WO2014023548A1 - Device for guiding a gas stream - Google Patents

Device for guiding a gas stream Download PDF

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Publication number
WO2014023548A1
WO2014023548A1 PCT/EP2013/065181 EP2013065181W WO2014023548A1 WO 2014023548 A1 WO2014023548 A1 WO 2014023548A1 EP 2013065181 W EP2013065181 W EP 2013065181W WO 2014023548 A1 WO2014023548 A1 WO 2014023548A1
Authority
WO
WIPO (PCT)
Prior art keywords
shell
shell part
gas flow
outlet opening
inlet opening
Prior art date
Application number
PCT/EP2013/065181
Other languages
German (de)
French (fr)
Inventor
Franz Ramusch
Michael SCHLEH
Frank Buehler
Original Assignee
Friedrich Boysen Gmbh & Co. Kg
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Friedrich Boysen Gmbh & Co. Kg filed Critical Friedrich Boysen Gmbh & Co. Kg
Priority to US14/373,309 priority Critical patent/US20150135692A1/en
Priority to BR112014011827A priority patent/BR112014011827A2/en
Priority to CN201380004351.3A priority patent/CN104066948A/en
Publication of WO2014023548A1 publication Critical patent/WO2014023548A1/en

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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
    • 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
    • F01N3/08—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
    • F01N3/2892—Exhaust flow directors or the like, e.g. upstream of catalytic device
    • 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
    • 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
    • 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
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • 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
    • F01N13/18—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
    • 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
    • F01N13/18—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
    • F01N13/1894—Construction facilitating manufacture, assembly, or disassembly the housing of the assembly consisting of two or more parts, e.g. two half-shells the parts being assembled in longitudinal direction
    • 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
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/20—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a flow director or deflector
    • 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
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/18—Methods or apparatus for fitting, inserting or repairing different elements by using quick-active type locking mechanisms, e.g. clips
    • 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
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/30—Removable or rechangeable blocks or cartridges, e.g. for 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
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/22—Inlet and outlet tubes being positioned on the same side of the apparatus

Definitions

  • the present invention relates to a device for guiding a gas flow, in particular an exhaust gas flow of an internal combustion engine, with a shell, which defines an inlet opening, an outlet opening and at least one deflection which deflects the gas flow.
  • a device for guiding a gas flow in particular an exhaust gas flow of an internal combustion engine
  • a shell which defines an inlet opening, an outlet opening and at least one deflection which deflects the gas flow.
  • Such Umlenkschalen can be used in particular between two exhaust system elements, for example between a particulate filter and an exhaust pipe or see between an exhaust pipe and a catalyst.
  • the shell is composed of a first shell part and a second shell part, wherein the first shell part defines the inlet opening and the outlet opening and at least one connection structure for gas-tight connection of the device with another gas guide component, and wherein the second shell part for enclosing the inlet opening and the Outlet opening of the first shell part is formed.
  • the shell carrying the gas stream is thus not carried out in one piece, but at least in two parts, for example in the form of two half shells, wherein a shell part is formed for gas-tight connection to the preceding and / or the subsequent gas guide component and the second shell part forms a kind of cover.
  • a connection structure is provided both at the inlet opening and at the outlet opening.
  • the first shell part can also be made in two parts, so that, for example, the inlet opening and the outlet opening are formed in different components. Since the connection structures, which may in particular be flanges, are already provided on the first shell part, a subsequent welding of flanges can be dispensed with. This has the particular advantage that no welding distortion occurs.
  • connection structure may in particular be formed integrally with the first shell part, in particular formed on this.
  • the connection structure may in particular be formed integrally with the first shell part, in particular formed on this.
  • the number of required components and the number of welds can be reduced. Direct molding of a flange to a tubular shell can be difficult.
  • the first shell part may have a relatively flat shape, whereby the molding of the connection structure is facilitated.
  • connection structure comprises a flange, in particular a clamping flange.
  • a flange in particular a clamping flange.
  • connection structure may comprise a pipe socket extending parallel to the flow direction of the gas flow. This facilitates the assembly of the deflection device.
  • the pipe socket could be plugged or plugged into a counter-pipe socket, which in turn is provided on the preceding or succeeding gas-conducting component, e.g. protrudes from a catalyst or a particulate filter.
  • the pipe socket widens in a respect to the shell facing outward direction.
  • Such an extension of the pipe socket forms by itself Flange, which can be adapted in a special way to a counterpart of a continuing exhaust system component.
