator
für einen
Abgasstrang einer Brennkraftmaschine, insbesondere eines Kraftfahrzeugs,
– mit einem
Gehäuse
(2), in dem wenigstens zwei katalytisch wirkende Monolithen (3,4)
axial benachbart und in Reihe durchströmbar angeordnet sind,
– wobei
die beiden Monolithen (3,4) umfangsseitig von einer gemeinsamen
hitzebeständigen
Lagermatte (5) umhüllt und über diese
im Gehäuse
(2) gelagert sind,
– wobei
axial zwischen den beiden Monolithen (3,4) wenigstens zwei Distanzelemente
(9) angeordnet sind, über die
sich die Monolithen (3,4) axial aneinander abstützen,
dadurch gekennzeichnet,
dass
die Distanzelemente (9) umfangsmäßig verteilt
angeordnet sind und jeweils durch ein elastisch nachgiebig ausgebildetes
Drahtgestrick aus einem hitzebeständigen Draht gebildet sind.Mehrbettkatalysator for an exhaust system of an internal combustion engine, in particular of a motor vehicle,
- With a housing (2) in which at least two catalytically active monoliths (3,4) are arranged axially adjacent and in a flow-through,
Wherein the two monoliths (3, 4) are enveloped on the circumference by a common heat-resistant bearing mat (5) and are mounted on them in the housing (2),
- wherein axially between the two monoliths (3,4) at least two spacer elements (9) are arranged, over which the monoliths (3,4) are supported axially against each other,
characterized,
that the spacer elements (9) are distributed circumferentially and are each formed by an elastically yielding formed wire mesh made of a heat-resistant wire.
Description
Die vorliegende Erfindung betrifft einen Mehrbettkatalysator für einen Abgasstrang einer Brennkraftmaschine, insbesondere eines Kraftfahrzeugs, mit den Merkmalen des Oberbegriffs des Anspruchs 1.The The present invention relates to a multi-bed catalyst for a Exhaust line of an internal combustion engine, in particular of a motor vehicle, with the features of the preamble of claim 1.
Ein Mehrbettkatalysator weist mehrere katalytisch wirkende Monolithen auf, die in axialer Richtung hintereinander angeordnet sind und im Betrieb in Reihe durchströmt werden. Beispielsweise enthält ein Zweibettkatalysator zwei Monolithen.One Multi-bed catalyst has several catalytically active monoliths on, which are arranged one behind the other in the axial direction and flows through in series during operation become. For example, one contains Twin catalyst two monoliths.
Für bestimmte Anwendungen kann es erforderlich sein, zwischen zwei benachbarten Monolithen einen axialen Mindestabstand sicherzustellen, beispielsweise um dort eine Sonde anbringen zu können.For certain Applications may be required between two adjacent ones Monoliths to ensure an axial minimum distance, for example to attach a probe there.
Aus
der
Die
Die
Die
Die vorliegende Erfindung beschäftigt sich mit dem Problem, für einen Mehrbettkatalysator der eingangs genannten Art eine verbesserte Ausführungsform anzugeben, die es insbesonde re ermöglicht, einen axialen Mindestabstand zwischen zwei benachbarten Monolithen dauerhaft zu gewährleisten.The present invention employs dealing with the problem, for a multi-bed catalyst of the type mentioned improved embodiment specify that it insbesonde re possible, an axial minimum distance permanently between two adjacent monoliths.
Dieses Problem wird erfindungsgemäß durch den Gegenstand des unabhängigen Schutzanspruchs gelöst. Vorteilhafte Ausführungsformen sind Gegenstand der abhängigen Schutzansprüche.This Problem is inventively the subject of the independent Protection claim solved. Advantageous embodiments are the subject of the dependent Protection claims.
Die vorliegende Erfindung beruht auf dem allgemeinen Gedanken, die benachbarten Monolithen mit Hilfe von geeigneten umfangsmäßig verteilt angeordneten Distanzelementen aneinander in axialer Richtung abzustützen. Auf diese Weise kann ein gewünschter Mindestabstand zwischen den Monolithen aufrechterhalten werden. Derartige Distanzelemente können mit vergleichsweise geringem Aufwand beim Einsetzen der Monolithen in ein Gehäuse des Mehrbettkatalysators gleichzeitig mit eingebaut werden. Gehäuseseitige Maßnahmen sind dabei nicht erforderlich, so dass der Aufwand zur Realisierung des erfindungsgemäßen Mehrbettkatalysators vergleichsweise gering ist.The The present invention is based on the general idea, the neighboring Monoliths by means of suitable circumferentially distributed spacer elements to support each other in the axial direction. This way you can a desired one Minimum distance between the monoliths are maintained. Such spacers can with comparatively little effort when inserting the monoliths in a housing of the Multi-bed catalyst can be installed simultaneously. housing-side activities are not required, so the effort to realize of the multi-bed catalyst according to the invention comparatively is low.
