DE102009029420A1 - Mixing device for mounting in exhaust tract of internal combustion engine, comprises mixing element, which produces turbulence of exhaust gas flow flowing through exhaust tract - Google Patents
Mixing device for mounting in exhaust tract of internal combustion engine, comprises mixing element, which produces turbulence of exhaust gas flow flowing through exhaust tract Download PDFInfo
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- DE102009029420A1 DE102009029420A1 DE102009029420A DE102009029420A DE102009029420A1 DE 102009029420 A1 DE102009029420 A1 DE 102009029420A1 DE 102009029420 A DE102009029420 A DE 102009029420A DE 102009029420 A DE102009029420 A DE 102009029420A DE 102009029420 A1 DE102009029420 A1 DE 102009029420A1
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- exhaust gas
- mixing
- exhaust
- gas flow
- mixing device
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—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
- 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
- B01F25/4311—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor the baffles being adjustable
-
- 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
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Dispersion Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
Stand der TechnikState of the art
Die Erfindung betrifft eine Mischvorrichtung zur Montage in einem Abgasstrang eines Verbrennungsmotors.The invention relates to a mixing device for mounting in an exhaust system of an internal combustion engine.
Es ist bekannt, zur katalytischen Nachbehandlung von Abgasen eines Verbrennungsmotors, insbesondere eines Dieselmotors, ein Fluid, wie z. B. eine wässrige Harnstofflösung, in den Abgasstrang eines Verbrennungsmotors einzuspritzen. Vor allem bei niedrigen Abgastemperaturen, wie sie bspw. im Leerlauf oder Teillastbereich des Verbrennungsmotors auftreten, ist eine Verwirbelung der Abgasströmung notwendig, um eine gute Vermischung des eingespritzten Fluids mit der Abgasströmung zu erreichen. Bei hohen Temperaturen und einem hohen Abgasmassestrom, wie sie bspw. im Volllastbetrieb auftreten, ist eine gute Durchmischung weniger erforderlich, da die hohen Temperaturen das Fluid schnell verdampfen lassen. In diesem Fall führen Mischelemente, die eine Verwirbelung der Abgasströmung bewirken, nur zu einem erhöhten Strömungswiderstand, der zu einem erhöhten Kraftstoffverbrauch des Verbrennungsmotors führt.It is known for the catalytic aftertreatment of exhaust gases of an internal combustion engine, in particular a diesel engine, a fluid such. As an aqueous urea solution to inject into the exhaust system of an internal combustion engine. Especially at low exhaust gas temperatures, as they occur, for example, idle or partial load range of the internal combustion engine, a turbulence of the exhaust gas flow is necessary to achieve a good mixing of the injected fluid with the exhaust gas flow. At high temperatures and high exhaust mass flow, as they occur, for example, in full load operation, good mixing is less required because the high temperatures allow the fluid to evaporate quickly. In this case, mixing elements, which cause a turbulence of the exhaust gas flow, only lead to an increased flow resistance, which leads to an increased fuel consumption of the internal combustion engine.
Offenbarung der ErfindungDisclosure of the invention
Eine Aufgabe der Erfindung ist es, eine kostengünstig herzustellende Mischvorrichtung zur Montage in einem Abgasstrang eines Verbrennungsmotors bereitzustellen, die bei geringen Abgastemperaturen eine gute Verwirbelung der Abgasströmung bewirkt und die bei hohen Abgastemperaturen einen möglichst geringen Strömungswiderstand hat.An object of the invention is to provide a low-cost mixing device for mounting in an exhaust line of an internal combustion engine, which causes a good turbulence of the exhaust gas flow at low exhaust gas temperatures and has the lowest possible flow resistance at high exhaust gas temperatures.
