WO2009008150A1 - Appareil d'épuration des gaz d'échappement - Google Patents
Appareil d'épuration des gaz d'échappement Download PDFInfo
- Publication number
- WO2009008150A1 WO2009008150A1 PCT/JP2008/001797 JP2008001797W WO2009008150A1 WO 2009008150 A1 WO2009008150 A1 WO 2009008150A1 JP 2008001797 W JP2008001797 W JP 2008001797W WO 2009008150 A1 WO2009008150 A1 WO 2009008150A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- nox
- selective reduction
- reduction catalyst
- exhaust
- urea
- Prior art date
Links
- 238000000746 purification Methods 0.000 title abstract 3
- 239000003054 catalyst Substances 0.000 abstract 7
- WTHDKMILWLGDKL-UHFFFAOYSA-N urea;hydrate Chemical compound O.NC(N)=O WTHDKMILWLGDKL-UHFFFAOYSA-N 0.000 abstract 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 2
- 230000004913 activation Effects 0.000 abstract 2
- 238000011144 upstream manufacturing Methods 0.000 abstract 2
- 229910021529 ammonia Inorganic materials 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 239000003638 chemical reducing agent Substances 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 230000001603 reducing effect Effects 0.000 abstract 1
- 238000001179 sorption measurement Methods 0.000 abstract 1
Classifications
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- 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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
- F01N2570/14—Nitrogen oxides
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
- Processes For Solid Components From Exhaust (AREA)
Abstract
Des effets favorables de réduction des oxydes d'azote (NOx) peuvent être obtenus à partir d'une température d'échappement inférieure à celle de l'art antérieur sans entraîner de dysfonctionnement au démarrage après un arrêt prolongé du moteur, etc. La présente invention concerne un appareil d'épuration des gaz d'échappement présentant un catalyseur de réduction sélective (5) disposé dans une zone médiane du tuyau d'échappement (4), le catalyseur de réduction sélective pouvant générer une réaction sélective des NOx avec l'ammoniac même en présence d'oxygène, ledit appareil étant adapté pour ajouter une solution à base d'urée et d'eau (6) en tant que réducteur dans le tuyau d'échappement (4) sur le côté en amont du catalyseur de réduction sélective (5) de façon à obtenir l'épuration des NOx par réduction. Le tuyau d'échappement (4) sur le côté en amont de l'emplacement où est ajoutée la solution à base d'urée et d'eau (6) est pourvu d'un filtre à particules (10) équipé sur son étage antérieur d'un catalyseur à oxydation (9). Entre le filtre à particules (10) et l'emplacement où est ajoutée la solution à base d'urée et d'eau (6), il est prévu un catalyseur d'adsorption des NOx (17) ayant la propriété d'adsorber physiquement les NOx des gaz d'échappement (3) à des températures inférieures à la température de limite inférieure d'activation du catalyseur de réduction sélective (5) et relâchant les NOx adsorbés à des températures proches de la température de limite inférieure d'activation du catalyseur de réduction sélective (5).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007-178713 | 2007-07-06 | ||
JP2007178713A JP2009013932A (ja) | 2007-07-06 | 2007-07-06 | 排気浄化装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009008150A1 true WO2009008150A1 (fr) | 2009-01-15 |
Family
ID=40228343
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2008/001797 WO2009008150A1 (fr) | 2007-07-06 | 2008-07-04 | Appareil d'épuration des gaz d'échappement |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP2009013932A (fr) |
WO (1) | WO2009008150A1 (fr) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4711006B2 (ja) * | 2009-05-18 | 2011-06-29 | 三菱自動車工業株式会社 | 排気浄化装置 |
JP5482436B2 (ja) * | 2009-06-12 | 2014-05-07 | 株式会社デンソー | エンジンの廃熱制御装置 |
US8612117B2 (en) | 2009-06-12 | 2013-12-17 | Denso Corporation | Apparatus for controlling the amount of waste heat of an engine |
JP2011094482A (ja) * | 2009-10-27 | 2011-05-12 | Hino Motors Ltd | ディーゼルエンジンの排ガス後処理装置 |
JP6352115B2 (ja) * | 2014-08-29 | 2018-07-04 | 日野自動車株式会社 | 排気浄化システム |
US10519829B2 (en) | 2016-02-22 | 2019-12-31 | Hino Motors, Ltd. | Exhaust purification system |
JP2019157739A (ja) * | 2018-03-12 | 2019-09-19 | いすゞ自動車株式会社 | 内燃機関の排気浄化装置 |
JP2019190417A (ja) * | 2018-04-27 | 2019-10-31 | いすゞ自動車株式会社 | 排気浄化装置および車両 |
DE102019210413B4 (de) * | 2019-07-15 | 2021-02-18 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Abgasnachbehandlung |
DE102019119294A1 (de) * | 2019-07-16 | 2021-01-21 | Elringklinger Ag | Abschirmteil |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0953442A (ja) * | 1995-08-14 | 1997-02-25 | Toyota Motor Corp | ディーゼル機関の排気浄化方法 |
JP2003065036A (ja) * | 2001-08-23 | 2003-03-05 | Toyota Motor Corp | 内燃機関の排気浄化装置 |
-
2007
- 2007-07-06 JP JP2007178713A patent/JP2009013932A/ja active Pending
-
2008
- 2008-07-04 WO PCT/JP2008/001797 patent/WO2009008150A1/fr active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0953442A (ja) * | 1995-08-14 | 1997-02-25 | Toyota Motor Corp | ディーゼル機関の排気浄化方法 |
JP2003065036A (ja) * | 2001-08-23 | 2003-03-05 | Toyota Motor Corp | 内燃機関の排気浄化装置 |
Also Published As
Publication number | Publication date |
---|---|
JP2009013932A (ja) | 2009-01-22 |
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