EP2003301A1 - Exhaust treatment device - Google Patents
Exhaust treatment device Download PDFInfo
- Publication number
- EP2003301A1 EP2003301A1 EP08157392A EP08157392A EP2003301A1 EP 2003301 A1 EP2003301 A1 EP 2003301A1 EP 08157392 A EP08157392 A EP 08157392A EP 08157392 A EP08157392 A EP 08157392A EP 2003301 A1 EP2003301 A1 EP 2003301A1
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- EP
- European Patent Office
- Prior art keywords
- treatment device
- exhaust gas
- widening
- flange
- exhaust
- 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.)
- Granted
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Classifications
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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
- 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
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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
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1888—Construction facilitating manufacture, assembly, or disassembly the housing of the assembly consisting of two or more parts, e.g. two half-shells
Definitions
- the present invention relates to an exhaust gas treatment device for an exhaust system of an internal combustion engine, which is arranged in particular in a motor vehicle.
- Exhaust gas treatment devices such as catalysts and particulate filters, usually have a tubular housing, which can be configured basically in shell construction and optionally has two half-shells which are fastened to each other along two opposite longitudinal sides along outwardly projecting flange webs, for example by means of a weld.
- This housing serves to receive at least one exhaust gas treatment insert through which exhaust gas can flow, which can be, for example, a ceramic monolith.
- a bearing mat can be provided for fixing the position of the exhaust gas treatment insert in the housing, which coaxially surrounds the respective exhaust gas treatment insert, which consists of a bearing material and which is pressed radially between the respective exhaust gas treatment insert and the housing.
- the respective, with the bearing mat wrapped exhaust treatment insert is inserted into one of the half-shells, then the other half-shell is placed to secure the two half-shells together.
- the half shells must be pressed radially towards each other in order to achieve the radial compression of the bearing mat.
- This type of introduction of exhaust treatment inserts in a housing may be referred to as "half shell scanning". It has been found that in half-shell scanning in particular when the bearing mat to achieve the desired radial compression in its thickness direction has an excess over the formed between the housing and the exhaust treatment insert radial gap, bearing material can penetrate between the Flanschstegen, resulting in errors in the particular can lead to automated production.
- a weld for connecting the flange webs can not be performed properly.
- a welding robot can report an error and remain stationary if the flange webs to be welded together do not abut each other due to the intermediate bearing material. In this case, the stock material must then be replenished manually until it is removed from the region lying between the flange webs. Production interruptions and manual rework increased the cost of production.
- the present invention deals with the problem for an exhaust gas treatment device of the aforementioned Specify an improved embodiment, which is characterized in particular by the fact that their production is relatively inexpensive feasible.
- an improved embodiment which is characterized in particular by the fact that their production is relatively inexpensive feasible.
- in the manufacture of a penetration of bearing material in the area between each other on the same longitudinal side opposite flange webs should be avoided.
- the invention is based on the general idea of providing an escape space on the housing side in the region of the flange webs opposite the same longitudinal side, into which the bearing mat can yield during the pressing of the half-shells.
- This additional space is provided in a flange flange having the flange.
- the respective escape space is created in that, at least in one half shell, at least one longitudinal side in the respective flange region is widened, that is to say a local increase in diameter for receiving bearing material. Such expansion can be particularly easy to bring in the production of the respective half-shell, whereby no additional manufacturing step is required.
- each half shell in the respective flange region can each have such a widening on the respective longitudinal side, which together form a receiving zone or pocket.
- the two expansions thus work together to create the necessary alternative space together.
- a symmetrical arrangement of the escape space is realized in the flange area, which is advantageous for receiving the bearing material during the pressing of the half-shells.
- FIG. 1 includes an exhaust gas treatment device 1, which may be, for example, a particulate filter or a catalyst, a housing 2, an exhaust gas treatment insert 3 and a bearing mat 4.
- the exhaust gas treatment device 1 is for installation in an exhaust system of an internal combustion engine, which is arranged in particular in a motor vehicle can be.