  • the pipe socket is formed as a passage in a deep-drawing process and has in particular as an extension on an end tilting.
  • the tilting can advantageously form a flange for a V band clamp.
  • the first shell part is plate-shaped, while the second shell part is hood-shaped.
  • the shell defines two consecutive bends, which preferably deflect the gas flow by 90 ° in each case.
  • the two bends preferably act in the same direction, ie the gas guiding device forms a channel arrangement C-shaped in longitudinal section.
  • the invention also relates to an exhaust system, in particular for an internal combustion engine, having a device as described above.
  • the invention will now be described by way of example with reference to the drawings.
  • FIG. 4 is a side elevational view in longitudinal section of the apparatus for guiding a gas flow shown in FIG.
  • FIG. 12 is a perspective view of a first shell part of a shell of the apparatus for guiding a gas flow shown in FIG.
  • an exhaust system of an internal combustion engine includes a diesel particulate filter 12 and an exhaust pipe 10 disposed downstream thereof through which a hot exhaust stream 13 flows during operation of the exhaust system.
  • the diesel particulate filter 12 and the exhaust pipe 10 are arranged side by side in such a way that their flow axes Sl, S2 run parallel.
  • a device for guiding the exhaust gas flow in the form of a deflection shell 14 which defines a first bend 18 and a second bend 19.
  • the two bends 18, 19 each cause a deflection of the exhaust gas stream 13 by 90 ° and act in the same direction.
  • the deflection shell 14 forms a longitudinal section C-shaped channel arrangement.
  • An inlet opening 16 of the deflecting shell 14 is adapted to an outlet opening 31 of the diesel particulate filter 12.
  • an outlet opening 15 of the deflecting shell 14 is adapted to an inlet opening 30 of the exhaust pipe 10.
  • the inlet opening 16 and the outlet opening 15 of the deflecting shell 14 are circular in cross-section.
  • the deflecting shell 14 is composed of a first shell part 35 and a second shell part 37, wherein the connection of the deflecting shell 14 to the diesel particulate filter 12 and the exhaust pipe 10 takes place exclusively via the first shell part 35.
  • the first shell part 35 according to FIG. 2 has a plate-shaped base section 21, in which the inlet opening 16 and the outlet opening 15 are arranged next to one another. Starting from the edge of the inlet opening 16 and the outlet opening 15 in each case extends a connection structure 20 in the form of a parallel to the flow direction of the exhaust gas flow 13 extending passage 22, which has an end-side tilt 24.
  • the second shell part 37 is hollow and encloses both the inlet opening 16 and the outlet opening 15.
  • the hood-shaped second shell part 37 forms a cover of the deflecting shell 14. It is understood that the both shell parts 35, 37 are connected to each other gas-tight.
  • the gas-tight connection of the deflecting shell 14 with the diesel particulate filter 12 and the exhaust pipe 10 takes place by means of two V band clamps 26, wherein the tilt ribs 24 of the passages 22 form a flange for the V band clamps 26.
  • Corresponding mating flanges 25 are provided on the diesel particulate filter 12 and on the exhaust pipe 10.
  • the exhaust gas stream 13 in the illustrated part of the exhaust line is still deflected by two further Umlenkschalen 14 by 180 ° and in this case from the exhaust pipe 10 to a catalyst 39 and further from the catalyst 39 to another, in FIG. 1 not visible exhaust pipe out.
  • connection structures 20 are formed directly on one of the shell parts-namely on the first shell part 35-no subsequent welding of flanges is necessary and problems caused by welding distortion are avoided.

Abstract

A device for guiding a gas stream defines an inlet opening, an outlet opening and at least one angular offset which diverts the gas stream. The shell is assembled from a first shell part and a second shell part, wherein the first shell part defines the inlet opening and the outlet opening and has at least one connecting structure for the gas-tight connection of the device to a further gas-guiding component, and wherein the second shell part is configured to enclose the inlet opening and the outlet opening of the first shell part.

