WO2009008148A1 - 排気浄化装置 - Google Patents

排気浄化装置 Download PDF

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Publication number
WO2009008148A1
WO2009008148A1 PCT/JP2008/001795 JP2008001795W WO2009008148A1 WO 2009008148 A1 WO2009008148 A1 WO 2009008148A1 JP 2008001795 W JP2008001795 W JP 2008001795W WO 2009008148 A1 WO2009008148 A1 WO 2009008148A1
Authority
WO
WIPO (PCT)
Prior art keywords
exhaust
addition
nox
selective reduction
temperature
Prior art date
Application number
PCT/JP2008/001795
Other languages
English (en)
French (fr)
Inventor
Masahiko Yabe
Haruyuki Yokota
Takaharu Shimizu
Hiroyuki Ninomiya
Shinya Sato
Takahiko Hayashi
Shunsuke Toshioka
Satoshi Watanabe
Tomihisa Oda
Yutaka Tanai
Original Assignee
Hino Motors, Ltd.
Toyota Jidosha Kabushiki Kaisha
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 Hino Motors, Ltd., Toyota Jidosha Kabushiki Kaisha filed Critical Hino Motors, Ltd.
Priority to EP08776804.0A priority Critical patent/EP2172627B1/en
Priority to US12/667,767 priority patent/US9683471B2/en
Publication of WO2009008148A1 publication Critical patent/WO2009008148A1/ja

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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
    • B01D53/92—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
    • 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
    • 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
    • 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
    • F01N3/103—Oxidation catalysts for HC and CO only
    • 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
    • F01N9/00—Electrical control of exhaust gas treating apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/20—Reductants
    • B01D2251/206—Ammonium compounds
    • B01D2251/2067—Urea
    • 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
    • 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
    • F01N2570/14—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
    • 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
    • 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
    • F01N2900/14—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust gas
    • F01N2900/1404—Exhaust gas temperature
    • 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
    • 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
    • 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
    • Y02T10/40—Engine management systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (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)
  • Materials Engineering (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Processes For Solid Components From Exhaust (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

　本発明の課題は、長時間のエンジン停止後の始動時等に支障をきたすことなく、従来より低い排気温度から良好なＮＯx低減効果が得られるようにすることにある。排気管４の途中に選択還元型触媒５を設け且つ該選択還元型触媒５より上流側の排気管４内に還元剤として尿素水６を添加してＮＯxを還元浄化する排気浄化装置に関し、尿素水６の添加位置より上流側の排気管４に選択還元型触媒５の活性下限温度よりも低い温度で排気ガス３中のＮＯxを物理的に吸着し且つその吸着ＮＯxを自身の活性下限温度より高い温度で放出する性質を備えた酸化触媒９を設け、該酸化触媒９より上流側で排気ガス３中に燃料を添加する燃料添加手段（燃料噴射装置１４）を設け、選択還元型触媒５入側の排気温度が酸化触媒９の活性下限温度と同程度の設定温度に上昇するまで燃料添加の開始を保留し得るように構成する。
PCT/JP2008/001795 2007-07-06 2008-07-04 排気浄化装置 WO2009008148A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP08776804.0A EP2172627B1 (en) 2007-07-06 2008-07-04 Exhaust emission control device
US12/667,767 US9683471B2 (en) 2007-07-06 2008-07-04 Exhaust emission control device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-178712 2007-07-06
JP2007178712A JP5000405B2 (ja) 2007-07-06 2007-07-06 排気浄化装置

Publications (1)

Publication Number Publication Date
WO2009008148A1 true WO2009008148A1 (ja) 2009-01-15

Family

ID=40228341

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/001795 WO2009008148A1 (ja) 2007-07-06 2008-07-04 排気浄化装置

Country Status (4)

Country Link
US (1) US9683471B2 (ja)
EP (1) EP2172627B1 (ja)
JP (1) JP5000405B2 (ja)
WO (1) WO2009008148A1 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103502591A (zh) * 2011-04-28 2014-01-08 丰田自动车株式会社 内燃机的排气净化装置
CN109759035A (zh) * 2019-03-12 2019-05-17 清华大学 NOx吸附剂及其制备方法和应用

Families Citing this family (19)

