EP2098697B2 - Abgassystem eines Verbrennungsmotors - Google Patents

Abgassystem eines Verbrennungsmotors Download PDF

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Publication number
EP2098697B2
EP2098697B2 EP20080425083 EP08425083A EP2098697B2 EP 2098697 B2 EP2098697 B2 EP 2098697B2 EP 20080425083 EP20080425083 EP 20080425083 EP 08425083 A EP08425083 A EP 08425083A EP 2098697 B2 EP2098697 B2 EP 2098697B2
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EP
European Patent Office
Prior art keywords
tabs
exhaust system
exhaust
tubular body
exhaust duct
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Application number
EP20080425083
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English (en)
French (fr)
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EP2098697B1 (de
EP2098697A1 (de
Inventor
Massimiliano Gambarotto
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Marelli Europe SpA
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Magneti Marelli SpA
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Application filed by Magneti Marelli SpA filed Critical Magneti Marelli SpA
Priority to EP20080425083 priority Critical patent/EP2098697B2/de
Priority to DE602008002403T priority patent/DE602008002403D1/de
Publication of EP2098697A1 publication Critical patent/EP2098697A1/de
Publication of EP2098697B1 publication Critical patent/EP2098697B1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/431—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor
    • B01F25/4315—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor the baffles being deformed flat pieces of material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/206—Adding periodically or continuously substances to exhaust gases for promoting purification, e.g. catalytic material in liquid form, NOx reducing agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/21—Mixing gases with liquids by introducing liquids into gaseous media
    • B01F23/213—Mixing gases with liquids by introducing liquids into gaseous media by spraying or atomising of the liquids
    • B01F23/2132—Mixing gases with liquids by introducing liquids into gaseous media by spraying or atomising of the liquids using nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/314—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit
    • B01F25/3141—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit with additional mixing means other than injector mixers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/431—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor
    • B01F25/43197—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor characterised by the mounting of the baffles or obstructions
    • B01F25/431974—Support members, e.g. tubular collars, with projecting baffles fitted inside the mixing tube or adjacent to the inner wall
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/20—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a flow director or deflector
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F01N2570/14—Nitrogen oxides
    • 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

