WO2009008450A1 - 内燃機関の排気浄化装置 - Google Patents

内燃機関の排気浄化装置 Download PDF

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Publication number
WO2009008450A1
WO2009008450A1 PCT/JP2008/062408 JP2008062408W WO2009008450A1 WO 2009008450 A1 WO2009008450 A1 WO 2009008450A1 JP 2008062408 W JP2008062408 W JP 2008062408W WO 2009008450 A1 WO2009008450 A1 WO 2009008450A1
Authority
WO
WIPO (PCT)
Prior art keywords
stage catalyst
reducing agent
post
exhaust passage
combustion engine
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.)
Ceased
Application number
PCT/JP2008/062408
Other languages
English (en)
French (fr)
Inventor
Kenichi Tsujimoto
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.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
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 Toyota Motor Corp filed Critical Toyota Motor Corp
Priority to EP08790995.8A priority Critical patent/EP2177730A4/en
Priority to JP2009522659A priority patent/JP5093238B2/ja
Priority to US12/667,916 priority patent/US8959897B2/en
Publication of WO2009008450A1 publication Critical patent/WO2009008450A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
    • F01N3/0814—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents combined with catalytic converters, e.g. NOx absorption/storage reduction catalysts
    • 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
    • B01D53/9459—Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts
    • B01D53/9477—Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts with catalysts positioned on separate bricks, e.g. exhaust systems
    • 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
    • F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
    • F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
    • F01N3/0842—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
    • 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
    • F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
    • F01N3/2033—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using a fuel burner or introducing fuel into exhaust duct
    • 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
    • F01N3/2053—By-passing catalytic reactors, e.g. to prevent overheating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/20—Reductants
    • B01D2251/208—Hydrocarbons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/90—Physical characteristics of catalysts
    • B01D2255/91—NOx-storage component incorporated in the catalyst
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/90—Physical characteristics of catalysts
    • B01D2255/912—HC-storage component incorporated in the catalyst
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/01—Engine exhaust gases
    • B01D2258/012—Diesel engines and lean burn gasoline engines
    • 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
    • B01D53/9413—Processes characterised by a specific catalyst
    • B01D53/9418—Processes characterised by a specific catalyst for removing nitrogen oxides by selective catalytic reduction [SCR] using a reducing agent in a lean exhaust gas
    • 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
    • B01D53/944—Simultaneously removing carbon monoxide, hydrocarbons or carbon making use of oxidation catalysts
    • 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
    • F01N2570/12—Hydrocarbons
    • 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
    • F01N2610/03—Adding substances to exhaust gases the substance being hydrocarbons, e.g. engine fuel
    • 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)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

　本発明は、内燃機関の排気通路に前段触媒と後段触媒とが上流側から順に直列に並べて設置されている場合において、後段触媒の還元剤被毒や外部への還元剤の放出を抑制しつつ後段触媒を早期に昇温させることを課題とする。本発明においては、前段触媒４をその外周面と排気通路２の内周面との間を排気が流れるように設ける。また、前段触媒４を還元剤が通過するように還元剤を添加する還元剤添加弁６を排気通路２における前段触媒４の直上流に設ける。さらに、前段触媒４と後段触媒１４との間の排気通路２に排気中の還元剤を一時的に保持する機能を有する保持触媒１３を設ける。
PCT/JP2008/062408 2007-07-11 2008-07-09 内燃機関の排気浄化装置 Ceased WO2009008450A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP08790995.8A EP2177730A4 (en) 2007-07-11 2008-07-09 EMISSION CLEANER FOR A COMBUSTION ENGINE
JP2009522659A JP5093238B2 (ja) 2007-07-11 2008-07-09 内燃機関の排気浄化装置
US12/667,916 US8959897B2 (en) 2007-07-11 2008-07-09 Exhaust gas purification apparatus in an internal combustion engine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-182005 2007-07-11
JP2007182005 2007-07-11

Publications (1)

Publication Number Publication Date
WO2009008450A1 true WO2009008450A1 (ja) 2009-01-15

Family

ID=40228621

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/062408 Ceased WO2009008450A1 (ja) 2007-07-11 2008-07-09 内燃機関の排気浄化装置

Country Status (4)