Diese Aufgabe wird von einer Mischvorrichtung gemäß dem unabhängigen Patentanspruch 1 gelöst. Die abhängigen Patentansprüche beschreiben vorteilhafte Ausgestaltungen einer erfindungsgemäßen Mischvorrichtung. Die Erfindung betrifft auch eine Vorrichtung zur Behandlung einer durch einen Abgasstrang strömenden Abgasströmung, die eine erfindungsgemäße Mischvorrichtung aufweist.This object is achieved by a mixing device according to independent claim 1. The dependent claims describe advantageous embodiments of a mixing device according to the invention. The invention also relates to a device for treating an exhaust gas flow flowing through an exhaust gas line, which has a mixing device according to the invention.
Eine erfindungsgemäße Mischvorrichtung zur Montage in einem Abgasstrang eines Verbrennungsmotors weist wenigstens ein Mischelement auf, das zwischen wenigstens einer Mischposition, in der es eine gute Verwirbelung einer durch den Abgasstrang strömenden Abgasströmung bewirkt, und wenigstens einer Ruheposition, in der es für die Abgasströmung einen möglichst geringen Strömungswiderstand darstellt, bewegbar ist. Die Mischvorrichtung weist wenigstens ein Bi-Metall-Element auf, das so in der Mischvorrichtung angebracht ist, dass es das Mischelement bewegt, wenn sich die Temperatur der Abgasströmung ändert.A mixing device according to the invention for mounting in an exhaust line of an internal combustion engine has at least one mixing element which effects at least one mixing position in which there is a good swirling of an exhaust gas flow flowing through the exhaust line, and at least one rest position in which it is as small as possible for the exhaust gas flow Represents flow resistance, is movable. The mixing device has at least one bi-metal element mounted in the mixing device so as to move the mixing element when the temperature of the exhaust gas flow changes.
Insbesondere wird das Mischelement bei Temperaturänderungen der Abgasströmung durch das Bi-Metall-Element so bewegt, dass es in einer Mischposition angeordnet ist, wenn die Temperatur der Abgasströmung unterhalb eines vorgegebenen Grenzwertes liegt, und das Mischelement in einer Ruheposition angeordnet ist, wenn die Temperatur der Abgasströmung oberhalb eines vorgegebenen Grenzwertes liegt.Specifically, when the temperature changes of the exhaust gas flow through the bi-metal element, the mixing element is moved to be in a mixing position when the temperature of the exhaust gas flow is below a predetermined limit, and the mixing element is disposed in a rest position when the temperature of the Exhaust gas flow is above a predetermined limit.
Dadurch, dass das Mischelement einer erfindungsgemäßen Mischvorrichtung bei einer Temperatur der Abgasströmung, die unterhalb einer vorgegebenen Temperatur liegt, in eine Mischposition bewegt wird, wird die Abgasströmung bei einer niedrigen Abgastemperatur gut verwirbelt, so dass eine gute Mischung der Abgasströmung mit in den Abgasstrang eingespritztem Fluid gewährleistet ist. Bei hohen Abgastemperaturen, bei denen eine Verwirbelung zur guten Vermischung des Fluids mit der Abgasströmung nicht erforderlich ist, wird das Mischelement durch das Bi-Metall-Element in eine Ruheposition bewegt, in der das Mischelement für die Abgasströmung keinen hohen Strömungswiderstand darstellt.Characterized in that the mixing element of a mixing device according to the invention is moved to a mixing position at a temperature of the exhaust gas flow, which is below a predetermined temperature, the exhaust gas flow is well swirled at a low exhaust gas temperature, so that a good mixture of the exhaust gas flow with injected into the exhaust line fluid is guaranteed. At high exhaust gas temperatures, where turbulence is not required for good mixing of the fluid with the exhaust gas flow, the mixing element is moved by the bi-metal element to a rest position in which the exhaust gas flow mixing element is not a high flow resistance.
