DE19855093A1 - Exhaust gas purifier with sequential treatment units includes series of bypasses taking side streams past treatments, preventing complete system blockage and mitigating against high pressure differential - Google Patents
Exhaust gas purifier with sequential treatment units includes series of bypasses taking side streams past treatments, preventing complete system blockage and mitigating against high pressure differentialInfo
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- DE19855093A1 DE19855093A1 DE19855093A DE19855093A DE19855093A1 DE 19855093 A1 DE19855093 A1 DE 19855093A1 DE 19855093 A DE19855093 A DE 19855093A DE 19855093 A DE19855093 A DE 19855093A DE 19855093 A1 DE19855093 A1 DE 19855093A1
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- Prior art keywords
- exhaust gas
- gas cleaning
- partial
- bypass
- elements
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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
- F01N3/24—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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- 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
- F01N13/011—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 purifying devices arranged in parallel
- F01N13/017—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 purifying devices arranged in parallel 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
- 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
- F01N3/031—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 having means for by-passing filters, e.g. when clogged or during cold engine start
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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
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
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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
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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
- F01N2490/00—Structure, disposition or shape of gas-chambers
- F01N2490/16—Chambers with particular shapes, e.g. spherical
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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
- F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
- F01N2570/04—Sulfur or sulfur oxides
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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
- F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
- F01N2570/12—Hydrocarbons
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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
- F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
- F01N2570/14—Nitrogen oxides
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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
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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
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zur Reinigung des Abgases einer Brennkraftmaschine, und betrifft insbesondere eine aus mehreren Abgasreinigungselementen zusammengesetzte Abgasreinigungsvorrichtung.The invention relates to a device for cleaning the exhaust gas Internal combustion engine, and particularly relates to one of several Exhaust gas cleaning elements composite exhaust gas purification device.
Bekannt sind Abgasreinigungsvorrichtungen für Brennkraftmaschinen, insbesondere Benzin- oder Dieseleinspritzmotoren, die eine Hintereinanderschaltung von verschiedenen Abgasreinigungselementen besitzen. Dies kann beispielsweise bei einem NOx-Speicherkatalysator der Fall sein, dem eine Schwefelfalle oder ein Vorkatalysator vorgeschaltet ist. Ferner kann es aus konstruktiven Gründen notwendig sein, beispielsweise, um eine ausreichende Abgasreinigung oder Partikelfiltrierung zu erreichen, zwei Partikelfilter hintereinander an verschiedenen Orten entfernt voneinander anzuordnen, die durch einen Abgaskanal miteinander verbunden sind. Dabei tritt der zu reinigende Abgasstrom zuerst in den ersten Partikelfilter ein, durchläuft diesen und tritt dann in den zweiten Partikelfilter nach Durchlauf des verbindenden Abgaskanals ein.Exhaust gas cleaning devices for internal combustion engines are known, in particular Gasoline or diesel injection engines that are connected in series have different exhaust gas cleaning elements. This can be the case with a NOx storage catalyst, the case of a sulfur trap or a pre-catalyst is connected upstream. Furthermore, it may be necessary for constructional reasons for example, to ensure adequate exhaust gas purification or particle filtration reach two particle filters in a row at different locations apart to be arranged, which are connected by an exhaust duct. This occurs The cleaning exhaust gas stream first enters the first particle filter, passes through it and enters then into the second particle filter after passing through the connecting exhaust duct.
Nachteilig dabei ist, daß dabei der volle Abgasdruck auf die Stirnfläche des vorderen Abgasreinigungselements trifft, wodurch ein großer Gegendruck aufgebaut werden kann, so daß eine Blockade des Abgasstroms bewirkt werden kann.The disadvantage here is that the full exhaust pressure on the front surface of the front Exhaust gas cleaning element hits, which builds up a large back pressure can, so that a blockage of the exhaust gas flow can be effected.
Der Erfindung liegt daher die Aufgabe zugrunde, eine Abgasreinigungsanlage zu schaffen, bei der der Gegendruck positiv beeinflußt und eine Blockade vermieden wird.The invention is therefore based on the object of an exhaust gas cleaning system create, in which the back pressure is positively influenced and a blockage is avoided.
