EP2476877B1 - Mixeur statique pour gaz d'échappement et son procédé de fabrication - Google Patents

Mixeur statique pour gaz d'échappement et son procédé de fabrication Download PDF

Info

Publication number
EP2476877B1
EP2476877B1 EP11194926.9A EP11194926A EP2476877B1 EP 2476877 B1 EP2476877 B1 EP 2476877B1 EP 11194926 A EP11194926 A EP 11194926A EP 2476877 B1 EP2476877 B1 EP 2476877B1
Authority
EP
European Patent Office
Prior art keywords
vanes
mixer
vane
proximal
mixer according
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.)
Active
Application number
EP11194926.9A
Other languages
German (de)
English (en)
Other versions
EP2476877A1 (fr
Inventor
Pier Mario Cornaglia
Giorgio Villata
Walter Leone
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.)
Officine Metallurgiche G Cornaglia SpA
Original Assignee
Officine Metallurgiche G Cornaglia SpA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Officine Metallurgiche G Cornaglia SpA filed Critical Officine Metallurgiche G Cornaglia SpA
Publication of EP2476877A1 publication Critical patent/EP2476877A1/fr
Application granted granted Critical
Publication of EP2476877B1 publication Critical patent/EP2476877B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • B01F25/4314—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor with helical baffles
    • 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
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2215/00—Auxiliary or complementary information in relation with mixing
    • B01F2215/04—Technical information in relation with mixing
    • B01F2215/0413—Numerical information
    • B01F2215/0418—Geometrical information
    • B01F2215/0422—Numerical values of angles
    • 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

