DE102017220470B3 - Arrangement for cleaning the exhaust gases of an internal combustion engine - Google Patents
Arrangement for cleaning the exhaust gases of an internal combustion engine Download PDFInfo
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- DE102017220470B3 DE102017220470B3 DE102017220470.2A DE102017220470A DE102017220470B3 DE 102017220470 B3 DE102017220470 B3 DE 102017220470B3 DE 102017220470 A DE102017220470 A DE 102017220470A DE 102017220470 B3 DE102017220470 B3 DE 102017220470B3
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- 239000007789 gas Substances 0.000 title claims abstract description 48
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 13
- 238000004140 cleaning Methods 0.000 title claims abstract description 7
- 239000002245 particle Substances 0.000 claims abstract description 40
- 238000001914 filtration Methods 0.000 claims abstract description 4
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- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 1
- 241000237858 Gastropoda Species 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/20—Combinations of devices covered by groups B01D45/00 and B01D46/00
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2279/00—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses
- B01D2279/30—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses for treatment of exhaust gases from IC Engines
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/08—Other arrangements or adaptations of exhaust conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- 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
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
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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
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
- F01N13/1844—Mechanical joints
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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
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
- F01N13/1844—Mechanical joints
- F01N13/1855—Mechanical joints the connection being realised by using bolts, screws, rivets or the like
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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
- F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
- F01N2260/06—Exhaust treating devices having provisions not otherwise provided for for improving exhaust evacuation or circulation, or reducing back-pressure
-
- 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
- F01N2330/00—Structure of catalyst support or particle filter
- F01N2330/08—Granular material
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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
- F01N2330/00—Structure of catalyst support or particle filter
- F01N2330/10—Fibrous material, e.g. mineral or metallic wool
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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
- F01N2330/00—Structure of catalyst support or particle filter
- F01N2330/12—Metallic wire mesh fabric or knitting
-
- 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
- F01N2450/24—Methods or apparatus for fitting, inserting or repairing different elements by bolts, screws, rivets or the like
-
- 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
- F01N2470/02—Tubes being perforated
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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
- F01N2470/20—Dimensional characteristics of tubes, e.g. length, diameter
-
- 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
- F01N3/0212—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 with one or more perforated tubes surrounded by filtering material, e.g. filter candles
-
- 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
- F01N3/022—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 characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
- F01N3/0224—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 characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous the structure being granular
-
- 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
- F01N3/022—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 characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
- F01N3/0226—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 characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous the structure being fibrous
-
- 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
- F01N3/033—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 in combination with other devices
- F01N3/035—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 in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
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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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Processes For Solid Components From Exhaust (AREA)
Abstract
Anordnung zur Reinigung der Abgase einer Brennkraftmaschine, wobei die Anordnung wenigstens ein äußeres umhüllendes Rohr und wenigstens einen in dem Rohr angeordneten Abgasfilter zur Ausfilterung von Partikeln aufweist. Es wird vorgeschlagen, das wenigstens eine äußere umhüllende Rohr 1, 2, 19 wendelförmig auszubilden und den wenigstens einen Abgasfilter 3, 3', 3" im Innern des umhüllenden wendelförmigen Rohres 1, 2, 19 in dessen Längserstreckung zumindest abschnittweise anzuordnen, wobei der wenigstens eine Abgasfilter 3, 3', 3" in Längserstreckung des umhüllenden Rohres 1, 2, 19 eine vom Abgas frei durchströmbare, der Wendelung des äußeren umhüllenden Rohres folgende röhrenförmige Ausnehmung 4, 4', 4" aufweist, deren Querschnittfläche ein Vielfaches der Querschnittsfläche eines Partikels 22, 22' beträgt. Arrangement for cleaning the exhaust gases of an internal combustion engine, wherein the arrangement comprises at least one outer enveloping tube and at least one arranged in the tube exhaust filter for filtering out particles. It is proposed to form the at least one outer enclosing pipe 1, 2, 19 helical and at least partially arrange the at least one exhaust gas filter 3, 3 ', 3 "in the interior of the enveloping helical pipe 1, 2, 19 in its longitudinal extent, wherein the at least an exhaust gas filter 3, 3 ', 3 "in the longitudinal extent of the enveloping tube 1, 2, 19 a free flow through the exhaust, the spiraling of the outer enclosing tube following tubular recess 4, 4', 4" whose cross-sectional area is a multiple of the cross-sectional area of a Particles 22, 22 'amounts to.
