WO2006003868A1 - Dispositif de purification d’échappement - Google Patents

Dispositif de purification d’échappement Download PDF

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Publication number
WO2006003868A1
WO2006003868A1 PCT/JP2005/011776 JP2005011776W WO2006003868A1 WO 2006003868 A1 WO2006003868 A1 WO 2006003868A1 JP 2005011776 W JP2005011776 W JP 2005011776W WO 2006003868 A1 WO2006003868 A1 WO 2006003868A1
Authority
WO
WIPO (PCT)
Prior art keywords
reducing agent
hot plate
exhaust
engine
electric heater
Prior art date
Application number
PCT/JP2005/011776
Other languages
English (en)
Japanese (ja)
Inventor
Kiminobu Hirata
Original Assignee
Nissan Diesel Motor Co., Ltd.
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 Nissan Diesel Motor Co., Ltd. filed Critical Nissan Diesel Motor Co., Ltd.
Publication of WO2006003868A1 publication Critical patent/WO2006003868A1/fr

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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
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/90—Injecting reactants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B01D53/9404—Removing only nitrogen compounds
    • B01D53/9409—Nitrogen oxides
    • B01D53/9431—Processes characterised by a specific device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • 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]
    • F01N3/208—Control of selective catalytic reduction [SCR], e.g. dosing of reducing agent
    • 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
    • F01N2240/16—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 an electric heater, i.e. a resistance heater
    • 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
    • F01N2610/10—Adding substances to exhaust gases the substance being heated, e.g. by heating tank or supply line of the added substance
    • F01N2610/102—Adding substances to exhaust gases the substance being heated, e.g. by heating tank or supply line of the added substance after addition to exhaust gases, e.g. by a passively or actively heated surface in the exhaust conduit
    • 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
    • F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
    • F01N2900/06—Parameters used for exhaust control or diagnosing
    • F01N2900/08—Parameters used for exhaust control or diagnosing said parameters being related to the engine
    • 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
    • F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
    • F01N2900/06—Parameters used for exhaust control or diagnosing
    • F01N2900/16—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust apparatus, e.g. particulate filter or catalyst
    • F01N2900/1602—Temperature of exhaust gas 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 present invention relates to an exhaust gas purification apparatus that reduces and purifies nitrogen oxides (NOx) in exhaust gas using a liquid reducing agent, while preventing precipitation of the reducing agent component (solute) and effectively It is about technology to plan utilization.
  • NOx nitrogen oxides
  • solute precipitation of the reducing agent component
  • Patent Document 1 An exhaust purification device disclosed in Japanese Patent Laid-Open No. 2000-27627 (Patent Document 1) has been proposed as a catalyst purification system for removing NOx in engine exhaust.
  • the exhaust purification system is designed to inject NOx and liquid reductant in the exhaust gas by injecting and supplying a liquid reductant according to the engine operating condition to the exhaust upstream of the reduction catalyst installed in the engine exhaust pipe.
  • the catalyst is subjected to a catalytic reduction reaction to purify NOx as a harmless component.
  • the reduction reaction is NO
  • the present invention provides a hot pop having a built-in electric heater.
  • the liquid reducing agent is supplied to the upper surface of the rate, and the electric heater is controlled so that the hot plate temperature is at least equal to or higher than the melting point of the reducing agent component, thereby preventing precipitation of the reducing agent component and effective use thereof.
  • An object of the present invention is to provide an exhaust purification apparatus.
  • an exhaust emission control device is provided in an engine exhaust pipe, and a reduction catalyst that reduces and purifies nitrogen oxides with a liquid reducing agent, and a lower part of the exhaust pipe that is located upstream of the reduction catalyst exhaust A hot plate, an electric heater that heats the hot plate, a reducing agent supply device that supplies a liquid reducing agent to the upper surface of the hot plate, and a control unit or thermostat that controls the operation of the electric heater. It is composed of