- the housing 2 is designed tubular and is realized in half-shell construction, so that it has two half-shells 5 and 6.
- the half-shells 5, 6 are attached to each other at two, in particular diametrically opposite, longitudinal sides.
- each half-shell 5, 6 in the region of these longitudinal sides each have a flange web 7 or 8, which in each case protrudes from the respective half-shell 5, 6 to the outside, preferably radially.
- the respective longitudinal sides of the two flange webs 7, 8 are directly adjacent to each other.
- the attachment of the two half shells 5, 6 to each other for example, by means of continuous welds, which connect the abutting flange webs 7, 8 together.
- the half-shells 5, 6 may expediently be designed as identical parts.
- the half-shells 5, 6 extend in the profile of the housing 2 in each case by about 180 °.
- the exhaust gas treatment insert 3 is traversed by the exhaust gas and is arranged in the housing 2.
- the exhaust treatment insert 3 may be a catalyst insert or a particulate filter cartridge. It is clear that more than one exhaust gas treatment insert 3 can in principle be arranged in the housing 2, with a plurality of exhaust gas treatment inserts 3 then being arranged expediently in succession in the axial direction.
- the exhaust gas treatment insert 3 can be made in particular of ceramic. Further, the exhaust treatment insert 3 may be configured as a monolith.
- the bearing mat 4 consists of a more suitable bearing material. For example, swelling mats and fiber mats made of heat-resistant materials are known.
- the bearing mat 4 envelops the respective exhaust gas treatment insert 3 in the circumferential direction, ie coaxially and is in the shown installed state radially between the respective exhaust gas treatment insert 3 and the housing 2.
- the bearing mat 4 is radially compressed in the installed state. This radial compression must be generated during manufacture of the exhaust gas treatment device 1 and takes place when the half shells 5, 6 are pressed against one another on the longitudinal sides in the respective flange region 9 or 10 marked by a brace directly abutting each other.
- At least one of the half-shells 5, 6 has an expansion 11 on at least one longitudinal side of the housing 2 in the respective flange region 9, 10, which serves to receive bearing material.
- the respective half-shell 5, 6 each have such a widening 11 on both longitudinal sides.
- both half-shells 5, 6 can each be equipped with such a widening 11 on the respective longitudinal side.
- both half-shells 5, 6 on both longitudinal sides in each case such a widening 11.
- the widenings 11 formed on the two half shells 5, 6 are configured such that they cooperate on the respective longitudinal side or in the respective flange region 9, 10 in such a way that they together form a receiving zone 12, which can also be referred to as a receiving pocket 12 or short pocket 12.
- a symmetrical design is preferred, so that the two widenings 11 of the respective pocket 12 are designed mirror-symmetrically in profile with respect to a plane 13.
- this plane 13 the flange webs 7, 8 of the respective flange 9, 10 abut each other.
- This plane 13 can in particular form the parting plane of the half-shells 5, 6.
- the widenings 11 are characterized in that a radial distance 14 between the housing 2 and the exhaust gas treatment insert 3 within the widening 11 is greater than in the circumferential direction next to the widening 11.
- the respective expansion 11 is expediently shaped so that it merges in the circumferential direction in the respective flange web 7, 8. This transition can be done in profile with a circular arc segment 15. Furthermore, the respective widening 11 in the profile away from the respective flange web 7, 8 can preferably pass smoothly into the adjoining conventional contour of the respective half shell 5, 6. Between the transition to the contour of the remaining half shell 5, 6 and the transition to the respective flange web 7, 8, the respective expansion 11 may have a straight section in profile, which may be oriented tangentially, for example.
- the respective expansion 11 is dimensioned in the radial direction and / or in the circumferential direction so that sufficient escape space for the bearing material is created, so that the risk of compression of bearing material between the flange webs 7, 8 is reduced.