Eine erfindungsgemäße Mischvorrichtung bewirkt daher eine gute Vermischung des eingespritzten Fluids mit der Abgasströmung bei niedrigen Temperaturen und einen geringen Strömungswiderstand bei hohen Abgastemperaturen. Dadurch wird auch bei niedrigen Abgastemperaturen eine effektive Nachbehandlung der Abgasströmung mit dem eingespritzten Fluid ermöglicht und gleichzeitig wird bei hohen Abgastemperaturen ein Kraftstoffmehrverbrauch des Verbrennungsmotors, der durch eine Verwirbelung der Abgasströmung und einen dadurch verursachten erhöhten Strömungswiderstand im Abgasstrang bewirkt wird, vermieden. Eine erfindungsgemäße Mischvorrichtung ist einfach und kostengünstig herstellbar, da sie keine aufwändigen Steuervorrichtungen und/oder Aktoren benötigt.A mixing device according to the invention therefore causes a good mixing of the injected fluid with the exhaust gas flow at low temperatures and a low flow resistance at high exhaust gas temperatures. As a result, an effective after-treatment of the exhaust gas flow with the injected fluid is made possible even at low exhaust gas temperatures and at the same time a higher fuel consumption of the internal combustion engine, which is caused by turbulence of the exhaust gas flow and thereby caused increased flow resistance in the exhaust system, avoided. A mixing device according to the invention is simple and inexpensive to produce, since it requires no expensive control devices and / or actuators.
In einer Ausführungsform ist das Mischelement selbst aus Bi-Metall ausgebildet. Eine solche Mischvorrichtung ist besonders einfach herstellbar, da Verbindungs- und Montagestellen zwischen dem Mischelement und einem separaten Bi-Metall-Element entfallen.In one embodiment, the mixing element itself is formed of bi-metal. Such a mixing device is particularly easy to manufacture, since connection and assembly points between the mixing element and a separate bi-metal element omitted.
In einer alternativen Ausführungsform ist das Mischelement aus einem anderen Material als Bi-Metall hergestellt und wird in einem Fertigungs- und/oder Montageschritt mit einem Bi-Metall-Element verbunden. Bei einer solchen Mischvorrichtung sind auch große Mischelemente kostengünstig herstellbar, da der Anteil teuren Bi-Metalls an der Mischvorrichtung reduziert ist.In an alternative embodiment, the mixing element is made of a different material than bi-metal and is connected in a manufacturing and / or assembly step with a bimetallic element. In such a mixing device and large mixing elements are inexpensive to produce, since the proportion of expensive bi-metal is reduced at the mixing device.
In einer Ausführungsform ist das Mischelement in der Einbauposition an einer Haltevorrichtung befestigt. Eine Haltevorrichtung ermöglicht eine besonders einfache Befestigung des Mischelements. Insbesondere kann das Mischelement bei Verwendung einer entsprechend ausgebildeten Befestigungsvorrichtung bei Bedarf leicht ausgetauscht werden. In one embodiment, the mixing element is mounted in the mounting position on a holding device. A holding device allows a particularly simple attachment of the mixing element. In particular, the mixing element can be easily replaced when required using a correspondingly formed fastening device as needed.
In einer Ausführungsform ist die Haltevorrichtung in der Einbauposition quer zur Abgasströmung in dem Abgasstrang angeordnet. Durch Mischelemente, die an einer Haltevorrichtung angebracht sind, die quer zur Abgasströmung in dem Abgasstrang angeordnet ist, wird die Abgasströmung besonders effektiv verwirbelt.In one embodiment, the holding device is arranged in the installed position transversely to the exhaust gas flow in the exhaust line. By mixing elements, which are mounted on a holding device, which is arranged transversely to the exhaust gas flow in the exhaust line, the exhaust gas flow is particularly effectively swirled.
In einer Ausführungsform ist wenigstens ein Mischelement an einer Wand des Abgasstrangs angebracht. Eine Mischvorrichtung, bei der Mischelemente an einer Wand des Abgasstrangs angeordnet sind, ist besonders einfach herstellbar, da auf eine zusätzliche Haltevorrichtung verzichtet werden kann.In one embodiment, at least one mixing element is attached to a wall of the exhaust line. A mixing device, are arranged in the mixing elements on a wall of the exhaust line, is particularly easy to produce, since it can be dispensed with an additional holding device.
