DE102012205350A1 - Device for cleaning the exhaust gas of an internal combustion engine - Google Patents
Device for cleaning the exhaust gas of an internal combustion engine Download PDFInfo
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- DE102012205350A1 DE102012205350A1 DE201210205350 DE102012205350A DE102012205350A1 DE 102012205350 A1 DE102012205350 A1 DE 102012205350A1 DE 201210205350 DE201210205350 DE 201210205350 DE 102012205350 A DE102012205350 A DE 102012205350A DE 102012205350 A1 DE102012205350 A1 DE 102012205350A1
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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
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
- F01N13/0093—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series the purifying devices are of the same type
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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
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
- F01N13/0097—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series the purifying devices are arranged in a single housing
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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
- 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
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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
- F01N2250/00—Combinations of different methods of purification
- F01N2250/02—Combinations of different methods of purification filtering and catalytic conversion
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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
- F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
- F01N2450/30—Removable or rechangeable blocks or cartridges, e.g. for filters
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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
- F01N2470/00—Structure or shape of gas passages, pipes or tubes
- F01N2470/14—Plurality of outlet tubes, e.g. in parallel or with different length
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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
- F01N2470/00—Structure or shape of gas passages, pipes or tubes
- F01N2470/16—Plurality of inlet tubes, e.g. discharging into different chambers
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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
- F01N2470/00—Structure or shape of gas passages, pipes or tubes
- F01N2470/18—Structure or shape of gas passages, pipes or tubes the axis of inlet or outlet tubes being other than the longitudinal axis of apparatus
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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
- F01N2470/00—Structure or shape of gas passages, pipes or tubes
- F01N2470/22—Inlet and outlet tubes being positioned on the same side of the apparatus
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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
- F01N2490/00—Structure, disposition or shape of gas-chambers
- F01N2490/02—Two or more expansion chambers in series connected by means of tubes
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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
- F01N2490/00—Structure, disposition or shape of gas-chambers
- F01N2490/02—Two or more expansion chambers in series connected by means of tubes
- F01N2490/06—Two or more expansion chambers in series connected by means of tubes the gases flowing longitudinally from inlet to outlet in opposite directions
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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
- F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
- F01N2590/02—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for marine vessels or naval applications
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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
- F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
- F01N2590/08—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for heavy duty applications, e.g. trucks, buses, tractors, locomotives
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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
- F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
- F01N2590/10—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for stationary applications
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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
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
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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
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/0217—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters the filtering elements having the form of hollow cylindrical bodies
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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]
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2892—Exhaust flow directors or the like, e.g. upstream of catalytic device
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Die Erfindung betrifft eine Vorrichtung zur Reinigung des Abgases eines Verbrennungsmotors, insbesondere eines Diesel- und/oder Großmotors, umfassend eine erste Reinigungsstufe (A) sowie eine zweite Reinigungsstufe (B) zur Reduzierung der im Abgas enthaltenen Rußpartikel und/oder Stickoxide, ferner umfassend eine Mischkammer (3), in welcher dem Abgas ein Reduktionsmittel, insbesondere eine wässrige Harnstofflösung, zwischen der ersten und der zweiten Reinigungsstufe (A, B) zuführbar ist. Erfindungsgemäß sind die erste und die zweite Reinigungsstufe (A, B) baulich hintereinandergeschaltet und die Mischkammer (3) ist auf der Seite der ersten Reinigungsstufe (A) angeordnet, die der zweiten Reinigungsstufe (B) abgewandt ist, wobei die Mischkammer (3) über wenigstens ein eine Umlenkung des Abgasstroms bewirkendes Mischrohr (4) mit der zweiten Reinigungsstufe (B) verbunden ist.The invention relates to a device for cleaning the exhaust gas of an internal combustion engine, in particular a diesel and / or large engine comprising a first cleaning stage (A) and a second purification stage (B) for reducing the soot particles and / or nitrogen oxides contained in the exhaust gas, further comprising a Mixing chamber (3), in which the exhaust gas, a reducing agent, in particular an aqueous urea solution, between the first and the second cleaning stage (A, B) can be fed. According to the first and the second cleaning stage (A, B) are structurally connected in series and the mixing chamber (3) is arranged on the side of the first cleaning stage (A), which faces away from the second cleaning stage (B), wherein the mixing chamber (3) at least one mixing pipe (4) effecting a diversion of the exhaust gas flow is connected to the second cleaning stage (B).
