WO2008126648A1 - ＮＯｘ浄化システム及びＮＯｘ浄化システムの制御方法 - Google Patents

ＮＯｘ浄化システム及びＮＯｘ浄化システムの制御方法 Download PDF

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Publication number
WO2008126648A1
WO2008126648A1 PCT/JP2008/054976 JP2008054976W WO2008126648A1 WO 2008126648 A1 WO2008126648 A1 WO 2008126648A1 JP 2008054976 W JP2008054976 W JP 2008054976W WO 2008126648 A1 WO2008126648 A1 WO 2008126648A1
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WO
WIPO (PCT)
Prior art keywords
nox
conversion system
nox conversion
ammonia
catalyst
Prior art date
Application number
PCT/JP2008/054976
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English (en)
French (fr)
Inventor
Tetsuya Fujita
Original Assignee
Isuzu Motors Limited
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 Isuzu Motors Limited filed Critical Isuzu Motors Limited
Publication of WO2008126648A1 publication Critical patent/WO2008126648A1/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]
    • F01N3/208—Control of selective catalytic reduction [SCR], e.g. dosing of reducing agent
    • 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
    • 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
    • B01D53/9495—Controlling the catalytic process
    • 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
    • F01N3/10—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
    • F01N3/105—General auxiliary catalysts, e.g. upstream or downstream of the main catalyst
    • F01N3/106—Auxiliary oxidation catalysts
    • 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
    • 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
    • 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
    • B01D53/9459—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
    • F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
    • F01N2560/02—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor
    • F01N2560/026—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor for measuring or detecting NOx
    • 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
    • F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
    • F01N2560/14—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics having more than one sensor of one kind
    • 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
    • F01N2900/1402—Exhaust gas composition
    • 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
    • F01N2900/1622—Catalyst reducing agent absorption capacity or consumption amount
    • 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)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Toxicology (AREA)
  • Materials Engineering (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)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Treating Waste Gases (AREA)

Abstract

　上流側の酸化触媒４と下流側の選択的還元ＮＯｘ触媒６を備え、選択還元型ＮＯｘ触媒６にＮＯｘの還元に用いるアンモニア系溶液を供給して排気ガス中のＮＯｘを浄化するＮＯｘ浄化システム１及びＮＯｘ浄化システムの制御方法において、供給量制御装置５が、酸化触媒４におけるＮＯｘ吸着推定量Ｎｅを算出し、このＮＯｘ吸着推定量Ｎｅに応じて、アンモニア系溶液の供給量Ｙを制御する。これにより、アンモニア系溶液を選択還元型ＮＯｘ触媒６に対して過不足なく供給して、アンモニアとＮＯｘの両方の大気中への排出を防止する。
PCT/JP2008/054976 2007-04-11 2008-03-18 ＮＯｘ浄化システム及びＮＯｘ浄化システムの制御方法 WO2008126648A1 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007103530A JP4179386B2 (ja) 2007-04-11 2007-04-11 ＮＯｘ浄化システム及びＮＯｘ浄化システムの制御方法
JP2007-103530 2007-04-11

Publications (1)

Publication Number Publication Date
WO2008126648A1 true WO2008126648A1 (ja) 2008-10-23

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Country Status (2)

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JP (1) JP4179386B2 (ja)
WO (1) WO2008126648A1 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010112345A (ja) * 2008-11-10 2010-05-20 Mitsubishi Motors Corp 排気浄化装置
US9494070B2 (en) 2014-09-17 2016-11-15 Hyundai Motor Company Method of controlling ammonia amount absorbed in selective catalytic reduction catalyst and exhaust system using the same

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5158214B2 (ja) * 2009-01-09 2013-03-06 トヨタ自動車株式会社 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
JP5476770B2 (ja) * 2009-04-03 2014-04-23 いすゞ自動車株式会社 排気ガス浄化システム及び排気ガス浄化システムの制御方法
JP4924756B2 (ja) * 2009-05-07 2012-04-25 トヨタ自動車株式会社 内燃機関の排気浄化装置
JP5398372B2 (ja) 2009-06-18 2014-01-29 Ｕｄトラックス株式会社 エンジンの排気浄化装置
JP5375462B2 (ja) * 2009-09-09 2013-12-25 いすゞ自動車株式会社 Ｎｏ酸化触媒の劣化検出装置および方法
JP5553630B2 (ja) * 2010-02-09 2014-07-16 本田技研工業株式会社 内燃機関の排気浄化装置
JP2011196311A (ja) * 2010-03-23 2011-10-06 Mazda Motor Corp 排気浄化方法及び排気浄化装置
WO2011118095A1 (ja) 2010-03-25 2011-09-29 Ｕｄトラックス株式会社 エンジンの排気浄化装置及びエンジンの排気浄化方法
US20110265455A1 (en) * 2010-04-28 2011-11-03 Toyota Jidosha Kabushiki Kaisha Ammonia burning internal combustion engine
JP5333664B2 (ja) 2010-05-14 2013-11-06 トヨタ自動車株式会社 内燃機関の排気浄化装置
JP5837312B2 (ja) * 2011-03-10 2015-12-24 本田技研工業株式会社 内燃機関の排気浄化システム
JP5751345B2 (ja) * 2012-08-30 2015-07-22 トヨタ自動車株式会社 内燃機関の添加剤供給装置
US10124325B2 (en) * 2013-03-14 2018-11-13 Johnson Matthey Public Limited Company Cerium-modified manganese octahedral molecular sieves as catalysts for selective catalytic reduction

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63236522A (ja) * 1987-03-23 1988-10-03 ダブリユー・アール・グレイス・アンド・カンパニー−コネチカツト 流体流からＮＯｘを除去する方法
JP2003236343A (ja) * 2002-02-12 2003-08-26 Babcock Hitachi Kk 排気ガスの浄化方法および低温脱硝装置
JP2005201282A (ja) * 2005-03-24 2005-07-28 Toyota Motor Corp 内燃機関の排気浄化装置
JP2005240811A (ja) * 2005-03-24 2005-09-08 Toyota Motor Corp 内燃機関の排気浄化装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63236522A (ja) * 1987-03-23 1988-10-03 ダブリユー・アール・グレイス・アンド・カンパニー−コネチカツト 流体流からＮＯｘを除去する方法
JP2003236343A (ja) * 2002-02-12 2003-08-26 Babcock Hitachi Kk 排気ガスの浄化方法および低温脱硝装置
JP2005201282A (ja) * 2005-03-24 2005-07-28 Toyota Motor Corp 内燃機関の排気浄化装置
JP2005240811A (ja) * 2005-03-24 2005-09-08 Toyota Motor Corp 内燃機関の排気浄化装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010112345A (ja) * 2008-11-10 2010-05-20 Mitsubishi Motors Corp 排気浄化装置
US9494070B2 (en) 2014-09-17 2016-11-15 Hyundai Motor Company Method of controlling ammonia amount absorbed in selective catalytic reduction catalyst and exhaust system using the same

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Publication number Publication date
JP2008261253A (ja) 2008-10-30
JP4179386B2 (ja) 2008-11-12

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