DE102006015964A1 - Assembly for mixing a medium with the exhaust gas flow of a motor vehicle exhaust system - Google Patents

Assembly for mixing a medium with the exhaust gas flow of a motor vehicle exhaust system Download PDF

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Publication number
DE102006015964A1
DE102006015964A1 DE102006015964A DE102006015964A DE102006015964A1 DE 102006015964 A1 DE102006015964 A1 DE 102006015964A1 DE 102006015964 A DE102006015964 A DE 102006015964A DE 102006015964 A DE102006015964 A DE 102006015964A DE 102006015964 A1 DE102006015964 A1 DE 102006015964A1
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Germany
Prior art keywords
connecting element
exhaust pipe
exhaust
medium
gas flow
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE102006015964A
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German (de)
Inventor
Rolf Kaiser
Klaus Rusch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Faurecia Emissions Control Technologies Germany GmbH
Original Assignee
ArvinMeritor Emissions Technologies GmbH
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.)
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Publication date
Application filed by ArvinMeritor Emissions Technologies GmbH filed Critical ArvinMeritor Emissions Technologies GmbH
Priority to DE102006015964A priority Critical patent/DE102006015964A1/en
Priority to PCT/EP2007/003004 priority patent/WO2007115748A1/en
Priority to US12/295,949 priority patent/US20090049829A1/en
Publication of DE102006015964A1 publication Critical patent/DE102006015964A1/en
Withdrawn legal-status Critical Current

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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
    • F01N3/18—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 methods of operation; Control
    • F01N3/20—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 methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2066—Selective catalytic reduction [SCR]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/314—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit
    • B01F25/3141—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit with additional mixing means other than injector mixers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/431—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor
    • B01F25/4316—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor the baffles being flat pieces of material, e.g. intermeshing, fixed to the wall or fixed on a central rod
    • 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
    • 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
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/24—Concentric tubes or tubes being concentric to housing, e.g. telescopically assembled
    • 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
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Dispersion Chemistry (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

Eine Baugruppe zur Vermischung eines Mediums mit dem Abgasstrom einer Kfz-Abgasanlage hat ein erstes Abgasrohr (12), das eine Vorrichtung (18) zur Einbringung des Mediums aufweist und axial in ein gegenüber dem Abgasrohr (12) verbreitertes Verbindungselement (16) mündet, und ein zweites Abgasrohr (14), das seitlich in das Verbindungselement (16) mündet. Das Verbindungselement (16) ist derart ausgebildet, daß es dem Abgasstrom eine Drehimpuls erteilen kann.An assembly for mixing a medium with the exhaust gas flow of a motor vehicle exhaust system has a first exhaust pipe (12), which has a device (18) for introducing the medium and opens axially into a connecting element (16) widened relative to the exhaust pipe (12), and a second exhaust pipe (14) which opens laterally into the connecting element (16). The connecting element (16) is designed such that it can give the exhaust gas flow an angular momentum.

Description

Die Erfindung betrifft eine Baugruppe zur Vermischung eines Mediums mit dem Abgasstrom einer Kfz-Abgasanlage.The The invention relates to an assembly for mixing a medium with the exhaust gas flow of a vehicle exhaust system.

Bei modernen Abgassystemen ist es manchmal erforderlich, in den Abgasstrom ein Medium einzubringen, um bestimmte Reaktionen hervorzurufen. Beispielsweise kann stromaufwärts eines SCR-Katalysators Harnstoff in gelöster Form eingespritzt werden, um Ammoniak als Reduktionsmittel für die im Abgas vorhandenen Stickoxide bereitzustellen. Auch kann stromaufwärts eines Partikelfilters Reduktionsmittel wie z.B. Kraftstoff zugeführt werden, um die im Filter zurückgehaltenen Partikel kontrolliert abzubrennen. Allgemein gilt dabei, daß das einzubringende Medium möglichst homogen im Abgasstrom verteilt werden soll, damit eine gleichmäßige Wirkung eintritt.at Modern exhaust systems sometimes require it in the exhaust stream to introduce a medium to elicit certain reactions. For example can be upstream an SCR catalyst urea are injected in dissolved form, to ammonia as a reducing agent for the existing in the exhaust gas To provide nitrogen oxides. Also, reducing agent may be upstream of a particulate filter such as. Fuel supplied to those retained in the filter Particles controlled burn off. In general, the fact that the introduced Medium as possible should be distributed homogeneously in the exhaust stream, so that a uniform effect occurs.

Dies gilt insbesondere auch für zweiflutige Abgasanlagen (z.B. bei einem 6- oder 8-Zylinder Motor), bei denen aus Kostengründen oftmals nur eine einzige Harnstoffeinspritzvorrichtung (für SCR-Anwendungen) vorgesehen ist. Diese wird dann üblicherweise stromabwärts eines Verbindungselements angeordnet, welches die Abgasströme aus den beiden Abgasrohren zusammenführt. Auch hier stellt sich das Problem, eine intensive Vermischung des Abgases mit dem eingebrachten Medium zu erreichen.This especially applies to twin-flow exhaust systems (for example, in a 6- or 8-cylinder engine), in which cost reasons often only a single urea injection device (for SCR applications) is provided. This is then usually downstream arranged a connecting element, which the exhaust gas streams from the merges two exhaust pipes. Again, the problem arises, an intensive mixing of the exhaust gas to reach with the introduced medium.

Die Aufgabe der Erfindung besteht somit darin, mit geringem Aufwand und hoher Zuverlässigkeit eine gleichmäßige Verteilung eines eingebrachten Mediums im Abgasstrom zu erreichen, insbesondere im Abgasstrom einer zweiflutigen Abgasanlage.The The object of the invention is thus, with little effort and high reliability one even distribution to achieve an introduced medium in the exhaust stream, in particular in Exhaust gas flow of a twin-flow exhaust system.

Erfindungsgemäß ist hierzu eine Baugruppe der eingangs genannten Art vorgesehen, mit einem ersten Abgasrohr, das eine Vorrichtung zur Einbringung des Mediums aufweist und axial in ein gegenüber dem Abgasrohr verbreitertes Verbindungselement mündet, und einem zweiten Abgasrohr, das seitlich in das Verbindungselement mündet, wobei das Verbindungselement derart ausgebildet ist, daß es dem Abgasstrom einen Drehimpuls erteilen kann. Das Medium wird also zunächst dem Abgasstrom im ersten Abgasrohr zugeführt und gelangt mit diesem in das Verbindungselement, in dem es zu einer Vermischung mit dem Abgasstrom aus dem zweiten Abgasrohr kommt. Dabei wird dem gesamten Abgasstrom im Inneren des Verbindungselements ein Drall erteilt, der zu einer guten Verwirbelung und somit zu einer guten Verteilung des Mediums führt. Zudem wird eine Verunreinigung der Rohrwände durch das eingebrachte Medium, etwa durch ein Festsetzen des Mediums an den Rohrwänden, vermieden. Die erfindungsgemäße Ausgestaltung eignet sich insbesondere für eine zweiflutige Abgasanlage, wobei nur eine einzige Vorrichtung zur Einbringung des Mediums nötig ist, kann jedoch in jeder Abgasanlage eingesetzt werden, deren Abgasstrom zumindest abschnittsweise auf zwei Rohre aufgeteilt wird.According to the invention is this an assembly of the type mentioned provided with a first Exhaust pipe having a device for introducing the medium and axially in one opposite the exhaust pipe widened connecting member opens, and a second exhaust pipe, the side opens into the connecting element, wherein the connecting element is designed such that it the exhaust gas flow can impart an angular momentum. The medium will be so first fed to the exhaust stream in the first exhaust pipe and passes with this in the connecting element, in which there is a mixing with the exhaust gas flow comes from the second exhaust pipe. This is the entire exhaust stream inside the connecting element gives a twist, which leads to a good turbulence and thus to a good distribution of the medium leads. In addition, contamination of the pipe walls is introduced by the Medium, such as by a setting of the medium on the tube walls, avoided. The embodiment of the invention is particularly suitable for a twin-flow exhaust system, with only a single device necessary for the introduction of the medium is, but can be used in any exhaust system, the exhaust stream at least partially divided into two tubes.

Vorzugsweise erstreckt sich das erste Abgasrohr über den Mündungsbereich des zweiten Abgasrohrs hinaus in das Innere des Verbindungselements. Der Abgasstrom aus dem zweiten Abgasrohr trifft also zunächst auf die Wandung des ersten Abgasrohrs und wird dadurch zu einer kreisenden Bewegung um das Ende des ersten Abgasrohrs gezwungen.Preferably the first exhaust pipe extends over the mouth region of the second exhaust pipe out into the interior of the connecting element. The exhaust flow off The second exhaust pipe thus first meets the wall of the first Exhaust pipe and thereby becomes a circular motion around the Forced end of the first exhaust pipe.

Insbesondere hat das Verbindungselement die Form eines Konus, in dessen größere Stirnfläche das erste Abgasrohr mündet. Durch die schräg zulaufenden Seitenwände des Verbindungselements wird eine besonders gute Verwirbelung des Abgasstroms erreicht.Especially the connecting element has the shape of a cone, in the larger end face of the first exhaust pipe opens. By the oblique tapered side walls of the connecting element is a particularly good turbulence of Exhaust gas flow reached.

Vorteilhaft mündet das zweite Abgasrohr tangential in das Verbindungselement. Somit wird der Abgasstrom aus dem zweiten Abgasrohr in einfacher Weise auf eine Schraubenbahn längs der Innenwand des Verbindungselements gezwungen.Advantageous ends the second exhaust pipe tangentially into the connecting element. Consequently the exhaust gas flow from the second exhaust pipe in a simple manner along a helical path forced the inner wall of the connecting element.

Zur Unterstützung der Verwirbelung des Abgasstroms kann das Verbindungselement auf seiner Innenseite eine Führungsfläche für den Abgasstrom aufweisen.to support the turbulence of the exhaust stream, the connecting element its inside have a guide surface for the exhaust stream.

Um die Vermischung des eingebrachten Mediums mit dem Abgasstrom im ersten Abgasrohr zu erleichtern, kann die Vorrichtung stromabwärts eines Leitelements im ersten Abgasrohr angeordnet sein.Around the mixing of the introduced medium with the exhaust gas flow in first exhaust pipe, the device may be downstream of a guide element be arranged in the first exhaust pipe.

Gemäß einer besonders bevorzugten Ausführungsform ist das zweite Abgasrohr einstückig mit dem Verbindungselement ausgeführt.According to one particularly preferred embodiment is the second exhaust pipe in one piece executed with the connecting element.

Wie bereits eingangs erwähnt, kann die Vorrichtung eine Harnstoffeinspritzvorrichtung sein. Ebenso könnte es sich jedoch auch um eine Vorrichtung zur Einbringung von Reduktionsmittel wie z.B. Kraftstoff zur Regeneration etwa eines Partikelfilters handeln.As already mentioned at the beginning, For example, the device may be a urea injector. As well could However, it is also a device for introducing reducing agent such as. Fuel for the regeneration of about a particulate filter act.

Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung einer bevorzugten Ausführungsform anhand der beigefügten Zeichnungen. In diesen zeigen:Further Features and advantages of the invention will become apparent from the following Description of a preferred embodiment with reference to the accompanying drawings. In these show:

1 einen Längsschnitt durch eine erfindungsgemäße Baugruppe; und 1 a longitudinal section through an assembly according to the invention; and

2 einen Querschnitt durch die Baugruppe längs der Linie II-II. 2 a cross section through the assembly along the line II-II.

1 zeigt eine Baugruppe 10, die in einer Abgasanlage eines nicht gezeigten Kraftfahrzeugs angeordnet ist und ein erstes Abgasrohr 12 sowie ein zweites Abgasrohr 14 aufweist, die jeweils in Richtung der Pfeile P1 von Abgas durchströmt werden. Die Abgasströme aus beiden Abgasrohren 12, 14 werden in einem Verbindungselement 16 zusammengeführt, wobei das zweite Abgasrohr 14 seitlich, insbesondere tangential (siehe 2), in das Verbindungselement 16 mündet und im gezeigten Beispiel einstückig mit dem Verbindungselement 16 ausgeführt ist. 1 shows an assembly 10 , which is arranged in an exhaust system of a motor vehicle, not shown, and a first exhaust pipe 12 and a second exhaust pipe 14 which are flowed through in each case in the direction of arrows P 1 of the exhaust gas. The exhaust gas flows from both exhaust pipes 12 . 14 be in a connector 16 merged, wherein the second exhaust pipe 14 laterally, in particular tangentially (see 2 ), in the connecting element 16 opens and in the example shown in one piece with the connecting element 16 is executed.

Das erste Abgasrohr 12 mündet axial in das Verbindungselement 16 und weist eine Vorrichtung 18 zur Einbringung eines Mediums, hier eine Harnstoffeinspritzvorrichtung, auf, die stromabwärts eines Leitelements 20 angeordnet ist. Das Verbindungselement 16 hat die Form eines Konus und ist gegenüber dem ersten Abgasrohr 12 verbreitert, das sich über den Mündungsbereich des zweiten Abgasrohrs 14 hinaus in das Innere des Verbindungselements 16 erstreckt.The first exhaust pipe 12 opens axially into the connecting element 16 and has a device 18 for introducing a medium, here a urea injection device, on the downstream of a guide element 20 is arranged. The connecting element 16 has the shape of a cone and is opposite the first exhaust pipe 12 widened, extending over the mouth region of the second exhaust pipe 14 out into the interior of the connecting element 16 extends.

Durch die tangentiale Einbringung des Abgasstroms aus dem zweiten Abgasrohr 14 in das konusförmige Verbindungselement 16 wird eine auch als Vortex bezeichnete Verwirbelung des vereinigten Abgasstroms erreicht, die eine besonders gute Durchmischung mit dem eingebrachten Medium (hier gelöster Harnstoff) bewirkt. Die Verwirbelung ist in den Figuren durch den schraubenförmig verlaufenden Pfeil P2 angedeutet.Due to the tangential introduction of the exhaust gas flow from the second exhaust pipe 14 in the cone-shaped connecting element 16 is also known as Vortex turbulence of the combined exhaust gas flow achieved, which causes a particularly good mixing with the introduced medium (here dissolved urea). The turbulence is indicated in the figures by the helical arrow P 2 .

Abweichend von der dargestellten Ausführungsform kann das Verbindungselement 16 auf seiner Innenseite eine Führungsfläche für den Abgasstrom aufweisen, die z.B. durch ein Leitblech oder plastisch verformte Wandabschnitte des Verbindungselements gebildet ist.Notwithstanding the illustrated embodiment, the connecting element 16 have on its inside a guide surface for the exhaust stream, which is formed for example by a baffle or plastically deformed wall portions of the connecting element.

1010
Baugruppemodule
1212
erstes Abgasrohrfirst exhaust pipe
1414
zweites Abgasrohrsecond exhaust pipe
1616
Verbindungselementconnecting element
1818
Vorrichtungcontraption
2020
Leitelementvane
P1 P 1
Strömungsrichtung des Abgasesflow direction the exhaust gas
P2 P 2
Verwirbelungturbulence

Claims (8)

Baugruppe zur Vermischung eines Mediums mit dem Abgasstrom einer Kfz-Abgasanlage, mit einem ersten Abgasrohr (12), das eine Vorrichtung (18) zur Einbringung des Mediums aufweist und axial in ein gegenüber dem Abgasrohr (12) verbreitertes Verbindungselement (16) mündet, und einem zweiten Abgasrohr (14), das seitlich in das Verbindungselement (16) mündet, wobei das Verbindungselement (16) derart ausgebildet ist, daß es dem Abgasstrom einen Drehimpuls erteilen kann.Assembly for mixing a medium with the exhaust gas flow of a motor vehicle exhaust system, with a first exhaust pipe ( 12 ), which is a device ( 18 ) for introducing the medium and axially into a relative to the exhaust pipe ( 12 ) widened connecting element ( 16 ), and a second exhaust pipe ( 14 ), which laterally into the connecting element ( 16 ), wherein the connecting element ( 16 ) is designed such that it can impart an angular momentum to the exhaust gas flow. Baugruppe nach Anspruch 1, dadurch gekennzeichnet, daß sich das erste Abgasrohr (12) über den Mündungsbereich des zweiten Abgasrohrs (14) hinaus in das Innere des Verbindungselements (16) erstreckt.An assembly according to claim 1, characterized in that the first exhaust pipe ( 12 ) over the mouth region of the second exhaust pipe ( 14 ) out into the interior of the connecting element ( 16 ). Baugruppe nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Verbindungselement (16) die Form eines Konus hat.An assembly according to claim 1 or 2, characterized in that the connecting element ( 16 ) has the shape of a cone. Baugruppe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das zweite Abgasrohr (14) tangential in das Verbindungselement (16) mündet.Assembly according to one of the preceding claims, characterized in that the second exhaust pipe ( 14 ) tangentially into the connecting element ( 16 ) opens. Baugruppe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Verbindungselement (16) auf seiner Innenseite eine Führungsfläche für den Abgasstrom aufweist.Assembly according to one of the preceding claims, characterized in that the connecting element ( 16 ) has on its inside a guide surface for the exhaust gas flow. Baugruppe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Vorrichtung (18) stromabwärts eines Leitelements (20) im ersten Abgasrohr (12) angeordnet ist.Assembly according to one of the preceding claims, characterized in that the device ( 18 ) downstream of a guiding element ( 20 ) in the first exhaust pipe ( 12 ) is arranged. Baugruppe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das zweite Abgasrohr (14) einstückig mit dem Verbindungselement (16) ausgeführt ist.Assembly according to one of the preceding claims, characterized in that the second exhaust pipe ( 14 ) in one piece with the connecting element ( 16 ) is executed. Baugruppe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Vorrichtung (18) eine Harnstoffeinspritzvorrichtung ist.Assembly according to one of the preceding claims, characterized in that the device ( 18 ) is a urea injection device.
DE102006015964A 2006-04-05 2006-04-05 Assembly for mixing a medium with the exhaust gas flow of a motor vehicle exhaust system Withdrawn DE102006015964A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE102006015964A DE102006015964A1 (en) 2006-04-05 2006-04-05 Assembly for mixing a medium with the exhaust gas flow of a motor vehicle exhaust system
PCT/EP2007/003004 WO2007115748A1 (en) 2006-04-05 2007-04-03 Assembly for mixing a medium with the exhaust-gas flow of a motor-vehicle exhaust-gas system
US12/295,949 US20090049829A1 (en) 2006-04-05 2007-04-03 Assembly for Mixing a Medium with the Exhaust Gas Flow of a Motor Vehicle Exhaust System

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Application Number Priority Date Filing Date Title
DE102006015964A DE102006015964A1 (en) 2006-04-05 2006-04-05 Assembly for mixing a medium with the exhaust gas flow of a motor vehicle exhaust system

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DE (1) DE102006015964A1 (en)
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EP2161423A1 (en) 2006-09-26 2010-03-10 Faurecia Abgastechnik GmbH Exhaust gas facility for diesel vehicles with an SCR catalytic converter
WO2010032077A1 (en) * 2008-09-19 2010-03-25 Renault Trucks Mixing device in an exhaust gas pipe
EP2180156A1 (en) * 2008-10-24 2010-04-28 Magneti Marelli Powertrain S.p.A. Injection system for injecting a reducing substance into an exhaust system of an internal combustion engine
WO2012047159A1 (en) * 2010-10-06 2012-04-12 Scania Cv Ab (Publ) Arrangement for introducing a liquid medium into exhaust gases from a combustion engine

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DE202008001547U1 (en) 2007-07-24 2008-04-10 Emcon Technologies Germany (Augsburg) Gmbh Assembly for introducing a reducing agent into the exhaust pipe of an exhaust system of an internal combustion engine
JP5977375B2 (en) * 2013-01-25 2016-08-24 フタバ産業株式会社 Exhaust gas purification device
WO2016176076A1 (en) 2015-04-30 2016-11-03 Faurecia Emissions Control Technologies, Usa, Llc Full rotation mixer
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