EP2726718A1 - Dispositif et procédé d'introduction d'un réducteur dans une ligne d'échappement - Google Patents

Dispositif et procédé d'introduction d'un réducteur dans une ligne d'échappement

Info

Publication number
EP2726718A1
EP2726718A1 EP12723486.2A EP12723486A EP2726718A1 EP 2726718 A1 EP2726718 A1 EP 2726718A1 EP 12723486 A EP12723486 A EP 12723486A EP 2726718 A1 EP2726718 A1 EP 2726718A1
Authority
EP
European Patent Office
Prior art keywords
exhaust
reducing agent
line
hollow element
exhaust gas
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Withdrawn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
EP12723486.2A
Other languages
German (de)
English (en)
Inventor
Sabine Amend
Markus Gloeckle
Franz-Josef Trompeter
Matthias Burger
Heinrich Duetsch
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2726718A1 publication Critical patent/EP2726718A1/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Withdrawn legal-status Critical Current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
    • F01N3/2066—Selective catalytic reduction [SCR]
    • 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
    • B01F25/313—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
    • B01F25/3131—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit with additional mixing means other than injector mixers, e.g. screens, baffles or rotating elements
    • 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
    • B01F25/313—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
    • B01F25/3132—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit by using two or more injector devices
    • B01F25/31322—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit by using two or more injector devices used simultaneously
    • 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
    • B01F25/313—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
    • B01F25/3133—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit characterised by the specific design of the injector
    • B01F25/31331—Perforated, multi-opening, with a plurality of holes
    • 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
    • B01F25/313—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
    • B01F25/3133—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit characterised by the specific design of the injector
    • B01F25/31332—Ring, torus, toroidal or coiled configurations
    • 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
    • F01N3/24—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
    • 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
    • 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
    • F01N2610/06—Adding substances to exhaust gases the substance being in the gaseous form
    • 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
    • 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 invention relates to a device and a method for introducing a reducing agent into an exhaust line of an internal combustion engine in order to achieve the most uniform possible distribution of the reducing agent in the exhaust system.
  • SCR Selective Catalytic Reduction
  • the urea water solution can be added to the exhaust in various ways.
  • the exhaust gases instead of a urea water solution and ammonia can be supplied in gaseous form.
  • DE 197 38 859 A1 shows a mixture delivery device for an exhaust system, in which an annular spray body, which has a circumferential distribution channel and a plurality of spray channels, is introduced into the exhaust gas line. Via a mixture supply line, a mixture of compressed gas and urea-water solution is fed and introduced into the exhaust gas flow upstream of the catalyst. Disclosure of the invention:
  • An object of the invention is to provide a device for injecting a reducing agent, in particular a gaseous reducing agent such as ammonia, into the exhaust gas line of an internal combustion engine with which the most uniform possible distribution of the reducing agent in the exhaust gas system is achieved.
  • a reducing agent in particular a gaseous reducing agent such as ammonia
  • An apparatus for introducing a reducing agent into an exhaust gas line of an internal combustion engine has at least one hollow element arranged in the exhaust gas line and at least one feed line, which is designed to supply reducing agent to the hollow element.
  • the at least one hollow element extends in a plane which is aligned transversely to the flow direction of the exhaust gases in the exhaust system.
  • In the hollow element at least one opening is formed which allows reducing agent to flow from the hollow element into the exhaust gas line.
  • a uniform distribution of the concentration of the reducing agent in the exhaust line is achieved when introducing the gaseous reducing agent in the exhaust system. This results in an increase in efficiency, especially in the case of short mixing sections.
  • a catalyst arranged in the exhaust gas line does not have to be thermo-thermally insulated. Hydrolysis perform, which is particularly advantageous at low temperatures.
  • the invention also includes a method of introducing a particular gaseous reducing agent into an exhaust line of an internal combustion engine, wherein the method includes in particular, the particular gaseous reducing agent through a device according to the invention in the exhaust system contribute.
  • the inventive introduction of a particular gaseous reducing agent is a particularly homogeneous mixing of the introduced reducing agent with the exhaust gases, which flow through the exhaust line achieved. This allows a particularly effective reduction of the nitrogen oxides contained in the exhaust gases over the entire cross section of the exhaust system.
  • the device according to the invention has at least one opening, which is oriented so that the reducing agent is parallel to the flow direction of the exhaust gases in the exhaust line from the hollow element in the
  • Exhaust line can flow.