Die Aufgabe wird durch die Merkmale des Anspruchs 1 gelöst. Bevorzugte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.The object is solved by the features of claim 1. Preferred Embodiments of the invention are the subject of the dependent claims.
Die vorliegende Erfindung betrifft eine Vorrichtung zur Reinigung des Abgases einer Brennkraftmaschine mit n ≧ 2 Abgasreinigungselementen, wobei die Abgasreinigungselemente in der Vorrichtung hintereinander angeordnet sind und der Abgasstrom in n Abgasteilströme aufgeteilt wird, derart daß jeder Teilstrom separat dem entsprechenden Abgasreinigungselement zugeführt und der gereinigte Abgasgesamtstrom durch Zusammenführen der einzeln gereinigten Abgasteilströme jedes Abgasreinigungselements gebildet wird.The present invention relates to a device for cleaning the exhaust gas Internal combustion engine with n ≧ 2 exhaust gas purification elements, the Emission control elements are arranged one behind the other in the device and the Exhaust gas stream is divided into n partial exhaust gas streams, so that each partial stream is separate Appropriate exhaust gas cleaning element supplied and the cleaned Total exhaust gas flow by merging the individually cleaned partial exhaust gas flows each emission control element is formed.
Die Zuführung der Abgasteilströme zu den einzelnen Abgasreinigungselemente und die Weiterleitung der gereinigten Abgasteilströme erfolgt durch entsprechend angeordnete Bypass-Kanäle.The supply of the partial exhaust gas flows to the individual exhaust gas cleaning elements and The cleaned partial exhaust gas flows are forwarded by appropriately arranged Bypass channels.
Vorzugsweise weist das erste bis n-1-te Reinigungselement in axialer Richtung jeweils einen Bypasskanal auf, der zum Durchleiten des nicht für das jeweilige Abgasreinigungselement bestimmten Teilgasstroms dient, und die die entsprechenden Abgasreinigungselemente verlassenden gereinigten Teilgasströme um die dahinter angeordneten Abgasreinigungselemente durch entsprechende Bypass-Vorrichtungen herumgeführt werden, so daß der gereinigte Gesamtabgasstrom hinter dem letzten Abgasreinigungselement gebildet wird.Preferably, the first to n-1th cleaning element each point in the axial direction a bypass channel, which is used to route the not for the respective Exhaust gas cleaning element is used for certain partial gas flow, and the corresponding Exhaust gas cleaning elements leaving cleaned partial gas flows around the behind arranged exhaust gas cleaning elements by appropriate bypass devices be led around so that the cleaned total exhaust gas stream behind the last Emission control element is formed.
Weiterhin wird in der erfindungsgemäßen Vorrichtung der Lochdurchmesser des Bypasses durch ein Reinigungselement so gewählt, daß er die Summe der Abgasteilströme der nachfolgenden Abgasreinigungselemente aufnehmen kann, mit anderen Worten, daß das betroffenen Reinigungselement einen Teilgasstrom in der Größe des n-ten Teils des Gesamtabgasstrom aufnimmt und reinigt. Andere Verteilungen der Abgasteilströme auf die Reinigungselemente sind möglich und richten sich nach den konstruktiven Notwendigkeiten.Furthermore, the hole diameter of the Bypasses selected by a cleaning element so that it is the sum of Exhaust gas streams of the subsequent exhaust gas cleaning elements can take up with in other words, that the cleaning element concerned has a partial gas flow in the Size of the nth part of the total exhaust gas flow takes up and cleans. Other Distributions of the partial exhaust gas flows to the cleaning elements are possible and directed according to the constructive needs.