Definitions

  • the present invention relates to an exhaust system of an internal combustion engine provided with an exhaust gas after-treatment arrangement.
  • the present invention is advantageously intended for use in an exhaust system of an internal combustion engine provided with an exhaust gas after-treatment arrangement to which the following description specifically refers but without loss of generality.
  • a problem associated with introducing an aqueous urea solution into the exhaust system is that the decomposition of the urea also results in the formation of isocyanic acid (HNCO), which tends to thicken and polymerize, building up on the inside walls of the exhaust system and resulting in the formation of solid deposits that are difficult to remove.
  • HNCO isocyanic acid
  • Patent application EP1514591A1 describes a mixer, which is arranged in an exhaust system of an internal combustion engine immediately upstream of an SCR catalyst into which the hot exhaust gas mixed with reducing agents is fed.
  • patent applications EP1022048A1 , DE10060808A1 , WO0107763A1 , WO9913972A1 , WO9905402A1 , WO9905401A1 , EP1748162A1 , DE10248294A1 , WO0009869A1 , WO2005073524A1 , WO0112301A1 , EP0526392A1 , EP0894523A1 describe exhaust systems provided with mixers arranged close to reducing agent feeder devices.
  • known mixers of the type described above have the drawback of not achieving an ideal balance between the opposing needs for effectiveness (i.e. to guarantee adequate mixing of the exhaust gas) and efficiency (i.e. to limit loss of pressure in the exhaust gas).
  • known mixers of the type described above are either low in effectiveness (i.e. they do not guarantee adequate mixing of the exhaust gas) or low in efficiency (i.e. they cause high losses of pressure in the exhaust gas).
  • WO2007127529A2 discloses an exhaust aftertreatment system including injection of chemical species; the system has a mixer provided by a stamped muffler flange and arranged in the exhaust pipe between the injector and the aftertreatment element.
  • the purpose of the present invention is to provide an exhaust system of an internal combustion engine, said exhaust system overcoming the drawbacks described above and, in particular, being easy and inexpensive to produce.
  • an exhaust system of an internal combustion engine is produced according to that set forth in the appended claims.
  • number 1 indicates an overall exhaust system of a diesel" cycle internal combustion engine 2 (i.e. an engine that runs on diesel or similar types of fuel).
  • the exhaust system 1 discharges the exhaust gas into the atmosphere and comprises an exhaust duct 3 which originates from an exhaust manifold 4 of the internal combustion engine 2.
  • An oxidation catalyst 5 and a particulate filter 6 are arranged on the exhaust duct 3; in figure 1 the oxidation catalyst 5 and the particulate filter 6 are arranged in series inside a single common tubular container.
  • an SCR (Selective Catalytic Reduction) system 7 for after-treatment of NO x (NO and NO 2 ) molecules is arranged on the exhaust duct 3 and downstream of the oxidation catalyst 5.
  • the SCR catalytic system 7 can comprise a single SCR catalyst 7 as illustrated in figure 1 , or a series of catalysts (usually three) that together optimize the SCR function for after-treatment of NO x molecules.
  • a feeder device 8 is connected to the exhaust duct 3, said device 8 being suitable to feed a reducing agent and in particular an aqueous urea solution (i.e. a solution of urea and water) into said exhaust duct 3.
  • a reducing agent i.e. a solution of urea and water
  • a aqueous urea solution i.e. a solution of urea and water
  • the urea fed into said exhaust duct 3 spontaneously decomposes into isocyanic acid (HNCO) and ammonia (NH 3 ), said ammonia acting as a reducing agent in the catalytic system 7 to facilitate the conversion of the NO x molecules into nitrogen (N 2 ) and water (H 2 O).
  • a static mixer 9 is arranged on the exhaust duct 3, in correspondence with the feeder device 3.
  • the function of said mixer 9 is to generate turbulence in the exhaust gas in the exhaust duct 3 in order to prevent the localized thickening of the isocyanic acid (which forms during the decomposition of the urea) and thus prevent the polymerization of said isocyanic acid and improve the efficiency of the catalytic system 7 by distributing the ammonia more uniformly in the exhaust gas.
  • the static mixer 9 is arranged downstream of the feeder device 8 (i.e. between the feeder device 8 and the catalytic system 7); alternatively, the static mixer 9 could be arranged upstream of the feeder device 8. According to an alternative embodiment which is not illustrated, two static mixers 9 could be provided and arranged respectively upstream and downstream of the feeder device 8.
  • the static mixer 9 comprises a cylindrical tubular body 10, which has a central axis of symmetry 11 and two opposing annular edges 12, and two groups 13 of tabs 14 arranged on opposite sides of the tubular body 10.
  • each group 13 the tabs 14 extend towards the outside of the tubular body 10 starting from a respective annular edge 12 of said tubular body 10, they are arranged at a distance from one another so as to leave an empty space 15 between two successive tabs 14, and slope towards the central axis of symmetry 11 so as to converge towards said central axis of symmetry 11.
  • Each tab 14 of the static mixer 9 has substantially the shape of an isosceles trapezium with a longer base 16 arranged over the respective annular edge 12 of the tubular body 10 and a shorter base 17 which is free.
  • the two groups 13 of tabs 14 are staggered so that each tab 14 of one group 13 is longitudinally aligned along the central axis of symmetry 11 with an empty space 15 between two successive tabs 14 of the other group 13.
  • each tab 14 extends for the equivalent of the extension of an empty space 15 between two successive tabs 14; for example in the embodiment that is illustrated there are four tabs 14 each having an angular extension of 45° and alternating with four empty spaces 15 each having an angular extension of 45°.
  • each tab 14 forms an angle ⁇ of between 30° and 60° and preferably of approximately 45° with the tubular body 10.
  • the tubular body 10 preferably extends longitudinally along the central axis of symmetry 11 by at least 10 mm.
  • each group 13 has four tabs 14 (and thus four empty spaces 15 arranged alternately with respect to the tabs 14); more generally, each group 13 is made up of between 3 and 6 tabs 14.
  • the static mixer 9 only comprises a single group 13 of tabs 14 arranged along an annular edge 12 of the tubular body 10.
  • the static mixer 9 comprises a number of fastening brackets 18, which extend parallel to the central axis of symmetry 11 starting from an annular edge 12 of the tubular body 10 and are arranged in correspondence with the empty space 15 between two successive tabs 14.
  • the fastening brackets 18 are welded or riveted to a side wall of the exhaust duct 3 so that the static mixer 9 is integral with the exhaust duct 3; according to the embodiment in figures 2-4 in which the static mixer 9 is not provided with the fastening brackets 18, the static mixer 9 is fastened to the exhaust duct 3 by welding or riveting the tubular body 10 to the side wall of the exhaust duct 3.
  • the static mixer 9 can be made by die-forming a flat metal sheet to define the tabs 14 (and, where applicable, the brackets 18), and then folding the die-formed sheet round a cylindrical core to give said die-formed sheet a tubular shape which is stabilized by means of welding or riveting; the tabs 14 are then folded towards the central axis of symmetry 11 to give them the shape described above.
  • the static mixer 9 can be made by die-forming a tubular body of sheet metal to define the tabs 14 (and, where applicable, the brackets 18) and then folding the tabs 14 towards the central axis of symmetry 11 to give the tabs 14 the shape described above.
  • the feeder device 8 is arranged upstream of the oxidation catalyst 5 to feed the fuel (for example diesel) into the exhaust duct 3, so that said fuel is burnt in the oxidation catalyst 5 to increase the temperature inside said oxidation catalyst 5 during a regeneration process of the particulate filter 6.
  • the static mixer 9 is arranged upstream of the oxidation catalyst 5.
  • the static mixer 9 described above has numerous advantages, in that it is simple and inexpensive to produce, is particularly robust (and thus has a long working life and very low risk of breaking) and above all it achieves an ideal balance between the opposing needs for effectiveness (i.e. to guarantee adequate mixing of the exhaust gas) and efficiency (i.e. to cause limited loss of pressure in the exhaust gas).
  • the static mixer 9 described above achieves high effectiveness (i.e. it guarantees adequate mixing of the exhaust gas) and high efficiency (i.e. it causes limited loss of pressure in the exhaust gas).