- This risk exists during manufacture when the respective exhaust gas treatment insert 3 with the bearing mat 4 enveloping it is inserted into the one half shell 6 and the other half shell 5 must be pressed in order to abut the flange webs 7, 8 in the flange regions 9, 10 bring to. Since the bearing mat 4 must be pressed radially to achieve its fixing effect, this compression takes place in particular when pressing the half-shells 5, 6 together.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (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
Description
Die vorliegende Erfindung betrifft eine Abgasbehandlungseinrichtung für eine Abgasanlage einer Brennkraftmaschine, die insbesondere in einem Kraftfahrzeug angeordnet ist.The present invention relates to an exhaust gas treatment device for an exhaust system of an internal combustion engine, which is arranged in particular in a motor vehicle.
Abgasbehandlungseinrichtungen, wie zum Beispiel Katalysatoren und Partikelfilter, besitzen üblicherweise ein rohrförmiges Gehäuse, das grundsätzlich in Schalenbauweise ausgestaltet sein kann und gegebenenfalls zwei Halbschalen aufweist, die an zwei einander gegenüberliegenden Längsseiten jeweils entlang von nach außen abstehenden Flanschstegen aneinander befestigt sind, beispielsweise mittels einer Schweißnaht. Dieses Gehäuse dient zur Aufnahme wenigstens eines, von Abgas durchströmbaren Abgasbehandlungseinsatzes, bei dem es sich beispielsweise um einen keramischen Monolithen handeln kann. Ferner kann zur Lagefixierung des Abgasbehandlungseinsatzes im Gehäuse eine Lagermatte vorgesehen sein, die den jeweiligen Abgasbehandlungseinsatz koaxial umhüllt, die aus einem Lagermaterial besteht und die radial zwischen dem jeweiligen Abgasbehandlungseinsatz und dem Gehäuse verpresst ist.Exhaust gas treatment devices, such as catalysts and particulate filters, usually have a tubular housing, which can be configured basically in shell construction and optionally has two half-shells which are fastened to each other along two opposite longitudinal sides along outwardly projecting flange webs, for example by means of a weld. This housing serves to receive at least one exhaust gas treatment insert through which exhaust gas can flow, which can be, for example, a ceramic monolith. Furthermore, a bearing mat can be provided for fixing the position of the exhaust gas treatment insert in the housing, which coaxially surrounds the respective exhaust gas treatment insert, which consists of a bearing material and which is pressed radially between the respective exhaust gas treatment insert and the housing.
Beim Herstellen derartiger Abgasbehandlungseinrichtungen wird der jeweilige, mit der Lagermatte umwickelte Abgasbehandlungseinsatz in eine der Halbschalen eingelegt, dann wird die andere Halbschale aufgesetzt, um die beiden Halbschalen aneinander zu befestigen. Hierzu müssen die Halbschalen radial aufeinander zu gedrückt werden, um die radiale Verpressung der Lagermatte zu erzielen. Diese Art der Einbringung von Abgasbehandlungseinsätzen in einem Gehäuse kann als "Halbschalencanning" bezeichnet werden. Es hat sich gezeigt, dass beim Halbschalencanning insbesondere dann, wenn die Lagermatte zur Erzielung der gewünschten radialen Verpressung in ihrer Dickenrichtung ein Übermaß gegenüber dem zwischen dem Gehäuse und dem Abgasbehandlungseinsatz ausgebildeten Radialspalt besitzt, Lagermaterial zwischen den Flanschstegen eindringen kann, was zu Fehlern in der insbesondere automatisierten Produktion führen kann. Beispielsweise kann eine Schweißnaht zum Verbinden der Flanschstege nicht ordnungsgemäß durchgeführt werden. Beispielsweise kann ein Schweißroboter einen Fehler melden und stehen bleiben, wenn die miteinander zu verschweißenden Flanschstege durch das zwischenliegende Lagermaterial nicht aneinander anliegen. In diesem Fall muss dann das Lagermaterial manuell nachgestopft werden, bis es aus dem zwischen den Flanschstegen liegenden Bereich entfernt ist. Produktionsunterbrechungen sowie manuelle Nachbesserungen erhöhten die Kosten der Herstellung.In producing such exhaust gas treatment devices, the respective, with the bearing mat wrapped exhaust treatment insert is inserted into one of the half-shells, then the other half-shell is placed to secure the two half-shells together. For this purpose, the half shells must be pressed radially towards each other in order to achieve the radial compression of the bearing mat. This type of introduction of exhaust treatment inserts in a housing may be referred to as "half shell scanning". It has been found that in half-shell scanning in particular when the bearing mat to achieve the desired radial compression in its thickness direction has an excess over the formed between the housing and the exhaust treatment insert radial gap, bearing material can penetrate between the Flanschstegen, resulting in errors in the particular can lead to automated production. For example, a weld for connecting the flange webs can not be performed properly. For example, a welding robot can report an error and remain stationary if the flange webs to be welded together do not abut each other due to the intermediate bearing material. In this case, the stock material must then be replenished manually until it is removed from the region lying between the flange webs. Production interruptions and manual rework increased the cost of production.