Vorzugsweise wird die Vorrichtung durch die Hintereinanderschaltung von zwei Abgasreinigungselementen gebildet wird, wobei das erste Abgasreinigungselement einen zentralen axialen Bypasskanal aufweist, der den halben Gasstrom des ankommenden ungereinigten Abgases aufnimmt, so daß die Stirnfläche des ersten Abgasreinigungselementes von der anderen Hälfte des ungereinigten Gasstromes angeströmt wird, hinter dem ersten Abgasreinigungselement ein Trennelement, angeordnet ist, das den gereinigten Teilstrom am zweiten Abgasreinigungselement vorbeiführt, so daß der gereinigte Teilstrom des ersten Reinigungselements von dem für das zweite Reinigungselement bestimmten ungereinigten Teilstrom separiert ist, während der ungereinigte Teilstrom des Bypasskanals von dem Trennelement auf die Stirnfläche des zweiten Abgasreinigungsselements geleitet wird. Das Trennelement wird vorzugsweise durch einen Trichter gebildet, der hinter dem ersten Reinigungselement angeordnet ist.The device is preferably connected in series by two Exhaust gas cleaning elements is formed, wherein the first exhaust gas cleaning element has a central axial bypass channel which is half the gas flow of the incoming incoming uncleaned exhaust gas, so that the end face of the first Exhaust gas cleaning element from the other half of the unpurified gas stream is flowed, behind the first exhaust gas cleaning element, a separating element, is arranged, the cleaned partial flow on the second exhaust gas cleaning element passes, so that the cleaned partial flow of the first cleaning element from the for the second cleaning element is separated from certain unpurified partial stream, during the unpurified partial flow of the bypass channel from the separating element to the End face of the second exhaust gas cleaning element is passed. The separator will preferably formed by a funnel behind the first cleaning element is arranged.
Weiterhin kann die Vorrichtung durch zwei hintereinander angeordnete Abgasreinigungselemente ausgebildet sein, wobei eine Wand die Austrittsstirnfläche des ersten Abgasreinigungselements mit der Eintrittsstirnfläche des zweiten Abgasreinigungselements derart verbindet, daß der aus dem ersten Abgasreinigungselement austretende gereinigte Abgasteilstrom nicht in die Eintrittsstirnfläche des zweiten Abgasreinigungselements gelangen kann.Furthermore, the device can be arranged in series Exhaust gas cleaning elements can be formed, wherein a wall the outlet end face of the first exhaust gas cleaning element with the inlet end face of the second Exhaust gas purification element connects such that the first Exhaust gas cleaning element exiting cleaned exhaust gas partial flow into the Entry end face of the second exhaust gas cleaning element can reach.
Ferner kann die erfindungsgemäße Vorrichtung dadurch durch zwei hintereinander angeordnete Abgasreinigungselemente realisiert werden, die in einem Gehäuse seitlich bündig angeordnet sind, wobei ein erster Bypass den entsprechenden ungereinigten Abgasteilstrom dem zweiten Abgasreinigungselement zuführt, während ein zweiter Bypass den gereinigten Teilstrom des ersten Abgasreinigungselements um das zweite Abgasreinigungselement herumführt und die beiden Abgasreinigungselemente mittels einer Wand voneinander getrennt sind.Furthermore, the device according to the invention can thereby be carried out in two arranged exhaust gas purification elements can be realized in the side of a housing are arranged flush, with a first bypass the corresponding uncleaned Exhaust gas partial flow supplies the second exhaust gas purification element, while a second Bypass the cleaned partial flow of the first exhaust gas cleaning element around the second Exhaust gas cleaning element leads around and the two exhaust gas cleaning elements by means a wall are separated from each other.
Vorzugsweise werden die Abgasreinigungselemente von einem Partikelfilter, einem NOx-Speicher, einer Schwefelfalle oder einem NOx-Katalysator gebildet.The exhaust gas purification elements are preferably formed by a particle filter, an NO x accumulator, a sulfur trap or a NO x catalyst.
Vorteilhafterweise werden durch eine derartige serielle Anordnung der Abgasreinigungselemente, insbesondere von Partikelfiltern im Falle eines Dieselmotors, ein kleinerer Durchmesser der Abgasreinigungsanlage erzielt, die Gasgeschwindigkeit innerhalb der Abgasreinigungsanlage wird niedriger und es werden niedrigere Drücke erreicht. Ferner baut sich an der Stirnfläche des Abgasreinigungselementes kein hoher Gegendruck auf und Blockaden des Abgasreinigungssystems werden vermieden.Advantageously, such a serial arrangement of the Exhaust gas cleaning elements, in particular of particle filters in the case of a diesel engine, a smaller diameter of the exhaust gas purification system achieves the gas velocity inside the exhaust gas purification system becomes lower and there are lower pressures reached. Furthermore, no high build on the end face of the exhaust gas cleaning element Back pressure and blockages of the exhaust gas cleaning system are avoided.