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Dispersion Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas After Treatment (AREA)

Claims (13)

  1. Abgassystem (1) einer Brennkraftmaschine (2), wobei das Abgassystem (1) umfasst:
    ein Abgasrohr (3), das von einem Abgaskrümmer (4) der Brennkraftmaschine (2) ausgeht;
    wenigstens ein katalytisches System (7; 5), das an dem Abgasrohr (3) angeordnet ist;
    eine Einleitungsvorrichtung (8), die in Strömungsrichtung direkt vor dem katalytischen System (7; 5) mit dem Abgasrohr (3) verbunden ist, um in das Abgasrohr (3) ein Additiv einzuleiten; und
    wenigstens einen statischen Mischer (9), der an dem Abgasrohr (3) entsprechend der Einleitungsvorrichtung (8) angeordnet ist, vor oder hinter der Einleitungsvorrichtung (8) angeordnet ist und einen rohrförmigen Körper (10) aufweist, der eine mittige Symmetrieachse und zwei gegenüberliegende ringförmige Kanten (12) und wenigstens eine Gruppe (13) von Ansätzen (14) besitzt, die sich beginnend bei einer jeweiligen ringförmigen Kante (12) des rohrförmigen Körpers (10) zur Außenseite des rohrförmigen Körpers (10) erstrecken, in Umfangsrichtung in einem Abstand voneinander angeordnet sind, um zwischen zwei aufeinander folgenden Ansätzen (14) einen leeren Raum (15) zu lassen, und von der ringförmigen Kante (12) zu der mittigen Symmetrieachse (11) so geneigt sind, dass sie zur mittigen Symmetrieachse (11) zusammenlaufen;
    wobei der statische Mischer (9) zwei Gruppen (13) von Ansätzen (14) umfasst, die längs der zwei gegenüberliegenden ringförmigen Kanten (12) des rohrförmigen Körpers (10) angeordnet sind; und
    wobei die zwei Gruppen (13) von Ansätzen (14) in Umfangsrichtung zueinander versetzt sind, so dass jeder Ansatz (14) einer Gruppe (13) longitudinal längs der mittigen Symmetrieachse (11) auf einen leeren Raum (15) zwischen zwei aufeinander folgenden Ansätzen (14) der anderen Gruppe (13) ausgerichtet ist;
    wobei das Abgassystem (1) dadurch gekennzeichnet ist, dass der statische Mischer (9) eine Anzahl Befestigungsträger (18) umfasst, die sich parallel zu der mittigen Symmetrieachse (11) erstrecken und von einer ringförmigen Kante (12) des rohrförmigen Körpers (10) ausgehen und entsprechend dem Leerraum (15) zwischen zwei aufeinander folgenden Ansätzen (14) angeordnet sind.
  2. Abgassystem (1) nach Anspruch 1, wobei jeder Ansatz (14) des statischen Mischers (9) im Wesentlichen die Form eines gleichschenkligen Trapezes besitzt, dessen längere Basis (16) über der jeweiligen ringförmigen Kante (12) des rohrförmigen Körpers (10) angeordnet ist und dessen kürzere Basis (17) frei ist.
  3. Abgassystem (1) nach Anspruch 2, wobei das Verhältnis zwischen dem Durchmesser des durch die längeren Basen (16) der Ansätze (14) definierten Umfangs und dem Durchmesser des durch die kürzeren Basen (17) der Ansätze (14) definierten Umfangs zwischen 2 und 4 liegt.
  4. Abgassystem (1) nach Anspruch 3, wobei das Verhältnis zwischen dem Durchmesser des durch die längeren Basen (16) der Ansätze (14) definierten Umfangs und dem Durchmesser des durch die kürzeren Basen (17) der Ansätze (14) definierten Umfangs etwa 3 beträgt.
  5. Abgassystem (1) nach einem der Ansprüche 1 bis 4, wobei entsprechend der jeweiligen ringförmigen Kante (12) des rohrförmigen Körpers (10) jeder Ansatz (14) sich als Äquivalent zu einem leeren Raum (15) zwischen zwei aufeinander folgenden Ansätzen (14) erstreckt.
  6. Abgassystem (1) nach einem der Ansprüche 1 bis 5, wobei jeder Ansatz (14) einen Winkel im Bereich von 30° bis 60° zu dem rohrförmigen Körper (10) bildet.
  7. Abgassystem (1) nach Anspruch 6, wobei jeder Ansatz (14) einen Winkel von etwa 45° zu dem rohrförmigen Körper (10) bildet.
  8. Abgassystem (1) nach einem der Ansprüche 1 bis 7, wobei jede Gruppe (13) zwischen 3 und 6 Ansätzen (14) besitzt.
  9. Abgassystem (1) nach Anspruch 8, wobei jede Gruppe (13) 4 Ansätze (14) besitzt.
  10. Abgassystem (1) nach einem der Ansprüche 1 bis 9, wobei sich der ringförmige Körper (10) in Längsrichtung längs der mittigen Symmetrieachse (11) über wenigstens 10 mm erstreckt.
  11. Abgassystem (1) nach einem der Ansprüche 1 bis 10, wobei die Befestigungsträger (18) mit einer Seitenwand des Abgasrohrs (3) verschweißt oder vernietet sind.
  12. Abgassystem (1) nach einem der Ansprüche 1 bis 11, wobei das katalytische System (7; 5) umfasst:
    einen Oxidationskatalysator (5), der an dem Abgasrohr (3) angeordnet ist; und
    ein katalytisches SCR-System (7), das an dem Abgasrohr (3) in Strömungsrichtung hinter dem Oxidationskatalysator (5) und hinter der Einleitungsvorrichtung (8) angeordnet ist.
  13. Abgassystem (1) nach einem der Ansprüche 1 bis 12, wobei das katalytische System (7; 5) einen Oxidationskatalysator (5) umfasst, der an dem Abgasrohr (3) in Strömungsrichtung hinter der Einleitungsvorrichtung (8) angeordnet ist.
EP20080425083 2008-02-12 2008-02-12 Abgassystem eines Verbrennungsmotors Active EP2098697B2 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20080425083 EP2098697B2 (de) 2008-02-12 2008-02-12 Abgassystem eines Verbrennungsmotors
DE602008002403T DE602008002403D1 (de) 2008-02-12 2008-02-12 Abgassystem eines Verbrennungsmotors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20080425083 EP2098697B2 (de) 2008-02-12 2008-02-12 Abgassystem eines Verbrennungsmotors