Von besonderen Vorteil ist hierbei die Lagerung der beiden Monolithen mit Hilfe einer gemeinsamen Lagermatte, wodurch sich der Zusammenbau des Mehrbettkatalysators erheblich vereinfacht.From particular advantage here is the storage of the two monoliths with the help of a common storage mat, which increases the assembly of the Multi-bed catalyst considerably simplified.
Erfindungsgemäß sind die Distanzelemente jeweils durch ein Drahtgestrick aus einem hitzebeständigen Draht gebildet sind. Diese Bauweise ist in mehrfacher Hinsicht von Vorteil. Zum einen sind solche Drahtgestrick-Distanzelemente elas tisch nachgiebig ausgebildet, so dass sich die Monolithen, die üblicherweise aus einer spröden Keramik bestehen, über die Distanzelemente elastisch aneinander abstützen, wodurch die Gefahr einer Be schädigung der Monolithen reduziert ist. Zum anderen können solche Drahtgestrick-Distanzelemente Wärmedehnungseffekte elastisch kompensieren, ohne dass dabei allzu große Spannungen auftreten. Des Weiteren eignen sich solche Drahtgestrick-Distanzelemente zu einer thermisch isolierten Abstützung der Monolithen am Gehäuse, wodurch „hot-spots" genannte Hochtemperaturzonen am Gehäuse vermieden werden.According to the invention Distance elements each by a wire mesh made of a heat-resistant wire are formed. This construction is advantageous in several ways. On the one hand, such wire mesh spacer elements are elastically yielding formed so that the monoliths, usually made of a brittle ceramic exist, about the spacer elements elastically support each other, whereby the risk of Damage the monolith is reduced. On the other hand, such wire mesh spacer elements Thermal expansion effects compensate elastically, without causing excessive stresses occur. Furthermore, such wire mesh spacer elements are suitable to a thermally insulated support of the monoliths on the housing, whereby high-temperature zones called "hot-spots" on the housing be avoided.
Gemäß einer anderen Ausführungsform kann die Lagermatte für jedes Distanzelement eine Aussparung aufweisen, in der das jeweilige Distanzelement angeordnet ist und von der aus sich das jeweilige Distanzelement axial zwischen den Monolithen radial nach innen erstreckt. Diese Bauweise vereinfacht die Montage, da zum einen die Distanzelemente dann eingesetzt werden können, wenn die Lagermatte bereits die Monolithen umhüllt. Zum anderen kann über die Positionierung der Aussparungen die gewünschte umfangsmäßige Verteilung der Distanzelemente vorgegeben werden, was ein ordnungsgemäßes Positionieren der Distanzelemente für den jeweiligen Monteur vereinfacht.According to another embodiment, the bearing mat for each spacer element having a recess in which the respective distance is arranged element and from which the respective spacer element extends axially inwardly between the monoliths. This design simplifies assembly, since on the one hand the spacer elements can be used when the bearing mat already covers the monoliths. On the other hand, the desired circumferential distribution of the spacer elements can be specified via the positioning of the recesses, which simplifies a proper positioning of the spacer elements for the respective fitter.
Weitere wichtige Merkmale und Vorteile der Erfindung ergeben sich aus den Unteransprüchen, aus den Zeichnungen und aus der zugehörigen Figurenbeschreibung anhand der Zeichnungen.Further important features and advantages of the invention will become apparent from the Dependent claims, from the drawings and from the associated description of the figures the drawings.
Es versteht sich, dass die vorstehend genannten und die nachstehend noch zu erläuternden Merkmale nicht nur in der jeweils angegebenen Kombination, sondern auch in anderen Kombinationen oder in Alleinstellung verwendbar sind, ohne den Rahmen der vorliegenden Erfindung zu verlassen.It it is understood that the above and the following yet to be explained features not only in the specified combination, but also in other combinations or alone, without to leave the scope of the present invention.
Ein bevorzugtes Ausführungsbeispiel der Erfindung ist in den Zeichnungen dargestellt und wird in der nachfolgenden Beschreibung näher erläutert, wobei sich gleiche Bezugszeichen auf gleiche oder funktional gleiche oder ähnliche Bauteile beziehen.One preferred embodiment The invention is illustrated in the drawings and is in the following description explains the same reference numerals to the same or functionally identical or similar Refer to components.