Description

Vorrichtung zum Führen eines Gasstroms  Device for guiding a gas flow
Die vorliegende Erfindung betrifft eine Vorrichtung zum Führen eines Gasstroms, insbesondere eines Abgasstroms eines Verbrennungsmotors, mit einer Schale, welche eine Eintrittsöffnung, eine Austrittsöffnung und mindestens eine den Gasstrom umlenkende Abwinklung definiert. In modernen Kraftfahrzeugen ist es aufgrund von Bauraumbeschränkungen häufig erforderlich, den Abgasstrang abgewinkelt auszuführen, wofür Umlenkschalen der vorstehend genannten Art eingesetzt werden. Solche Umlenkschalen können insbesondere zwischen zwei Abgasanlagenelemente, zum Beispiel zwischen einen Partikelfilter und ein Abgasrohr oder zwi- sehen ein Abgasrohr und einen Katalysator, eingesetzt sein. The present invention relates to a device for guiding a gas flow, in particular an exhaust gas flow of an internal combustion engine, with a shell, which defines an inlet opening, an outlet opening and at least one deflection which deflects the gas flow. In modern motor vehicles, it is often necessary due to space limitations to perform the exhaust line angled, for which deflecting shells of the aforementioned type are used. Such Umlenkschalen can be used in particular between two exhaust system elements, for example between a particulate filter and an exhaust pipe or see between an exhaust pipe and a catalyst.
Üblicherweise werden gattungsgemäße Gasführungskomponenten mit der vorausgehenden sowie mit der nachfolgenden Komponente des Abgasstrangs verschweißt. Alternativ zu einer Schweißverbindung kann auch eine Flanschverbindung vorgesehen sein. In diesem Fall sind die zu der Umlenkvorrichtung gehörenden Flansche an die Schale angeschweißt. Hierbei kann es allerdings zu einem unerwünschten Schweißverzug kommen. Außerdem steigen aufgrund der erhöhten Anzahl von Bauteilen sowie der zusätzlichen Bearbeitungsschritte die Herstellungskosten für die Abgasanlage. Es ist daher eine Aufgabe der Erfindung, eine Vorrichtung zum abgewinkelten Führen eines Gasstroms bereitzustellen, welche leicht und kostengünstig sowie unter Vermeidung eines Schweißverzugs herstellbar ist. Die Lösung der Aufgabe erfolgt durch eine Vorrichtung mit den Merkmalen des Anspruchs 1. Typically, generic gas guide components are welded to the preceding as well as the subsequent component of the exhaust line. Alternatively to a welded connection, a flange connection can also be provided. In this case, the flanges belonging to the deflection device are welded to the shell. However, this can lead to undesirable welding distortion. In addition, due to the increased number of components and the additional processing steps increase the cost of manufacturing the exhaust system. It is therefore an object of the invention to provide a device for angled guiding a gas stream, which is easy and inexpensive to produce and avoiding welding distortion. The object is achieved by a device having the features of claim 1.
Erfindungsgemäß ist die Schale aus einem ersten Schalenteil und einem zweiten Schalenteil zusammengesetzt, wobei das erste Schalenteil die Eintrittsöffnung und die Austrittsöffnung definiert und zumindest eine Anschlussstruktur zum gasdichten Verbinden der Vorrichtung mit einer weiteren Gasführungskomponente aufweist, und wobei das zweite Schalenteil zum Umschließen der Eintrittsöffnung und der Austrittsöffnung des ersten Schalenteils ausgebildet ist. According to the invention, the shell is composed of a first shell part and a second shell part, wherein the first shell part defines the inlet opening and the outlet opening and at least one connection structure for gas-tight connection of the device with another gas guide component, and wherein the second shell part for enclosing the inlet opening and the Outlet opening of the first shell part is formed.
Die den Gasstrom führende Schale wird also nicht einteilig ausgeführt, sondern mindestens zweiteilig, beispielsweise in Form zweier Halbschalen, wobei ein Schalenteil zum gasdichten Anschluss an die vorausgehende und/ oder die nachfolgende Gasführungskomponente ausgebildet ist und das zweite Schalenteil gewissermaßen einen Deckel bildet. Dadurch ergibt sich eine besonders einfache und kompakte Bauweise. Vorzugsweise ist sowohl an der Eintrittsöffnung als auch an der Austrittsöffnung jeweils eine Anschlussstruktur vorgesehen. Das erste Schalenteil kann auch selbst zweiteilig ausgeführt sein, sodass beispielsweise die Eintrittsöffnung und die Austrittsöffnung in verschiedenen Bauteilen ausgebildet sind. Da die Anschlussstrukturen, bei welchen es sich insbesondere um Flansche handeln kann, bereits an dem ersten Schalenteil vorgesehen sind, kann auf ein nachträgliches Anschweißen von Flanschen verzichtet werden. Dies hat insbesondere den Vorteil, dass kein Schweißverzug auftritt. Weiterbildungen der Erfindung sind in den abhängigen Ansprüchen, der Beschreibung sowie den beigefügten Zeichnungen angegeben. The shell carrying the gas stream is thus not carried out in one piece, but at least in two parts, for example in the form of two half shells, wherein a shell part is formed for gas-tight connection to the preceding and / or the subsequent gas guide component and the second shell part forms a kind of cover. This results in a particularly simple and compact design. Preferably, a connection structure is provided both at the inlet opening and at the outlet opening. The first shell part can also be made in two parts, so that, for example, the inlet opening and the outlet opening are formed in different components. Since the connection structures, which may in particular be flanges, are already provided on the first shell part, a subsequent welding of flanges can be dispensed with. This has the particular advantage that no welding distortion occurs. Further developments of the invention are specified in the dependent claims, the description and the accompanying drawings.