Country Link
US (1) US8959897B2 (ja)
EP (1) EP2177730A4 (ja)
JP (1) JP5093238B2 (ja)
WO (1) WO2009008450A1 (ja)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010082493A1 (ja) * 2009-01-16 2010-07-22 トヨタ自動車株式会社 内燃機関の排気浄化装置
JP2012516966A (ja) * 2009-02-06 2012-07-26 ダイムラー・アクチェンゲゼルシャフト 排気ガス浄化装置付き内燃機関の作動方法
US20120304627A1 (en) * 2011-06-06 2012-12-06 GM Global Technology Operations LLC Electronically heated hydrocarbon (hc) adsorber
RU2600196C2 (ru) * 2012-03-02 2016-10-20 Эмитек Гезельшафт Фюр Эмиссионстехнологи Мбх Способ эксплуатации нагревательного катализатора
JP2017190686A (ja) * 2016-04-12 2017-10-19 トヨタ自動車株式会社 内燃機関の排気浄化制御装置

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009082035A1 (ja) * 2007-12-26 2009-07-02 Toyota Jidosha Kabushiki Kaisha 内燃機関の排気浄化装置
JP4507018B2 (ja) * 2008-06-27 2010-07-21 三菱自動車工業株式会社 内燃機関の排気浄化装置
JP5644164B2 (ja) * 2010-04-15 2014-12-24 いすゞ自動車株式会社 排気ガス浄化装置
DE102010064020B4 (de) * 2010-12-23 2013-03-07 Bosch Emission Systems Gmbh & Co. Kg Abgasanlage und Aufheizverfahren
JP5790545B2 (ja) * 2012-03-05 2015-10-07 三菱自動車工業株式会社 触媒診断装置及び触媒診断方法
US10604283B2 (en) 2017-05-26 2020-03-31 Frito-Lay North America, Inc. Former assembly with improved center of gravity

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Publication number Priority date Publication date Assignee Title
JPH08100632A (ja) * 1994-09-30 1996-04-16 Suzuki Motor Corp 内燃機関の排気浄化装置
JP2000002133A (ja) 1998-06-17 2000-01-07 Nissan Motor Co Ltd 内燃機関の排気浄化装置
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US7703275B2 (en) * 2003-12-01 2010-04-27 Toyota Jidosha Kabushiki Kaisha Exhaust purification device of compression ignition type internal combustion engine
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JPH08100632A (ja) * 1994-09-30 1996-04-16 Suzuki Motor Corp 内燃機関の排気浄化装置
JP3470597B2 (ja) 1998-06-15 2003-11-25 日産自動車株式会社 内燃機関の排気浄化装置
JP2000002133A (ja) 1998-06-17 2000-01-07 Nissan Motor Co Ltd 内燃機関の排気浄化装置
JP2002242665A (ja) 2001-02-21 2002-08-28 Mazda Motor Corp エンジンの排気浄化装置
JP2004036543A (ja) * 2002-07-04 2004-02-05 Mitsubishi Fuso Truck & Bus Corp 内燃機関の排気浄化装置
JP2005127257A (ja) 2003-10-24 2005-05-19 Toyota Motor Corp 内燃機関の排気浄化装置
JP2005264868A (ja) * 2004-03-19 2005-09-29 Toyota Motor Corp ディーゼル排ガス浄化装置
JP2006329020A (ja) * 2005-05-25 2006-12-07 Hino Motors Ltd エンジンの排ガス浄化装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2177730A4 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010082493A1 (ja) * 2009-01-16 2010-07-22 トヨタ自動車株式会社 内燃機関の排気浄化装置
US8539757B2 (en) 2009-01-16 2013-09-24 Toyota Jidosha Kabushiki Kaisha Exhaust purification apparatus for internal combustion engine
JP2012516966A (ja) * 2009-02-06 2012-07-26 ダイムラー・アクチェンゲゼルシャフト 排気ガス浄化装置付き内燃機関の作動方法
US20120304627A1 (en) * 2011-06-06 2012-12-06 GM Global Technology Operations LLC Electronically heated hydrocarbon (hc) adsorber
US8973349B2 (en) * 2011-06-06 2015-03-10 GM Global Technology Operations LLC Electronically heated hydrocarbon (HC) adsorber
RU2600196C2 (ru) * 2012-03-02 2016-10-20 Эмитек Гезельшафт Фюр Эмиссионстехнологи Мбх Способ эксплуатации нагревательного катализатора
JP2017190686A (ja) * 2016-04-12 2017-10-19 トヨタ自動車株式会社 内燃機関の排気浄化制御装置

Also Published As

Publication number Publication date
US8959897B2 (en) 2015-02-24
JP5093238B2 (ja) 2012-12-12
EP2177730A1 (en) 2010-04-21
US20100192544A1 (en) 2010-08-05
JPWO2009008450A1 (ja) 2010-09-09
EP2177730A4 (en) 2014-06-11

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