WO2008078645A1 - 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
WO2008078645A1
WO2008078645A1 PCT/JP2007/074526 JP2007074526W WO2008078645A1 WO 2008078645 A1 WO2008078645 A1 WO 2008078645A1 JP 2007074526 W JP2007074526 W JP 2007074526W WO 2008078645 A1 WO2008078645 A1 WO 2008078645A1
Authority
WO
WIPO (PCT)
Prior art keywords
nox
nox concentration
combustion engine
internal combustion
slip
Prior art date
Application number
PCT/JP2007/074526
Other languages
English (en)
French (fr)
Inventor
Hitoshi Yokomura
Original Assignee
Mitsubishi Fuso Truck And Bus Corporation
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 Mitsubishi Fuso Truck And Bus Corporation filed Critical Mitsubishi Fuso Truck And Bus Corporation
Publication of WO2008078645A1 publication Critical patent/WO2008078645A1/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
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/90—Injecting reactants
    • 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
    • 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
    • B01D2251/2062—Ammonia
    • 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
    • F01N2560/021—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor for measuring or detecting ammonia NH3
    • 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
    • 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
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits
    • F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
    • F01N2610/146—Control thereof, e.g. control of injectors or injection valves
    • 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
    • F01N2900/08—Parameters used for exhaust control or diagnosing said parameters being related to the engine
    • 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)
  • Health & Medical Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Combustion & Propulsion (AREA)
  • Toxicology (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

　ＮＯｘセンサを用いた簡単な構成且つ容易な制御によりＳＣＲ触媒におけるＮＯｘスリップ及びアンモニアスリップの判定を行うことのできる内燃機関の排気浄化装置を提供すること。 　ＳＣＲ触媒の排気下流側に設けられたＮＯｘセンサにより検出される実ＮＯｘ濃度Na1と予め設定された適正ＮＯｘ濃度Nrとの差であるＮＯｘ濃度偏差Ne1が所定値αより大となったとき、尿素水手添加量を所定量減少させ、当該尿素水手添加量減少後のＮＯｘ濃度偏差Ne2が減少前のＮＯｘ濃度偏差Ne1よりも大となった場合にはＮＯｘスリップと判定し、小となった場合にはアンモニアスリップと判定する。
PCT/JP2007/074526 2006-12-25 2007-12-20 内燃機関の排気浄化装置 WO2008078645A1 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006-347689 2006-12-25
JP2006347689A JP2008157136A (ja) 2006-12-25 2006-12-25 内燃機関の排気浄化装置

Publications (1)

Publication Number Publication Date
WO2008078645A1 true WO2008078645A1 (ja) 2008-07-03

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PCT/JP2007/074526 WO2008078645A1 (ja) 2006-12-25 2007-12-20 内燃機関の排気浄化装置

Country Status (2)

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JP (1) JP2008157136A (ja)
WO (1) WO2008078645A1 (ja)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010079621A1 (ja) * 2009-01-09 2010-07-15 トヨタ自動車株式会社 触媒通過成分判定装置および内燃機関の排気浄化装置
FR2945962A1 (fr) * 2009-05-29 2010-12-03 Peugeot Citroen Automobiles Sa Dispositif, vehicule comportant ce dispositif et procede de traitement des gaz d'echappement
CN106481409A (zh) * 2015-09-02 2017-03-08 迪尔公司 用于nox的自适应后处理控制的系统和方法
CN108371888A (zh) * 2018-03-13 2018-08-07 成都市润天祥环保科技有限公司 防止尿素过量喷射的scr脱硝系统控制方法