Die Anschlussstruktur kann insbesondere einstückig mit dem ersten Schalenteil ausgebildet, insbesondere an dieses angeformt, sein. Dadurch kann die Anzahl an erforderlichen Bauteilen sowie die Anzahl an Schweißnähten verringert werden. Ein direktes Anformen eines Flansches an eine kanalartige bzw. rohrförmige Schale kann schwierig sein. Aufgrund der zweiteiligen Ausgestaltung der Schale kann das erste Schalenteil jedoch eine relativ flache Gestalt aufweisen, wodurch das Anformen der Anschlussstruktur erleichtert wird. The connection structure may in particular be formed integrally with the first shell part, in particular formed on this. As a result, the number of required components and the number of welds can be reduced. Direct molding of a flange to a tubular shell can be difficult. However, due to the two-part design of the shell, the first shell part may have a relatively flat shape, whereby the molding of the connection structure is facilitated.
Bevorzugt umfasst die Anschlussstruktur einen Flansch, insbesondere einen Klemmflansch. Dies ermöglicht eine einfache und bei Bedarf lösbare gasdichte Anbindung an die weiteren Komponenten der Abgasanlage. Insbesondere kann durch eine Flanschverbindung die Anzahl an erforderlichen Schweißnähten gering gehalten werden. Preferably, the connection structure comprises a flange, in particular a clamping flange. This allows a simple and detachable if necessary gas-tight connection to the other components of the exhaust system. In particular, can be kept low by a flange connection, the number of required welds.
Die Anschlussstruktur kann einen sich parallel zur Strömungsrichtung des Gasstroms erstreckenden Rohrstutzen umfassen. Dies erleichtert die Montage der Umlenkvorrichtung. Beispielsweise könnte der Rohrstutzen auf einen Gegen-Rohrstutzen aufgesteckt oder in diesen eingesteckt werden, welcher seinerseits an der vorausgehenden oder nachfolgenden Gasführungskomponente vorgesehen ist, also z.B. von einem Katalysator oder einem Partikelfilter abragt. The connection structure may comprise a pipe socket extending parallel to the flow direction of the gas flow. This facilitates the assembly of the deflection device. For example, the pipe socket could be plugged or plugged into a counter-pipe socket, which in turn is provided on the preceding or succeeding gas-conducting component, e.g. protrudes from a catalyst or a particulate filter.
Gemäß einer Ausführungsform der Erfindung erweitert sich der Rohrstutzen in einer bezüglich der Schale nach außen weisenden Richtung gesehen. Eine solche Erweiterung des Rohrstutzens bildet von sich aus einen Flansch, der in besonderer Weise an ein Gegenstück einer weiterführenden Abgasanlagenkomponente angepasst sein kann. According to one embodiment of the invention, the pipe socket widens in a respect to the shell facing outward direction. Such an extension of the pipe socket forms by itself Flange, which can be adapted in a special way to a counterpart of a continuing exhaust system component.
Gemäß einer weiteren Ausführungsform der Erfindung ist der Rohrstutzen als Durchzug in einem Tiefziehprozess gebildet und weist insbesondere als Erweiterung eine endseitige Ankippung auf. Die Ankippung kann in vorteilhafter Weise einen Flansch für eine V-Bandschelle bilden. According to a further embodiment of the invention, the pipe socket is formed as a passage in a deep-drawing process and has in particular as an extension on an end tilting. The tilting can advantageously form a flange for a V band clamp.
