EP2795077A1 - Dispositif de retraitement des gaz d'échappement avec une unité de dosage pour un produit de retraitement des gaz d'échappement - Google Patents

Dispositif de retraitement des gaz d'échappement avec une unité de dosage pour un produit de retraitement des gaz d'échappement

Info

Publication number
EP2795077A1
EP2795077A1 EP12812624.0A EP12812624A EP2795077A1 EP 2795077 A1 EP2795077 A1 EP 2795077A1 EP 12812624 A EP12812624 A EP 12812624A EP 2795077 A1 EP2795077 A1 EP 2795077A1
Authority
EP
European Patent Office
Prior art keywords
exhaust pipe
exhaust
exhaust gas
metering
cooling jacket
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.)
Withdrawn
Application number
EP12812624.0A
Other languages
German (de)
English (en)
Inventor
Jan Hodgson
Sven Schepers
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.)
Continental Automotive GmbH
Original Assignee
Emitec Gesellschaft fuer Emissionstechnologie mbH
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 Emitec Gesellschaft fuer Emissionstechnologie mbH filed Critical Emitec Gesellschaft fuer Emissionstechnologie mbH
Publication of EP2795077A1 publication Critical patent/EP2795077A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
    • F01N3/2046—Periodically cooling catalytic reactors
    • 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
    • F01N3/2066—Selective catalytic reduction [SCR]
    • 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
    • F01N3/36—Arrangements for supply of additional fuel
    • 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
    • F01N2610/11—Adding substances to exhaust gases the substance or part of the dosing system being cooled
    • 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
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits
    • F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • 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