Definitions

  • the present invention relates to a static mixer for the treatment of exhaust gases and to the manufacturing method thereof.
  • the invention relates to a static mixer for the treatment of exhaust gases of internal combustion engines, which mixer can be incorporated in a system for the selective catalytic reduction (SCR) of nitrogen oxides.
  • SCR selective catalytic reduction
  • Static mixers are commonly used in order to promote mixing of the exhaust gases with the reducing agent, introduced in gaseous or liquid state into the exhaust systems of the internal combustion engines.
  • the static mixer is mainly aimed at promoting the formation of a highly homogeneous mixture and causing the reducing agent introduced into the exhaust system to be as much as possible vaporised.
  • static mixers are at present produced, which comprise a set of vanes with various orientations inside the duct where the exhaust gases and the reducing agent mixture flow.
  • the vanes are generally associated with an annular frame intended to adhere to the internal walls of the duct housing the mixer, which generally is transversally arranged in the duct so that the exhaust gas flow is intercepted by said vanes.
  • the static mixer promotes mixing of the gases with the reducing agent, generally thanks to the increase of the turbulence phenomenon within the exhaust gas flow.
  • the surface of a mixer can cause condensation of the reducing mixture, with the consequent formation of a liquid film that adheres to the vanes, thereby causing a reduction in the effectiveness of the same mixer.
  • the first phenomenon is the one determined by excessive pressure increases in the exhaust system housing the mixer.
  • the second phenomenon is the one determined by the reduction of the mixing capability, resulting from the formation of condensate of the reducing agent onto the mixer surfaces.
  • FR 2 937 692 A3 on which the preamble of claim 1 is based discloses a further example of static mixer comprising an annular support portion and a plurality of substantially coplanar radial vanes that are arranged radially with their rear portion associated with said support portion and the front portion converging towards the centre of the mixer, whereby the vanes have a shape twisted around the longitudinal axis of the vanes.
  • static mixers having twisted radial vanes are disclosed in DE 35 36 315 A1 and EP 2 022 956 A2 .
  • a first advantage of the invention results from the provision of a plurality of radial vanes, arranged inside an annular perimeter, converging towards the centre of the mixer and having a shape twisted around the longitudinal axis of the vanes.
  • Another advantage of the invention results from the feature that the width of the axial projection of the vane surface on the plane in which the vanes lie is greater than the thickness of the vanes.
  • such a condition is met over the whole vane length.
  • a further advantage of the invention results from the feature that the vanes have a twisted shape of which the twist angle is preferably different from 90°. Indeed, thanks to such an arrangement, it is possible to obtain an effective mixing effect due to the turbulence which is created downstream the mixer, without causing an excessive pressure increase in the duct along which the exhaust gases flow.
  • Still another advantage of the invention results from the provision, in the mixer, of a free central portion, that is, a portion having no obstacles for the free flow of the exhaust gases, towards which the radial vanes converge. Thanks to such a free central portion and to the twisted shape of the vanes, it is possible to obtain an effective mixing effect of the exhaust gases with the reducing agent mixture. Such a mixing effect is promoted by the presence of such a central hole, which on the other hand contributes to preventing an excessive increase of the pressure due to the provision of the mixer. Indeed, in correspondence of the central hole, an increase in the gas speed and a consequent intense forward thrust of the gases occur, resulting in an advantageous turbulent motion downstream the mixer.
  • Still a further advantage of the invention results from the possibility of manufacturing the mixer by means of a succession of simple cutting and twisting and/or bending operations.
  • a further, but not the last advantage of the invention results from the possibility of manufacturing the mixer from planar bodies as well as from tubular bodies.
  • the static mixer for the treatment of exhaust gases according to the invention has been generally denoted by reference numeral 11.
  • Mixer 11 includes an annular support portion 13 and a plurality of substantially coplanar radial vanes 15, which are radially arranged and have their rear ends or bases 17 associated with said support portion 13 and their front ends or tips 19 converging towards centre "C" of the mixer.
  • the rear end or base 17 is connected to said support portion 13 as shown in the accompanying drawings.
  • the rear end or base 17 and the support portion 13 are made as a single piece, as it will be disclosed in detail hereinafter.
  • tips 19 of vanes 15 encircle a central portion 21 of the mixer.
  • Said portion 21, which is substantially circular in the illustrated example, is free, that is, it is not occupied by the vanes or other mixer parts and it defines a passageway, free from interferences, for the exhaust gases.
  • vanes 15 have a shape twisted around longitudinal axis "R" of the vanes, i.e. the axis passing through centre "C” of the mixer, in the direction indicated by arrow "T".
  • Annular support portion 13 includes a crown 13a, preferably closed to form a ring, which in the illustrated example defines a circular internal perimeter 13b and a circular external perimeter 13c for mixer 11.
  • the internal perimeter13b and/or the external perimeter 13c have a shape different from the circular one, for instance an octagonal, hexagonal, square or rectangular shape.
  • vanes 15 may be directly associated with the inner wall of the duct of the exhaust system housing the mixer.