Description
Die Erfindung betrifft eine Vorrichtung zur Reinigung des Abgases eines Verbrennungsmotors, insbesondere eines Diesel- und/oder Großmotors, mit den Merkmalen des Oberbegriffs des Anspruchs 1.The invention relates to a device for cleaning the exhaust gas of an internal combustion engine, in particular a diesel and / or large engine, having the features of the preamble of
Stand der TechnikState of the art
Aufgrund stetig steigender Anforderungen im Hinblick auf die Reduzierung von umweltbelastenden Schadstoffen in den Abgasen von Verbrennungsmotoren, gilt es Maßnahmen zu treffen, welche den Rußpartikel- und Stickoxidausstoß zu verringern helfen. Dies gilt insbesondere für Diesel- und/oder Großmotoren, sowohl in mobiler, als auch in stationärer Anwendung. Hierzu eingesetzte Filter und Katalysatoren werden in der Regel hintereinandergeschaltet und erfordern auf diese Weise, insbesondere bei Großmotoren (> 560 KW), wie beispielsweise Schiffsmotoren, einen erheblichen Bauraumbedarf.Due to steadily increasing requirements with regard to the reduction of polluting substances in the exhaust gases of internal combustion engines, it is necessary to take measures which help to reduce soot particles and nitrogen oxide emissions. This is especially true for diesel and / or large engines, both in mobile, as well as in stationary application. For this purpose, filters and catalysts used are usually connected in series and require in this way, especially in large engines (> 560 KW), such as marine engines, a significant space requirement.
Aus der Offenlegungsschrift
Aus der Gebrauchsmusterschrift
Ausgehend von dem vorstehend genannten Stand der Technik liegt der vorliegenden Erfindung die Aufgabe zugrunde, eine Vorrichtung zur Reinigung des Abgases eines Verbrennungsmotors, insbesondere eines Diesel- und/oder Großmotors, anzugeben, welche nicht nur kompakt aufgebaut, sondern zudem flexibel einsetzbar ist.Based on the above-mentioned prior art, the present invention seeks to provide a device for cleaning the exhaust gas of an internal combustion engine, in particular a diesel and / or large engine, which is not only compact, but also flexible.
Offenbarung der ErfindungDisclosure of the invention
Die vorgeschlagene Vorrichtung zur Reinigung des Abgases eines Verbrennungsmotors, insbesondere eines Diesel- und/oder Großmotors, umfasst eine erste Reinigungsstufe A sowie eine zweite Reinigungsstufe B zur Reduzierung der im Abgas enthaltenen Rußpartikel und/oder Stickoxide. Ferner umfasst die Vorrichtung eine Mischkammer, in welcher dem Abgas ein Reduktionsmittel, insbesondere eine wässrige Harnstofflösung, zwischen der ersten und der zweiten Reinigungsstufe zuführbar ist. Erfindungsgemäß sind die erste und die zweite Reinigungsstufe baulich hintereinandergeschaltet. Ferner erfindungsgemäß ist die Mischkammer auf der Seite der ersten Reinigungsstufe A angeordnet, die der zweiten Reinigungsstufe B abgewandt ist. Die Mischkammer ist dabei über wenigstens ein eine Umlenkung des Abgasstroms bewirkendes Mischrohr mit der zweiten Reinigungsstufe B verbunden. Aufgrund der Umlenkung wird der Abgasstrom zweimal durch die Reinigungsstufe A geführt, wobei die Strömungsrichtung des Abgases durch das Mischrohr der eigentlichen Strömungsrichtung des Abgases durch die erste Reinigungsstufe A entgegengesetzt ist. Die Umlenkung des Abgasstromes bewirkt bei gleichbleibender Länge des Strömungsweges eine Verringerung des Bauraumbedarfs, so dass die Vorrichtung selbst bei mehreren hintereinandergeschalteten Reinigungsstufen kompakt gestaltet werden kann. Die Umlenkung des Abgasstromes bewirkt ferner Turbulenzen, welche zu einer Verbesserung der Harnstoffaufbereitung bzw. zu einer verbesserten Vermischung der Harnstofflösung mit dem Abgas führen. Das bauliche Hintereinanderschalten der ersten und zweiten Reinigungsstufe ermöglicht zudem eine modulare Bauweise, durch welche die Vorrichtung flexibel einsetzbar ist. Ein modularer Aufbau erleichtert darüber hinaus den Austausch einer Komponente einer Reinigungsstufe zu Reparatur- oder Reinigungszwecken.The proposed device for purifying the exhaust gas of an internal combustion engine, in particular a diesel and / or large engine, comprises a first purification stage A and a second purification stage B for reducing the soot particles and / or nitrogen oxides contained