Definitions

  • the present invention relates to a device for after-treatment of an exhaust gas flowing through an exhaust gas line of an internal combustion engine with a dosing unit for adding an exhaust gas aftertreatment agent into the exhaust gas line.
  • exhaust aftertreatment devices for cleaning the exhaust gases of (mobile) internal combustion engines are increasingly used those in which the exhaust gas of the internal combustion engine is cleaned with the aid of the exhaust gas supplied exhaust aftertreatment agent.
  • Mobile internal combustion engines are used, for example, to drive motor vehicles.
  • the method of selective catalytic reduction is known, in which the exhaust gases of an internal combustion engine are cleaned of nitrogen oxide compounds.
  • a nitrogen oxide reducing exhaust gas aftertreatment agent is supplied.
  • an exhaust gas aftertreatment agent is, for example, ammonia.
  • Ammonia is not normally stored directly in motor vehicles, but in the form of a precursor medium (liquid or solid), also called a reducing agent precursor.
  • this reducing agent precursor is converted into ammonia, the actual reducing agent, in a dedicated reactor or in the exhaust aftertreatment device.
  • a reducing agent precursor is, for example, a urea-water solution, which is available under the trade name AdBlue ®.
  • exhaust gas aftertreatment agent is supplied via a metering unit of the exhaust pipe, wherein the exhaust gas aftertreatment agent is supplied in liquid or gaseous form and also mixed with carrier gases.
  • the dosing unit can be activated passively and / or actively.
  • the dosing unit may comprise a valve, an injector, a metering pump or the like.
  • the exhaust gas flowing through the exhaust pipe can reach very high temperatures, so that high demands are placed on the dosing unit and also on the exhaust gas aftertreatment agent in terms of durability and stability.
  • an (active) cooling of the dosing unit may be provided, for example in the manner of water cooling.
  • supplied exhaust aftertreatment agent is reflected on a (temporarily) cooled, so comparatively cold, surface of the metering unit. Possibly. can it here (with a slight increase in temperature, for., in the range of 70 to 100 ° C) to form deposits that are difficult to remove, and the flow conditions to influence the currents cause the exhaust treatment by dosing can.
  • the dosing unit can gradually become clogged by the deposits. Furthermore, due to the high temperature gradient between the cooling of the dosing unit and the exhaust-carrying exhaust gas line, a material fatigue (eg the exhaust gas line) may occur, in particular in the region of the connection of the exhaust gas line to the dosing unit.
  • a material fatigue eg the exhaust gas line
  • the device has a metering unit, which is arranged in an opening of an exhaust pipe of the exhaust pipe and which is set up for the addition of an exhaust gas aftertreatment agent in the exhaust pipe.
  • the dosing unit is surrounded by a cooling jacket, via which the dosing unit is fixed in the opening of the exhaust pipe.
  • the cooling jacket is at least partially surrounded by a space that is bounded at least by the cooling jacket, the exhaust pipe and a cover plate.
  • the cover plate is connected to the exhaust pipe and spaced by a gap from the cooling jacket or from the metering unit.
  • the dosing unit comprises a part of a line through which an exhaust gas aftertreatment agent can be transferred, starting from a tank, into the exhaust gas line for the treatment of the exhaust gas.
  • the metering unit has towards the exhaust pipe to a metering, from which exits the exhaust aftertreatment agent from the metering unit.
  • the dosing unit is designed in particular in the manner of a (controllable or selectively controllable) injector. Most preferably, the dosing unit is designed and set up for adding a liquid exhaust aftertreatment agent. It is preferred that the exhaust gas is dispensed (almost) completely liquid at the metering orifice. The addition may also be done with the assistance of a carrier gas (eg pressurized air), but this is not essential for this application.
  • a carrier gas eg pressurized air
  • the metering unit is surrounded by a cooling jacket, wherein this is formed in particular with the outer wall of the metering unit and a further provided, enclosing cooling jacket wall, so that a cooling medium can flow through the cooling jacket.
  • the cooling jacket wall is in particular connected to the dosing unit via a connection, so that the dosing unit can be fixed in the opening of the exhaust pipe via the cooling jacket wall. This fixation takes place in particular via a connection produced by welding. But it is also possible that the metering unit is connected via a thread designed as a connection with the opening of the exhaust pipe.
  • connection between the cooling jacket wall and the exhaust pipe is normally exposed to a high temperature gradient (between the hot exhaust gas in the exhaust pipe and the cooling medium in the cooling jacket), so that a special material stress of the connection, the cooling jacket wall and / or the exhaust pipe can occur in this area.
  • this connection is separated by a cover plate from the exhaust pipe.
  • the cover plate extends in particular starting from the exhaust pipe to the metering unit.
  • the cover plate covers a partial section of the exhaust pipe, in particular a circumferential surrounding section around the opening.
  • the cover plate in particular a space is formed, which is connected (only) via a (narrow) gap with the exhaust gas-carrying exhaust pipe.
  • the room is a kind of temperature barrier, because the gas contained therein conducts heat only poorly.
  • the gap is formed between the cover plate and the cooling jacket or between cover plate and metering unit.
  • the gap is (to a limited extent) permeable to the exhaust gas.
  • the gap is preferably made so narrow that an at least flow-calm zone is formed in the space thus formed. This ensures that the exhaust gas from the exhaust pipe does not constantly flow through the volume of the room or flushes.
  • the "trapped" quantity of exhaust gas or air present in the space therefore does not predominantly have the high temperature of the exhaust gas flowing through the exhaust gas pipe, in particular the volume trapped by the space is heated mainly by heat conduction
  • the gap is thus a gap which is permeable to the exhaust gas and which is not closed, for example by means of a seal
  • the exchange of exhaust gas between the space and the exhaust pipe is comparatively small so that, on the one hand, the cooling jacket is at least partially separated from the flowing exhaust gas in the exhaust pipe and, on the other hand, the connection between the cooling jacket and the exhaust pipe is not exposed to the exhaust gas in the exhaust pipe assume that lies between the temperature of the cooling medium of the cooling jacket and the flowing exhaust gas in the exhaust pipe.
  • the temperature gradient in the environment of the dosing unit decreases (on average). Accordingly, the risk of the formation of deposits on the exhaust pipe, the cooling jacket or the cover plate is reduced.
  • the metering unit has a metering opening, wherein the metering opening and the cover plate are flush with each other toward the exhaust pipe.