In einer Ausführungsform weist die Mischvorrichtung mehrere Mischelemente auf. Eine Mischvorrichtung, die mehrere Mischelemente aufweist, ermöglicht eine besonders effektive Verwirbelung der Abgasströmung im Abgasstrang.In one embodiment, the mixing device has a plurality of mixing elements. A mixing device having a plurality of mixing elements, allows a particularly effective turbulence of the exhaust gas flow in the exhaust system.
In einer Ausführungsform sind die Mischelemente sternförmig in dem Abgasstrang angeordnet. Eine sternförmige Anordnung der Mischelemente ermöglicht eine besonders effektive Verwirbelung der Abgasströmung in dem Abgasstrang. Die Mischelemente können im äußeren Bereich des Abgasstrangs befestigt sein und sich in Richtung auf die Mitte des Abgasstrangs erstrecken. Alternativ können die Mischelemente an einer Befestigungsvorrichtung in der Mitte des Abgasstrangs befestigt sein und sich von dieser Befestigungsvorrichtung radial nach außen erstrecken.In one embodiment, the mixing elements are arranged in a star shape in the exhaust line. A star-shaped arrangement of the mixing elements allows a particularly effective turbulence of the exhaust gas flow in the exhaust system. The mixing elements may be mounted in the outer region of the exhaust line and extending in the direction of the center of the exhaust line. Alternatively, the mixing elements may be attached to a fixture in the center of the exhaust line and extend radially outwardly from this fixture.
In einer Ausführungsform sind die Mischelemente parallel zueinander in dem Abgasstrang angeordnet. Insbesondere können die Mischelemente in einer regelmäßigen, z. B. schachbrettartigen Anordnung in dem Abgasstrang angeordnet sein. Eine solche Anordnung der Mischelemente ermöglicht eine besonders effektive Verwirbelung der Abgasströmung.In one embodiment, the mixing elements are arranged parallel to one another in the exhaust gas line. In particular, the mixing elements in a regular, z. B. checkered arrangement can be arranged in the exhaust line. Such an arrangement of the mixing elements enables a particularly effective turbulence of the exhaust gas flow.
Die Erfindung betrifft auch eine Vorrichtung zur Behandlung einer durch einen Abgasstrang strömenden Abgasströmung eines Verbrennungsmotors mit einer Dosiervorrichtung, die ausgebildet ist, um wenigstens ein Fluid in den Abgasstrang einzubringen, wenigstens einer erfindungsgemäßen Mischvorrichtung, die zur Verwirbelung einer durch den Abgasstrang strömenden Abgasströmung ausgebildet ist, und einem Katalysator, der zur selektiven katalytischen Reaktion des eindosierten Fluids mit wenigstens einem Bestandteil der Abgasströmung ausgebildet ist.The invention also relates to a device for treating an exhaust gas flow of an internal combustion engine flowing through an exhaust gas line with a metering device which is designed to introduce at least one fluid into the exhaust gas line, at least one mixing device according to the invention, which is designed to swirl an exhaust gas flow flowing through the exhaust gas line, and a catalyst configured to selectively catalyze the metered-in fluid with at least one component of the exhaust gas flow.
In einer Ausführungsform einer solchen erfindungsgemäßen Vorrichtung ist die Mischvorrichtung stromaufwärts der Dosiervorrichtung angeordnet, so dass die durch den Abgasstrang strömende Abgasströmung verwirbelt wird, bevor das Fluid aus der Dosiervorrichtung in die Abgasströmung eingespritzt wird.In one embodiment of such a device according to the invention, the mixing device is arranged upstream of the metering device, so that the exhaust gas flow flowing through the exhaust gas line is swirled before the fluid is injected from the metering device into the exhaust gas flow.
In einer alternativen Ausführungsform ist die Mischvorrichtung stromabwärts der Dosiervorrichtung angeordnet, so dass die Abgasströmung durch die Mischvorrichtung verwirbelt wird, nachdem das Fluid in die Abgasströmung eingespritzt worden ist.In an alternative embodiment, the mixing device is disposed downstream of the metering device such that the exhaust gas flow is fluidized by the mixing device after the fluid has been injected into the exhaust gas flow.