in the exhaust gas. Furthermore, the device comprises a mixing chamber in which the exhaust gas, a reducing agent, in particular an aqueous urea solution, between the first and the second cleaning stage can be supplied. According to the first and the second cleaning stage are structurally connected in series. Furthermore, according to the invention, the mixing chamber is arranged on the side of the first cleaning stage A, which faces away from the second cleaning stage B. The mixing chamber is connected to the second purification stage B via at least one mixing tube effecting a diversion of the exhaust gas flow. Due to the deflection of the exhaust gas flow is twice passed through the purification stage A, wherein the flow direction of the exhaust gas through the mixing tube of the actual flow direction of the exhaust gas through the first cleaning stage A is opposite. The deflection of the exhaust gas flow causes a reduction in the space requirement for a constant length of the flow path, so that the device even with several successive cleaning stages compact can be designed. The deflection of the exhaust gas flow also causes turbulences, which lead to an improvement of the urea treatment or to an improved mixing of the urea solution with the exhaust gas. The structural series connection of the first and second cleaning stage also allows a modular design, through which the device can be used flexibly. A modular design also facilitates the replacement of a component of a cleaning stage for repair or cleaning purposes.
Bevorzugt umfassen die erste Reinigungsstufe A und die zweite Reinigungsstufe B wenigstens einen Partikelfilter und/oder einen SCR-Katalysator. Weiterhin bevorzugt weist die erste Reinigungsstufe A einen Partikelfilter und die zweite Reinigungsstufe B einen SCR-Katalysator als Komponente auf. Auf diese Weise kann eine besonders effektive Reinigung des Abgases bewirkt werden, da in der ersten Stufe im Abgas enthaltene Rußpartikel und in der zweiten Stufe im Abgas enthaltene Stickoxide reduziert werden. Ferner können wenigstens zwei Partikelfilter oder wenigstens zwei SCR-Katalysatoren als erste und zweite Reinigungsstufe hintereinander geschaltet werden. Der modulare Aufbau der Vorrichtung ermöglicht eine Vielzahl an Kombinationsmöglichkeiten.Preferably, the first purification stage A and the second purification stage B comprise at least one particulate filter and / or one SCR catalyst. Furthermore preferably, the first purification stage A has a particle filter and the second purification stage B an SCR catalyst as a component. In this way, a particularly effective cleaning of the exhaust gas can be effected, since in the first stage soot particles contained in the exhaust gas and nitrogen oxides contained in the exhaust gas in the second stage are reduced. Furthermore, at least two particle filters or at least two SCR catalysts can be connected in series as first and second purification stage. The modular design of the device allows a variety of combination options.
Gemäß einer bevorzugten Ausführungsform der Erfindung mündet das wenigstens eine Mischrohr in eine Mischkammer der zweiten Reinigungsstufe B, welche vorzugsweise auf der Seite der zweiten Reinigungsstufe B angeordnet ist, die der ersten Reinigungsstufe (A) abgewandt ist. Somit sind beide Mischkammern bevorzugt an entgegengesetzten Enden der Vorrichtung angeordnet und das wenigstens eine Mischrohr erstreckt sich von der Mischkammer der ersten Reinigungsstufe A bis zur Mischkammer der zweiten Reinigungsstufe B. Durch diese Anordnung wird der Strömungsweg des Abgases verlängert ohne jedoch gleichzeitig den Bauraumbedarf der Vorrichtung in axialer Richtung zu erhöhen.According to a preferred embodiment of the invention, the at least one mixing tube opens into a mixing chamber of the second cleaning stage B, which is preferably arranged on the side of the second cleaning stage B, which faces away from the first cleaning stage (A). Thus, both mixing chambers are preferably arranged at opposite ends of the device and the at least one mixing tube extends from the mixing chamber of the first cleaning stage A to the mixing chamber of the second cleaning stage B. By this arrangement, the flow path of the exhaust gas is extended without, however, the space requirement of the device in axial direction increase.