  • the metering opening and the cover plate lie in the region of the metering opening in a common plane, so that a flush closure towards the exhaust gas line is ensured. Due to the flush In particular, it is avoided that turbulences develop in this area of the exhaust pipe, which could lead to the exhaust aftertreatment agent being thrown against the cooled surfaces of the metering unit and / or the cover plate. Occurrence of the exhaust aftertreatment agent on these cold surfaces can cause deposits of exhaust aftertreatment agent.
  • the cover plate is at least predominantly located in a plane which extends perpendicularly through the metering opening. It is particularly preferred that the exhaust pipe in the environment outside the cover plate is in this plane, so that a turbulence-poor overflow of exhaust pipe, cover plate and metering occurs.
  • the cover plate is integrally connected to the exhaust pipe.
  • "Bonded” compounds are all compounds in which the connection partners are held together by atomic or molecular forces.They are at the same time non-detachable compounds that can only be separated by destroying the connection means.A cohesive connection is realized in particular via a welded connection.
  • the dosing unit and the cooling jacket, and in particular the connection between the cooling jacket and the opening of the exhaust pipe, are preferably arranged separately from the exhaust pipe by the cover sheet.
  • the cooling jacket of the dosing unit is a cooling medium or the exhaust aftertreatment flowed through.
  • a cooling medium can here z.
  • water can be used.
  • connection lines for (regulated) supply and discharge of the cooling medium are provided either to a water cycle or the pipe system of the exhaust aftertreatment agent.
  • the gap (between the cover plate and the cooling jacket or between the cover plate and the dosing unit) has a width of at least 0.5 mm [millimeter] and at most 2.5 mm.
  • the metering opening of the metering unit extends at least 2 mm [millimeters] further than the cooling jacket into the exhaust pipe. It is also preferred that the metering orifice is formed protruding a maximum of 10 mm in the exhaust pipe. In particular, therefore, the cooling jacket or the cooling jacket wall is set back relative to the metering opening and the cover plate. The metering opening itself is not cooled by the cooling jacket, so that the metering opening is heated more strongly by the more intensive contact with the flowing exhaust gas in the exhaust pipe.
  • the space comprises a volume in a range of 250 mm 3 [cubic millimeters] to 5,000 mm 3 and in particular in a range of 250 mm 3 to 1,500 mm 3 . In particular, a correspondingly sufficient heat insulation is ensured by such a volume of space.
  • a motor vehicle at least comprising an internal combustion engine, an exhaust pipe and a device according to the invention for the aftertreatment of an exhaust gas.
  • the device is used in particular for adding a liquid reducing agent or reducing agent precursor.
  • the cooling is preferably carried out with a water cycle.
  • the dosing unit is preferably designed as an (actively controllable) injector.
  • at least one suitable catalyst is provided downstream of the dosing unit for realizing the SCR method in the flow direction, such as, for example, As a hydrolysis catalyst and / or an SCR catalyst.
  • a mixer or a baffle arrangement may be provided in the exhaust gas line in order to achieve as complete as possible a distribution of the exhaust gas aftertreatment agent in the exhaust gas line before reaching the catalysts.
  • FIGS. show particularly preferred embodiments, to which the invention is not limited. Identical objects are provided in the figures with the same reference numerals. In particular, it should be noted that the figures and in particular the illustrated proportions are shown only schematically. Show it:
  • Fig. 1 a motor vehicle with a device
  • FIG. 2 shows a further embodiment of a device; and 3 shows yet another embodiment of a device.
  • FIG. 1 shows a motor vehicle 16 with an internal combustion engine 4, an exhaust pipe 2 and a device 1.
  • An exhaust gas 3 flows through the exhaust pipe 2 from the internal combustion engine 4.
  • an exhaust aftertreatment unit 18 eg an SCR catalyst
  • a metering unit 5 is arranged in an opening 6 of the exhaust pipe 7.
  • the exhaust pipe 7, the cover plate 11 and the metering opening 13 of the metering unit 5 are flush (lie in the environment substantially in a common plane).
  • an exhaust aftertreatment agent 8 is introduced into the exhaust pipe 2.
  • the metering unit 5 is fluidically connected to a tank 17 for the exhaust gas aftertreatment agent 8.
  • a pump 22 conveys the exhaust gas aftertreatment agent 8 from the tank 17 to the metering unit 5.
  • the exhaust gas line 2 is flowed through by an exhaust gas 3.
  • an opening 6 is provided in the exhaust pipe 7 of the exhaust pipe 2.
  • the metering unit 5 extends through this opening 6.
  • the metering unit 5 is surrounded by a cooling jacket 9, a cooling medium 15 circulating in the cooling jacket 9 between the metering unit 5 and the cooling jacket wall 19.
  • the exhaust pipe 7 is connected to the cooling jacket 9 or to the cooling jacket wall 19 via a connection 20. By this connection 20, an outlet of the exhaust gas 3 from the exhaust pipe 2 is prevented.
  • the device 1 further comprises a cover plate 11 which is connected via a connection 20 with the exhaust pipe 7.
  • the cover plate 11 extends from the exhaust pipe 7 to the dosing unit 5 or towards the cooling jacket 9.
  • the cover plate 11 forms in the region of the dosing unit 5 a flush conclusion with the metering 13 of the dosing unit 5.
  • the cover plate 11 forms a gap 12 with a width 14 between the cover plate 11 and the cooling jacket 9.
  • cooling jacket 9 ordeman- 19 and the exhaust pipe 7, a space 10 is correspondingly formed, which is fluidically connected via the gap 12 with the exhaust pipe 2.
  • the space 10 has a volume 21, which is heated mainly by heat conduction. An exchange of existing in the space 10 exhaust gas 3 (or air) with the exhaust gas 3 in the exhaust pipe 2 is only via the gap 12. The heating of the present in the volume 21 exhaust gas 3 (or air) is therefore only in a small Measures about the exchange of exhaust 3 (air).
  • an exhaust aftertreatment agent 8 is transferred through the metering opening 13 in the exhaust pipe 2.
  • Fig. 3 shows a further embodiment of the device 1.
  • the cooling jacket 9 is set back relative to the metering opening 13.
  • the gap 12 with the width 14 is formed correspondingly between cover plate 11 and metering unit 5.
  • the space 10 is correspondingly formed by cover plate 11, exhaust pipe 7, cooling jacket 9 (or cooling jacket wall 19) and metering unit 5.
  • the cover plate 11 forms a flush closure with the dosing opening 13 of the dosing unit 5.
  • the tip of the dosing unit 5 is thus not cooled as strongly as in the first exemplary embodiment. Deposits of residues of the exhaust aftertreatment agent 8 thus form to a lesser extent, since the temperature gradient between the metering unit 5 and the exhaust gas 3 in the exhaust pipe 2 is lower.
  • the invention has solved the technical problems described in connection with the prior art.
  • a particularly cost-effective, technically simple and effective device has been specified, by means of which the temperature load on the connection between exhaust pipe and metering unit can be reduced and / or deposits of the exhaust gas aftertreatment agent in the area of the metering unit can be prevented.