  • at least one of the openings may be aligned such that the reducing agent flows with a transverse component, in particular at a right angle, to the flow direction of the exhaust gases in the exhaust gas line into the exhaust gas line. Due to the orientation of the openings, through which the reducing agent emerges from the hollow element and in the
  • Exhaust line flows the inflow angle, in which the reducing agent flows from the hollow element into the exhaust line, can be suitably adjusted to achieve an optimal and particularly particularly uniform distribution of the reducing agent in the exhaust gases in the exhaust system.
  • the at least one hollow element is helical, so that it extends in a spiral shape from the center of the exhaust gas line into its edge region.
  • the hollow element is preferably arranged in a plane which is aligned transversely, in particular perpendicularly, to the flow direction of the exhaust gases in the exhaust gas line.
  • the reducing agent can be supplied to the hollow element in the center of the exhaust gas line, so that it flows through the helical element into the outer regions of the exhaust gas line.
  • the reducing agent can be supplied to the screw or spiral hollow element at its outer end, so that it flows through the hollow element in the direction of the center of the exhaust gas line.
  • openings are formed through which, during operation, in each case a part of the reductant Onsffens flows from the hollow element in the exhaust line and the reducing agent is distributed uniformly over the entire cross section of the exhaust line.
  • the at least one hollow element extends in the radial direction through the cross section of the exhaust gas line.
  • openings are formed through which a part of the reducing agent in each case flows out of the hollow element into the exhaust gas line during operation.
  • a plurality of hollow elements are provided, and the hollow elements are preferably arranged in the form of a grid, which is aligned transversely, in particular at a right angle to the flow direction of the exhaust gases in the exhaust system.
  • a number of openings is provided, which allow an exit of reducing agent in the exhaust system.
  • the cross section of the exhaust line can be particularly evenly supplied with reducing agent, so that a particularly homogeneous mixing of the exhaust gases in the exhaust line with the supplied reducing agent can be achieved.
  • mixer flaps are arranged on and / or between the hollow elements, which flaps are designed to deflect or deflect the exhaust gas flow in the exhaust gas line.
  • mixer flaps which deflect the exhaust gas flow in the exhaust line or divert the mixing of the exhaust gases can be improved with the reducing agent in order to achieve the most homogeneous distribution of the reducing agent in the exhaust gases.
  • annular feed line is provided, which is designed to supply the hollow element or the hollow elements with the reducing agent to be introduced into the exhaust gas line.
  • An annular feed line may be formed inside or outside the exhaust line.
  • the device according to the invention for introducing the reducing agent is attached to a sealing ring or flange, which is arranged in the exhaust pipe.
  • a device according to the invention can be mounted particularly simple and inexpensive. In particular, additional interruptions (cuts) in the exhaust pipe, which can lead to leakage, can be avoided.
  • Figure 1 shows a first embodiment of a device according to the invention.
  • Figure 2 shows a second embodiment of a device according to the invention.
  • Figure 3 shows a third embodiment of a device according to the invention.
  • Figure 4 shows a fourth embodiment of a device according to the invention.
  • Figure 5 shows a fifth embodiment of a device according to the invention.
  • FIG. 6 shows a sixth embodiment of a device according to the invention.
  • the exhaust gas line respectively extends perpendicular to the drawing plane, so that the figures show a cross section through the exhaust gas line.
  • An inventive device according to a first embodiment is disposed at a position of the exhaust line, at the two pipes of the exhaust line abut each other and the transition is sealed by a sealing ring 2.
  • the inventive device of the first embodiment has a ring line 8, which extends at the height of the sealing ring 2 around the circumference of the exhaust line and is connected at at least one point with a supply line 10.
  • the supply line 10 is designed to supply the ring line 8 with the reducing agent to be injected, in this case a gaseous reducing agent, from an external source, not shown in FIG. 1.
  • the embodiment shown in Figure 1 has vertically extending webs 4 and horizontally extending webs 6, which form a rectangular grid in the interior of the exhaust system.
  • the rectangular arrangement of the webs 4, 6 is only an example and also arrangements are conceivable in which the webs 4, 6 are arranged at a different angle to each other and so form a pointed or obtuse-angled grid.
  • 6 mixer flaps 14 are attached, which are designed to divert the flowing perpendicular to the plane through the exhaust gas exhaust gases and in particular to swirl, so as homogeneous as possible
  • the mixer flaps 14 are designed such that they divert the exhaust gases flowing through the exhaust gas line alternately upwards and downwards; This achieves a particularly effective mixing of the exhaust gases with the injected reducing agent.
  • the hollow webs 4, 6 are in communication with the ring line 8 and have openings 12 in the interior of the exhaust gas line. Reductant fed through the feed line 10 of the ring line 8 flows from the ring line 8 into the cavities formed in the webs 4, 6 and from there through the openings. 12 in the exhaust line, where it mixes with the swirled by the mixer flaps 14 exhaust gases to reduce by means of a downstream of the device arranged, not shown in the figure 1 catalyst, the nitrogen oxides contained in the exhaust gases.
  • FIG. 2 shows an alternative embodiment of a device according to the invention.