Bevorzugte Ausführungsformen der Erfindung werden nachfolgend anhand der Zeichnungen näher erläutert.Preferred embodiments of the invention are described below with reference to the Drawings explained in more detail.
Fig. 1 zeigt eine perspektivische Querschnittsansicht durch eine erfindungsgemäße erste Ausführungsform einer Abgasreinigungsvorrichtung; Fig. 1 shows a perspective cross-sectional view through a first embodiment of the present invention an emission control device;
Fig. 2 zeigt einen Querschnitt durch eine zweite Ausführungsform der erfindungsgemäßen Abgasreinigungsvorrichtung; und Fig. 2 shows a cross section through a second embodiment of the exhaust gas purification device according to the invention; and
Fig. 3 zeigt einen Querschnitt durch eine dritte Ausführungsform einer erfindungsgemäßen Abgasreinigungsvorrichtung. Fig. 3 shows a cross section through a third embodiment of an exhaust gas purification device according to the invention.
Fig. 1 zeigt eine perspektivische Querschnittsansicht einer ersten Ausführungsform der erfindungsgemäßen Reinigungsvorrichtung, wobei es sich hier vorzugsweise um die Verknüpfung von Partikelfilterelementen handelt. Die Abgasreinigungsvorrichtung 1 weist einen ersten Partikelfilter 2 und einen zweiten Partikelfilter 3 auf, die in dem Gehäuse 4 der Abgasreinigungsvorrichtung 1 hintereinander angeordnet sind. Ein ungereinigter Abgasstrom 5 tritt eingangsseitig in die Abgasreinigungsvorrichtung 1 ein. Ein Teil des Abgasstroms tritt in die Stirnfläche 6 des ersten Partikelfilters ein, während der andere Teil des auf die Stirnfläche auftreffenden Abgasstroms 5 in einen Bypasskanal 10 eintritt, der in axialer Richtung und somit in Strömungsrichtung den ersten Partikelfilter durchzieht. In diesem besonderen Falle ist der Lochdurchmesser des Bypasskanals 10 so gewählt, daß die Hälfte des eintreffenden ungereinigten Abgasstroms 5 den ersten Partikelfilter 2 durchtritt. Es wird daher der ungereinigte Abgasstrom 5 in einen ersten Teilstrom 8 und einen zweiten Teilstrom 9 aufgeteilt. Hinter dem ersten Partikelfilter 2 ist ein als Trichter ausgebildetes Trennelement 7 so angeordnet, daß der gereinigte erste Teilstrom 8 an der Außenwand des Trichters 7 vorbeigeführt wird, während der ungereinigte zweite Teilstrom 9, der durch den Bypasskanal 10 hindurchgetreten ist, auf die Stirnfläche 11 des zweiten Partikelfilters geleitet wird und durch diesen hindurchtritt. Das Gehäuse 4 der Abgasreinigungsvorrichtung 1 ist dabei so ausgelegt, daß ein Bypasskanal 12 den gereinigten ersten Teilstrom 8 um das zweite Partikelfilter 3 herumleitet, mit anderen Worten, der um den zweiten Partikelfilter 3 herumführende Bypass 12 wird durch die seitliche Oberfläche des zweiten Partikelfilters 3 und das Gehäuse 4 gebildet. Hinter dem zweiten Partikelfilter 3 werden die nunmehr gereinigten ersten und zweiten Teilströme 8, 9 wieder zusammengeführt und werden aus der Abgasreinigungsvorrichtung 1 ausgegeben. Fig. 1 is a perspective cross-sectional view showing a first embodiment of the cleaning device according to the invention, which is preferably is the combination of particulate filter elements here. The exhaust gas cleaning device 1 has a first particle filter 2 and a second particle filter 3 , which are arranged one behind the other in the housing 4 of the exhaust gas cleaning device 1 . An unpurified exhaust gas stream 5 enters the exhaust gas purification device 1 on the input side. A part of the exhaust gas flow enters the end face 6 of the first particle filter, while the other part of the exhaust gas stream 5 striking the end face enters a bypass duct 10 which passes through the first particle filter in the axial direction and thus in the flow direction. In this particular case, the hole diameter of the bypass channel 10 is selected so that half of the incoming, uncleaned exhaust gas stream 5 passes through the first particle filter 2 . The unpurified exhaust gas stream 5 is therefore divided into a first partial stream 8 and a second partial stream 9 . Behind the first particulate filter 2 embodied as a hopper separation element 7 is arranged so that the purified first partial flow is conducted past 8 on the outer wall of the hopper 7, during the unpurified second partial stream 9 which is passed through the bypass channel 10, to the end face 11 of the second particle filter is passed and passes through it. The housing 4 of the exhaust gas purification device 1 is designed such that a bypass channel 12 directs the cleaned first partial stream 8 around the second particle filter 3 , in other words, the bypass 12 leading around the second particle filter 3 is through the side surface of the second particle filter 3 and the housing 4 is formed. After the second particle filter 3 , the now cleaned first and second partial flows 8 , 9 are brought together again and are output from the exhaust gas purification device 1 .