Landscapes

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

Abstract

L'invention concerne un dispositif (1) de retraitement d'un gaz d'échappement (3) d'un moteur à combustion interne (4) circulant au travers d'une conduite de gaz d'échappement (2). Ce dispositif comprend au moins une unité de dosage (5) qui est disposée dans un orifice (6) d'une buse d'échappement (7) de la conduite de gaz d'échappement (2) et qui sert à ajouter un produit de retraitement des gaz d'échappement (8) dans la conduite des gaz d'échappement (2) ; l'unité de dosage (5) étant entourée d'une gaine de refroidissement (9), par laquelle l'unité de dosage (5) est fixée dans l'orifice (6) de la buse d'échappement (7) ; la gaine de refroidissement (9) étant entourée au moins partiellement d'un espace (10) qui est limité au moins par la gaine de refroidissement (9), la buse d'échappement (7) et un écran de protection (11) ; ledit écran de protection (11) étant relié à la buse d'échappement (7) et écarté de la gaine de refroidissement (9) ou de l'unité de dosage (5) par une fente (12).
EP12812624.0A 2011-12-23 2012-12-20 Dispositif de retraitement des gaz d'échappement avec une unité de dosage pour un produit de retraitement des gaz d'échappement Withdrawn EP2795077A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011122286A DE102011122286A1 (de) 2011-12-23 2011-12-23 Vorrichtung zur Abgasnachbehandlung mit einer Dosiereinheit für ein Abgasnachbehandlungsmittel
PCT/EP2012/076333 WO2013092829A1 (fr) 2011-12-23 2012-12-20 Dispositif de retraitement des gaz d'échappement avec une unité de dosage pour un produit de retraitement des gaz d'échappement