  • the liquid reducing agent supplied to the upper surface of the hot plate receives heat from the hot plate heated by the electric heater, and the temperature is equal to or higher than the melting point of the reducing agent component. Raise the temperature. For this reason, since the liquid reducing agent is heated to a temperature higher than the melting point, vaporization and hydrolysis are promoted, and the liquid reducing agent is led to the reduction catalyst while being diffused almost uniformly in the exhaust pipe. On the other hand, the nitrogen oxides in the exhaust gas led to the reduction catalyst through the exhaust pipe are released into the atmosphere as harmless components by the catalytic reduction reaction. Therefore, by actively vaporizing and hydrolyzing the liquid reducing agent supplied to the upper surface of the hot plate, effective use can be achieved while preventing the precipitation of the reducing agent component.
  • FIG. 1 is an overall configuration diagram showing an example of an exhaust purification apparatus to which the present invention is applied.
  • FIG. 2 is a detailed explanatory view of a hot plate.
  • FIG. 3 is a flowchart of a control program for controlling the electric heater.
  • FIG. 4 is an explanatory diagram of a heater output map.
  • FIG. 5 is a flowchart of a diagnostic program for diagnosing deterioration of the electric heater. Explanation of symbols
  • Figure 1 shows the overall configuration of an exhaust purification system that uses an aqueous urea solution as the liquid reducing agent and purifies NOx in the engine exhaust by a catalytic reduction reaction.
  • An exhaust pipe 14 connected to the exhaust manifold 12 of the engine 10 includes an oxidation catalyst 16 that oxidizes nitric oxide (NO) to nitrogen dioxide (NO) along the exhaust circulation direction, and urine.
  • oxidation catalyst 16 that oxidizes nitric oxide (NO) to nitrogen dioxide (NO) along the exhaust circulation direction, and urine.
  • An addition nozzle 18 that drops or sprays the aqueous solution from above to add downward, a NOx reduction catalyst 20 that reduces and purifies NOx with ammonia obtained by hydrolyzing the urea aqueous solution, and a NOx reduction catalyst 20 And an ammonia acid catalyst 22 that acidifies the ammonia that has passed through the catalyst.
  • the addition nozzle 18 is supplied with a urea aqueous solution from a reducing agent container (not shown) via a reducing agent adding device 26 controlled by a control unit 24 having a built-in computer according to the engine operating state.
  • the reducing agent supply device is configured by the cooperation of the reducing agent container, the addition nozzle 18, the control unit 24, and the reducing agent addition device 26.
  • the exhaust pipe 14 positioned below the addition nozzle 18 receives the urea aqueous solution dropped or injected from the addition nozzle 18 and heats it to a melting point temperature (about 132 ° C) or higher.
  • Hot plate made of metal with excellent thermal conductivity that promotes its vaporization and hydrolysis 2 8 is arranged. As shown in FIG. 2, the hot plate 28 includes a plate temperature sensor 30 and an electric heater 32 for detecting the plate temperature Thp.
  • a rotational speed sensor 34 for detecting the rotational speed Ne of the engine 10 and a load sensor 36 for detecting the engine load Q
  • a reducing agent temperature sensor 38 for detecting the urea aqueous solution temperature Tu supplied from the addition nozzle 18 is provided.
  • the engine load Q intake air flow rate, intake negative pressure, accelerator opening, throttle opening, fuel injection amount, etc. can be used.
  • the signals of the plate temperature sensor 30, the rotation speed sensor 34, the load sensor 36, and the reducing agent temperature sensor 38 are respectively input to the control unit 24 and are electrically heated by a control program stored in the ROM (Read Only Memory). Heater 32 is controlled.
  • FIG. 3 shows the contents of a control program that is repeatedly executed at predetermined time intervals in the control unit 24.
  • step 1 abbreviated as “S1” in the figure, the same applies hereinafter
  • the rotational speed Ne is read from the rotational speed sensor 34.
  • step 2 it is determined whether or not the engine 10 has been started based on the rotational speed Ne, that is, whether or not the rotational speed Ne is greater than 0 (Ne> 0). And if engine 10 starts and goes to step 3 (Yes), engine 10 starts and / or, otherwise NOx in the exhaust does not need to be purified. The process is terminated to avoid excessive energy consumption (No).
  • step 3 the plate temperature Thp of the hot plate 28 is read from the plate temperature sensor 30.
  • step 4 it is determined whether or not the plate temperature Thp is less than a predetermined value T.
  • the predetermined value ⁇ is a temperature slightly higher than the melting point temperature of urea, in other words, at least
  • step 5 if the plate temperature Thp is equal to or higher than the predetermined value T, the step
  • step 9 the urea aqueous solution temperature Tu is read from the reducing agent temperature sensor 38.
  • step 6 the engine load Q is read from the load sensor 36.
  • step 7 the heater output according to the urea aqueous solution temperature Tu, the rotational speed Ne, and the engine load Q is calculated with reference to the heater output map as shown in FIG.
  • the heater output map a heater output capable of generating heat to compensate for the decrease in the plate temperature Thp when the urea aqueous solution is supplied to the hot plate 28 is set.