In einer dritten Ausführungsform ist sowohl stromaufwärts als auch stromabwärts der Dosiervorrichtung eine Mischvorrichtung vorgesehen, so dass die Abgasströmung vor und nach dem Passieren der Dosiervorrichtung verwirbelt wird. Dies bewirkt eine besonders gute Verwirbelung der Abgasströmung und somit eine besonders effektive Vermischung des eindosierten Fluids mit der Abgasströmung.In a third embodiment, a mixing device is provided both upstream and downstream of the metering device, so that the exhaust gas flow is vortexed before and after passing through the metering device. This causes a particularly good turbulence of the exhaust gas flow and thus a particularly effective mixing of the metered-in fluid with the exhaust gas flow.
Die Erfindung wird im Folgenden anhand der beigefügten Figuren näher erläutert. Dabei zeigt:The invention will be explained in more detail below with reference to the attached figures. Showing:
Die Vorrichtung
An dem verbrennungsmotorseitigen Abgasstrang
Stromabwärts der Dosiervorrichtung
Stromabwärts der Mischvorrichtung
Stromabwärts des Katalysators
Im weiteren, nicht gezeigten Verlauf des Abgasstrangs
Die Abgasstrang
In der oberen Hälfte der
In dieser Orientierung bei hohen Abgastemperaturen stellen die Mischelemente
In der unteren Hälfte der
Die Bi-Metall-Elemente
In der oberen Hälfte des Abgasstrangs
In der unteren Hälfte der
Die in den
In einem weiteren, nicht gezeigten Ausführungsbeispiel erstrecken sich die Ablenkelemente
Die Bi-Metall-Elemente
Claims (11)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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DE102009029420A DE102009029420A1 (en) | 2009-09-14 | 2009-09-14 | Mixing device for mounting in exhaust tract of internal combustion engine, comprises mixing element, which produces turbulence of exhaust gas flow flowing through exhaust tract |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE102009029420A DE102009029420A1 (en) | 2009-09-14 | 2009-09-14 | Mixing device for mounting in exhaust tract of internal combustion engine, comprises mixing element, which produces turbulence of exhaust gas flow flowing through exhaust tract |
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Publication Number | Publication Date |
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DE102009029420A1 true DE102009029420A1 (en) | 2011-03-24 |
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DE102009029420A Withdrawn DE102009029420A1 (en) | 2009-09-14 | 2009-09-14 | Mixing device for mounting in exhaust tract of internal combustion engine, comprises mixing element, which produces turbulence of exhaust gas flow flowing through exhaust tract |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110258983A1 (en) * | 2010-04-23 | 2011-10-27 | Gm Global Technology Operations, Inc. | Reconfigurable mixer for an exhaust aftertreatment system and method of using the same |
CN102748112A (en) * | 2011-04-08 | 2012-10-24 | 通用汽车环球科技运作有限责任公司 | Reconfigurable bi-metallic mixer for an exhaust aftertreatment system and method of using the same |
-
2009
- 2009-09-14 DE DE102009029420A patent/DE102009029420A1/en not_active Withdrawn
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110258983A1 (en) * | 2010-04-23 | 2011-10-27 | Gm Global Technology Operations, Inc. | Reconfigurable mixer for an exhaust aftertreatment system and method of using the same |
US8935918B2 (en) * | 2010-04-23 | 2015-01-20 | GM Global Technology Operations LLC | Reconfigurable mixer for an exhaust aftertreatment system and method of using the same |
CN102748112A (en) * | 2011-04-08 | 2012-10-24 | 通用汽车环球科技运作有限责任公司 | Reconfigurable bi-metallic mixer for an exhaust aftertreatment system and method of using the same |
CN102748112B (en) * | 2011-04-08 | 2015-04-01 | 通用汽车环球科技运作有限责任公司 | Reconfigurable bi-metallic mixer for an exhaust aftertreatment system |
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