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WO2009008150A1 - 排気浄化装置 - Google Patents

排気浄化装置 Download PDF

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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
Application number
PCT/JP2008/001797
Other languages
English (en)
French (fr)
Inventor
Masahiko Yabe
Haruyuki Yokota
Takaharu Shimizu
Hiroyuki Ninomiya
Shinya Sato
Takeshi Kaneda
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.
Publication of WO2009008150A1 publication Critical patent/WO2009008150A1/ja

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]
    • 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

　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の途中に酸素共存下でも選択的にＮＯxをアンモニアと反応させ得る選択還元型触媒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を還元浄化するようにした排気浄化装置に関し、尿素水６の添加位置より上流の排気管４に、酸化触媒９を前段に付帯装備したパティキュレートフィルタ１０を配設すると共に、該パティキュレートフィルタ１０と前記尿素水６の添加位置との間に、前記選択還元型触媒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を前記選択還元型触媒５の活性下限温度に近い温度で放出する性質を備えたＮＯx吸着触媒１７を配設する。
PCT/JP2008/001797 2007-07-06 2008-07-04 排気浄化装置 WO2009008150A1 (ja)

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 (ja) 2009-01-15

Family

ID=40228343

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/001797 WO2009008150A1 (ja) 2007-07-06 2008-07-04 排気浄化装置

Country Status (2)

Country Link
JP (1) JP2009013932A (ja)
WO (1) WO2009008150A1 (ja)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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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