  • the hollow elements 18 are formed as three concentrically arranged around the center of the exhaust line rings which are connected by a radially extending from the outer periphery to the center of the exhaust line feed line 10 are.
  • the supply line 10 leads the reducing agent from an external, not shown, source to the ring-shaped hollow elements 18.
  • the annular hollow elements each have a number of openings 12, through which the reducing agent flows from the annular hollow elements 18 into the exhaust gas line.
  • mixer blades 14 are arranged to deflect the exhaust gases flowing through the exhaust line, and in particular to swirl to effect a uniform distribution of the supplied reducing agent with the exhaust gases.
  • mixer blades 14 are arranged to deflect the exhaust gases flowing through the exhaust line, and in particular to swirl to effect a uniform distribution of the supplied reducing agent with the exhaust gases.
  • Figure 3 shows a third embodiment of a device according to the invention, which is arranged at the height of a flange 3, which is formed on an exhaust line.
  • the flange 3 has in its outer region a number of holes 5, through which the flange 3 can be screwed to a second flange.
  • a ring line 8 extending around the exhaust gas line is formed, which can be supplied with the reducing agent to be injected via a radial inlet 10.
  • the hollow elements 18 can all have the same length or, as shown in FIG. 3, different lengths and are each provided with a plurality of openings 12 formed, through which the reducing agent to be injected, which has been supplied to the radial hollow elements 18 through the inlet 10 and the ring line 8, can flow from the hollow elements 18 into the exhaust gas line.
  • Figure 4 shows another embodiment of a device according to the invention, in which the hollow elements 18 are arranged comb-like.
  • the hollow elements 18 extend from the supply line 10 essentially parallel to one another through the exhaust gas line. It is understood that the hollow elements 18 can also be at a certain angle to each other.
  • comb-like arranged hollow elements 18 may be fixed by webs, not shown in the figure 4 at the periphery of the exhaust line to increase the mechanical stability of the device.
  • the hollow elements 18 each have a plurality of openings 12, passes through the injected reducing agent in operation from the hollow elements 18 in the exhaust line.
  • These openings 12 may also be aligned parallel, obliquely and / or at a right angle to the flow direction of the exhaust gases in the exhaust gas line.
  • FIG. 5 shows a fifth exemplary embodiment of a device according to the invention.
  • the device according to the fifth embodiment comprises a single hollow member 18 which extends in a spiral or helical shape from an outer region of the exhaust line to its center.
  • a feed line 10 formed at an outer end of the hollow element 18 the hollow element 18 is supplied with the reducing agent to be injected.
  • the reducing agent flows through the spiral element 18 from an outer peripheral portion of the exhaust line toward the center thereof.
  • openings 12 formed along the hollow element 18 a portion of the supplied reducing agent enters the exhaust gas line so that the reducing agent is introduced uniformly over the entire cross section into the exhaust gas line in order to achieve the most homogeneous possible mixing of the reducing agent with the exhaust gases in the exhaust gas line.
  • the screw or spiral hollow element 18 shown in FIG. 5 has approximately three turns. However, this is only an example and the number of turns can be suitably selected depending on the diameter of the exhaust line and the diameter of the hollow element 18.
  • FIG. 6 shows a further exemplary embodiment of a device according to the invention, which likewise has a helical element or spiral-shaped hollow element 18 which extends in a plane of the exhaust gas line which is oriented at right angles to the flow direction of the exhaust gases in the exhaust gas line.
  • the feed line 10 through which the reducing element to be introduced is fed, extends radially from the outer region of the exhaust gas line to its center, where it merges into the hollow element 18, so that the fuel injected Reducing agent is supplied to the hollow member 18 through the supply line 10 in the center of the exhaust line, and flows through the hollow member 18 spirally to the outside.
  • a portion of the reducing agent passes through formed in the hollow member 18 openings 12 in the exhaust line.
  • regions of the hollow element 18 which are adjacent to one another in the radial direction are connected to one another by webs 20 running in the radial direction in order to increase the mechanical stability of the device and in particular of the hollow element 18.
  • 5 and 6 may additionally be arranged on the webs 20, as shown in FIGS. 1 and 2, in order to influence the exhaust gas flow in the exhaust gas line and to achieve better mixing of the exhaust gases with the injected reducing agent.
  • the openings 12 can be arranged both parallel to the flow direction of the exhaust gases in the exhaust gas system and at any desired, in particular right angle to the flow direction of the exhaust gases. be net in order to achieve an optimal, in particular homogeneous mixing of the injected reducing agent with the exhaust gases flowing through the exhaust line.
  • the openings 12 preferably have a diameter which is in each case smaller than one tenth of the diameter of the respective hollow element 4, 6, 18 in order to keep the pressure drop in the hollow element 4, 6, 18 as low as possible over its course and thus a uniform introduction of the reducing agent to ensure in the exhaust system.
  • a device according to the invention makes it possible to effectively introduce a gaseous reducing agent into the exhaust gas line of an internal combustion engine, thereby achieving a very even distribution of the reducing agent in the exhaust gas line.
  • the invention is not limited to the embodiments shown in the figures, but includes all embodiments that fall within the scope of the following claims.