Die vorliegende Erfindung beschäftigt sich mit dem Problem, für eine Abgasbehandlungseinrichtung der eingangs genannten Art eine verbesserte Ausführungsform anzugeben, die sich insbesondere dadurch auszeichnet, dass ihre Herstellung vergleichsweise preiswert realisierbar ist. Insbesondere soll beim Herstellen ein Eindringen von Lagermaterial in den Bereich zwischen einander an der gleichen Längsseite gegenüberliegenden Flanschstegen vermieden werden.The present invention deals with the problem for an exhaust gas treatment device of the aforementioned Specify an improved embodiment, which is characterized in particular by the fact that their production is relatively inexpensive feasible. In particular, in the manufacture of a penetration of bearing material in the area between each other on the same longitudinal side opposite flange webs should be avoided.
Dieses Problem wird erfindungsgemäß durch den Gegenstand des unabhängigen Anspruchs gelöst. Vorteilhafte Ausführungsformen sind Gegenstand der abhängigen Ansprüche.This problem is solved according to the invention by the subject matter of the independent claim. Advantageous embodiments are the subject of the dependent claims.
Die Erfindung beruht auf dem allgemeinen Gedanken, im Bereich der sich an der gleichen Längsseite gegenüberliegenden Flanschstege gehäuseseitig einen Ausweichraum bereitzustellen, in den die Lagermatte beim Verpressen der Halbschalen ausweichen kann. Dieser zusätzliche Raum wird dabei in einem die Flanschstege aufweisenden Flanschbereich vorgesehen. Durch diese Bauweise wird erreicht, dass beim Aufeinanderdrücken der Halbschalen das im Flanschbereich radial ausweichende Lagermaterial in diesem Flanschbereich genügend Raum zur Verfügung hat, in den es Eindringen kann, wodurch die Gefahr, dass Lagermaterial zwischen die Flanschstege gelangt, reduziert ist. Bei entsprechender Dimensionierung des zusätzlich geschaffenen Raums kann ein Eindringen und Verpressen des Lagermaterials zwischen den an der gleichen Längsseite einander gegenüberliegenden Flanschstegen weitgehend vermieden werden. Dementsprechend vereinfacht sich die automatische Produktion. Fehler beim Schweißen der Flanschstege lassen sich entsprechend reduzieren, wodurch die Herstellung der Abgasbehandlungseinrichtung preiswerter wird. Der jeweilige Ausweichraum wird erfindungsgemäß dadurch geschaffen, dass zumindest bei einer Halbschale an wenigstens einer Längsseite im jeweiligen Flanschbereich eine Aufweitung, also eine lokale Durchmesservergrößerung zur Aufnahme von Lagermaterial ausgebildet ist. Eine derartige Aufweitung lässt sich besonders einfach bei der Herstellung der jeweiligen Halbschale einbringen, wodurch kein zusätzlicher Herstellungsschritt erforderlich ist.The invention is based on the general idea of providing an escape space on the housing side in the region of the flange webs opposite the same longitudinal side, into which the bearing mat can yield during the pressing of the half-shells. This additional space is provided in a flange flange having the flange. By this construction it is achieved that when pressing the half-shells in the flange radially evasive bearing material in this flange area has enough space available, in which it can penetrate, whereby the risk that bearing material passes between the flange webs, is reduced. With appropriate dimensioning of the additional space created intrusion and compression of the bearing material between the on the same longitudinal side opposite flange webs can be largely avoided. Accordingly, the automatic production is simplified. Errors in welding the flange webs can be correspondingly reduced, thereby reducing the production the exhaust treatment device is cheaper. According to the invention, the respective escape space is created in that, at least in one half shell, at least one longitudinal side in the respective flange region is widened, that is to say a local increase in diameter for receiving bearing material. Such expansion can be particularly easy to bring in the production of the respective half-shell, whereby no additional manufacturing step is required.
