EP2098697B2 - Système d'échappement d'un moteur à combustion interne - Google Patents

Système d'échappement d'un moteur à combustion interne 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
Authority
EP
European Patent Office
Prior art keywords
tabs
exhaust system
exhaust
tubular body
exhaust duct
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP20080425083
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German (de)
English (en)
Other versions
EP2098697B1 (fr
EP2098697A1 (fr
Inventor
Massimiliano Gambarotto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Marelli Europe SpA
Original Assignee
Magneti Marelli SpA
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Filing date
Publication date
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Application filed by Magneti Marelli SpA filed Critical Magneti Marelli SpA
Priority to EP20080425083 priority Critical patent/EP2098697B2/fr
Priority to DE602008002403T priority patent/DE602008002403D1/de
Publication of EP2098697A1 publication Critical patent/EP2098697A1/fr
Publication of EP2098697B1 publication Critical patent/EP2098697B1/fr
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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
    • 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. Système d'échappement (1) d'un moteur à combustion interne (2) ; le système d'échappement (1) comprenant :
    un conduit d'échappement (3) qui a son origine dans un collecteur d'échappement (4) du moteur à combustion interne (2) ;
    au moins un système catalytique (7 ; 5) disposé sur le conduit d'échappement (3) ;
    un dispositif de délivrance (8), qui est connecté au conduit d'échappement (3) immédiatement en amont du système catalytique (7 ; 5) pour délivrer un additif dans ledit conduit d'échappement (3) ; et
    au moins un mélangeur statique (9), qui est disposé sur le conduit d'échappement (3) en correspondance avec le dispositif d'échappement (8) est disposé en amont ou en aval du dispositif d'échappement (8), et qui comprend un corps tubulaire (10) qui a un axe central de symétrie et qui comporte deux bords annulaires opposés (12) et au moins un groupe (13) de pattes (14), qui s'étendent vers l'extérieur du corps tubulaire (10) à partir d'un bord annulaire respectif (12) dudit corps tubulaire (10), qui sont disposées à une certaine distance les unes des autres de façon à laisser un espace vide (15) entre deux pattes successives (14), et qui sont en pente du bord annulaire (12) vers l'axe central de symétrie (11) de façon à converger vers ledit axe central de symétrie (11) ;
    le mélangeur statique (9) comprend deux groupes (13) de pattes (14) disposées le long des deux bords annulaires opposés (12) du corps tubulaire (10) ;
    les deux groupes (13) de pattes (14) sont étagés de telle sorte que chaque patte (14) d'un groupe (13) soit longitudinalement alignée le long de l'axe central de symétrie (11) avec un espace vide (15) entre deux pattes successives (14) de l'autre groupe (13) ; et
    le système d'échappement (1) étant caractérisé en ce que le mélangeur statique (9) comprend une pluralité d'étriers de fixation (18) qui s'étendent parallèlement à l'axe central de symétrie (11) à partir d'un bord annulaire (12) du corps tubulaire (10) et sont disposés en correspondance avec l'espace vide (15) entre deux pattes successives (14).
  2. Système d'échappement (1) selon la revendication 1, dans lequel chaque patte (14) du mélangeur statique (9) a sensiblement la forme d'un trapèze isocèle ayant une base plus longue (16) disposée sur le bord annulaire respectif (12) du corps tubulaire (10) et une base plus courte (17) qui est libre.
  3. Système d'échappement (1) selon la revendication 2, dans lequel le rapport entre le diamètre de la circonférence définie par les bases plus longues (16) des pattes (14) et le diamètre de la circonférence définie par les bases plus courtes (17) des pattes (14) est compris entre 2 et 4.
  4. Système d'échappement (1) selon la revendication 3, dans lequel le rapport entre le diamètre de la circonférence définie par les bases plus longues (16) des pattes (14) et le diamètre de la circonférence définie par les bases plus courtes (17) des pattes (14) est d'approximativement 3.
  5. Système d'échappement (1) selon l'une des revendications 1 à 4, dans lequel, en correspondance avec le bord annulaire respectif (12) du corps tubulaire (10), chaque patte (14) s'étend sur l'équivalent d'un espace vide (15) entre deux pattes successives (14).
  6. Système d'échappement (1) selon l'une des revendications 1 à 5, dans lequel chaque patte (14) forme un angle compris entre 30° et 60° avec le corps tubulaire (10).
  7. Système d'échappement (1) selon la revendication 6, dans lequel chaque patte (14) forme un angle d'approximativement 45° avec le corps tubulaire (10).
  8. Système d'échappement (1) selon l'une des revendications 1 à 7, dans lequel chaque groupe (13) comporte entre 3 et 6 pattes (14).
  9. Système d'échappement (1) selon la revendication 8, dans lequel chaque groupe (13) comporte 4 pattes (14).
  10. Système d'échappement (1) selon l'une des revendications 1 à 9, dans lequel le corps tubulaire (10) s'étend longitudinalement le long de l'axe central de symétrie (11) d'au moins 10 mm.
  11. Système d'échappement (1) selon l'une des revendications 1 à 10, dans lequel les étriers de fixation (18) sont soudés ou rivetés à une paroi latérale du conduit d'évacuation (3).
  12. Système d'échappement (1) selon l'une des revendications 1 à 11, dans lequel le système catalytique (7 ; 5) comprend :
    un catalyseur à oxydation (5) disposé sur le conduit d'échappement (3) ; et
    un système catalytique à réduction catalytique sélective (7) disposé sur le conduit d'échappement (3) en aval du catalyseur à oxydation (5) et en aval du dispositif de délivrance (8).
  13. Système d'échappement (1) selon l'une des revendications 1 à 12, dans lequel le système catalytique (7 ; 5) comprend un catalyseur à oxydation (5) disposé sur le conduit d'échappement (3) en aval du dispositif de délivrance (8).
EP20080425083 2008-02-12 2008-02-12 Système d'échappement d'un moteur à combustion interne Ceased EP2098697B2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20080425083 EP2098697B2 (fr) 2008-02-12 2008-02-12 Système d'échappement d'un moteur à combustion interne
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 (fr) 2008-02-12 2008-02-12 Système d'échappement d'un moteur à combustion interne

Publications (3)

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

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ID=39638772

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20080425083 Ceased EP2098697B2 (fr) 2008-02-12 2008-02-12 Système d'échappement d'un moteur à combustion interne

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Country Link
EP (1) EP2098697B2 (fr)
DE (1) DE602008002403D1 (fr)

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FR2956155B1 (fr) * 2010-02-05 2013-09-13 Peugeot Citroen Automobiles Sa Ligne d'echappement pour un moteur a combustion interne
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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
WO2014099567A1 (fr) * 2012-12-18 2014-06-26 Invista Technologies S.A R. L. Processus de production de cyanure d'hydrogène à l'aide d'un mélangeur statique
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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
US11732626B2 (en) * 2021-12-28 2023-08-22 Honda Motor Co., Ltd. Mixer and mobile body

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

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