Fig. 2 zeigt eine zweite Ausführungsform einer erfindungsgemäßen Abgasreinigungsvorrichtung 1. Auch hier sind ein erster Partikelfilter 2 und ein zweiter Partikelfilter 3 in dem Gehäuse 4 der Abgasreinigungsvorrichtung 1 hintereinander versetzt angeordnet, so daß zwischen dem Gehäuse 4 und einer Seitenwand des ersten Partikelfilters ein äußere Bypasskanal 20 gebildet wird. Dadurch wird ebenfalls eine Aufspaltung des eintretenden Abgasstroms 5 in einen ersten Teilstrom 8 und einen zweiten Teilstrom 9 erreicht. Durch ein als Wand ausgebildetes Trennelement 21, das die Ausgangsseite des ersten Partikelfilters mit der Eintrittsseite des zweiten Partikelfilters 3 so verbindet, daß der aus dem ersten Partikelfilter 2 austretende gereinigte Abgasteilstrom 8 nicht in die Stirnfläche 11 des zweiten Partikelfilters 3 eintreten kann. Durch die Wand 21 und das Gehäuse 4 wird ein weiterer Bypass geschaffen, der den gereinigten ersten Teilstrom 8 um den zweiten Partikelfilter 3 herumleitet, so daß sich die beiden gereinigten Abgasteilströme 8, 9 hinter dem zweiten Partikelfilter 3 zu einem gereinigten Abgasgesamtstrom wieder vereinigen. Fig. 2 shows a second embodiment of an exhaust gas purification device 1 according to the invention. Here, too, a first particle filter 2 and a second particle filter 3 in the housing 4 of the exhaust gas purification device 1 are staggered one behind the other, so that an outer bypass channel 20 is formed between the housing 4 and a side wall of the first particle filter. This also splits the incoming exhaust gas stream 5 into a first partial stream 8 and a second partial stream 9 . Through a separating element 21 designed as a wall, which connects the output side of the first particle filter to the inlet side of the second particle filter 3 in such a way that the cleaned partial exhaust gas stream 8 emerging from the first particle filter 2 cannot enter the end face 11 of the second particle filter 3 . A further bypass is created through the wall 21 and the housing 4 , which bypasses the cleaned first partial stream 8 around the second particle filter 3 , so that the two cleaned partial exhaust streams 8 , 9 unite behind the second particle filter 3 to form a cleaned total exhaust gas stream.