Gemäß einer vorteilhaften Ausführungsform können an der jeweiligen Längsseite beide Halbschalen im jeweiligen Flanschbereich je eine solche Aufweitung aufweisen, die zusammen eine Aufnahmezone oder -tasche bilden. Die beiden Aufweitungen wirken somit zusammen, um gemeinsam den erforderlichen Ausweichraum zu schaffen. Gleichzeitig wird hierdurch eine symmetrische Anordnung des Ausweichraums im Flanschbereich realisiert, was vorteilhaft für die Aufnahme des Lagermaterials beim Verpressen der Halbschalen ist.According to an advantageous embodiment, each half shell in the respective flange region can each have such a widening on the respective longitudinal side, which together form a receiving zone or pocket. The two expansions thus work together to create the necessary alternative space together. At the same time thereby a symmetrical arrangement of the escape space is realized in the flange area, which is advantageous for receiving the bearing material during the pressing of the half-shells.
Weitere wichtige Merkmale und Vorteile der Erfindung ergeben sich aus den Unteransprüchen, aus den Zeichnungen und aus der zugehörigen Figurenbeschreibung anhand der Zeichnungen.Other important features and advantages of the invention will become apparent from the dependent claims, from the drawings and from the associated figure description with reference to 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 is understood that the features mentioned above and those yet to be explained below can be used not only in the particular combination given, but also in other combinations or in isolation, without departing from the scope of the present invention.
Bevorzugte Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden in der nachfolgenden Beschreibung näher erläutert, wobei sich gleiche Bezugszeichen auf gleiche oder ähnliche oder funktional gleiche Bauteile beziehen.Preferred embodiments of the invention are illustrated in the drawings and will be described in more detail in the following description, wherein like reference numerals refer to the same or similar or functionally identical components.
Es zeigen, jeweils schematisch,
- Fig. 1
- einen vereinfachten Querschnitt durch eine Abgasbehandlungseinrichtung,
- Fig. 2
- ein vergrößertes Detail II aus
Fig. 1 in einem Flanschbereich.
- Fig. 1
- a simplified cross section through an exhaust gas treatment device,
- Fig. 2
- an enlarged detail II
Fig. 1 in a flange area.