Gemäß einer weiteren Ausführungsform der Erfindung ist das erste Scha- lenteil plattenförmig, während das zweite Schalenteil haubenförmig ist. Dies ermöglicht eine besonders einfache Herstellung, da das Einbringen der Öffnungen sowie das Vorsehen der Anschlussstrukturen in günstiger Weise an dem plattenförmigen Rohbauteil erfolgen kann. Gemäß einer Ausgestaltung der Erfindung definiert die Schale zwei aufeinanderfolgende Abwinklungen, welche vorzugsweise den Gasstrom jeweils um 90° umlenken. Somit können auch stärkere Umlenkungen durch ein und dieselbe Gasführungsvorrichtung bewerkstelligt werden. Vorzugsweise wirken die beiden Abwinklungen gleichsinnig, d.h. die Gas- führungsvorrichtung bildet eine im Längsschnitt C-förmige Kanalanordnung. Eine derartige Ausgestaltung ist insbesondere dann vorteilhaft, wenn ein Partikelfilter und ein mit diesem zu verbindendes Abgasrohr direkt nebeneinander angeordnet sind. Sollte es die Anwendung erfordern, können die beiden Abwinklungen auch gegensinnig umlenkend wirken, sodass die Gasführungsvorrichtung eine im Längsschnitt S-förmige Kanalanordnung bildet. Die Erfindung betrifft auch eine Abgasanlage, insbesondere für eine Brennkraftmaschine, die eine Vorrichtung wie vorstehend beschrieben aufweist. Die Erfindung wird nachfolgend beispielhaft unter Bezugnahme auf die Zeichnungen beschrieben. ist eine perspektivische Darstellung eines Teils eines Abgasstrangs eines Kraftfahrzeugs, in welchen eine erfindungsgemäße Vorrichtung zum Führen eines According to a further embodiment of the invention, the first shell part is plate-shaped, while the second shell part is hood-shaped. This allows a particularly simple production, since the introduction of the openings and the provision of the connection structures can be done in a favorable manner to the plate-shaped shell component. According to one embodiment of the invention, the shell defines two consecutive bends, which preferably deflect the gas flow by 90 ° in each case. Thus, stronger deflections can be accomplished by one and the same gas guide device. The two bends preferably act in the same direction, ie the gas guiding device forms a channel arrangement C-shaped in longitudinal section. Such a configuration is particularly advantageous if a particulate filter and an exhaust pipe to be connected to this are arranged directly adjacent to each other. Should it require the application, the two bends can also deflect in the opposite direction, so that the gas-guiding device forms a channel arrangement which is S-shaped in longitudinal section. The invention also relates to an exhaust system, in particular for an internal combustion engine, having a device as described above. The invention will now be described by way of example with reference to the drawings. is a perspective view of a portion of an exhaust line of a motor vehicle, in which a device according to the invention for guiding a
Gasstroms integriert ist. ist eine seitliche Längsschnittdarstellung der in Fig. 1 gezeigten Vorrichtung zum Führen eines Gasstroms. ist eine perspektivische Darstellung eines ersten Schalenteils einer Schale der in Fig. 1 gezeigten Vorrichtung zum Führen eines Gasstroms. Gemäß Fig. 1 und 2 umfasst eine Abgasanlage einer Brennkraftmaschine einen Dieselpartikelfilter 12 und ein stromabwärts desselben angeordnetes Abgasrohr 10, durch welche während des Betriebs der Abgasanlage ein heißer Abgasstrom 13 strömt. Der Dieselpartikelfilter 12 und das Abgasrohr 10 sind hierbei derart nebeneinander angeordnet, dass ihre Strö- mungsachsen Sl , S2 parallel verlaufen. Um den Dieselpartikelfilter 12 mit dem Abgasrohr 10 zu verbinden, ist eine Vorrichtung zum Führen des Abgasstroms in Form einer Umlenkschale 14 vorgesehen, welche eine erste Abwinklung 18 und eine zweite Abwinklung 19 definiert. Die beiden Abwinklungen 18, 19 bewirken jeweils eine Umlenkung des Abgasstroms 13 um 90° und wirken gleichsinnig. Dadurch bildet die Umlenkschale 14 eine im Längsschnitt C-förmige Kanalanordnung. Eine Eintrittsöffnung 16 der Umlenkschale 14 ist dabei an eine Austrittsöffnung 31 des Dieselpartikelfilters 12 angepasst. Ebenso ist eine Austrittsöffnung 15 der Umlenkschale 14 an eine Eintrittsöffnung 30 des Abgasrohrs 10 angepasst. Die Eintrittsöffnung 16 und die Austrittsöffnung 15 der Umlenkschale 14 sind im Querschnitt kreisförmig ausgebildet. Gas stream is integrated. FIG. 4 is a side elevational view in longitudinal section of the apparatus for guiding a gas flow shown in FIG. FIG. 12 is a perspective view of a first shell part of a shell of the