DE102006021164A1 - Functional element in exhaust gas systems for internal combustion engines has functioning component consisting of sub-elements with separating layer between them, with partition sealed against separating layer - Google Patents
Functional element in exhaust gas systems for internal combustion engines has functioning component consisting of sub-elements with separating layer between them, with partition sealed against separating layer Download PDFInfo
- Publication number
- DE102006021164A1 DE102006021164A1 DE102006021164A DE102006021164A DE102006021164A1 DE 102006021164 A1 DE102006021164 A1 DE 102006021164A1 DE 102006021164 A DE102006021164 A DE 102006021164A DE 102006021164 A DE102006021164 A DE 102006021164A DE 102006021164 A1 DE102006021164 A1 DE 102006021164A1
- Authority
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- Germany
- Prior art keywords
- separating layer
- functional element
- feature
- element according
- elements
- 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.)
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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
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- 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
- F01N13/011—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 purifying devices arranged in parallel
- F01N13/017—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 purifying devices arranged in parallel 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
- 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
- F01N13/04—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 silencers in parallel, e.g. having interconnections for multi-cylinder 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
- 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
- F01N13/08—Other arrangements or adaptations of exhaust conduits
- F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
Die Erfindung betrifft Funktionselemente in Abgasanlagen für Verbrennungsmotoren gemäß dem Oberbegriff des Anspruchs 1.The The invention relates to functional elements in exhaust systems for internal combustion engines according to the generic term of claim 1.
Die Abgasanlagen von Verbrennungsmotoren sind seit vielen Jahren mit Katalysatoren oder Dieselrußpartikelfiltern ausgerüstet, die die schädlichen Bestandteile der Verbrennungsgase reduzieren bzw. ausfiltern. Katalysatoren müssen eine bestimmte Mindesttemperatur erreichen, bevor die katalytische Wirkung eintritt. Diese Mindesttemperatur soll nach dem Start des Motors möglichst schnell erreicht werden. Zu diesem Zweck werden Katalysatoren so nahe wie möglich am Motor positioniert. Verbrennungsmotoren besitzen eine Anzahl von Zylindern, beispielsweise 4, 5, 6, 8 usw. Die die Zylinder verlassenden Abgase werden von Krümmerrohren aufgenommen und dem Katalysator oder Dieselrußpartikelfilter zugeführt. Zu diesem Zweck werden die Krümmerrohre vor dem Katalysator- oder Filtergehäuse entweder einstufig oder auch mehrstufig vereinigt, so dass die Abgase aller Zylinder von einem einzigen Funktionselement gereinigt werden können.The Exhaust systems of internal combustion engines have been with for many years Catalysts or diesel soot particulate filters equipped, the harmful ones Reduce or filter out components of the combustion gases. catalysts have to reach a certain minimum temperature before the catalytic Effect occurs. This minimum temperature should after the start of the Motors as possible be reached quickly. For this purpose, catalysts become so close as possible positioned at the engine. Internal combustion engines have a number of cylinders, for example 4, 5, 6, 8 etc. leaving the cylinders Exhaust gases are from manifold pipes taken up and fed to the catalyst or diesel particulate filter. To this purpose, the manifold pipes in front of the catalyst or filter housing either one-stage or also united in several stages, so that the exhaust gases of all cylinders of a single functional element can be cleaned.
Diese Konstruktion hat jedoch den Nachteil, dass sie insbesondere Leistung und Drehmoment des Motors um so negativer beeinflusst, je kürzer die Krümmerrohre gewählt werden. Es wurde daher zunächst vorgeschlagen, in jedes Krümmerrohr einen eigenen Katalysator oder Filter einzubauen. Dadurch können Leistung und Drehmoment des Motors wieder angehoben werden; gleichzeitig steigen jedoch die Kosten der Konstruktion überproportional. Das ist unbefriedigend.These However, construction has the disadvantage that it has particular performance and torque of the engine influenced the more negative, the shorter the manifold pipes chosen become. It was therefore first proposed in each manifold pipe install your own catalyst or filter. This can be performance and torque of the engine to be raised again; simultaneously However, the cost of construction increase disproportionately. That is unsatisfactory.
Zur
Lösung
dieses Problems wurden dann sogenannte Split-Katalysatoren entwickelt.
Man vergleiche
Bei der Entwicklung dieser Split-Katalysatoren wurde jedoch übersehen, dass der zentrale Bereich des Katalysatorkörpers, auf dem die Dichtleiste aufliegt, nicht vom Abgas durchströmt wird. Gleichwohl ist dieser zentrale Bereich des Katalysatorkörpers mit den teuren Edelmetallen beschichtet. Das ist unbefriedigend.at however, the development of these split catalysts has been overlooked, that the central region of the catalyst body, on which the sealing strip rests, not flowed through by the exhaust gas becomes. However, this central region of the catalyst body is with the expensive precious metals coated. That is unsatisfactory.
Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, dieses Funktionselement derart zu verändern, dass bei gleichbleibender Leistung die Herstellung vereinfacht und die Herstellkosten gesenkt werden.Of the The present invention is therefore based on the object, this To change functional element in such a way that while maintaining the same performance the production simplifies and the production costs are lowered.
Diese Aufgabe wird gelöst durch ein Funktionselement mit den Merkmalen des Anspruchs 1.These Task is solved by a functional element having the features of claim 1.
Die vorliegende Erfindung setzt den Funktionskörper – Katalysator oder Dieselrußpartikelfilter – aus Teilelementen zusammen, zwischen denen eine Trennschicht angebracht wird, wobei diese Trennschicht gemäß einer bevorzugten Ausgestaltung der Erfindung gleichzeitig Kittschicht ist. Die Trennwand sitzt auf dieser Trennschicht auf. Dadurch wird eine absolute Trennung der Abgasströme erreicht, und zwar nicht nur bei Katalysatorkörpern mit durchgehenden Waben, sondern bei auch offenporigen Dieselrußpartikelfiltern.The The present invention sets the functional body - catalyst or diesel particulate filter - of sub-elements together, between which a release layer is attached, wherein this separation layer according to a preferred embodiment of the invention simultaneously cement layer is. The partition sits on this separation layer. This will achieved an absolute separation of the exhaust gas streams, and not only with catalyst bodies with continuous honeycomb, but also with open-pored Diesel soot particulate filters.
Falls eine katalytische Beschichtung vorgesehen ist, so befindet sich diese nur in den von Abgas durchströmten Teilelementen, wodurch die Kosten für die katalytische Edelmetallbeschichtung so niedrig wie möglich gehalten werden können.If a catalytic coating is provided so is located this only in the exhaust gas flowed through sub-elements, whereby the price for Keep the catalytic noble metal coating as low as possible can be.
Gemäß einer Ausgestaltung der Erfindung ist die Front der Trennschicht gegenüber der Front der Teilelemente zurückgesetzt. Dadurch wird eine durchgehende Vertiefung gebildet, die eine besonders sichere Positionierung der Trennwand ermöglicht.According to one Embodiment of the invention is the front of the release layer over the Reset front of subelements. As a result, a continuous recess is formed, which is a particular secure positioning of the partition allows.
Grundsätzlich ist es möglich, die Trennwand direkt auf die Trennschicht aufzusetzen, insbesondere wenn letztere aus einem abriebfesten Material besteht. Es ist jedoch ohne weiteres möglich, zwischen Trennwand und Trennschicht eine an sich bekannte Dichtung vorzusehen.Basically it is possible put the partition directly on the release layer, in particular if the latter consists of an abrasion-resistant material. However, it is readily possible, between partition and release layer a known seal provided.
Wie schon angedeutet, können die Teilelemente Keramikkörper sein. Alternativ können die Teilelemente auch Metallfolienkörper sein.As already indicated, can the partial elements ceramic body be. Alternatively you can the sub-elements also be metal foil body.
Zur Verwendung als Dieselrußpartikelfilter sind die Teilelemente offenporige Filterelemente.to Use as a diesel particulate filter the sub-elements open-pore filter elements.
Zur Verwendung als Katalysator sind die Teilelemente Wabenkörper.to Use as a catalyst, the sub-elements honeycomb body.
Anhand der Zeichnung soll die Erfindung anhand zweier Ausführungsbeispiele näher erläutert werden. Es zeigen jeweils rein schematischBased the drawing of the invention with reference to two embodiments be explained in more detail. They each show purely schematically
Im
Inneren des Split-Katalysatorgehäuses
Da
die Vereinigungsstelle
Es
versteht sich, dass anstelle der Zweifach-Eingangs- bzw. Ausgangskonen
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006021164A DE102006021164A1 (en) | 2005-08-05 | 2006-05-06 | Functional element in exhaust gas systems for internal combustion engines has functioning component consisting of sub-elements with separating layer between them, with partition sealed against separating layer |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200520012363 DE202005012363U1 (en) | 2005-08-05 | 2005-08-05 | Functional element in exhaust gas systems for internal combustion engines has functioning component consisting of sub-elements with separating layer between them, with partition sealed against separating layer |
DE202005012363.3 | 2005-08-05 | ||
DE102006021164A DE102006021164A1 (en) | 2005-08-05 | 2006-05-06 | Functional element in exhaust gas systems for internal combustion engines has functioning component consisting of sub-elements with separating layer between them, with partition sealed against separating layer |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102006021164A1 true DE102006021164A1 (en) | 2007-02-08 |
Family
ID=37670143
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102006021164A Withdrawn DE102006021164A1 (en) | 2005-08-05 | 2006-05-06 | Functional element in exhaust gas systems for internal combustion engines has functioning component consisting of sub-elements with separating layer between them, with partition sealed against separating layer |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102006021164A1 (en) |
-
2006
- 2006-05-06 DE DE102006021164A patent/DE102006021164A1/en not_active Withdrawn
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8139 | Disposal/non-payment of the annual fee |