Entsprechend
Das Gehäuse 2 ist rohrförmig ausgestaltet und ist in Halbschalenbauweise realisiert, so dass es zwei Halbschalen 5 und 6 aufweist. Die Halbschalen 5, 6 sind an zwei einander, insbesondere diametral, gegenüberliegenden Längsseiten, aneinander befestigt. Hierzu weist jede Halbschale 5, 6 im Bereich dieser Längsseiten jeweils einen Flanschsteg 7 beziehungsweise 8 auf, der jeweils von der jeweiligen Halbschale 5, 6 nach außen absteht, und zwar vorzugsweise radial. Im Idealfall liegen die jeweiligen Längsseiten der beiden Flanschstege 7, 8 unmittelbar aneinander an. Die Befestigung der beiden Halbschalen 5, 6 aneinander erfolgt beispielsweise mittels durchgehender Schweißnähte, welche die aneinander anliegenden Flanschstege 7, 8 miteinander verbinden. Die Halbschalen 5, 6 können zweckmäßig als Gleichteile ausgestaltet sein. Die Halbschalen 5, 6 strecken sich dabei im Profil des Gehäuses 2 jeweils um etwa 180°.The
Der Abgasbehandlungseinsatz 3 ist vom Abgas durchströmbar und ist im Gehäuse 2 angeordnet. Beim Abgasbehandlungseinsatz 3 kann es sich um einen Katalysatoreinsatz oder um einen Partikelfiltereinsatz handeln. Es ist klar, dass im Gehäuse 2 grundsätzlich auch mehr als ein Abgasbehandlungseinsatz 3 angeordnet sein kann, wobei mehrere Abgasbehandlungseinsätze 3 dann zweckmäßig in axialer Richtung hintereinander angeordnet sind. Der Abgasbehandlungseinsatz 3 kann dabei insbesondere aus Keramik hergestellt sein. Ferner kann der Abgasbehandlungseinsatz 3 als Monolith ausgestaltet sein.The exhaust
Die Lagermatte 4 besteht aus einem geeignetere Lagermaterial. Bekannt sind beispielsweise Quellmatten und Fasermatten aus hitzebeständigen Materialien. Die Lagermatte 4 umhüllt den jeweiligen Abgasbehandlungseinsatz 3 in Umfangsrichtung, also koaxial und befindet sich im gezeigten eingebauten Zustand radial zwischen dem jeweiligen Abgasbehandlungseinsatz 3 und dem Gehäuse 2. Um die gewünschte Lagefixierung, insbesondere auch in axialer Richtung, zwischen dem Abgasbehandlungseinsatz 3 und dem Gehäuse 2 zu erzielen, ist die Lagermatte 4 im Einbauzustand radial verpresst. Diese radiale Verpressung muss beim Herstellen der Abgasbehandlungseinrichtung 1 erzeugt werden und erfolgt beim Gegeneinanderdrücken der Halbschalen 5, 6, um an den Längsseiten im jeweiligen, durch eine geschweifte Klammer gekennzeichneten Flanschbereich 9 beziehungsweise 10 die beiden Flanschstege 7, 8 unmittelbar aneinander zur Anlage zu bringen.The bearing
Entsprechend den
Entsprechend
Bevorzugt wird hierbei eine symmetrische Bauweise, so dass die beiden Aufweitungen 11 der jeweiligen Tasche 12 im Profil bezüglich einer Ebene 13 spiegelsymmetrisch gestaltet sind. In dieser Ebene 13 liegen die Flanschstege 7, 8 des jeweiligen Flanschbereichs 9, 10 aneinander an. Diese Ebene 13 kann insbesondere die Trennebene der Halbschalen 5, 6 bilden.In this case, a symmetrical design is preferred, so that the two
Entsprechend
Die jeweilige Aufweitung 11 ist zweckmäßig so geformt, dass sie in Umfangsrichtung in den jeweiligen Flanschsteg 7, 8 übergeht. Dieser Übergang kann dabei im Profil mit einem Kreisbogensegment 15 erfolgen. Ferner kann die jeweilige Aufweitung 11 im Profil entfernt vom jeweiligen Flanschsteg 7, 8 vorzugsweise stufenlos in die daran anschließende übliche Kontur der jeweiligen Halbschale 5, 6 übergehen. Zwischen dem Übergang zur Kontur der übrigen Halbschale 5, 6 und dem Übergang zum jeweiligen Flanschsteg 7, 8 kann die jeweiligen Aufweitung 11 einen im Profil geradlinigen Abschnitt aufweisen, der beispielsweise tangential orientiert sein kann.The