Description
Die Erfindung betrifft eine Anordnung zur Reinigung der Abgase einer Brennkraftmaschine gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to an arrangement for cleaning the exhaust gases of an internal combustion engine according to the preamble of patent claim 1.
Sowohl bei der dieselmotorischen Verbrennung als auch bei der ottomotorischen Verbrennung bei Direkteinspritzung des Kraftstoffs kommt es zu einer Emission von Kohlenstoffpartikeln, die aus dem Abgas wieder entfernt werden müssen. Da eine Oxidation der Kohlenstoffpartikel direkt im Abgas nicht möglich ist, müssen diese zunächst angelagert und dann mit Hilfe von Sauerstoff oder Stickstoffdioxid oxidiert werden. Um eine Einlagerung der Kohlenstoffpartikel zu erreichen, ist es üblich, in einem umhüllenden rohrartigen Gehäuse einen Partikelfilter oder Partikelabscheider vorzusehen, der die Kohlenstoffpartikel aus dem durch den Partikelfilter oder Partikelabscheider strömenden Abgasstrom herausfiltert, bzw. anlagert. Verwendet man Partikelfilter, wie sie zum Beispiel aus der
Um den hohen Abgasgegendruck zu vermeiden, wurde mit der
Es ist an dieser Stelle anzumerken, dass nachfolgend unter einem Partikel alles verstanden wird, was sich von dem umgebenden, kontinuierlichen gasförmigen Medium durch eine Phasengrenzfläche unterscheidet, also alle festen oder flüssigen Bestandteile des Abgases.It should be noted at this point that the term "particle" is understood below to mean everything that differs from the surrounding, continuous gaseous medium by a phase boundary, ie all solid or liquid constituents of the exhaust gas.
Ausgehend vom vorstehend genannten Stand der Technik ist es Aufgabe der Erfindung, eine Anordnung anzugeben, die einerseits eine hohe Abscheiderate erreicht und andererseits den Abgasgegendruck möglichst niedrig hält.Based on the above-mentioned prior art, it is an object of the invention to provide an arrangement which on the one hand reaches a high deposition rate and on the other hand keeps the exhaust back pressure as low as possible.
Die Aufgabe ist durch die Merkmale des Anspruches 1 gelöst. Bevorzugte Weiterbildungen der Erfindung sind in den abhängigen Ansprüchen offenbart.The object is solved by the features of claim 1. Preferred embodiments of the invention are disclosed in the dependent claims.
Bei einer Anordnung, die wenigstens ein äußeres umhüllendes Rohr und wenigstens einen in dem Rohr angeordneten Abgasfilter zur Ausfilterung von Partikeln aufweist, wird vorgeschlagen, dass das wenigstens eine äußere umhüllende Rohr wendelförmig ausgebildet ist und der wenigstens eine Abgasfilter im Innern des umhüllenden wendelförmigen Rohres in dessen Längserstreckung zumindest abschnittweise angeordnet ist. Weiter wird vorgeschlagen, dass der wenigstens eine Abgasfilter in Längserstreckung des wendelförmigen Rohres eine vom Abgas frei durchströmbare, der Wendelung des äußeren umhüllenden Rohres folgende röhrenförmige Ausnehmung aufweist, deren Querschnittfläche ein Vielfaches der Querschnittsfläche eines Partikels beträgt. Durch diese Ausbildung wird vorteilhaft erreicht, dass sich einerseits durch die frei durchströmbare röhrenförmige Ausnehmung kein unzulässig hoher Abgasgegendruck aufbaut, andererseits wird der Abgasstrom durch die wendelförmige Ausbildung des Außenrohrs auf eine wendelförmige Bahn gezwungen, so dass im Abgas enthaltene Partikel aufgrund ihrer Massenträgheit eine in Richtung Wendelaußenseite gerichtete Beschleunigung erfahren, wodurch sie auf ihrem Weg durch die Wendel unweigerlich in den Randbereich befördert werden, wo sich Filtermaterial befindet, in dem die Partikel eingefangen und angelagert werden. Durch die Wendelung wird weiter erreicht, dass der Abgasweg zwischen der Zuströmöffnung und der Abströmöffnung der Anordnung stark verlängert wird, was die Partikelabscheiderate deutlich erhöht und die nachfolgende Oxidation der angelagerten Partikel positiv beeinflusst.In an arrangement comprising at least one outer enveloping tube and at least