Das wenigstens eine Mischrohr ist hierzu weiterhin bevorzugt zumindest teilweise durch die erste Reinigungsstufe (A), vorzugsweise den Partikelfilter, und/oder die zweite Reinigungsstufe (B), vorzugsweise den SCR-Katalysator, hindurch geführt. Vorteilhafterweise ist bzw. sind der Partikelfilter und/oder der SCR-Katalysator mehrteilig ausgebildet und das wenigstens eine Mischrohr ist zwischen zwei Teilen des Partikelfilters und/oder des SCR-Katalysators geführt. Das wenigstens eine Mischrohr kann aber auch in den Partikelfilter und/oder den SCR-Katalysator integriert sein.For this purpose, the at least one mixing tube is furthermore preferably passed through at least part of the first purification stage (A), preferably the particle filter, and / or the second purification stage (B), preferably the SCR catalyst. Advantageously, the particle filter and / or the SCR catalytic converter is or are formed in several parts and the at least one mixing tube is guided between two parts of the particle filter and / or the SCR catalytic converter. However, the at least one mixing tube can also be integrated into the particle filter and / or the SCR catalyst.
Weiterhin wird vorgeschlagen, dass das wenigstens eine Mischrohr mehrteilig ausgeführt ist, wobei ein erster Teil der ersten Reinigungsstufe A und ein zweiter Teil der zweiten Reinigungsstufe B zugeordnet ist. Eine entsprechende Zuordnung der Teile des wenigstens einen Mischrohres ist für einen modularen Aufbau der Vorrichtung von Vorteil.Furthermore, it is proposed that the at least one mixing tube is designed in several parts, wherein a first part of the first cleaning stage A and a second part of the second cleaning stage B is assigned. A corresponding assignment of the parts of the at least one mixing tube is advantageous for a modular construction of the device.
Darüber hinaus bevorzugt besitzt die zweite Reinigungsstufe B Mittel zur Umlenkung des Abgases. Daraus folgt, dass die Strömungsrichtung des Abgases durch die zweite Reinigungsstufe B, vorzugsweise den SCR-Katalysator, der Strömungsrichtung des Abgases durch die erste Reinigungsstufe A, vorzugsweise den Partikelfilter, entspricht. Die Mittel zur Umlenkung des Abgasstromes können die Mischkammer, in welche das wenigstens eine Mischrohr mündet, sowie etwaige hierin angeordnete Leitbleche und/oder Leitstrukturen umfassen. Aufgrund der Umlenkung wird der Abgasstrom zweimal durch die Reinigungsstufe B geführt, wobei die Strömungsrichtung des Abgases durch das Mischrohr der eigentlichen Strömungsrichtung des Abgases durch die zweite Reinigungsstufe B entgegengesetzt ist.In addition, preferably, the second purification stage B has means for deflecting the exhaust gas. It follows that the direction of flow of the exhaust gas through the second purification stage B, preferably the SCR catalyst, corresponds to the flow direction of the exhaust gas through the first purification stage A, preferably the particle filter. The means for deflecting the exhaust gas flow may comprise the mixing chamber, into which the at least one mixing tube opens, and any guide plates and / or guide structures arranged therein. Due to the deflection of the exhaust gas flow is twice passed through the purification stage B, wherein the flow direction of the exhaust gas through the mixing tube of the actual flow direction of the exhaust gas through the second purification stage B is opposite.