Landscapes

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

Abstract

L'invention concerne un dispositif d'introduction d'un réducteur dans une ligne d'échappement d'un moteur à combustion interne comprenant au moins un élément creux (4, 6; 18) disposé dans la ligne d'échappement et au moins une conduite d'amenée réalisée pour amener le réducteur à l'élément creux (4, 6; 18). Le ou les éléments creux (4, 6; 18) s'étendent dans un plan orienté transversalement par rapport au sens d'écoulement des gaz d'échappement dans la ligne d'échappement. Dans l'élément creux (4, 6; 18) est ménagée au moins une ouverture (12) permettant d'introduire le réducteur de l'élément creux (4, 6; 18) dans la ligne d'échappement.
EP12723486.2A 2011-06-28 2012-05-24 Dispositif et procédé d'introduction d'un réducteur dans une ligne d'échappement Withdrawn EP2726718A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011078181A DE102011078181A1 (de) 2011-06-28 2011-06-28 Vorrichtung und Verfahren zum Einbringen eines Reduktionsmittels in einen Abgasstrang
PCT/EP2012/059714 WO2013000640A1 (fr) 2011-06-28 2012-05-24 Dispositif et procédé d'introduction d'un réducteur dans une ligne d'échappement

Publications (1)

Publication Number Publication Date
EP2726718A1 true EP2726718A1 (fr) 2014-05-07

Family

ID=46149475

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12723486.2A Withdrawn EP2726718A1 (fr) 2011-06-28 2012-05-24 Dispositif et procédé d'introduction d'un réducteur dans une ligne d'échappement

Country Status (3)

Country Link
EP (1) EP2726718A1 (fr)
DE (1) DE102011078181A1 (fr)
WO (1) WO2013000640A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9482132B2 (en) * 2013-11-07 2016-11-01 Cummins Emission Solutions, Inc. Gaseous reductant delivery devices and systems
US9453446B2 (en) * 2014-10-21 2016-09-27 Cummins Emission Solutions, Inc. Constant mass flow injection system
US10392989B1 (en) 2018-10-19 2019-08-27 Faurecia Emissions Control Technologies, Usa, Llc Automotive exhaust aftertreatment system having an ammonia distributor
FR3093346B1 (fr) * 2019-02-28 2021-07-09 Faurecia Systemes Dechappement Dispositif d’injection et de mélange d’un gaz et ligne d’échappement comportant un tel dispositif
US10794252B1 (en) 2019-04-18 2020-10-06 Faurecia Emissions Control Technologies, Usa, Llc Direct spray exhaust mixer system
US11203966B1 (en) 2020-09-30 2021-12-21 Faurecia Emissions Control Technologies, Usa, Llc Circular sampling device for an exhaust gas sensor
WO2023144029A2 (fr) 2022-01-26 2023-08-03 Casale Sa Système de mélange
EP4321242A1 (fr) * 2022-08-10 2024-02-14 Linde GmbH Système de mélange de deux fluides