  • the control load required for the heater output calculation can be kept low.
  • step 8 the electric heater 32 is operated based on the calculated heater output.
  • the electric heater 32 operates when the plate temperature T hp of the hot plate 28 is lower than the predetermined value T, while the plate temperature Thp is higher than the predetermined value T.
  • the rate temperature Thp is at least a predetermined value that is the melting point temperature of urea
  • the urea aqueous solution supplied to the hot plate 28 is reliably and efficiently vaporized and hydrolyzed. Can be decomposed.
  • the exhaust gas of the engine 10 is introduced into the NOx reduction catalyst 20 through the exhaust manifold 12, the exhaust pipe 14, and the oxidation catalyst 16.
  • the urea aqueous solution supplied from the addition nozzle 18 to the upper surface of the hot plate 28 is maintained at a temperature equal to or higher than the melting point of urea because the plate temperature Thp of the hot plate 28 is maintained above the melting point of urea.
  • NOx reduction catalyst 20 uses ammonia as a reducing agent, and NOx in the exhaust gas is water (H 2 O) and harmless.
  • NOx reduction catalyst 20 NO oxidation into NO by the oxidation catalyst 16 that improves the rate of NO and N in the exhaust.
  • the ratio with O is improved to be suitable for the catalytic reduction reaction.
  • NOx reduction catalyst 20 NOx reduction catalyst 20
  • the excess ammonia is acidified by the ammonia acid catalyst 22 disposed downstream of the exhaust gas, so that it is possible to prevent ammonia that emits a strange odor from being released into the atmosphere as it is.
  • fins and throttles may be provided around the hot plate 28 to promote diffusion of vaporized and hydrolyzed ammonia.
  • the hot plate 28 preferably has a certain heat capacity so that the plate temperature Thp does not easily decrease even when a relatively low temperature urea aqueous solution is supplied. Furthermore, by making the hot plate 28 detachable from the exhaust pipe 14, it is recommended that when urea is precipitated, it should be removed by washing.
  • FIG. 5 shows a diagnostic program that is executed repeatedly in parallel with the control program shown in FIG. 3 for diagnosing deterioration of the electric heater 32.
  • step 11 the rotational speed Ne is read from the rotational speed sensor 34.
  • step 12 it is determined whether or not the engine 10 is started based on the rotational speed Ne. Then, if the engine 10 has been started, the process proceeds to step 13 (Yes), while if the engine 10 has started! /, If not, the process is terminated (No).
  • step 13 the engine load Q is read from the load sensor 36.
  • step 14 it is determined whether the engine 10 is idling based on the rotational speed Ne and the engine load Q. If it is in the idling state, the process proceeds to step 15 (Yes), but if it is not in the idling state, the process ends (No). Whether the engine is idling or not may be determined based on the opening degree of the throttle valve installed in the intake pipe or the output of the idling switch attached to the throttle valve.
  • step 15 it is determined whether or not the idling state has continued for a predetermined time. If the idling state continues for a predetermined time, the process proceeds to step 16 (Yes), while if the idling state does not continue for the predetermined time, the process ends (No).
  • step 16 the plate temperature Thp of the hot plate 28 is read from the plate temperature sensor 30.
  • Step 17 it is determined whether or not the plate temperature Thp is less than a predetermined value T.
  • Step 18 If the plate temperature Thp is less than the predetermined value T, proceed to Step 18 (Yes), Activating a warning device such as a warning light to notify that the sensor 32 has deteriorated. On the other hand, if the plate temperature Thp is equal to or higher than the predetermined value T, the process is terminated (No).
  • the powerful diagnostic program it is possible to indirectly diagnose whether the electric heater 32 built in the hot plate 28 is deteriorated or not through its function. That is, when the engine 10 is in an idling state, the exhaust temperature is lowered, so that the plate temperature Thp of the hot plate 28 is gradually lowered. However, if the deterioration of the electric heater 32 is small, the plate temperature Thp of the hot plate 28 is maintained at a predetermined value T or more by the control program shown in FIG.
  • the plate temperature Thp remains below T even if the idling state continues for a predetermined time.
  • a thermostat that automatically turns off 0 N / OFF at a temperature slightly higher than the melting point of urea may be used instead of software processing by the control unit 24.
  • the present invention is not limited to an exhaust gas purification apparatus that uses an aqueous urea solution as a liquid reducing agent, but can also be applied to those that use gasoline, light oil, alcohol, or the like mainly containing hydrocarbons as a liquid reducing agent. It ’s ugly! /