Vorzugsweise besitzt die erste Reinigungsstufe A wenigstens einen Einlass und/oder die zweite Reinigungsstufe B wenigstens einen Auslass, welche eine Verbindung der Vorrichtung mit dem Verbrennungsmotor und/oder einem Abgasstrang ermöglichen. Über den wenigstens einen Einlass wird der Vorrichtung Rußpartikel und Stickoxide enthaltendes Abgas zugeführt und über den wenigstens einen Auslass gereinigtes Abgas abgeführt, das aufgrund der Reinigung deutlich weniger Rußpartikel und/oder Stickoxide enthält. Weiterhin vorzugsweise ist bzw. sind der Einlass und/oder der Auslass quer zur Strömungsrichtung des Abgases durch die erste Reinigungsstufe A und/oder die zweite Reinigungsstufe B ausgerichtet. Das heißt, dass bevorzugt der Einlass und/oder der Auslass an einer Längsseite der Vorrichtung angeordnet ist bzw. sind. Vorteilhafterweise erfolgt die Anordnung des Einlasses und des Auslasses an derselben Längsseite. Einlass und Auslass können demnach dicht beieinander liegen. Der wenigstens eine Einlass und/oder Auslass weist bzw. weisen bevorzugt die Form eines Rohres oder Stutzens auf.Preferably, the first cleaning stage A has at least one inlet and / or the second cleaning stage B at least one outlet, which allow a connection of the device to the internal combustion engine and / or an exhaust line. Via the at least one inlet, exhaust gas containing soot particles and nitrogen oxides is supplied to the device and exhaust gas purified via the at least one outlet is removed, which due to the purification contains significantly less soot particles and / or nitrogen oxides. Further preferably, the inlet and / or the outlet is aligned transversely to the flow direction of the exhaust gas through the first cleaning stage A and / or the second cleaning stage B. This means that preferably the inlet and / or the outlet is or are arranged on a longitudinal side of the device. Advantageously, the arrangement of the inlet and the outlet takes place on the same longitudinal side. The inlet and outlet can therefore be close together. The at least one inlet and / or outlet preferably has the shape of a pipe or nozzle.
Vorteilhafterweise mündet der Einlass in eine Einlasskammer und/oder der Auslass in eine Auslasskammer, wobei vorzugsweise die Einlasskammer Bestandteil der ersten Reinigungsstufe A und/oder die Auslasskammer Bestandteil der zweiten Reinigungsstufe B ist. Jede Reinigungsstufe weist demnach bevorzugt wenigstens eine außen liegende Mischkammer sowie eine innen liegende Einlass- bzw. Auslasskammer auf, wenn die beiden Reinigungsstufen hintereinander geschaltet sind. Dadurch können Einlass und Auslass der Vorrichtung noch dichter beieinander gelegt werden. Zudem können Einlass- und Auslasskammer der Kopplung der beiden Reinigungsstufen dienen. Dies wiederum ist für eine modulare Bauweise von Vorteil.Advantageously, the inlet opens into an inlet chamber and / or the outlet into an outlet chamber, wherein preferably the inlet chamber is part of the first cleaning stage A and / or the outlet chamber is part of the second cleaning stage B. Each cleaning stage therefore preferably has at least one outer mixing chamber and an inner inlet or outlet chamber when the two purification stages are connected in series. This allows the inlet and outlet of the device yet be placed closer together. In addition, inlet and outlet chamber of the coupling of the two purification stages can serve. This in turn is advantageous for a modular design.
Um einen modularen Aufbau der Vorrichtung zu ermöglichen, wird ferner vorgeschlagen, dass die beiden Reinigungsstufen lösbar verbunden sind. Der modulare Aufbau ermöglicht in einfacher Weise die Ergänzung und/oder den Austausch einer Komponente der Vorrichtung. Die Vorrichtung kann daher auch zu Nachrüstungszwecken eingesetzt werden.In order to enable a modular construction of the device, it is further proposed that the two cleaning stages are detachably connected. The modular design makes it easy to supplement and / or replace a component of the device. The device can therefore also be used for retrofitting purposes.