one exhaust filter disposed in the tube for particulate filtering, it is proposed that the at least one outer enveloping tube be helical in shape and the at least one exhaust filter be disposed inside the enveloping helical tube Longitudinal extension is arranged at least in sections. It is further proposed that the at least one exhaust gas filter in the longitudinal extent of the helical tube has a tubular recess which can flow freely through the exhaust gas and which follows the helix of the outer enveloping tube, whose cross-sectional area is a multiple of the cross-sectional area of a particle. By this design is advantageously achieved that on the one hand by the freely flowable tubular recess no unacceptably high exhaust back pressure builds up, on the other hand, the exhaust gas flow is forced by the helical design of the outer tube on a helical path, so that particles contained in the exhaust due to their inertia in the direction On the outside of the spiral, they are inevitably transported to the edge area where there is filter material in which the particles are captured and deposited. The spiraling further ensures that the exhaust gas path between the inflow opening and the outflow opening of the arrangement is greatly prolonged, which significantly increases the particle separation rate and positively influences the subsequent oxidation of the accumulated particles.
Eine Weiterbildung der Anordnung sieht vorteilhaft eine Mehrzahl äußerer umhüllender, wendelförmig ausgebildeter Rohre vor, die jeweils wenigstens einen im Innern jedes umhüllenden wendelförmigen Rohres, in dessen Längserstreckung zumindest abschnittweise angeordneten Abgasfilter aufweisen, wobei der wenigstens eine Abgasfilter in Längserstreckung des wendelförmigen Rohres eine vom Abgas frei durchströmbare röhrenförmige Ausnehmung aufweist, deren Querschnittfläche ein Vielfaches der Querschnittsfläche eines Partikels beträgt und wobei die Mehrzahl der äußeren umhüllenden wendelförmig ausgebildeten Rohre in Form einer Mehrfachhelix angeordnet sind. Durch diese Ausgestaltung der Anordnung wird erreicht, dass der Abgasstrom in Teilströme mit geringerem Strömungsquerschnitt aufgeteilt wird, wodurch sich die Partikelabscheiderate nochmals verbessert.A development of the arrangement advantageously provides a plurality of outer enveloping helically formed tubes, each having at least one inside each enveloping helical tube, in the longitudinal extent at least partially arranged exhaust gas filter, wherein the at least one exhaust gas filter in the longitudinal extent of the helical tube from the Exhaust gas freely permeable tubular recess has, whose cross-sectional area is a multiple of the cross-sectional area of a particle and wherein the plurality of outer enveloping helically shaped tubes are arranged in the form of a multiple helix. This configuration of the arrangement ensures that the exhaust gas flow is divided into partial flows with a smaller flow cross-section, whereby the particle separation rate is improved even further.
Um die einfache und damit vorteilhafte Verbindbarkeit der Anordnung mit vorgeordneten oder nachgeordneten Teilen des Abgastraktes zu vereinfachen, ist es von Vorteil, dass das oder die äußeren Rohre jeweils mit ihren Rohrenden an Flanschen fest angeordnet sind, wobei die Flansche für jedes Rohrende eine Durchgangsöffnung aufweisen und wobei der erste Flansch mit einem Zuströmflansch einer Abgasanlage und der zweite Flansch mit einem Abströmflansch der Abgasanlage nach außen hin gasdicht verbindbar ist.To simplify the simple and thus advantageous connectivity of the arrangement with upstream or downstream parts of the exhaust system, it is advantageous that the one or more outer tubes are fixedly arranged with their pipe ends on flanges, the flanges have a through hole for each pipe end and wherein the first flange with an inflow flange of an exhaust system and the second flange with a discharge flange of the exhaust system is connected to the outside gas-tight.