Publications (1)

Publication Number Publication Date
EP2795077A1 true EP2795077A1 (fr) 2014-10-29

Family

ID=47520970

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12812624.0A Withdrawn EP2795077A1 (fr) 2011-12-23 2012-12-20 Dispositif de retraitement des gaz d'échappement avec une unité de dosage pour un produit de retraitement des gaz d'échappement

Country Status (8)

Country Link
US (1) US9261000B2 (fr)
EP (1) EP2795077A1 (fr)
JP (1) JP2015502490A (fr)
KR (1) KR101631395B1 (fr)
CN (1) CN104040128A (fr)
DE (1) DE102011122286A1 (fr)
RU (1) RU2014130138A (fr)
WO (1) WO2013092829A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9719402B2 (en) * 2015-09-18 2017-08-01 Ford Global Technologies, Llc Exhaust runner collar
DE102015016244A1 (de) * 2015-12-16 2017-06-22 Albonair Gmbh Hitzeresistente Reduktionsmitteleinspritzdüse
JP6939129B2 (ja) * 2017-06-21 2021-09-22 株式会社Ｓｏｋｅｎ 尿素水噴射装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10332114A1 (de) * 2003-07-09 2005-01-27 Robert Bosch Gmbh Gekühlte Vorrichtung zur Dosierung von Reduktionsmittel zum Abgas eines Verbrennungsmotors
DE102006053804B4 (de) * 2006-11-15 2018-04-19 Robert Bosch Gmbh Flanschverbindung
DE102006061730A1 (de) * 2006-12-28 2008-07-03 Robert Bosch Gmbh SCR-Injektionseinrichtung
DE102007031817A1 (de) * 2007-07-07 2009-01-08 Eberspächer Unna GmbH & Co. KG Reduktionsmitteleinspritzvorrichtung
JP4867923B2 (ja) * 2008-01-28 2012-02-01 株式会社デンソー 噴射弁の搭載構造
JP2009174486A (ja) * 2008-01-28 2009-08-06 Denso Corp 噴射弁の搭載構造
DE102008040476C5 (de) * 2008-07-16 2020-02-13 Faurecia Abgastechnik Gmbh Injektionsvorrichtung für die Abgasanlage eines Kraftfahrzeugs
DE102009027181A1 (de) * 2009-06-25 2010-12-30 Robert Bosch Gmbh Dichteinheit
DE102009027724A1 (de) * 2009-07-15 2011-01-20 Robert Bosch Gmbh Abgasnachbehandlungsvorrichtung
DE102009028030A1 (de) * 2009-07-27 2011-02-03 Robert Bosch Gmbh Montageeinheit zur Befestigung eines Einspritzorgans an einem Abgasstrang und Abgasnachbehandlungsanordnung

Also Published As

Publication number Publication date
CN104040128A (zh) 2014-09-10
JP2015502490A (ja) 2015-01-22
KR20140105509A (ko) 2014-09-01
KR101631395B1 (ko) 2016-06-16
RU2014130138A (ru) 2016-02-10
US20140298780A1 (en) 2014-10-09
US9261000B2 (en) 2016-02-16
DE102011122286A1 (de) 2013-06-27
WO2013092829A1 (fr) 2013-06-27

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