Eine Komponente für eine Reinigungsstufe einer erfindungsgemäßen Vorrichtung, beispielsweise ein Partikelfilter oder ein SCR-Katalysator, ist bevorzugt mehrteilig ausgeführt. Die mehrteilige Ausführung erlaubt die Anordnung wenigstens eines Mischrohres zwischen den Teilen der Komponente. Da sich das wenigstens eine Mischrohr bevorzugt in Längsrichtung erstreckt, erfolgt die Teilung der Komponente bevorzugt ebenfalls in Längsrichtung. Beispielsweise kann die Teilung im Querschnitt kreuzweise verlaufen, so dass vier, vorzugsweise gleich große Teile ausgebildet werden. Bei mehreren Mischrohren können diese neben- und/oder untereinander jeweils zwischen zwei Teilen angeordnet werden.A component for a purification stage of a device according to the invention, for example a particle filter or an SCR catalyst, is preferably designed in several parts. The multi-part design allows the arrangement of at least one mixing tube between the parts of the component. Since the at least one mixing tube preferably extends in the longitudinal direction, the division of the component preferably also takes place in the longitudinal direction. For example, the pitch can cross in cross section, so that four, preferably equal parts are formed. In the case of several mixing tubes, these can be arranged next to and / or below each other between two parts.
Des Weiteren bevorzugt weist eine Komponente für eine Reinigungsstufe bevorzugt an einem ersten Ende eine Mischkammer und an einem zweiten Ende eine Einlass- bzw. Auslasskammer auf, über welche die Komponente mit einer weiteren Komponente zur Ausbildung einer erfindungsgemäßen Reinigungsvorrichtung koppelbar ist. Die an den Enden einer Komponente angeordneten Kammern ermöglichen zudem eine gleichmäßige Verteilung des Abgasstroms auf die mehreren Teile der Komponente, sofern diese mehrteilig ausgeführt ist.Furthermore, a component for a purification stage preferably has a mixing chamber at a first end and an inlet or outlet chamber at a second end, via which the component can be coupled to a further component for forming a cleaning device according to the invention. The arranged at the ends of a component chambers also allow a uniform distribution of the exhaust gas flow to the multiple parts of the component, if this is made of several parts.
Als Vorteile der Erfindung sind insbesondere die kompakte Bauweise der Vorrichtung und der damit einhergehende geringe Bauraumbedarf zu nennen. Ferner ist die Vorrichtung sowohl mit einer passiven als auch einer aktiven Partikelfilterregeneration kombinierbar, so dass der Abgasgegendruck gering gehalten werden kann, vorzugsweise unter 100 mbar, wodurch wiederum Leistungsverluste verhindert werden. Bei einem modularen Aufbau der Vorrichtung, sind einzelne Komponenten ergänzbar und/oder nachrüstbar, so dass der Bau von unterschiedlich großen Anlagen möglich ist. Der modulare Aufbau erleichtert darüber hinaus den Austausch einer Komponente zu Reparatur- und/oder Reinigungszwecken.As advantages of the invention, in particular the compact design of the device and the associated low space requirement are mentioned. Furthermore, the device can be combined with both a passive and an active particulate filter regeneration, so that the exhaust backpressure can be kept low, preferably below 100 mbar, which in turn prevents power losses. In a modular design of the device, individual components can be supplemented and / or retrofitted, so that the construction of different sized systems is possible. The modular design also facilitates the replacement of a component for repair and / or cleaning purposes.
Das mehrfache Umlenken des Abgasstroms beim Durchströmen der Vorrichtung führt nicht nur zu einer kompakten Bauweise der Vorrichtung, sondern bewirkt zugleich die Bildung von Turbulenzen innerhalb des Abgasstroms, welche eine gute Durchmischung der zudosierten Harnstofflösung mit dem Abgas gewährleistet. Ein separater Mischer ist demzufolge entbehrlich.The multiple deflection of the exhaust stream when flowing through the device not only leads to a compact design of the device, but also causes the formation of turbulence within the exhaust stream, which ensures a good mixing of the metered urea solution with the exhaust gas. A separate mixer is therefore unnecessary.