* Cited by examiner, † Cited by third party
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JP4949151B2 (ja) * 2007-07-20 2012-06-06 三菱ふそうトラック・バス株式会社 内燃機関の排気浄化装置
JP4949152B2 (ja) * 2007-07-20 2012-06-06 三菱ふそうトラック・バス株式会社 内燃機関の排気浄化装置
JP5062539B2 (ja) * 2009-01-13 2012-10-31 トヨタ自動車株式会社 内燃機関の排気浄化装置
US9308496B2 (en) * 2010-04-23 2016-04-12 General Electric Company System and method for controlling and reducing NOx emissions
EP2570625B1 (en) 2010-05-12 2016-03-30 Toyota Jidosha Kabushiki Kaisha Exhaust gas purification system for internal combustion engine
FR2970298B1 (fr) * 2011-01-11 2015-07-17 Peugeot Citroen Automobiles Sa Ligne d'echappement de gaz d'echappement d'un moteur a combustion interne et vehicule correspondant
US8984870B2 (en) 2011-02-22 2015-03-24 GM Global Technology Operations LLC Low temperature NOx storage system for lean exhaust aftertreatment
JP5864901B2 (ja) * 2011-05-19 2016-02-17 日野自動車株式会社 パティキュレートフィルタの手動再生方法
US8635862B2 (en) * 2012-03-13 2014-01-28 GM Global Technology Operations LLC Control system for reducing nitrous oxide (“N2O”) after selective catalytic reduction (“SCR”) device light-off
JP5915516B2 (ja) * 2012-12-25 2016-05-11 トヨタ自動車株式会社 内燃機関の排気浄化装置
US9394822B2 (en) * 2013-07-15 2016-07-19 Ford Global Technologies, Llc Emission control system including an oxidation catalyst and selective catalytic reduction catalyst
FR3017901B1 (fr) * 2014-02-24 2016-03-04 Peugeot Citroen Automobiles Sa Systeme de gestion de diagnostics embarques associe a une ligne d'echappement de gaz d'echappement d'un vehicule automobile
DE102014210661A1 (de) * 2014-06-04 2015-12-17 Thyssenkrupp Ag Verringerung der Emission von Stickoxiden beim Anfahren von Anlagen zur Herstellung von Salpetersäure
GB2529183B (en) * 2014-08-12 2018-04-04 Jaguar Land Rover Ltd Engine exhaust system and control system for an engine exhaust system
GB2533376A (en) * 2014-12-18 2016-06-22 Gm Global Tech Operations Llc A method of operating an internal combustion engine
WO2018025827A1 (ja) * 2016-08-04 2018-02-08 エヌ・イーケムキャット株式会社 コールドスタート対応尿素ｓｃｒシステム
KR101865744B1 (ko) 2016-11-17 2018-06-08 현대자동차 주식회사 배기가스 정화장치
JP7273868B2 (ja) * 2021-01-14 2023-05-15 ジョンソン、マッセイ、パブリック、リミテッド、カンパニー ディーゼルエンジンのための排気システム
CN114922719B (zh) * 2022-05-10 2024-02-20 潍柴动力股份有限公司 Scr反应器温度的控制方法、装置、计算机可读存储介质

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JP2002161732A (ja) 2000-11-30 2002-06-07 Hino Motors Ltd 排気浄化装置
JP2005256727A (ja) * 2004-03-11 2005-09-22 Nissan Diesel Motor Co Ltd エンジンの排気浄化装置
JP2007154755A (ja) * 2005-12-05 2007-06-21 Toyota Motor Corp 内燃機関の排気浄化システム

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103502591A (zh) * 2011-04-28 2014-01-08 丰田自动车株式会社 内燃机的排气净化装置
CN109759035A (zh) * 2019-03-12 2019-05-17 清华大学 NOx吸附剂及其制备方法和应用
CN109759035B (zh) * 2019-03-12 2020-06-02 清华大学 NOx吸附剂及其制备方法和应用

Also Published As

Publication number Publication date
EP2172627A1 (en) 2010-04-07
EP2172627A4 (en) 2013-06-19
EP2172627B1 (en) 2014-11-19
JP2009013931A (ja) 2009-01-22
JP5000405B2 (ja) 2012-08-15
US20100192547A1 (en) 2010-08-05
US9683471B2 (en) 2017-06-20

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