Fig. 3 zeigt eine dritte Ausführungsform der erfindungsgemäßen Abgasreinigungsvorrichtung 1, bei der ebenfalls in einem Gehäuse 4 der Abgasreinigungsvorrichtung 1 ein erster und ein zweiter Partikelfilter 2, 3 hintereinander angeordnet sind, wobei die Seitenwände der beiden Partikelfilter 2, 3 formschlüssig mit dem Gehäuse 4 der Abgasreinigungsvorrichtung 1 sind. Zwischen den beiden Partikelfiltern 2, 3 ist ein als Wand ausgebildetes Trennelement 31 angeordnet, die die beiden Partikelfilter 2, 3 vollständig voneinander trennt. Ein jeweiliger Bypass 30 bzw. 32 führt einen den ungereinigten Abgasteilstrom 9 dem zweiten Partikelfilter 3 zu, während der Bypass 32 den gereinigten Teilstrom 8 um den zweiten Partikelfilter 3 herumleitet, so daß sich die beiden gereinigten Teilströme 8, 9 zu einem gereinigten Gesamtstrom 5 hinter dem zweiten Partikelfilter 3 vereinigen können. Fig. 3 shows a third embodiment of the exhaust gas purification device 1 according to the invention, in which a first and a second particle filter 2 , 3 are also arranged one behind the other in a housing 4 of the exhaust gas purification device 1 , the side walls of the two particle filters 2 , 3 being form-fitting with the housing 4 Exhaust gas purification device 1 are. Arranged between the two particle filters 2 , 3 is a separating element 31 designed as a wall, which completely separates the two particle filters 2 , 3 from one another. A respective bypass 30 or 32 performs a the unpurified exhaust gas partial stream 9 to the second particulate filter 3, while the bypass 32 the purified partial flow around redirects the second particulate filter 3 8, so that the two purified substreams 8, 9 to a purified total current 5 behind can combine the second particle filter 3 .
11
Abgasreinigungsvorrichtung
Emission control device
22nd
erster Partikelfilter
first particle filter
33rd
zweiter Partikelfilter
second particle filter
44th
Gehäuse
casing
55
Abgasstrom
Exhaust gas flow
66
Stirnfläche
Face
77
Trennelement
Separating element
88th
erster Teilstrom
first partial flow
99
zweiter Teilstrom
second partial flow
1010th
Bypass
bypass
1111
Stirnfläche
Face
1212th
Bypass
bypass
2020th
Bypass
bypass
2121
Trennelement
Separating element
2222
Bypass
bypass
3030th
Bypass
bypass
3131
Trennelement
Separating element
3232
Bypass
bypass
Claims (11)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19855093A DE19855093A1 (en) | 1998-11-28 | 1998-11-28 | Exhaust gas purifier with sequential treatment units includes series of bypasses taking side streams past treatments, preventing complete system blockage and mitigating against high pressure differential |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19855093A DE19855093A1 (en) | 1998-11-28 | 1998-11-28 | Exhaust gas purifier with sequential treatment units includes series of bypasses taking side streams past treatments, preventing complete system blockage and mitigating against high pressure differential |
Publications (1)
Publication Number | Publication Date |
---|---|
DE19855093A1 true DE19855093A1 (en) | 2000-05-31 |
Family
ID=7889433
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19855093A Ceased DE19855093A1 (en) | 1998-11-28 | 1998-11-28 | Exhaust gas purifier with sequential treatment units includes series of bypasses taking side streams past treatments, preventing complete system blockage and mitigating against high pressure differential |
Country Status (1)
Country | Link |
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DE (1) | DE19855093A1 (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001096717A1 (en) * | 2000-06-16 | 2001-12-20 | Johnson Matthey Public Limited Company | Reactor for treating exhaust gas |
EP1167709A1 (en) * | 2000-06-21 | 2002-01-02 | DaimlerChrysler AG | Exhaust gas purification device and process for operating an exhaust gas purification device |
DE10151698A1 (en) * | 2001-10-19 | 2003-04-30 | Eberspaecher J Gmbh & Co | Exhaust system with particle filter for an internal combustion engine |
DE10306462A1 (en) * | 2003-02-17 | 2004-09-02 | Alfred Ernst Buck | Exhaust gas cleaning unit, for an Internal Combustion motor, has disks within a housing between the inflow and outflow, to act as a soot filter and a catalyst for nitrogen oxide products |