Eine bevorzugte Ausführungsform der Erfindung ist in den
Ausführliche Beschreibung der ZeichnungenDetailed description of the drawings
Die in der
Von der Einlasskammer
Wie den
Durch die beidseitige Einfassung des Partikelfilters
Die modulare Bauweise geht insbesondere aus den
Die
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 10226975 A1 [0003] DE 10226975 A1 [0003]
- DE 202006011281 U1 [0004] DE 202006011281 U1 [0004]
Claims (10)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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DE201210205350 DE102012205350A1 (en) | 2012-04-02 | 2012-04-02 | Device for cleaning the exhaust gas of an internal combustion engine |
PCT/EP2013/052745 WO2013149748A1 (en) | 2012-04-02 | 2013-02-12 | Device for purifying the exhaust gas of an internal combustion engine |
Applications Claiming Priority (1)
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DE201210205350 DE102012205350A1 (en) | 2012-04-02 | 2012-04-02 | Device for cleaning the exhaust gas of an internal combustion engine |
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DE102012205350A1 true DE102012205350A1 (en) | 2013-10-02 |
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DE201210205350 Withdrawn DE102012205350A1 (en) | 2012-04-02 | 2012-04-02 | Device for cleaning the exhaust gas of an internal combustion engine |
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WO (1) | WO2013149748A1 (en) |
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US20140234188A1 (en) * | 2011-09-29 | 2014-08-21 | Jaguar Land Rover Limited | Apparatus and method for filtering engine exhaust gases |
DE102014108606B3 (en) * | 2014-06-18 | 2015-09-03 | Tenneco Gmbh | Exhaust module for an internal combustion engine |
WO2015193241A1 (en) * | 2014-06-18 | 2015-12-23 | Tenneco Gmbh | Exhaust-gas module for an internal combustion engine |
EP2863028A4 (en) * | 2012-07-05 | 2016-06-29 | Komatsu Mfg Co Ltd | Engine unit and working vehicle |
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DE10226975A1 (en) | 2002-06-17 | 2004-01-15 | Siemens Ag | Exhaust gas purification arrangement, for diesel engine exhaust gases, has a particulates removal filter which also functions as a urea hydrolysis catalyst to provide ammonia to a downstream selective reduction catalyst |
DE202006011281U1 (en) | 2006-07-21 | 2006-09-28 | Hjs Fahrzeugtechnik Gmbh & Co. Kg | Exhaust gas purifying unit for vehicle internal combustion (IC) engine e.g. diesel engine, has concentric outer and inner emission control stages, respectively provided with particle filter and SCR catalyst |
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DE102005002289B4 (en) * | 2005-01-17 | 2007-04-19 | J. Eberspächer GmbH & Co. KG | Exhaust gas treatment system |
NL2002986C2 (en) * | 2009-06-09 | 2010-12-13 | Daf Trucks Nv | DEVICE FOR AFTER TREATMENT OF EXHAUST GAS FROM A DIESEL BURNING ENGINE. |
-
2012
- 2012-04-02 DE DE201210205350 patent/DE102012205350A1/en not_active Withdrawn
-
2013
- 2013-02-12 WO PCT/EP2013/052745 patent/WO2013149748A1/en active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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DE10226975A1 (en) | 2002-06-17 | 2004-01-15 | Siemens Ag | Exhaust gas purification arrangement, for diesel engine exhaust gases, has a particulates removal filter which also functions as a urea hydrolysis catalyst to provide ammonia to a downstream selective reduction catalyst |
DE202006011281U1 (en) | 2006-07-21 | 2006-09-28 | Hjs Fahrzeugtechnik Gmbh & Co. Kg | Exhaust gas purifying unit for vehicle internal combustion (IC) engine e.g. diesel engine, has concentric outer and inner emission control stages, respectively provided with particle filter and SCR catalyst |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140234188A1 (en) * | 2011-09-29 | 2014-08-21 | Jaguar Land Rover Limited | Apparatus and method for filtering engine exhaust gases |
US8986636B2 (en) * | 2011-09-29 | 2015-03-24 | Jaguar Land Rover Limited | Apparatus and method for filtering engine exhaust gases |
EP2863028A4 (en) * | 2012-07-05 | 2016-06-29 | Komatsu Mfg Co Ltd | Engine unit and working vehicle |
US9476337B2 (en) | 2012-07-05 | 2016-10-25 | Komatsu Ltd. | Engine unit and work vehicle |
DE102014108606B3 (en) * | 2014-06-18 | 2015-09-03 | Tenneco Gmbh | Exhaust module for an internal combustion engine |
WO2015193241A1 (en) * | 2014-06-18 | 2015-12-23 | Tenneco Gmbh | Exhaust-gas module for an internal combustion engine |
US10316726B2 (en) | 2014-06-18 | 2019-06-11 | Tenneco Gmbh | Exhaust-gas module for an internal combustion engine |
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