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Environmental & Geological Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biomedical Technology (AREA)
  • Toxicology (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

Cette invention a pour objet un dispositif de purification d’échappement comprenant un catalyseur de réduction d’oxyde d’azote disposé dans un tuyau d’échappement de moteur, permettant de réduire l’oxyde d’azote à l’aide d’un réducteur liquide tel qu’une solution d’urée aqueuse, une plaque chaude installée dans la partie inférieure du tuyau d’échappement le long de l’échappement à la verticale du catalyseur de réduction d’oxyde d’azote, un chauffage électrothermique construit dans la plaque chaude, un dispositif de réduction supplémentaire permettant de fournir le réducteur liquide à la surface supérieure de la plaque chaude, et une unité de contrôle ou un thermostat permettant de contrôler le chauffage électrothermique de telle manière que la température de la plaque chaude reste à une température minimale correspondant à la température du point de fonte du composant réducteur. En vaporisant, de manière active, et en désagrégeant le réducteur liquide fourni à la surface supérieure de la plaque chaude, le composant réducteur peut être utilisé avec efficacité en évitant toute précipitation.
PCT/JP2005/011776 2004-07-02 2005-06-28 Dispositif de purification d’échappement WO2006003868A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004196473A JP4290081B2 (ja) 2004-07-02 2004-07-02 排気浄化装置
JP2004-196473 2004-07-02

Publications (1)

Publication Number Publication Date
WO2006003868A1 true WO2006003868A1 (fr) 2006-01-12

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Cited By (7)

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FR2896533A1 (fr) * 2006-01-26 2007-07-27 Renault Sas Ligne d'echappement pour moteur a combustion interne de vehicule automobile, comprenant un dispositif de traitement de gaz d'echappement
WO2012022687A1 (fr) * 2010-08-18 2012-02-23 Emitec Gesellschaft Für Emissionstechnologie Mbh Procédé pour faire fonctionner un dispositif de traitement de gaz d'échappement
WO2012131874A1 (fr) * 2011-03-28 2012-10-04 トヨタ自動車株式会社 Dispositif d'épuration des gaz d'échappement pour moteur à combustion interne
FR3014136A1 (fr) * 2013-12-03 2015-06-05 Faurecia Sys Echappement Dispositif d'injection d'un reducteur et ligne d'echappement correspondante
JP2015143505A (ja) * 2014-01-31 2015-08-06 トヨタ自動車株式会社 内燃機関の排気系構造
US20180080360A1 (en) * 2016-09-21 2018-03-22 Eberspächer Exhaust Technology GmbH & Co. KG Reactant introduction device for introducing reactant into the exhaust gas stream of an internal combustion engine
EP4130446A1 (fr) * 2021-08-05 2023-02-08 Friedrich Boysen GmbH & Co. KG Dispositif de mélange