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0526393A1 (fr) * 1991-07-30 1993-02-03 Sulzer Chemtech AG dispositif d'immixtion

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1372655A (fr) * 1963-08-09 1964-09-18 Synthese Et D Oxydation Synoxy Procédé et dispositif de mélange et d'homogénéisation de fluides
US3702619A (en) * 1971-01-28 1972-11-14 Shell Oil Co In-line mixing apparatus for gases
JPH06114236A (ja) * 1992-08-18 1994-04-26 Mitsubishi Heavy Ind Ltd アンモニアの分解防止方法
DE19738859A1 (de) 1997-09-05 1999-03-11 Bosch Gmbh Robert Gemischabgabevorrichtung
JP4090972B2 (ja) * 2003-09-19 2008-05-28 日産ディーゼル工業株式会社 エンジンの排気浄化装置
EP1812696B9 (fr) * 2004-10-11 2008-11-26 Volvo Lastvagnar Ab Systeme et procede de reduction des oxydes d'azote des gaz d'echappement generes par un moteur a combustion interne a melange pauvre
US7842266B2 (en) * 2006-01-06 2010-11-30 Mitsui Engineering & Shipbuilding Co., Ltd. Method of denitration of exhaust gas and apparatus therefor
JP2008196479A (ja) * 2007-02-09 2008-08-28 Sulzer Chemtech Ag 排気ガス浄化システム
FR2955610B1 (fr) * 2010-01-22 2012-01-13 Peugeot Citroen Automobiles Sa Dispositif d'injection de gaz et ligne d'echappement comprenant un tel dispositif

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0526393A1 (fr) * 1991-07-30 1993-02-03 Sulzer Chemtech AG dispositif d'immixtion

Also Published As

Publication number Publication date
WO2013000640A1 (fr) 2013-01-03
DE102011078181A1 (de) 2013-01-03

Similar Documents

Publication Publication Date Title
DE102015115220B4 (de) Mischerbaugruppe zur Bereitstellung eines kompakten Mischers
EP2726718A1 (fr) Dispositif et procédé d'introduction d'un réducteur dans une ligne d'échappement
DE102018106286B4 (de) Nachbehandlungssystem
EP2171229B1 (fr) Dispositif de retraitement des gaz d'échappement de moteurs diesel
EP2687286B1 (fr) Dispositif de mélange pour le post-traitement de gaz d'échappement
EP2161423B1 (fr) Installation de gaz d'échappement pour véhicules diesel dotés d'un catalyseur SCR
DE102011077156B4 (de) Abgasanlage und Injektionsmodul
DE112012000089T5 (de) Vorrichtung zum Mischen einer wässrigen Reduktionsmittellösung und Abgasnachbehandlungsvorrichtung
WO2015018849A1 (fr) Chambre de mélange
WO2007036347A1 (fr) Systeme d'echappement a buse d'injection
DE112017007996T5 (de) Einspritzdüsenkegel nach Art einer Venturidüse
WO2012120000A1 (fr) Système d'échappement d'un moteur à combustion interne
DE112013004154T5 (de) Einspritz- und Mischsystem für Reduktionsmittel
DE102008029110A1 (de) Misch- und/oder Verdampfungseinrichtung
DE202021104734U1 (de) Mischer und Abgassystem mit solchem Mischer
EP3726017B1 (fr) Mélangeur
DE102019104772A1 (de) Abgasanlage
WO2017137032A1 (fr) Mélangeur servant à mélanger un flux de gaz d'échappement d'un moteur à combustion interne et système d'échappement
AT521002B1 (de) Mischeinrichtung
EP3018315B1 (fr) Dispositif catalyseur pour un moteur a combustion interne fixe
WO2008074414A1 (fr) Tuyau d'échappement pour un système d'échappement d'un moteur à combustion interne
EP3033502B1 (fr) Unité de traitement des gaz d'échappement pourvue d'éléments conducteurs à division et mélange d'écoulement
WO2015071005A1 (fr) Module d'injection et ligne de gaz d'échappement présentant un module d'injection
AT518758B1 (de) Abgasnachbehandlungs-vorrichtung für eine brennkraftmaschine
EP3680462B1 (fr) Installation de gaz d'échappement

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

17P Request for examination filed

Effective date: 20140128

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

DAX Request for extension of the european patent (deleted)
17Q First examination report despatched

Effective date: 20150511

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20150922