apparatus for guiding a gas flow shown in FIG. Referring to FIGS. 1 and 2, an exhaust system of an internal combustion engine includes a diesel particulate filter 12 and an exhaust pipe 10 disposed downstream thereof through which a hot exhaust stream 13 flows during operation of the exhaust system. The diesel particulate filter 12 and the exhaust pipe 10 are arranged side by side in such a way that their flow axes Sl, S2 run parallel. In order to connect the diesel particulate filter 12 to the exhaust pipe 10, a device for guiding the exhaust gas flow in the form of a deflection shell 14 is provided which defines a first bend 18 and a second bend 19. The two bends 18, 19 each cause a deflection of the exhaust gas stream 13 by 90 ° and act in the same direction. As a result, the deflection shell 14 forms a longitudinal section C-shaped channel arrangement. An inlet opening 16 of the deflecting shell 14 is adapted to an outlet opening 31 of the diesel particulate filter 12. Likewise, an outlet opening 15 of the deflecting shell 14 is adapted to an inlet opening 30 of the exhaust pipe 10. The inlet opening 16 and the outlet opening 15 of the deflecting shell 14 are circular in cross-section.
Die Umlenkschale 14 ist aus einem ersten Schalenteil 35 und einem zweiten Schalenteil 37 zusammengesetzt, wobei die Anbindung der Umlenk- schale 14 an den Dieselpartikelfilter 12 sowie das Abgasrohr 10 ausschließlich über das erste Schalenteil 35 erfolgt. Konkret weist das erste Schalenteil 35 gemäß Fig. 2 einen plattenförmigen Basisabschnitt 21 auf, in welchem die Eintrittsöffnung 16 und die Austrittsöffnung 15 nebeneinander angeordnet sind. Ausgehend vom Rand der Eintrittsöffnung 16 sowie der Austrittsöffnung 15 erstreckt sich jeweils eine Anschlussstruktur 20 in Form eines parallel zur Strömungsrichtung des Abgasstroms 13 verlaufenden Durchzugs 22, welcher eine endseitige Ankippung 24 aufweist. Wie aus Fig. 1 und 2 hervorgeht, ist das zweite Schalenteil 37 hau- benförmig und umschließt sowohl die Eintrittsöffnung 16 als auch die Austrittsöffnung 15. Mit anderen Worten bildet das haubenförmige zweite Schalenteil 37 eine Abdeckung der Umlenkschale 14. Es versteht sich, dass die beiden Schalenteile 35, 37 gasdicht miteinander verbunden sind. The deflecting shell 14 is composed of a first shell part 35 and a second shell part 37, wherein the connection of the deflecting shell 14 to the diesel particulate filter 12 and the exhaust pipe 10 takes place exclusively via the first shell part 35. In concrete terms, the first shell part 35 according to FIG. 2 has a plate-shaped base section 21, in which the inlet opening 16 and the outlet opening 15 are arranged next to one another. Starting from the edge of the inlet opening 16 and the outlet opening 15 in each case extends a connection structure 20 in the form of a parallel to the flow direction of the exhaust gas flow 13 extending passage 22, which has an end-side tilt 24. As can be seen from FIGS. 1 and 2, the second shell part 37 is hollow and encloses both the inlet opening 16 and the outlet opening 15. In other words, the hood-shaped second shell part 37 forms a cover of the deflecting shell 14. It is understood that the both shell parts 35, 37 are connected to each other gas-tight.
Die gasdichte Verbindung der Umlenkschale 14 mit dem Dieselpartikelfil- ter 12 und dem Abgasrohr 10 erfolgt mittels zweier V-Bandschellen 26, wobei die Ankippungen 24 der Durchzüge 22 einen Flansch für die V- Bandschellen 26 bilden. Entsprechende Gegenflansche 25 sind am Dieselpartikelfilter 12 und am Abgasrohr 10 vorgesehen. Wie aus Fig. 1 hervorgeht, wird der Abgasstrom 13 in dem dargestellten Teil des Abgasstrangs noch durch zwei weitere Umlenkschalen 14 um jeweils 180° umgelenkt und hierbei von dem Abgasrohr 10 zu einem Katalysator 39 und weiter von dem Katalysator 39 einem weiteren, in Fig. 1 nicht sichtbaren Abgasrohr geführt. The gas-tight connection of the deflecting shell 14 with the diesel particulate filter 12 and the exhaust pipe 10 takes place by means of two V band clamps 26, wherein the tilt ribs 24 of the passages 22 form a flange for the V band clamps 26. Corresponding mating flanges 25 are provided on the diesel particulate filter 12 and on the exhaust pipe 10. As is apparent from Fig. 1, the exhaust gas stream 13 in the illustrated part of the exhaust line is still deflected by two further Umlenkschalen 14 by 180 ° and in this case from the exhaust pipe 10 to a catalyst 39 and further from the catalyst 39 to another, in FIG. 1 not visible exhaust pipe out.