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DE102006025678A1 (de) * 2006-06-01 2007-12-06 Arvinmeritor Emissions Technologies Gmbh Baugruppe sowie Verfahren zur Verdampfung einer oxidierbaren Flüssigkeit und Einleitung des bei der Verdampfung erzeugten Fluids in einem Gasstrom
DE102006047018A1 (de) * 2006-10-02 2008-04-03 Emitec Gesellschaft Für Emissionstechnologie Mbh Verfahren und Vorrichtung zum Bereitstellen eines Reduktionsmittelvorläufers
DE102006058402A1 (de) 2006-12-12 2008-06-19 Bayerische Motoren Werke Ag Vorrichtung zum Zumischen eines Reduktionsmittels in einen Abgasstrom einer Brennkraftmaschine
JP2011516770A (ja) * 2008-02-29 2011-05-26 エミテック ゲゼルシヤフト フユア エミツシオンス テクノロギー ミツト ベシユレンクテル ハフツング 少なくとも１つの還元剤前駆体および／または還元剤を含むガスを生成するための蒸発装置
JP5181030B2 (ja) * 2008-09-26 2013-04-10 ボッシュ株式会社 還元剤添加装置及びその制御方法
JP2010270624A (ja) * 2009-05-19 2010-12-02 Toyota Motor Corp 内燃機関の排気装置
JP5546205B2 (ja) * 2009-10-28 2014-07-09 ダイムラー・アクチェンゲゼルシャフト 還元剤噴射ノズル
SE535355C2 (sv) * 2010-11-08 2012-07-03 Scania Cv Ab Avgasefterbehandlingsanordning och förfarande för efterbehandling av avgaser
MX343307B (es) * 2012-03-02 2016-11-01 Emitec Ges Für Emissionstechnologie Mbh Método para operar un catalizador de calentamiento.
US9816416B2 (en) 2013-06-10 2017-11-14 Bosch Corporation Control apparatus and control method for reducing agent supply apparatus
KR101646919B1 (ko) * 2015-05-21 2016-08-23 (주)나라케이아이씨 보온재용 열분해 가스 제거장치 및 그 제거장치를 이용한 열분해 가스 제거방법
US10577995B2 (en) 2017-08-25 2020-03-03 Faurecia Emissions Control Technologies, Usa, Llc Double wall mixer with active heat transfer
DE102017124032A1 (de) * 2017-10-16 2019-04-18 Eberspächer Exhaust Technology GmbH & Co. KG Abgas/Reaktionsmittel-Mischbaugruppe
DE102018200326A1 (de) * 2018-01-11 2019-07-11 Robert Bosch Gmbh Abgasnachbehandlungssystem
US10287948B1 (en) 2018-04-23 2019-05-14 Faurecia Emissions Control Technologies, Usa, Llc High efficiency mixer for vehicle exhaust system
US10316721B1 (en) 2018-04-23 2019-06-11 Faurecia Emissions Control Technologies, Usa, Llc High efficiency mixer for vehicle exhaust system
US10787946B2 (en) 2018-09-19 2020-09-29 Faurecia Emissions Control Technologies, Usa, Llc Heated dosing mixer
US11506099B1 (en) 2021-08-24 2022-11-22 Tenneco Automotive Operating Company Inc. Electrically-heated mix pipe for processing diesel exhaust fluid in a selective catalytic reduction system

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JP2000352305A (ja) * 1999-05-19 2000-12-19 Daimlerchrysler Ag 還元剤添加による窒素酸化物還元を伴う排気ガス浄化装置
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FR2896533A1 (fr) * 2006-01-26 2007-07-27 Renault Sas Ligne d'echappement pour moteur a combustion interne de vehicule automobile, comprenant un dispositif de traitement de gaz d'echappement
WO2012022687A1 (fr) * 2010-08-18 2012-02-23 Emitec Gesellschaft Für Emissionstechnologie Mbh Procédé pour faire fonctionner un dispositif de traitement de gaz d'échappement
US9623378B2 (en) 2010-08-18 2017-04-18 Emitec Gesellschaft Fuer Emissionstechnologie Mbh Method for operating an exhaust gas treatment device and motor vehicle having the device
WO2012131874A1 (fr) * 2011-03-28 2012-10-04 トヨタ自動車株式会社 Dispositif d'épuration des gaz d'échappement pour moteur à combustion interne
CN103459789A (zh) * 2011-03-28 2013-12-18 丰田自动车株式会社 内燃机的排气净化装置
US9506386B2 (en) 2013-12-03 2016-11-29 Faurecia Systemes D'echappement Injection device for a reducing agent and corresponding exhaust line
FR3014136A1 (fr) * 2013-12-03 2015-06-05 Faurecia Sys Echappement Dispositif d'injection d'un reducteur et ligne d'echappement correspondante
JP2015143505A (ja) * 2014-01-31 2015-08-06 トヨタ自動車株式会社 内燃機関の排気系構造
US20180080360A1 (en) * 2016-09-21 2018-03-22 Eberspächer Exhaust Technology GmbH & Co. KG Reactant introduction device for introducing reactant into the exhaust gas stream of an internal combustion engine
DE102016117746A1 (de) 2016-09-21 2018-03-22 Eberspächer Exhaust Technology GmbH & Co. KG Reaktionsmitteleingabeanordnung zur Eingabe von Reaktionsmittel in den Abgasstrom einer Brennkraftmaschine
US10570796B2 (en) 2016-09-21 2020-02-25 Eberspächer Exhaust Technology GmbH & Co. KG Reactant introduction device for introducing reactant into the exhaust gas stream of an internal combustion engine
EP4130446A1 (fr) * 2021-08-05 2023-02-08 Friedrich Boysen GmbH & Co. KG Dispositif de mélange
US11814999B2 (en) 2021-08-05 2023-11-14 Friedrich Boysen Gmbh & Co. Kg Mixing apparatus

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