DE102005023518A1 (en) * | 2005-05-21 | 2006-11-23 | Umicore Ag & Co. Kg | Blockage-free filter unit with high efficiency |
US7288230B2 (en) | 2002-11-04 | 2007-10-30 | Wartsila Finland Oy | Catalytic converter unit and apparatus |
DE102008033984A1 (en) * | 2008-07-21 | 2010-01-28 | Friedrich Boysen Gmbh & Co. Kg | exhaust system |
WO2011098855A1 (en) * | 2009-06-11 | 2011-08-18 | Agco Sa | Catalytic converter module |
US20120216515A1 (en) * | 2011-02-24 | 2012-08-30 | General Electric Company | Device, method, and system for exhaust gas treatment |
WO2019170335A1 (en) * | 2018-03-06 | 2019-09-12 | Bayerische Motoren Werke Aktiengesellschaft | Exhaust gas system for an internal combustion engine |
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FR1257056A (en) * | 1960-02-13 | 1961-03-31 | Fr D Oxycatalyse Oxy France So | Improvements to the process and device for cleaning the exhaust gases of internal combustion engines |
DE2417435A1 (en) * | 1974-04-10 | 1975-10-30 | Daimler Benz Ag | Catalytic cleaner for engine exhaust gases - volume is divided between two monoliths arranged in exhaust gas flow |
EP0174742A1 (en) * | 1984-08-13 | 1986-03-19 | Arvin Industries, Inc. | Exhaust processor |
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1998
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FR1257056A (en) * | 1960-02-13 | 1961-03-31 | Fr D Oxycatalyse Oxy France So | Improvements to the process and device for cleaning the exhaust gases of internal combustion engines |
DE2417435A1 (en) * | 1974-04-10 | 1975-10-30 | Daimler Benz Ag | Catalytic cleaner for engine exhaust gases - volume is divided between two monoliths arranged in exhaust gas flow |
EP0174742A1 (en) * | 1984-08-13 | 1986-03-19 | Arvin Industries, Inc. | Exhaust processor |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001096717A1 (en) * | 2000-06-16 | 2001-12-20 | Johnson Matthey Public Limited Company | Reactor for treating exhaust gas |
EP1167709A1 (en) * | 2000-06-21 | 2002-01-02 | DaimlerChrysler AG | Exhaust gas purification device and process for operating an exhaust gas purification device |
DE10151698A1 (en) * | 2001-10-19 | 2003-04-30 | Eberspaecher J Gmbh & Co | Exhaust system with particle filter for an internal combustion engine |
US7858050B2 (en) | 2002-11-04 | 2010-12-28 | Wärtsilä Finland Oy | Catalytic converter unit and apparatus |
US7288230B2 (en) | 2002-11-04 | 2007-10-30 | Wartsila Finland Oy | Catalytic converter unit and apparatus |
DE10306462A1 (en) * | 2003-02-17 | 2004-09-02 | Alfred Ernst Buck | Exhaust gas cleaning unit, for an Internal Combustion motor, has disks within a housing between the inflow and outflow, to act as a soot filter and a catalyst for nitrogen oxide products |
DE102005023518A1 (en) * | 2005-05-21 | 2006-11-23 | Umicore Ag & Co. Kg | Blockage-free filter unit with high efficiency |
WO2006125516A1 (en) | 2005-05-21 | 2006-11-30 | Umicore Ag & Co. Kg | Highly effective non-clogging filter unit |
DE102005023518B4 (en) * | 2005-05-21 | 2007-09-06 | Umicore Ag & Co. Kg | Blockage-free filter unit with high efficiency |
DE102008033984A1 (en) * | 2008-07-21 | 2010-01-28 | Friedrich Boysen Gmbh & Co. Kg | exhaust system |
US8468802B2 (en) | 2008-07-21 | 2013-06-25 | Friedrich Boysen Gmbh & Co. Kg | Exhaust gas system |
DE102008033984B4 (en) * | 2008-07-21 | 2016-03-24 | Friedrich Boysen Gmbh & Co. Kg | exhaust system |
WO2011098855A1 (en) * | 2009-06-11 | 2011-08-18 | Agco Sa | Catalytic converter module |
US20120216515A1 (en) * | 2011-02-24 | 2012-08-30 | General Electric Company | Device, method, and system for exhaust gas treatment |
WO2012115777A3 (en) * | 2011-02-24 | 2012-11-22 | General Electric Company | Device, method, and system for exhaust gas treatment |
WO2019170335A1 (en) * | 2018-03-06 | 2019-09-12 | Bayerische Motoren Werke Aktiengesellschaft | Exhaust gas system for an internal combustion engine |
CN111406149A (en) * | 2018-03-06 | 2020-07-10 | 宝马股份公司 | Exhaust system for internal combustion engine |
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