Aufgrund der zweiteiligen Ausführung der Umlenkschale 14 sowie der in die Umlenkschale 14 integrierten Durchzüge 22 ist eine besonders kompakte Bauweise möglich, wobei insgesamt nur wenige Bauteile zur Her- Stellung der Umlenkschale 14 erforderlich sind. Zudem kann die Anzahl von Schweißnähten, die bei der Montage des Abgasstrangs erforderlich sind, reduziert werden. Dadurch dass die Anschlussstrukturen 20 direkt an eines der Schalenteile - nämlich an das erste Schalenteil 35 - angeformt sind, muss kein nachträgliches Anschweißen von Flanschen erfol- gen und Probleme durch Schweiß verzug werden vermieden. Due to the two-part design of the deflecting shell 14 and the integrated into the deflector 14 passages 22 a particularly compact design is possible, with a total of only a few components for the manufacture of the deflector 14 are required. In addition, the number of welds required in the assembly of the exhaust line can be reduced. Because the connection structures 20 are formed directly on one of the shell parts-namely on the first shell part 35-no subsequent welding of flanges is necessary and problems caused by welding distortion are avoided.
Bezugszeichenliste LIST OF REFERENCE NUMBERS
10 Abgasrohr 10 exhaust pipe
12 Dieselpartikelfilter  12 diesel particulate filter
13 Abgasstrom  13 exhaust gas flow
14 Umlenkschale  14 deflection shell
15 Austrittsöffnung der Umlenkschale 15 outlet opening of the deflection shell
16 Eintrittsöffnung der Umlenkschale16 inlet opening of the deflection shell
18 erste Abwinklung 18 first bend
19 zweite Abwinklung  19 second bend
20 Anschlussstruktur  20 connection structure
21 plattenförmiger Basisabschnitt  21 plate-shaped base section
22 Durchzug  22 passage
24 Ankippung  24 tilting
25 Gegenflansch  25 counterflange
26 V-Bandschelle  26 V band clamp
30 Eintrittsöffnung des Abgasrohrs  30 inlet opening of the exhaust pipe
31 Austrittsöffnung des Dieselpartikelfilters 31 outlet opening of the diesel particulate filter
35 erstes Schalenteil 35 first shell part
37 zweites Schalenteil  37 second shell part
39 Katalysator  39 catalyst
Sl Strömungsachse des Abgasrohrs Sl flow axis of the exhaust pipe
S2 Strömungsachse des Dieselpartikelfilters S2 flow axis of the diesel particulate filter

Claims

Patentansprüche  claims
Vorrichtung zum Führen eines Gasstroms, insbesondere eines Abgasstroms eines Verbrennungsmotors, mit einer Schale (14), welche eine Eintrittsöffnung (16), eine Austrittsöffnung (15) und mindestens eine den Gasstrom umlenkende Abwinklung (18, 19) definiert, dadurch g e k e n n z e i c h n e t , dass Device for guiding a gas flow, in particular an exhaust gas flow of an internal combustion engine, with a shell (14) which defines an inlet opening (16), an outlet opening (15) and at least one bend (18, 19) deflecting the gas flow, characterized in that
die Schale (14) aus einem ersten Schalenteil (35) und einem zweiten Schalenteil (37) zusammengesetzt ist, wobei das erste Schalenteil (35) die Eintrittsöffnung (16) und die Austrittsöffnung (15) definiert und zumindest eine Anschlussstruktur (20) zum gasdichten Verbinden der Vorrichtung mit einer weiteren Gasführungskomponente (10, 12) aufweist, und wobei das zweite Schalenteil (37) zum Umschließen der Eintrittsöffnung (16) und der Austrittsöffnung (15) des ersten Schalenteils (35) ausgebildet ist. 2. Vorrichtung nach Anspruch 1 ,  the shell (14) is composed of a first shell part (35) and a second shell part (37), wherein the first shell part (35) defines the inlet opening (16) and the outlet opening (15) and at least one connection structure (20) for gas-tight Connecting the device with another gas guide component (10, 12), and wherein the second shell part (37) for enclosing the inlet opening (16) and the outlet opening (15) of the first shell part (35) is formed. 2. Apparatus according to claim 1,
dadurch g e k e n n z e i c h n e t , dass  By doing so, that is
die Anschlussstruktur (20) einstückig mit dem ersten Schalenteil the connection structure (20) integral with the first shell part
(35) ausgebildet, insbesondere an dieses angeformt, ist. 3. Vorrichtung nach Anspruch 1 oder 2, (35) formed, in particular formed on this, is. 3. Apparatus according to claim 1 or 2,
dadurch g e k e n n z e i c h n e t , dass  By doing so, that is
die Anschlussstruktur (20) einen Flansch, insbesondere einen the connection structure (20) has a flange, in particular a
Klemmflansch, umfasst. Vorrichtung nach zumindest einem der vorstehenden Ansprüche, dadurch g e k e n n z e i c h n e t , dass Clamping flange, includes. Device according to at least one of the preceding claims, characterized in that
die Anschlussstruktur (20) einen sich parallel zur Strömungsrichtung des Gasstroms erstreckenden Rohrstutzen (22) umfasst. the connection structure (20) comprises a pipe stub (22) extending parallel to the flow direction of the gas flow.
Vorrichtung nach Anspruch 4, Device according to claim 4,
dadurch g e k e n n z e i c h n e t , dass By doing so, that is
sich der Rohrstutzen (22) in einer bezüglich der Schale (14) nach außen weisenden Richtung gesehen erweitert. Expanded the pipe socket (22) in a respect to the shell (14) facing outward direction.
Vorrichtung nach Anspruch 4 oder 5, Device according to claim 4 or 5,
dadurch g e k e n n z e i c h n e t , dass By doing so, that is
der Rohrstutzen (22) als Durchzug in einem Tiefziehprozess gebildet ist und insbesondere als Erweiterung eine endseitige Ankippung (24) aufweist. the pipe socket (22) is formed as a passage in a deep-drawing process and in particular as an extension has an end-side tilting (24).
Vorrichtung nach zumindest einem der vorstehenden Ansprüche, dadurch g e k e n n z e i c h n e t , dass Device according to at least one of the preceding claims, characterized in that e
das erste Schalenteil (35) plattenförmig ist und das zweite Schalenteil (37) haubenförmig ist. the first shell part (35) is plate-shaped and the second shell part (37) is hood-shaped.
Vorrichtung nach zumindest einem der vorstehenden Ansprüche, dadurch g e k e n n z e i c h n e t , dass Device according to at least one of the preceding claims, characterized in that e
die Schale (14) zwei aufeinanderfolgende Abwinklungen (18, 19) definiert, welche vorzugsweise den Gasstrom jeweils um 90° umlenken. the shell (14) defines two successive bends (18, 19), which preferably deflect the gas flow by 90 ° in each case.
9. Vorrichtung nach Anspruch 8, 9. Apparatus according to claim 8,
dadurch g e k e n n z e i c h n e t , dass  By doing so, that is
die beiden Abwinklungen (18, 19) gleichsinnig umlenkend wirken. 10. Abgasanlage, insbesondere für eine Brennkraftmaschine, mit einer Vorrichtung nach einem der vorstehenden Ansprüche.  the two bends (18, 19) act in the same direction deflecting. 10. exhaust system, in particular for an internal combustion engine, with a device according to one of the preceding claims.
PCT/EP2013/065181 2012-08-10 2013-07-18 Device for guiding a gas stream WO2014023548A1 (en)

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US14/373,309 US20150135692A1 (en) 2012-08-10 2013-07-18 Device for guiding a gas stream
BR112014011827A BR112014011827A2 (en) 2012-08-10 2013-07-18 apparatus for conducting a gas flow, in particular an exhaust gas flow from an internal combustion engine comprising a housing defining an inlet opening, an outlet opening and at least one bend diverting the gas stream , and gas exhaust system, in particular for an internal combustion engine
CN201380004351.3A CN104066948A (en) 2012-08-10 2013-07-18 Device for guiding a gas stream

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CN104066948A (en) 2014-09-24
US20150135692A1 (en) 2015-05-21

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