  • vanes 15 are angularly spaced apart in regular manner along internal perimeter 13b of annular support portion 13.
  • twelve radial vanes 15 are provided.
  • the optimal number of vanes can however be chosen depending on the characteristics of the exhaust system into which the mixer is incorporated, and generally any number of vanes can be provided.
  • the number of vanes is different from twelve.
  • a number of vanes ranging from eight to sixteen has proved to provide the best performance.
  • the diameter of circular central portion 21 is about 1/4 the diameter of internal perimeter 13b of the mixer.
  • vanes 15 have a shape twisted around longitudinal axis "R" of the vanes in such a way that the width of the axial projection of the vane surfaces on the plane in which the vanes lie is greater than the thickness of the vanes over substantially the whole vane length.
  • twisting the vanes by an angle different from 90°.
  • the best results, as far as the mixing is concerned, have been achieved by means of a twist angle of the vanes indicatively ranging from 70 to 150°.
  • said twist angle exceeds 90° and more preferably is of about 110°.
  • mixer 11 has a region occupied by a plurality of vanes 15 intercepting the exhaust gases and the reducing agent mixture, and a free region formed by the zones included between the vanes and denoted by reference numeral 23, as well as by central portion 21.
  • the area of the surface of the projection of the solid portions of the mixer, that is, the portions axially intercepting the flow of the gases and the reducing agent mixture, on the plane in which vanes 15 lie is in the whole about one half the area of the empty zones, that is, the zones left free for the flow of said gases and reducing mixture.
  • a unit 111 for the treatment of the exhaust gases of an internal combustion engine where SCR technology is used.
  • Said unit 111 comprises a set of ducts for the exhaust gases housed within a casing 113.
  • Static mixer 11 according to the invention is housed in one of the ducts, denoted in the Figure by reference numeral 115, in which the exhaust gases flow in the direction indicated by arrow "F".
  • mixer 11 is transversally arranged within duct 115, immediately downstream region 117 where the reducing agent mixture is introduced.
  • the reducing agent mixture is introduced by injection by means 119 preferably including a nozzle or a suitable valve, which means are axially arranged at the beginning of duct 115 in the direction of the exhaust gas flow.
  • Said duct 115 further comprises, between means 119 and mixer 11, a radially oriented exhaust gas inlet 121, formed by a corresponding portion of duct 115 provided with radial holes 123.
  • exhaust gases radially enter duct 115 and they are intercepted by the reducing agent arriving in axial direction, that is at 90° with respect to the gas inlet direction.
  • the exhaust gas flow arrives in axial direction, i.e. deflected by about 90° with respect to the inlet direction into duct 115, at mixer 11, which substantially occupies the whole cross section of duct 115.
  • mixer 11 can be manufactured by means of a succession of simple mechanical cutting and twisting operations.
  • the mixer is obtained from a sheet metal body having a thickness preferably ranging from 0.8 to 2.0 mm, and more preferably of 1.5 mm. Vanes 15 will have therefore a laminar consistence.
  • the mixer could also be manufactured by other mechanical workings, for instance milling or electron discharge machining.
  • the machining of a flat laminar metal body for instance a foil of sheet metal, is performed.
  • the machining of a tubular metal body is performed.
  • FIG. 6 and 7 there is shown the intermediate product obtained in accordance with the first embodiment of the method of manufacturing the mixer.
  • Said intermediate product comprises a flat disc 11' obtained by cutting or shearing a flat foil sheet metal. Vanes 15 obtained in this way and shown in the Figures will be subsequently twisted around their longitudinal axis "R", for instance by means of a robotised manipulator, thereby obtaining the final product consisting of mixer 11 disclosed with reference to Figs. 1 to 4 .
  • FIG. 8 there is shown the intermediate product 11" obtained in accordance with the second embodiment of the method of manufacturing the mixer.
  • Said intermediate product comprises a tubular body on which vanes 15 are obtained by cutting or shearing.
  • vanes 15 are arranged with their longitudinal axes "R" along the generatrices of the cylinder defining said tubular body.
  • a bending at 90° of the vanes in correspondence of their bases 17 is performed to bring the vanes into a common plane.
  • Said vanes 15 are subsequently twisted around their longitudinal axis "R", for instance by means of a robotised manipulator, thereby obtaining the final product consisting of mixer 11 disclosed with reference to Figs. 1 to 4 .
  • the step of twisting vanes 15 can possibly precede the step of bending at 90°.
  • the method according to the invention comprises the steps of:
  • FIG. 9 shows an enlarged detail of one of the vanes shown in Fig. 7 , generally corresponding however to any of the vanes in intermediate products 11' and 11", that is the vanes shown in Figs. 6 , 7 , 8 .
  • Said vanes 15, before twisting has a rear portion 15a, close to base 17, with a carved shape, i.e. narrowing along the sides according a curved profile, and a tapered front portion 15b close to tip 19, i.e. a portion having a width progressively decreasing towards tip 19.
  • a connecting intermediate portion 15c is defined between said rear portion 15a and said front portion 15b.
  • the width of the projection of said connecting portion on the plane in which the mixer vanes lie will substantially correspond with the maximum width of vane 15.
  • vanes 15 are made so that their shape is twisted, in clockwise or counterclockwise direction, along their longitudinal axis "R", substantially in correspondence of the narrowed zone of carved portion 15a.