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5262640B2 (ja) * 2008-12-03 2013-08-14 トヨタ自動車株式会社 内燃機関の排気浄化装置
JP5155838B2 (ja) * 2008-12-05 2013-03-06 ボッシュ株式会社 還元剤噴射制御装置及び還元剤噴射装置の制御方法並びに内燃機関の排気浄化装置
US9255510B2 (en) * 2009-03-09 2016-02-09 GM Global Technology Operations LLC Ammonia (NH3) storage control system and method based on a nitrogen oxide(NOx) sensor
BR112012014614B1 (pt) * 2009-12-18 2020-12-08 Volvo Lastvagnar Ab método para controlar um nível de enchimento de um nível de tampão de redutor
EP2339136B1 (en) * 2009-12-23 2013-08-21 FPT Motorenforschung AG Method and device for controlling an scr catalytic converter of a vehicle
JP5462056B2 (ja) 2010-04-05 2014-04-02 ボッシュ株式会社 排気浄化システムの異常診断装置及び異常診断方法並びに排気浄化システム
JP2014005745A (ja) 2012-06-21 2014-01-16 Yanmar Co Ltd 尿素水噴射装置
FR3014483B1 (fr) * 2013-12-10 2016-01-22 Renault Sas Dispositif de sortie de gaz d'echappement pour vehicule automobile comportant un clapet externe de protection d'une sonde
CN106378006A (zh) * 2016-08-30 2017-02-08 华电电力科学研究院 Scr补nox控制氨逃逸的装置
JP6769861B2 (ja) * 2016-12-20 2020-10-14 日野自動車株式会社 尿素ｓｃｒシステムの制御装置および制御方法
JP6877138B2 (ja) * 2016-12-28 2021-05-26 ロベルト・ボッシュ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツングＲｏｂｅｒｔ Ｂｏｓｃｈ Ｇｍｂｈ 還元剤供給装置の制御装置
JP2019035379A (ja) * 2017-08-16 2019-03-07 いすゞ自動車株式会社 内燃機関の排気浄化装置

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1033948A (ja) * 1996-07-25 1998-02-10 Ngk Insulators Ltd 脱硝システム及び脱硝方法
JP2002273176A (ja) * 2001-03-16 2002-09-24 Tokyo Gas Co Ltd 還元剤添加量制御方法および装置
JP2003293743A (ja) * 2002-04-03 2003-10-15 Mitsubishi Fuso Truck & Bus Corp 内燃機関のＮＯｘ浄化装置
JP2004251134A (ja) * 2003-02-18 2004-09-09 Honda Motor Co Ltd 内燃機関の排気ガス浄化装置
JP2004324559A (ja) * 2003-04-25 2004-11-18 Nissan Motor Co Ltd エンジンの排気ガス浄化装置
JP2006090312A (ja) * 2004-09-25 2006-04-06 Robert Bosch Gmbh 内燃機関の運転方法およびその方法を実施する装置
JP2006125247A (ja) * 2004-10-27 2006-05-18 Hitachi Ltd エンジンの排気ガス浄化方法及び排気ガス浄化装置
JP2007327377A (ja) * 2006-06-07 2007-12-20 Hitachi Ltd 排気ガス浄化装置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1033948A (ja) * 1996-07-25 1998-02-10 Ngk Insulators Ltd 脱硝システム及び脱硝方法
JP2002273176A (ja) * 2001-03-16 2002-09-24 Tokyo Gas Co Ltd 還元剤添加量制御方法および装置
JP2003293743A (ja) * 2002-04-03 2003-10-15 Mitsubishi Fuso Truck & Bus Corp 内燃機関のＮＯｘ浄化装置
JP2004251134A (ja) * 2003-02-18 2004-09-09 Honda Motor Co Ltd 内燃機関の排気ガス浄化装置
JP2004324559A (ja) * 2003-04-25 2004-11-18 Nissan Motor Co Ltd エンジンの排気ガス浄化装置
JP2006090312A (ja) * 2004-09-25 2006-04-06 Robert Bosch Gmbh 内燃機関の運転方法およびその方法を実施する装置
JP2006125247A (ja) * 2004-10-27 2006-05-18 Hitachi Ltd エンジンの排気ガス浄化方法及び排気ガス浄化装置
JP2007327377A (ja) * 2006-06-07 2007-12-20 Hitachi Ltd 排気ガス浄化装置

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010079621A1 (ja) * 2009-01-09 2010-07-15 トヨタ自動車株式会社 触媒通過成分判定装置および内燃機関の排気浄化装置
FR2945962A1 (fr) * 2009-05-29 2010-12-03 Peugeot Citroen Automobiles Sa Dispositif, vehicule comportant ce dispositif et procede de traitement des gaz d'echappement
CN106481409A (zh) * 2015-09-02 2017-03-08 迪尔公司 用于nox的自适应后处理控制的系统和方法
EP3139010A1 (en) * 2015-09-02 2017-03-08 Deere & Company System and method for adaptive aftetreatment control of nox
US9695727B2 (en) 2015-09-02 2017-07-04 Deere & Company System and method for adaptive aftertreatment control of NOx
CN106481409B (zh) * 2015-09-02 2020-06-23 迪尔公司 用于nox的自适应后处理控制的系统和方法
CN108371888A (zh) * 2018-03-13 2018-08-07 成都市润天祥环保科技有限公司 防止尿素过量喷射的scr脱硝系统控制方法

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