Die jeweilige Aufweitung 11 ist in radialer Richtung und/oder in Umfangsrichtung so dimensioniert, dass ausreichend Ausweichraum für das Lagermaterial geschaffen wird, so dass die Gefahr einer Verpressung von Lagermaterial zwischen den Flanschstegen 7, 8 reduziert ist. Diese Gefahr besteht während der Herstellung dann, wenn der jeweilige Abgasbehandlungseinsatz 3 mit der ihn umhüllenden Lagermatte 4 in die eine Halbschale 6 eingesetzt ist und die andere Halbschale 5 aufgepresst werden muss, um die Flanschstege 7, 8 in den Flanschbereichen 9, 10 aneinander zur Anlage zu bringen. Da die Lagermatte 4 zur Erzielung ihrer Fixierungswirkung radial verpresst werden muss, erfolgt diese Verpressung insbesondere auch beim Anpressen der Halbschalen 5, 6 aneinander. Dabei zeigt sich eine Neigung der Lagermatte 4, im Flanschbereich in radialer Richtung auszuweichen beziehungsweise radial herauszuquellen oder sich radial aufzustauen. Mit Hilfe der Aufweitungen 11 beziehungsweise der Taschen 12 wird nun hinreichend Ausweichraum geschaffen, der das Ausweichen, Quellen und Stauen des Lagermaterials ermöglicht, ohne dass dabei das Lagermaterial bis zwischen die Flanschstege 7, 8 gelangt. Der Herstellungsprozess wird dadurch sicherer und leichter beherrschbar, wodurch die Produktion der Abgasbehandlungseinrichtungen 1 preiswerter wird.The
Claims (10)
dadurch gekennzeichnet,
dass sich die jeweilige Aufweitung (11) dadurch charakterisiert, dass ein radialer Abstand (14) zwischen dem Gehäuse (2) und dem jeweiligen Abgasbehandlungseinsatz (3) in der Aufweitung (11) größer ist als in Umfangsrichtung neben der Aufweitung (11).Exhaust treatment device according to claim 1,
characterized,
that the respective widening (11) is characterized in that a radial distance (14) between the housing (2) and the respective exhaust gas treatment insert (3) in the Expansion (11) is greater than in the circumferential direction next to the expansion (11).
dadurch gekennzeichnet,
dass die jeweilige Aufweitung (11) in Umfangsrichtung in den jeweiligen Flanschsteg (7, 8) übergeht.Exhaust treatment device according to claim 1 or 2,
characterized,
that the respective widening (11) merges in the circumferential direction into the respective flange web (7, 8).
dadurch gekennzeichnet,
dass die jeweilige Aufweitung (11) im Profil mit einem Kreisbogensegment (15) in den jeweiligen Flanschsteg (7, 8) übergeht.Exhaust treatment device according to one of claims 1 to 3,
characterized,
that the respective widening (11) in profile merges with a circular arc segment (15) into the respective flange web (7, 8).
dadurch gekennzeichnet,
dass die jeweilige Aufweitung (11) im Profil in einem vom jeweiligen Flanschsteg (7, 8) entfernten Abschnitt stufenlos in die daran in Umfangsrichtung anschließende Kontur der jeweiligen Halbschale (5, 6) übergeht.Exhaust treatment device according to one of claims 1 to 4,
characterized,
that the respective widening (11) in profile in a the respective flange web (7, 8) continuously in the distal portion adjoining in the circumferential direction contour of the respective half-shell (5, 6) passes.
dadurch gekennzeichnet,
dass die jeweilige Halbschale (5, 6) an beiden Längsseiten je eine solche Aufweitung (11) aufweist.Exhaust treatment device according to one of claims 1 to 5,
characterized,
that the respective half-shell (5, 6) has on both longitudinal sides each such a widening (11).
dadurch gekennzeichnet,
dass an der jeweiligen Längsseite beide Halbschalen (5, 6) im jeweiligen Flanschbereich (9, 10) je eine solche Aufweitung (11) aufweisen, die zusammen eine Aufnahmezone (12) oder Tasche (12) bilden.Exhaust treatment device according to one of claims 1 to 6,
characterized,
that on the respective longitudinal side both half-shells (5, 6) in the respective flange region (9, 10) each have such a widening (11), which together form a receiving zone (12) or pocket (12).