Landscapes

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

Claims (10)

  1. Mélangeur statique (11) pour le traitement des gaz d'échappement, comprenant une partie de support annulaire (13) et une pluralité d'aubes radiales (15) qui sont disposées radialement avec l'extrémité arrière ou base (17) associée à ladite partie de support (13) et l'extrémité avant ou pointe (19) convergente vers le centre ("C") du mélangeur, caractérisé en ce que les aubes (15) ont une forme tordue autour de l'axe longitudinal ("R") des aubes passant par le centre ("C") du mélangeur et en ce que ledit angle de torsion de la forme des aubes est supérieur à 90° et inférieur à 150°.
  2. Mélangeur selon la revendication 1, dans lequel les aubes ont une partie arrière cintrée (15a) proche de la base de l'aube (17), et une partie avant fuselée (15b) proche de la pointe de l'aube (19).
  3. Mélangeur selon la revendication 1 ou 2, dans lequel les pointes (19) des aubes (15) entourent une partie centrale libre (21) du mélangeur.
  4. Mélangeur selon la revendication 1 ou 2 ou 3, dans lequel la largeur de la projection axiale de la surface des aubes sur le plan dans lequel les aubes (15) se trouvent est plus grand que l'épaisseur des aubes mêmes.
  5. Mélangeur selon la revendication 1, dans lequel ledit angle est d'environ 110°.
  6. Mélangeur selon l'une quelconque des revendications précédentes, dans lequel les aubes sont espacées angulairement de manière régulière.
  7. Mélangeur selon l'une quelconque des revendications précédentes, dans lequel huit à seize aubes sont prévues.
  8. Procédé de fabrication d'un mélangeur statique selon l'une quelconque des revendications 1 à 7, comportant les étapes consistant à:
    - fournir un corps laminaire en métal (11'; 11");
    - former sur ledit corps une pluralité d'aubes radiales (15), disposées radialement et sensiblement coplanaires;
    - tordre les aubes (15) autour de leur axe longitudinal ("R") passant par le centre ("C") du mélangeur, ledit angle de torsion de la forme des aubes étant supérieur à 90° et inférieur à 150°, en obtenant ainsi le mélangeur.
  9. Procédé selon la revendication 8, comportant une étape consistant à courber les aubes à 90° au niveau de leur base (17), de façon à amener les aubes dans un plan commun.
  10. Procédé selon la revendication 8 ou 9, dans lequel, avant d'être tordues, les aubes ont une partie arrière cintrée (15a) proche de la base (17) des aubes et une partie avant fuselée (15b) proche de la pointe (19) des aubes, une partie intermédiaire de connexion (15c) étant définie entre ladite partie arrière et ladite partie avant, la largeur de la projection axiale de ladite partie de connexion sur le plan dans lequel les aubes de mélangeur se trouvent étant sensiblement correspondante à la largeur maximale de l'aube (15).
EP11194926.9A 2010-12-23 2011-12-21 Mixeur statique pour gaz d'échappement et son procédé de fabrication Active EP2476877B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITTO2010A001057A IT1403427B1 (it) 2010-12-23 2010-12-23 Miscelatore statico per il trattamento di gas di scarico e suo metodo di fabbricazione

Publications (2)

Publication Number Publication Date
EP2476877A1 EP2476877A1 (fr) 2012-07-18
EP2476877B1 true EP2476877B1 (fr) 2015-09-09

Family

ID=43737445

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11194926.9A Active EP2476877B1 (fr) 2010-12-23 2011-12-21 Mixeur statique pour gaz d'échappement et son procédé de fabrication

Country Status (2)