In weiterer Ausgestaltung der Anordnung kann vorgesehen sein, dass das Filtermaterial des Abgasfilters einem der Typen Gewirk, Gestrick, Faserbulk oder Granulat angehört. Derartiges Filtermaterial ist für Abgasfilter gebräuchlich, kostengünstig und leicht einbaubar.In a further embodiment of the arrangement can be provided that the filter material of the exhaust gas filter belongs to one of the types knitted fabric, knitted fabric, pulp or granules. Such filter material is common for exhaust filters, inexpensive and easy to install.
Um derartiges loses Filtermaterial in Position zu halten, kann vorteilhaft vorgesehen sein, die röhrenförmige Ausnehmung im Abgasfilter durch ein das Filtermaterial abstützendes perforiertes Innenrohr auszubilden. Um bei abschnittweise im umhüllenden Außenrohr angeordnetem Filtermaterial dieses auch in Längserstreckung des Außenrohres in Position zu halten ist es weiter vorteilhaft, das Filtermaterial in axialer Richtung durch auf dem Innenrohr angeordneten Kreisringscheiben zu fixieren.In order to keep such loose filter material in position, may be advantageously provided to form the tubular recess in the exhaust filter by a filter material supporting the perforated inner tube. In order to keep this in the longitudinal direction of the outer tube in position in sections arranged in the enveloping outer tube filter material, it is also advantageous to fix the filter material in the axial direction by arranged on the inner tube annular discs.
Eine alternative Ausgestaltungsmöglichkeit sieht vor, dass das Filtermaterial ein rohrförmig ausgebildeter, offenporiger Festkörper ist. Derartige Materialien sind ebenfalls in Verbindung mit der Abgasfilterung erprobt und können vorteilhaft eingesetzt werden.An alternative embodiment possibility provides that the filter material is a tubular, open-pore solid. Such materials are also tested in conjunction with the exhaust gas filtration and can be used advantageously.
Weiter besteht vorteilhaft die Möglichkeit, das verwendete Filtermaterial mit katalytisch wirksamen Bestandteilen zu versehen, um nachfolgende Abgasreinigungsschritte zu vereinfachen. Dies kann dadurch geschehen, dass dem Filtermaterial Katalysatormaterial beigemischt wird oder dass das Filtermaterial mit Katalysatormaterial beschichtet wird. Ein nachfolgender Abgasnachbehandlungsschritt kann zum Beispiel die Entfernung von Stickoxiden sein.Furthermore, it is advantageously possible to provide the filter material used with catalytically active constituents in order to simplify subsequent exhaust gas purification steps. This can be done by adding catalyst material to the filter material or by coating the filter material with catalyst material. A subsequent exhaust aftertreatment step may be, for example, the removal of nitrogen oxides.
Weitere Ausgestaltungen und Vorteile der Erfindung werden nachfolgend anhand der Zeichnung näher erläutert. Es zeigen:
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1 Prinzipdarstellung einer erfindungsgemäßen Abgasreinigungseinrichtung mit zwei in Form einer Doppelhelix angeordneten wendelförmig ausgebildeten Außenrohren, in Seitenansicht; -
2 Prinzipdarstellung eines Flanschanschlusses der Anordnung gemäß1 ; -
3 Prinzipdarstellung einer ersten Ausbildungsform einer Filteranordnung in Seitenansicht und Draufsicht; -
4 Prinzipdarstellung einer zweiten Ausbildungsform einer Filteranordnung in Seitenansicht und Draufsicht; -
5a Prinzipdarstellung einer dritten Ausbildungsform einer Filteranordnung in Teilseitenansicht von der Seite gesehen; und -
5b Darstellung aus5a quer zur Längserstreckung geschnitten.