dadurch gekennzeichnet,
dass beide Halbschalen (5, 6) an beiden Längsseiten je eine solche Aufweitung (11) aufweisen, die an jeder Längsseite zusammen je eine Aufnahmezone (12) oder Tasche (12) bilden.Exhaust treatment device according to one of claims 1 to 7,
characterized,
that both half-shells (5, 6) each have such a widening (11) on both longitudinal sides, which on each longitudinal side together form a respective receiving zone (12) or pocket (12).
dadurch gekennzeichnet,
dass die beiden Aufweitungen (11) der Tasche (12) im Profil bezüglich einer Ebene (13), in der die Flanschstege (7, 8) aneinander anliegen, spiegelsymmetrisch gestaltet sind.Exhaust treatment device according to claim 7 or 8,
characterized,
that the two widenings (11) of the pocket (12) in profile with respect to a plane (13) in which the flange webs (7, 8) abut each other, are designed mirror-symmetrically.
dadurch gekennzeichnet,
dass der jeweilige Abgasbehandlungseinsatz (3) ein Katalysatoreinsatz oder ein Partikelfiltereinsatz ist, der insbesondere aus Keramik hergestellt sein kann und/oder der vorzugsweise als Monolith ausgestaltet sein kann.Exhaust treatment device according to one of claims 1 to 9,
characterized,
in that the respective exhaust gas treatment insert (3) is a catalyst insert or a particle filter insert, which may in particular be made of ceramic and / or which may preferably be designed as a monolith.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200710028326 DE102007028326A1 (en) | 2007-06-15 | 2007-06-15 | Exhaust gas treatment device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2003301A1 true EP2003301A1 (en) | 2008-12-17 |
| EP2003301B1 EP2003301B1 (en) | 2019-03-20 |
Family
ID=39745130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP08157392.5A Active EP2003301B1 (en) | 2007-06-15 | 2008-06-02 | Exhaust treatment device |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP2003301B1 (en) |
| DE (1) | DE102007028326A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01203610A (en) * | 1988-02-09 | 1989-08-16 | Yutaka Giken Co Ltd | Catalytic converter |
| DE3922667A1 (en) * | 1989-03-17 | 1990-09-27 | Eberspaecher J | Catalytic exhaust system for vehicle - incorporates elastic retainers to join inner and outer shells |
| DE4236893A1 (en) * | 1991-11-16 | 1993-05-19 | Volkswagen Ag | Exhaust gas system for internal combustion engines - has exhaust pipes leading from cylinder head exhaust duct and catalytic converter arrangement |
| WO2000039437A1 (en) * | 1998-12-28 | 2000-07-06 | Corning Incorporated | A converter for use in the treatment of gases |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6032336Y2 (en) * | 1980-04-26 | 1985-09-27 | ダイハツ工業株式会社 | Outer cover device for exhaust gas purification device in internal combustion engine |
| DE4427459A1 (en) * | 1994-08-03 | 1996-02-08 | Roth Technik Gmbh | IC engine exhaust layout with silencer |
| JP3660031B2 (en) * | 1995-10-16 | 2005-06-15 | 本田技研工業株式会社 | Catalytic converter |
-
2007
- 2007-06-15 DE DE200710028326 patent/DE102007028326A1/en not_active Withdrawn
-
2008
- 2008-06-02 EP EP08157392.5A patent/EP2003301B1/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01203610A (en) * | 1988-02-09 | 1989-08-16 | Yutaka Giken Co Ltd | Catalytic converter |
| DE3922667A1 (en) * | 1989-03-17 | 1990-09-27 | Eberspaecher J | Catalytic exhaust system for vehicle - incorporates elastic retainers to join inner and outer shells |
| DE4236893A1 (en) * | 1991-11-16 | 1993-05-19 | Volkswagen Ag | Exhaust gas system for internal combustion engines - has exhaust pipes leading from cylinder head exhaust duct and catalytic converter arrangement |
| WO2000039437A1 (en) * | 1998-12-28 | 2000-07-06 | Corning Incorporated | A converter for use in the treatment of gases |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102007028326A1 (en) | 2008-12-18 |
| EP2003301B1 (en) | 2019-03-20 |
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