Publications (3)

Publication Number Publication Date
EP2098697A1 EP2098697A1 (de) 2009-09-09
EP2098697B1 EP2098697B1 (de) 2010-09-01
EP2098697B2 true EP2098697B2 (de) 2015-05-20

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DE (1) DE602008002403D1 (de)

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US8359832B2 (en) 2009-12-21 2013-01-29 Caterpillar Inc. SCR reductant mixer
FR2956155B1 (fr) * 2010-02-05 2013-09-13 Peugeot Citroen Automobiles Sa Ligne d'echappement pour un moteur a combustion interne
US20110239631A1 (en) * 2010-04-05 2011-10-06 Caterpillar Inc. Ring Reductant Mixer
GB201100673D0 (en) * 2011-01-15 2011-03-02 Statiflo Internat Ltd Static mixer assembly
ITBO20110533A1 (it) * 2011-09-16 2013-03-17 Magneti Marelli Spa Sistema di scarico di un motore a combustione interna provvisto di un dispositivo di iniezione di un additivo
CN104016375A (zh) * 2012-12-18 2014-09-03 英威达科技公司 使用静态混合器来制造氰化氢的方法
JP5787104B2 (ja) * 2013-02-21 2015-09-30 トヨタ自動車株式会社 分散板及び分散装置
HUE029794T2 (en) 2014-02-21 2017-04-28 Modulo S R L Procedure and apparatus for producing urea mixers for exhaust systems of vehicles with internal combustion engines
DE102014205158A1 (de) 2014-03-19 2015-09-24 Eberspächer Exhaust Technology GmbH & Co. KG Mischer für eine Abgasanlage
DE102014222296A1 (de) * 2014-10-31 2016-05-04 Eberspächer Exhaust Technology GmbH & Co. KG Abgasbehandlungseinrichtung
JP2021071054A (ja) * 2019-10-29 2021-05-06 株式会社豊田自動織機 尿素水分散装置及び尿素水分散装置の取付構造

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EP2098697B1 (de) 2010-09-01
EP2098697A1 (de) 2009-09-09
DE602008002403D1 (de) 2010-10-14

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