Es zeigen, jeweils schematisch,It show, in each case schematically,
Entsprechend
den
In
den Ansichten der
Die
beiden Monolithen
Vorzugsweise
wird ein solcher Mehrbettkatalysator
Zur
Lagerung der beiden Monolithen
Die
beiden Monolithen
Die
beiden Monolithen
Die
am Umfang der Monolithen
Die
Distanzelemente
Entsprechend
einer bevorzugten Ausführungsform
sind die Distanzelemente
Wie
insbesondere aus
Bei
der hier gezeigten, bevorzugten Ausführungsform besitzt die Lagermatte
Zu
diesem Zweck sind bei den hier gezeigten Ausführungsformen die Aussparungen
Zweckmäßig sind
die Distanzelemente
Der
zwischen den beiden Monolithen mit Hilfe der Distanzelemente
Claims (13)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10254036A DE10254036B4 (en) | 2002-11-20 | 2002-11-20 | More bed catalyst |
DE10301233A DE10301233A1 (en) | 2002-11-20 | 2003-01-15 | Multibed catalytic converter for combustion engine exhaust gas stream especially for a motor vehicle has serial catalytic monoliths separated and supported by distance elements |
DE50305163T DE50305163D1 (en) | 2002-11-20 | 2003-09-02 | More bed catalyst |
EP03019938A EP1422396B1 (en) | 2002-11-20 | 2003-09-02 | Multiple bed catalyst |
US10/683,755 US7247280B2 (en) | 2002-11-20 | 2003-10-10 | Multi-bed catalyzer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10254036A DE10254036B4 (en) | 2002-11-20 | 2002-11-20 | More bed catalyst |
Publications (2)
Publication Number | Publication Date |
---|---|
DE10254036A1 DE10254036A1 (en) | 2004-06-17 |
DE10254036B4 true DE10254036B4 (en) | 2005-08-04 |
Family
ID=32318558
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10254036A Expired - Fee Related DE10254036B4 (en) | 2002-11-20 | 2002-11-20 | More bed catalyst |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10254036B4 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004063546A1 (en) * | 2004-12-30 | 2006-07-13 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Honeycomb body with at least partially ceramic honeycomb structure and receptacle for measuring sensor |
DE102005051261A1 (en) * | 2005-10-26 | 2007-05-03 | Arvinmeritor Emissions Technologies Gmbh | exhaust gas purification device |
DE102007026108A1 (en) * | 2007-06-05 | 2008-12-11 | Robert Bosch Gmbh | Filter and catalyst element |
JP5616194B2 (en) * | 2010-01-14 | 2014-10-29 | 株式会社クボタ | Engine with exhaust treatment device |
US9752476B2 (en) | 2015-05-11 | 2017-09-05 | Faurecia Emissions Control Technologies, Usa, Llc | Apparatus for sizing a component shell having at least two different cross-sections |
US9833831B2 (en) | 2015-05-11 | 2017-12-05 | Faurecia Emissions Control Technologies, Usa, Llc | Apparatus for sizing a component shell having at least two different cross-sections |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2442488A1 (en) * | 1974-09-05 | 1976-03-18 | Daimler Benz Ag | DEVICE FOR CATALYTIC CLEANING OF EXHAUST GASES FROM COMBUSTION ENGINES, IN PARTICULAR COMBUSTION ENGINES |
DE3729994A1 (en) * | 1987-09-08 | 1989-03-16 | Bischoff Erhardt Gmbh Co Kg | Apparatus for the catalytic purification of exhaust gases |
DE4024015A1 (en) * | 1990-07-28 | 1992-02-06 | Boysen Friedrich Gmbh Co Kg | DEVICE FOR CATALYTIC CLEANING OR DISASSEMBLY OF HOT EXHAUST GAS |
DE19511503A1 (en) * | 1994-12-30 | 1996-07-04 | Eberspaecher J | Exhaust gas treatment device for IC engine - intermediate chamber between two gas treatment housings bounded on circumference by wire mat consisting of austenitic steel wire |
DE19743196A1 (en) * | 1997-09-30 | 1999-04-01 | Emitec Emissionstechnologie | Automotive catalytic converter has mantle lining compensating for differential radial forces |
-
2002
- 2002-11-20 DE DE10254036A patent/DE10254036B4/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2442488A1 (en) * | 1974-09-05 | 1976-03-18 | Daimler Benz Ag | DEVICE FOR CATALYTIC CLEANING OF EXHAUST GASES FROM COMBUSTION ENGINES, IN PARTICULAR COMBUSTION ENGINES |
DE3729994A1 (en) * | 1987-09-08 | 1989-03-16 | Bischoff Erhardt Gmbh Co Kg | Apparatus for the catalytic purification of exhaust gases |
DE4024015A1 (en) * | 1990-07-28 | 1992-02-06 | Boysen Friedrich Gmbh Co Kg | DEVICE FOR CATALYTIC CLEANING OR DISASSEMBLY OF HOT EXHAUST GAS |
DE19511503A1 (en) * | 1994-12-30 | 1996-07-04 | Eberspaecher J | Exhaust gas treatment device for IC engine - intermediate chamber between two gas treatment housings bounded on circumference by wire mat consisting of austenitic steel wire |
DE19743196A1 (en) * | 1997-09-30 | 1999-04-01 | Emitec Emissionstechnologie | Automotive catalytic converter has mantle lining compensating for differential radial forces |
Also Published As
Publication number | Publication date |
---|---|
DE10254036A1 (en) | 2004-06-17 |
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Legal Events
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---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |