DE102008053669A1 - Exhaust system for a vehicle - Google Patents
Exhaust system for a vehicle Download PDFInfo
- Publication number
- DE102008053669A1 DE102008053669A1 DE102008053669A DE102008053669A DE102008053669A1 DE 102008053669 A1 DE102008053669 A1 DE 102008053669A1 DE 102008053669 A DE102008053669 A DE 102008053669A DE 102008053669 A DE102008053669 A DE 102008053669A DE 102008053669 A1 DE102008053669 A1 DE 102008053669A1
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- Germany
- Prior art keywords
- exhaust system
- exhaust
- swirling element
- flow direction
- section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000012530 fluid Substances 0.000 claims abstract description 17
- 238000002347 injection Methods 0.000 claims abstract description 12
- 239000007924 injection Substances 0.000 claims abstract description 12
- 230000008929 regeneration Effects 0.000 claims description 8
- 238000011069 regeneration method Methods 0.000 claims description 8
- 239000003054 catalyst Substances 0.000 claims description 7
- 239000000446 fuel Substances 0.000 claims description 7
- 230000003647 oxidation Effects 0.000 claims description 7
- 238000007254 oxidation reaction Methods 0.000 claims description 7
- 238000011045 prefiltration Methods 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 37
- 239000007788 liquid Substances 0.000 description 8
- 239000002245 particle Substances 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000003716 rejuvenation Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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
- F01N3/18—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
- F01N3/206—Adding periodically or continuously substances to exhaust gases for promoting purification, e.g. catalytic material in liquid form, NOx reducing agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/21—Mixing gases with liquids by introducing liquids into gaseous media
- B01F23/213—Mixing gases with liquids by introducing liquids into gaseous media by spraying or atomising of the liquids
- B01F23/2132—Mixing gases with liquids by introducing liquids into gaseous media by spraying or atomising of the liquids using nozzles
-
- 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
- B01F25/313—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
- B01F25/3131—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit with additional mixing means other than injector mixers, e.g. screens, baffles or rotating elements
-
- 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
- B01F25/4315—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor the baffles being deformed flat pieces of material
-
- 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
- B01F25/4317—Profiled elements, e.g. profiled blades, bars, pillars, columns or chevrons
-
- 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
- B01F25/433—Mixing tubes wherein the shape of the tube influences the mixing, e.g. mixing tubes with varying cross-section or provided with inwardly extending profiles
-
- 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
- B01F25/433—Mixing tubes wherein the shape of the tube influences the mixing, e.g. mixing tubes with varying cross-section or provided with inwardly extending profiles
- B01F25/4335—Mixers with a converging-diverging cross-section
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/02—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 silencers 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
- F01N3/36—Arrangements for supply of additional fuel
-
- 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
- B01F25/43197—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor characterised by the mounting of the baffles or obstructions
- B01F25/431972—Mounted on an axial support member, e.g. a rod or bar
-
- 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
- B01F25/43197—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor characterised by the mounting of the baffles or obstructions
- B01F25/431974—Support members, e.g. tubular collars, with projecting baffles fitted inside the mixing tube or adjacent to the inner wall
-
- 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
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/03—Adding substances to exhaust gases the substance being hydrocarbons, e.g. engine fuel
-
- 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
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
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- 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
Abstract
Eine Abgasanlage (10), insbesondere für ein Fahrzeug mit Dieselmotor, weist einen ersten abgasdurchströmten Einleger (22), einen in Strömungsrichtung hinter diesem angeordneten abgasdurchströmten zweiten Einleger (24) und eine zwischen den Einlegern (22, 24) angeordnete Einspritzeinrichtung (28) für ein Fluid auf. In Strömungsrichtung (A) hinter dem ersten Einleger (22) ist ein Verwirbelungselement (30) im Strömungsweg des Abgases vorgesehen.An exhaust system (10), in particular for a vehicle with a diesel engine, has a first exhaust gas flowed through insert (22), a second insert (24) arranged downstream in the flow direction, and an injection device (28) arranged between the inserts (22, 24) a fluid on. In the flow direction (A) behind the first insert (22), a swirling element (30) is provided in the flow path of the exhaust gas.
Description
Die Erfindung betrifft eine Abgasanlage, insbesondere für ein Fahrzeug mit Dieselmotor, mit einem ersten abgasdurchströmten Einleger und einem in Strömungsrichtung hinter diesem angeordneten abgasdurchströmten zweiten Einleger, und einer zwischen den Einlegern angeordneten Einspritzeinrichtung für ein Fluid.The The invention relates to an exhaust system, in particular for a vehicle with diesel engine, with a first exhaust gas flowed insert and a in flow direction behind this arranged exhaust gas flowed through the second insert, and a fluid injection device disposed between the inlays.
Zur Einhaltung umweltgesetzlicher Vorgaben muss die Menge der im Abgas eines Dieselmotors enthaltenen Partikel reduziert werden. Dazu werden in Fahrzeugen Partikelfilter in die Abgasanlage eingebaut, die die im Abgas enthaltenen Partikel zurückhalten. Um eine Beeinträchtigung der Funktion des Filters und somit der Abgasanlage durch die auf der Filteroberfläche angesammelten Partikel zu verhindern, muss der Filter von Zeit zu Zeit regeneriert werden. Dies erfolgt, indem die auf der Filteroberfläche angesammelten Partikel durch Zuführung von Wärme verbrannt werden.to Compliance with environmental regulations requires the amount of exhaust gas a diesel engine contained particles are reduced. This will be done in Vehicles particulate filter installed in the exhaust system, which the Retain particles contained in the exhaust gas. To an impairment the function of the filter and thus the exhaust system through the the filter surface To prevent accumulated particles, the filter needs to time Time to be regenerated. This is done by collecting on the filter surface Particles through delivery of heat to be burned.
Zur Erzeugung der für die Verbrennung notwendigen Temperaturen wird beispielsweise eine oxidierbare Flüssigkeit vor dem Partikelfilter in den Abgasstrom eingebracht, die mit dem im Abgas enthaltenen Restsauerstoff reagiert. Um eine gleichmäßige Regeneration des Partikelfilters zu erreichen, muss die Verbrennungsreaktion möglichst gleichmäßig über den gesamten Querschnitt der Abgasleitung verteilt erfolgen.to Generation of for the combustion necessary temperatures becomes, for example, an oxidizable liquid before the particulate filter introduced into the exhaust stream, which with the Reactive oxygen contained in the exhaust gas reacts. For an even regeneration To achieve the particulate filter, the combustion reaction preferably evenly over the distributed throughout the cross section of the exhaust pipe.
Aufgabe der Erfindung ist es, eine Abgasanlage zu schaffen, die eine gleichmäßige Wärmeentwicklung und somit eine gleichmäßige Verbrennung der Partikel ermöglicht.task The invention is to provide an exhaust system, which generates a uniform heat and thus a uniform combustion of Allows particles.
Zur Lösung der Aufgabe ist eine Abgasanlage vorgesehen, insbesondere für ein Fahrzeug mit Dieselmotor, mit einem ersten abgasdurchströmten Einleger, einem in Strömungsrichtung hinter diesem angeordneten abgasdurchströmten zweiten Einleger und einer zwischen den Einlegern angeordneten Einspritzeinrichtung für ein Fluid. In Strömungsrichtung hinter dem ersten Einleger ist ein Verwirbelungselement im Strömungsweg des Abgases vorgesehen. In der durch das Verwirbelungselement erzeugten Verwirbelung erfolgt eine homogenere Durchmischung des eingebrachten Fluids mit dem Abgasstrom. Dadurch kann das Fluid über den gesamten Strömungsquerschnitt gleichmäßiger verteilt werden, sodass eine bessere Wärmeentwicklung und somit eine effektivere Regeneration des nachfolgenden zweiten Einlegers erreicht wird.to solution the object is provided an exhaust system, in particular for a vehicle with diesel engine, with a first exhaust gas flowed insert, one in the flow direction behind this arranged exhaust gas flowed through the second insert and a between the inserts arranged injector for a fluid. In flow direction behind the first insert is a swirling element in the flow path the exhaust gas provided. In the generated by the swirl element Verwirbelung takes place a more homogeneous mixing of the introduced Fluids with the exhaust stream. This allows the fluid over the entire flow cross section evenly distributed so that better heat development and thus a more effective regeneration of the subsequent second inserter is reached.
Vorzugsweise weist das Verwirbelungselement Aussparungen auf, durch die das Abgas strömt. Dadurch ist eine effektive Kontrolle des Abgasstroms und somit eine gute Umlenkung bzw. eine gute Verwirbelung des Abgasstroms möglich.Preferably has the swirling element recesses through which the exhaust gas flows. Thereby is an effective control of the exhaust flow and thus a good one Deflection or a good turbulence of the exhaust stream possible.
Um den gesamten Abgasstrom zu beeinflussen und um eine vollständige Durchmischung von Abgas und Fluid zu erreichen, erstreckt sich das Verwirbelungselement idealerweise über den gesamten Querschnitt der Abgasleitung.Around to influence the entire exhaust flow and to ensure thorough mixing To achieve exhaust gas and fluid, the swirling element extends ideally over the entire cross section of the exhaust pipe.
Eine besonders gleichmäßige Verteilung des Fluids wird erreicht, indem durch das Verwirbelungselement über den gesamten Querschnitt der Abgasleitung Verwirbelungen erzeugt werden.A especially even distribution of the fluid is achieved by passing through the swirling element over the Whole cross-section of the exhaust pipe turbulence can be generated.
Vorzugsweise weist das Verwirbelungselement Ablenkplatten auf, die zur Strömungsrichtung geneigt sind. Diese sind im Abgasstrom angeordnet und lenken den Abgasstrom oder Teile davon um, sodass hinter dem Verwirbelungselement ein Wirbel entsteht.Preferably the swirling element has baffle plates which are inclined to the flow direction are. These are arranged in the exhaust gas flow and direct the exhaust gas flow or parts of it, so that behind the swirl element Whirl arises.
Der Winkel, in dem diese Ablenkplatten zur Abgasströmung stehen, hat großen Einfluss auf die Effektivität des Verwirbelungselements. So ist es vorteilhaft, wenn die Ablenkplatten mindestens zwei Abschnitte aufweisen, die in verschiedenen Winkeln zur Strömungsrichtung geneigt sind.Of the Angle, in which these baffles are the exhaust gas flow, has great influence on the effectiveness of the swirling element. So it is beneficial if the baffles have at least two sections at different angles to the flow direction are inclined.
Besonders vorteilhaft ist es, wenn der Neigungswinkel der Abschnitte in Strömungsrichtung zunimmt. Dadurch ist eine sehr effektive Beeinflussung des Abgasstromes möglich.Especially It is advantageous if the angle of inclination of the sections in the flow direction increases. This is a very effective influence on the exhaust gas flow possible.
Idealerweise sind die Ablenkplatten in einem Winkel von mindestens 30° zur Strömungsrichtung geneigt.Ideally the baffles are inclined at an angle of at least 30 ° to the flow direction.
Die Ablenkelemente können beispielsweise radial angeordnet und gleichmäßig über den gesamten Querschnitt verteilt sein.The Baffles can for example, radially arranged and uniform over the entire cross section be distributed.
Die Ablenkelemente sind insbesondere ähnlich einem Stator einer Turbine angeordnet und erzeugen hinter dem Verwirbelungselement einen Wirbel, in dem das eingebrachte Fluid effektiv über den gesamten Querschnitt der Abgasleitung verteilt werden kann.The Baffle elements are particularly similar to a stator of a turbine arranged and produce behind the swirling element a vortex, in which the introduced fluid effectively over the entire cross section the exhaust pipe can be distributed.
Die radial angeordneten Ablenkelemente können beispielsweise eine Öffnung in der Mitte des Verwirbelungselements umschließen, durch die der Abgasstrom fließen kann.The radially arranged baffles, for example, an opening in enclose the center of the swirling element, through which the exhaust gas flow flow can.
Vor dieser Öffnung kann vorzugsweise eine senkrecht zur Strömungsrichtung stehende Prallplatte vorgesehen sein, die den Abgasstrom auf die Ablenkelemente lenkt.In front this opening may preferably be a perpendicular to the flow direction baffle plate be provided, which directs the exhaust gas flow to the baffles.
Die Ablenkelemente können aber auch parallel zueinander angeordnet sein, sodass sie insgesamt eine Gitterstruktur bilden, durch die der Abgasstrom umgelenkt wird.However, the deflecting elements can also be arranged parallel to one another, so that they form a total of a grid structure through which the exhaust gas electricity is diverted.
Um die Wirkung des Verwirbelungselements zu steigern, verjüngt sich der abgasdurchströmte Querschnitt der Abgasleitung in einem in Strömungsrichtung direkt vor dem Verwirbelungselement liegenden Abschnitt und/oder weitet sich in einem in Strömungsrichtung direkt nach dem Verwirbelungselement liegenden Abschnitt. Durch eine Verjüngung des Querschnitts vor dem Verwirbelungselement wird die Anströmgeschwindigkeit erhöht, sodass der Abgasstrom mit einer höheren Geschwindigkeit auf das Verwirbelungselement trifft. Zudem ist durch den verkleinerten Querschnitt das Verhältnis des Rohrquerschnitts zum Verdampfer günstiger. Durch die Aufweitung des Querschnitts nach dem Verwirbelungselement wird der Abgasstrom dagegen verlangsamt, sodass sich das Fluid über einen längeren Zeitraum mit dem Abgasstrom vermischen kann.Around increasing the effect of the swirling element, rejuvenates the exhaust gas flow cross section the exhaust pipe in a flow direction directly before the turbulator lying section and / or expands in a direction of flow directly after the swirling element lying section. By a rejuvenation of the Cross section before the swirling element is the flow velocity elevated, so that the exhaust gas flow at a higher speed on the Verwirbelungselement meets. In addition, due to the reduced cross-section The relationship the pipe cross section to the evaporator cheaper. By the expansion of the cross section after the swirling element becomes the exhaust gas flow slows down, so that the fluid over a longer period of time with the exhaust gas flow can mix.
Die Einleger können beispielsweise Partikelfilter, insbesondere Dieselpartikelfilter sein. Durch das Verwirbelungselement kann eine homogene Verbrennung eines eingebrachten Fluids erfolgen, sodass eine gleichmäßige Regeneration der gesamten Filteroberfläche erreicht wird.The Depositors can For example, particulate filter, in particular diesel particulate filter be. Due to the swirling element can be a homogeneous combustion an introduced fluid, so that a uniform regeneration the entire filter surface is reached.
Der erste Einleger ist z. B. ein Vorfilter, der zweite Einleger kann ein Dieselpartikelfilter mit Dieseloxidationskatalysator sein. Durch einen solchen Dieseloxidationskatalysator kann die Abgastemperatur weiter erhöht werden, sodass eine effektivere Regeneration des nachfolgenden Filters erfolgen kann.Of the first depositor is z. B. a pre-filter, the second depositor can a diesel particulate filter with diesel oxidation catalyst. By such a diesel oxidation catalyst, the exhaust gas temperature further increased so that a more effective regeneration of the subsequent filter can be done.
Das vorgelagerte Verwirbelungselement verwirbelt den Abgasstrom mit der darin enthaltenen Flüssigkeit, sodass die komplette Fläche des Dieseloxidationskatalysators genutzt werden kann.The vorgelagerte swirling element swirls with the exhaust stream the liquid contained therein, so that the complete area the diesel oxidation catalyst can be used.
Vorzugsweise ist die Einspritzeinrichtung Teil einer Regenerationseinrichtung. Durch eine solche Regenerationseinrichtung wird eine oxidierbare Flüssigkeit in den Abgasstrom eingebracht, die durch eine exotherme Reaktion mit dem Sauerstoff des Abgases zu einer Temperaturerhöhung führt, durch die ein nachgelagerter Partikelfilter regeneriert werden kann.Preferably the injector is part of a regeneration device. By such a regeneration device is an oxidizable liquid introduced into the exhaust gas stream by an exothermic reaction with the oxygen of the exhaust gas leads to a temperature increase, through a downstream particle filter can be regenerated.
Die Einspritzeinrichtung weist dazu vorzugsweise einen Kraftstoffverdampfer auf. Durch diesen wird der Kraftstoff vor dem Einspritzen in die Abgasleitung verdampft, sodass er sich gut mit dem Abgasstrom durchmischt und leichter mit dem Restsauerstoff im Abgas reagiert.The Injection device preferably has a fuel evaporator for this purpose on. Through this, the fuel before injecting into the Exhaust pipe evaporates, so it mixes well with the exhaust stream and more easily react with the residual oxygen in the exhaust.
Eine solche Einspritzeinrichtung kann vor oder nach dem Verwirbelungselement angeordnet sein. Dadurch wird das Fluid entweder vor der Verwirbelung in den Abgasstrom eingebracht und durch das Verwirbelungselement mit dem Abgasstrom durchmischt oder nach dem Verwirbelungselement in den bereits erzeugten Wirbel eingebracht.A such injector may be before or after the swirling element be arranged. This causes the fluid to either swirl introduced into the exhaust stream and through the swirling element mixed with the exhaust stream or after the swirling element introduced into the already generated vortex.
Die Einspritzeinrichtung kann aber auch, beispielsweise aus Platzgründen, in das Verwirbelungselement integriert sein.The Injection device can also, for example, for reasons of space, in the swirl element be integrated.
Vorzugsweise sind der erste Einleger und der zweite Einleger mit dem Verwirbelungselement in einem gemeinsamen Gehäuse angeordnet. Dadurch wird eine sehr kompakte Bauweise der Abgasanlage erreicht.Preferably are the first insert and the second insert with the swirl element in a common housing arranged. As a result, a very compact design of the exhaust system is achieved.
Das Verwirbelungselement kann ein statischer Mischer sein, d. h. das Verwirbelungselement weist keine beweglichen Teile auf, und es ist keine externe Steuerung beispielsweise der Ablenkplatten notwendig.The Swirl element may be a static mixer, i. H. the Swirl element has no moving parts, and it is no external control, for example, the baffles necessary.
Vorzugsweise ist das Verwirbelungselement ein vorgefertigtes, in die Abgasleitung eingesetztes Bauteil.Preferably the vortex element is a prefabricated, in the exhaust pipe inserted component.
Weitere Vorteile und Merkmale ergeben sich aus der nachfolgenden Beschreibung in Verbindung mit den beigefügten Zeichnungen. In diesen zeigen:Further Advantages and features will become apparent from the following description in conjunction with the attached Drawings. In these show:
Die
in
Das
in den Hohlraum
Zwischen
Einspritzeinrichtung
Der
mit dem Fluid angereicherte Abgasstrom durchströmt die Öffnung
Die
Die
Abgasanlage
Der
Zwischenabschnitt
Die
in
Der
Zwischenabschnitt
Die
Einspritzeinrichtung
Die
Einspritzeinrichtung
Es
sind auch Ausführungsformen
denkbar, bei denen die Einspritzeinrichtung
Die
Einspritzeinrichtung
Die
Das
Verwirbelungselement
Die
Anzahl der Ablenkelement
In
der Mitte des Verwirbelungselements
Eine
solche Ausführungsform
ist beispielsweise in
Zudem
ist das Mantelgehäuse
des Verwirbelungselements
Das
Mantelgehäuse
des Verwirbelungselements
Eine
weitere Ausführungsform
eines Verwirbelungselements
Claims (23)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008053669A DE102008053669A1 (en) | 2008-10-29 | 2008-10-29 | Exhaust system for a vehicle |
US12/607,278 US20100101219A1 (en) | 2008-10-29 | 2009-10-28 | Exhaust system for a vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008053669A DE102008053669A1 (en) | 2008-10-29 | 2008-10-29 | Exhaust system for a vehicle |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102008053669A1 true DE102008053669A1 (en) | 2010-05-06 |
Family
ID=42062915
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102008053669A Pending DE102008053669A1 (en) | 2008-10-29 | 2008-10-29 | Exhaust system for a vehicle |
Country Status (2)
Country | Link |
---|---|
US (1) | US20100101219A1 (en) |
DE (1) | DE102008053669A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2865861B1 (en) | 2013-10-22 | 2016-04-27 | Eberspächer Exhaust Technology GmbH & Co. KG | Catalyst assembly with injection section |
WO2016089295A3 (en) * | 2014-12-04 | 2016-07-21 | Powercell Sweden Ab | Carbon monoxide oxidation device |
DE102015209712A1 (en) * | 2015-05-27 | 2016-12-01 | Bayerische Motoren Werke Aktiengesellschaft | Dosing system for selective catalytic reduction, preferably in a motor vehicle |
Families Citing this family (4)
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JP5616194B2 (en) * | 2010-01-14 | 2014-10-29 | 株式会社クボタ | Engine with exhaust treatment device |
EP2474721A1 (en) * | 2011-01-11 | 2012-07-11 | Etablissements CAILLAU | Connection device between tubes and clamping system including such connection device |
DE102012224198B4 (en) * | 2012-12-21 | 2023-07-06 | Friedrich Boysen Gmbh & Co. Kg | Arrangement for introducing an additive into a gas stream and exhaust system |
US10352220B2 (en) * | 2014-05-30 | 2019-07-16 | Futaba Industrial Co., Ltd. | Exhaust gas stirring device |
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US20060283181A1 (en) * | 2005-06-15 | 2006-12-21 | Arvin Technologies, Inc. | Swirl-stabilized burner for thermal management of exhaust system and associated method |
ATE549495T1 (en) * | 2004-07-16 | 2012-03-15 | Nissan Diesel Motor Co | EXHAUST GAS PURIFICATION DEVICE FOR AN COMBUSTION ENGINE |
DE202005001257U1 (en) * | 2004-09-17 | 2005-04-07 | Arvinmeritor Emissions Tech | Exhaust system of a motor vehicle with diesel engine |
WO2006137694A1 (en) * | 2005-06-22 | 2006-12-28 | Korea Institute Of Machinery And Materials | Burner for regeneration of diesel engine particulate filter and diesel engine particulate filter having the same |
DE102006055036B4 (en) * | 2006-11-22 | 2023-03-02 | Faurecia Emissions Control Technologies, Germany Gmbh | Mixing element and exhaust system for an internal combustion engine |
DE102007009890A1 (en) * | 2007-02-28 | 2008-09-04 | Arvinmeritor Emissions Technologies Gmbh | Static mixing element, particularly arrangement in exhaust gas system of internal combustion engine, has grid-like component through which exhaust gas flows and component is formed in single-piece |
US7908845B2 (en) * | 2007-04-16 | 2011-03-22 | GM Global Technology Operations LLC | Mixing apparatus for an exhaust after-treatment system |
US8915064B2 (en) * | 2007-05-15 | 2014-12-23 | Donaldson Company, Inc. | Exhaust gas flow device |
US8141353B2 (en) * | 2008-04-25 | 2012-03-27 | Tenneco Automotive Operating Company Inc. | Exhaust gas additive/treatment system and mixer for use therein |
US8745978B2 (en) * | 2008-09-19 | 2014-06-10 | Renault Trucks | Mixing device in an exhaust gas pipe |
US20100077742A1 (en) * | 2008-09-30 | 2010-04-01 | Gm Global Technology Operations | Flow diffuser for an exhaust system |
-
2008
- 2008-10-29 DE DE102008053669A patent/DE102008053669A1/en active Pending
-
2009
- 2009-10-28 US US12/607,278 patent/US20100101219A1/en not_active Abandoned
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2865861B1 (en) | 2013-10-22 | 2016-04-27 | Eberspächer Exhaust Technology GmbH & Co. KG | Catalyst assembly with injection section |
EP2865861B2 (en) † | 2013-10-22 | 2019-05-15 | Eberspächer Exhaust Technology GmbH & Co. KG | Catalyst assembly with injection section |
WO2016089295A3 (en) * | 2014-12-04 | 2016-07-21 | Powercell Sweden Ab | Carbon monoxide oxidation device |
US10464027B2 (en) | 2014-12-04 | 2019-11-05 | Powercell Sweden Ab | Carbon monoxide oxidation device |
DE102015209712A1 (en) * | 2015-05-27 | 2016-12-01 | Bayerische Motoren Werke Aktiengesellschaft | Dosing system for selective catalytic reduction, preferably in a motor vehicle |
DE102015209712B4 (en) | 2015-05-27 | 2023-11-02 | Bayerische Motoren Werke Aktiengesellschaft | Dosing system for selective catalytic reduction, preferably in a motor vehicle |
Also Published As
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US20100101219A1 (en) | 2010-04-29 |
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