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1 Schematic representation of an exhaust gas purification device according to the invention with two arranged in the form of a double helix helical outer tubes, in side view; -
2 Schematic representation of a flange connection of the arrangement according to1 ; -
3 Schematic representation of a first embodiment of a filter assembly in side view and top view; -
4 Schematic representation of a second embodiment of a filter assembly in side view and top view; -
5a Schematic representation of a third embodiment of a filter assembly seen in partial side view from the side; and -
5b Presentation off5a cut transversely to the longitudinal extent.
Die Anordnung zur Reinigung der Abgase einer Brennkraftmaschine besteht im Wesentlichen aus einem ersten umhüllenden Rohr
Selbstverständlich ist die vorstehend beschriebene Anordnung nicht auf die Verwendung von nur zwei umhüllenden Rohren
Eine weitere mögliche Ausführungsform der Abgasfilter
Selbstverständlich kann das im vorstehenden Beispiel als Filtermatte
Neben den vorstehend beschriebenen Ausbildungsformen besteht natürlich auch die Möglichkeit, in ein wendelförmiges umhüllendes Rohr
Um zunächst aufzuzeigen, wie sich Abgaspartikel in dem wendelförmig ausgebildeten umhüllenden Rohr
Selbstverständlich ist die Bewegung der Abgaspartikel ähnlich, wenn es sich um eine Anordnung handelt, wie sie in Verbindung mit
Zur Erzeugung der vorstehend erwähnten Filterbeschichtung
Hinsichtlich der vorstehend beschriebenen Anordnung zur Reinigung der Abgase einer Brennkraftmaschine bestehen zahlreiche Variationsmöglichkeiten, mit deren Hilfe sich eine solche Anordnung an die baulichen Gegebenheiten eines Kraftfahrzeugs einerseits und an die Leistung der Brennkraftmaschine andererseits anpassen lässt. So kann die Anzahl der umhüllenden Rohre, deren Länge und deren Durchmesser entsprechend gewählt werden. Auch die Steigung der Wendelung der umhüllenden Rohre ist eine Variable, die der Auslegung der Anordnung dient. Weiter kann die Anzahl und Abmessung der Abgasfilter, sowie der Durchmesser der frei durchströmbaren röhrenförmigen Ausnehmung in den Abgasfiltern und der Typ der verwendeten Abgasfilter entsprechend den baulichen Gegebenheiten und der Art und Leistung der Brennkraftmaschine gewählt werden.With regard to the above-described arrangement for cleaning the exhaust gases of an internal combustion engine, there are numerous possible variations, with the help of which such an arrangement can be adapted to the structural conditions of a motor vehicle on the one hand and to the performance of the internal combustion engine on the other hand. Thus, the number of enveloping tubes, their length and their diameter can be selected accordingly. Also, the pitch of the helix of the enveloping tubes is a variable that serves the design of the assembly. Furthermore, the number and dimensions of the exhaust gas filters, as well as the diameter of the freely permeable tubular recess in the exhaust gas filters and the type of exhaust gas filter used can be selected according to the structural conditions and the type and performance of the internal combustion engine.
Claims (9)
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Cited By (1)
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CN113123851A (en) * | 2019-12-30 | 2021-07-16 | 珠海六和节能投资有限公司 | Automobile exhaust absorption and purification device and using method thereof |
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US4133762A (en) | 1975-12-12 | 1979-01-09 | Visceglia Marco P | Coil type filter |
JP2000005536A (en) | 1998-06-24 | 2000-01-11 | Etsuro Kato | Spiral honeycomb filter body |
EP1072765B1 (en) | 1999-07-26 | 2004-06-30 | Man Nutzfahrzeuge Ag | Method and apparatus for separating fine particulate matter from exhaust gas of an internal combustion engine |
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CN113123851A (en) * | 2019-12-30 | 2021-07-16 | 珠海六和节能投资有限公司 | Automobile exhaust absorption and purification device and using method thereof |
CN113123851B (en) * | 2019-12-30 | 2022-05-24 | 珠海六和节能投资有限公司 | Automobile exhaust absorption and purification device and using method thereof |
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