Country Link
EP (1) EP2476877B1 (fr)
IT (1) IT1403427B1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6224569B2 (ja) * 2014-10-22 2017-11-01 トヨタ自動車株式会社 分散板
GB2550173A (en) * 2016-05-11 2017-11-15 Perkins Engines Co Ltd Mixer for after-treatment system
CN108167051A (zh) * 2017-12-23 2018-06-15 无锡威孚力达催化净化器有限责任公司 一种scr后处理混合器结构
CN112246102A (zh) * 2020-11-03 2021-01-22 艾克赛尔能源科技江苏有限公司 混合装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3536315A1 (de) * 1985-10-11 1987-04-16 Sueddeutsche Kuehler Behr Katalysatoranordnung zur reinigung von abgasen, insbesondere einer brennkraftmaschine
DE102006024778B3 (de) 2006-03-02 2007-07-19 J. Eberspächer GmbH & Co. KG Statischer Mischer und Abgasbehandlungseinrichtung
US7533520B2 (en) 2006-04-24 2009-05-19 Fleetguard, Inc. Exhaust aftertreatment mixer with stamped muffler flange
DE102007035226A1 (de) * 2007-07-25 2009-01-29 J. Eberspächer GmbH & Co. KG Strömungsleiteinrichtung sowie damit ausgestattete Abgasanlage
US8141353B2 (en) 2008-04-25 2012-03-27 Tenneco Automotive Operating Company Inc. Exhaust gas additive/treatment system and mixer for use therein
US8397495B2 (en) 2008-06-26 2013-03-19 Tenneco Automotive Operating Company Inc. Exhaust gas additive/treatment system and mixer for use therein
FR2937692A3 (fr) * 2008-10-27 2010-04-30 Renault Sas Organe de melange pour vehicule automobile

Also Published As

Publication number Publication date
EP2476877A1 (fr) 2012-07-18
IT1403427B1 (it) 2013-10-17
ITTO20101057A1 (it) 2012-06-24

Similar Documents

Publication Publication Date Title
EP2721265B1 (fr) Mélangeur statique pour le traitement des gaz d'échappement et son procédé de fabrication
EP2476877B1 (fr) Mixeur statique pour gaz d'échappement et son procédé de fabrication
EP3826756B1 (fr) Mélangeur statique pour conduits de gaz d'échappement de moteurs à combustion interne et unité d'échappement incorporant le mélangeur
US6745562B2 (en) Diverter for catalytic converter
EP0991860B1 (fr) Melangeur/ejecteur a plusieurs etages supprimant les rayonnements infrarouges
US7581482B1 (en) Supersonic turning vane
US5992140A (en) Exhaust nozzle for suppressing infrared radiation
EP2126321B1 (fr) Turbine à gaz présentant une couronne directrice et un mélangeur
JP2008280999A (ja) 内燃機関の排気ガスシステムに流動可能な添加物を配給する装置
JP2007046598A (ja) ノズル及びガスタービンエンジン
JP2002139220A5 (fr)
JP6306306B2 (ja) 拡散板及びその製造方法
US10352220B2 (en) Exhaust gas stirring device
GB2356897A (en) By-pass engine nozzle arrangment for reducing noise
US20150198073A1 (en) Exhaust aftertreatment system with in-elbow reductant injection
JP2006200445A (ja) 排気システム
JP6154185B2 (ja) 排気攪拌装置
EP1743090A2 (fr) Organe de derivation pour convertisseur catalytique
JP6916772B2 (ja) 排気攪拌装置
SE1651253A1 (en) Axially distributed mixing device
EP2388452A1 (fr) Dispositif de dosage de réactif
JP2020051396A (ja) テールパイプ
CN111520221A (zh) 尾管

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

RIC1 Information provided on ipc code assigned before grant

Ipc: F01N 3/28 20060101AFI20120625BHEP

17P Request for examination filed

Effective date: 20121204

17Q First examination report despatched

Effective date: 20130725

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20150323

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 748320

Country of ref document: AT

Kind code of ref document: T

Effective date: 20150915

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602011019551

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20150909

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151210

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151209

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 748320

Country of ref document: AT

Kind code of ref document: T

Effective date: 20150909

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160109

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151231

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160111

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602011019551

Country of ref document: DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602011019551

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151221

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

26N No opposition filed

Effective date: 20160610

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20151221

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20160831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151231

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160701

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151221

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151221

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20111221

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20231221

Year of fee payment: 13