WO2009063864A1 - 内燃機関の排気浄化システム - Google Patents

内燃機関の排気浄化システム Download PDF

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Publication number
WO2009063864A1
WO2009063864A1 PCT/JP2008/070503 JP2008070503W WO2009063864A1 WO 2009063864 A1 WO2009063864 A1 WO 2009063864A1 JP 2008070503 W JP2008070503 W JP 2008070503W WO 2009063864 A1 WO2009063864 A1 WO 2009063864A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
fuel ratio
nox catalyst
internal combustion
nox
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/JP2008/070503
Other languages
English (en)
French (fr)
Inventor
Koichiro Nakatani
Terutoshi Tomoda
Shinobu Ishiyama
Tomoyuki Ono
Tomoyuki Kogo
Katsuhiro Ito
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 EP08848769.9A priority Critical patent/EP2211037B1/en
Priority to CN200880113562XA priority patent/CN101842562B/zh
Priority to US12/740,250 priority patent/US8418446B2/en
Publication of WO2009063864A1 publication Critical patent/WO2009063864A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D41/0047—Controlling exhaust gas recirculation [EGR]
    • F02D41/005—Controlling exhaust gas recirculation [EGR] according to engine operating conditions
    • F02D41/0055—Special engine operating conditions, e.g. for regeneration of exhaust gas treatment apparatus
    • 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
    • F01N13/009—Exhaust or silencing apparatus characterised by constructional features 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
    • F01N3/0828—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
    • F01N3/105—General auxiliary catalysts, e.g. upstream or downstream of the main catalyst
    • F01N3/106—Auxiliary oxidation catalysts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D41/0047—Controlling exhaust gas recirculation [EGR]
    • F02D41/005—Controlling exhaust gas recirculation [EGR] according to engine operating conditions
    • F02D41/0052—Feedback control of engine parameters, e.g. for control of air/fuel ratio or intake air amount
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/021—Introducing corrections for particular conditions exterior to the engine
    • F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
    • F02D41/027—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus
    • F02D41/0275—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus the exhaust gas treating apparatus being a NOx trap or adsorbent
    • 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
    • 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
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/08—Exhaust gas treatment apparatus parameters
    • F02D2200/0802—Temperature of the exhaust gas treatment apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2250/00—Engine control related to specific problems or objectives
    • F02D2250/38—Control for minimising smoke emissions, e.g. by applying smoke limitations on the fuel injection 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
    • Y02T10/40—Engine management systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

　本発明は、内燃機関の排気浄化システムにおいて、ＮＯｘ触媒に吸蔵されたＮＯｘをより好適に還元させることが出来る技術を提供することを目的とする。本発明では、ＮＯｘ触媒に吸蔵されたＮＯｘを還元させるときに、内燃機関から排出される排気の空燃比を低下させることによりＮＯｘ触媒の周囲雰囲気の空燃比を目標空燃比まで低下させる。このとき、ＮＯｘ触媒の温度が所定温度以上の場合は、燃焼状態を低温燃焼としつつＮＯｘ触媒の周囲雰囲気の空燃比を目標空燃比まで低下させる（Ｓ１０４、Ｓ１０５）。一方、ＮＯｘ触媒の温度が所定温度より低い場合は、気筒内のＥＧＲガスの量をスモークの発生量が許容範囲内となるように減少させつつ、ＮＯｘ触媒の周囲雰囲気の空燃比を目標空燃比まで低下させる（Ｓ１０７、Ｓ１０５）。
PCT/JP2008/070503 2007-11-13 2008-11-11 内燃機関の排気浄化システム Ceased WO2009063864A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP08848769.9A EP2211037B1 (en) 2007-11-13 2008-11-11 Exhaust gas purification system for internal combustion engine
CN200880113562XA CN101842562B (zh) 2007-11-13 2008-11-11 内燃机的排气净化系统
US12/740,250 US8418446B2 (en) 2007-11-13 2008-11-11 Exhaust gas purification system for internal combustion engine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007294706A JP4905327B2 (ja) 2007-11-13 2007-11-13 内燃機関の排気浄化システム
JP2007-294706 2007-11-13

Publications (1)

Publication Number Publication Date
WO2009063864A1 true WO2009063864A1 (ja) 2009-05-22

Family

ID=40638713

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/070503 Ceased WO2009063864A1 (ja) 2007-11-13 2008-11-11 内燃機関の排気浄化システム

Country Status (5)

Country Link
US (1) US8418446B2 (ja)
EP (1) EP2211037B1 (ja)
JP (1) JP4905327B2 (ja)
CN (1) CN101842562B (ja)
WO (1) WO2009063864A1 (ja)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011055435A1 (ja) 2009-11-04 2011-05-12 トヨタ自動車株式会社 内燃機関のｅｇｒ制御システム
JP6128122B2 (ja) * 2012-06-01 2017-05-17 トヨタ自動車株式会社 内燃機関の排気浄化装置
EP3362663B1 (en) * 2015-10-14 2026-03-11 Cummins, Inc. Reference value engine control systems and methods
JP2019157667A (ja) * 2018-03-08 2019-09-19 いすゞ自動車株式会社 排気浄化装置、車両および排気浄化制御装置
JP7208046B2 (ja) * 2019-02-08 2023-01-18 株式会社豊田自動織機 排気浄化装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11153049A (ja) * 1997-09-16 1999-06-08 Toyota Motor Corp 圧縮着火式内燃機関
JP2000130154A (ja) * 1998-10-20 2000-05-09 Toyota Motor Corp 内燃機関
JP2000145547A (ja) * 1998-11-05 2000-05-26 Toyota Motor Corp 内燃機関
JP2004245046A (ja) 2003-02-10 2004-09-02 Nissan Motor Co Ltd 内燃機関の排気浄化装置
JP2004360484A (ja) 2003-06-02 2004-12-24 Mitsubishi Fuso Truck & Bus Corp ＮＯｘパージ制御装置

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3061019B2 (ja) * 1997-08-04 2000-07-10 トヨタ自動車株式会社 内燃機関
JP3334596B2 (ja) * 1998-03-17 2002-10-15 トヨタ自動車株式会社 圧縮着火式内燃機関
JP3405183B2 (ja) * 1998-03-30 2003-05-12 トヨタ自動車株式会社 圧縮着火式内燃機関
EP0952321B1 (en) * 1998-04-15 2004-08-25 Toyota Jidosha Kabushiki Kaisha Internal combustion engine
US6152118A (en) * 1998-06-22 2000-11-28 Toyota Jidosha Kabushiki Kaisha Internal combustion engine
US6209515B1 (en) * 1998-07-15 2001-04-03 Toyota Jidosha Kabushiki Kaisha Internal combustion engine, controller and method
US6240721B1 (en) 1998-09-17 2001-06-05 Toyota Jidosha Kabushiki Kaisha Internal combustion engine and method for controlling an internal combustion engine
JP3549779B2 (ja) * 1999-09-17 2004-08-04 日野自動車株式会社 内燃機関
JP2003138952A (ja) * 2001-11-05 2003-05-14 Mitsubishi Motors Corp ディーゼル機関
JP3820990B2 (ja) * 2002-01-07 2006-09-13 日産自動車株式会社 内燃機関の排気浄化装置
DE602004012986T2 (de) * 2004-06-15 2009-06-04 C.R.F. Società Consortile per Azioni, Orbassano Verfahren und Einrichtung zur Bestimmung der Ansaugluftmenge einer Brennkraftmaschine basierend auf der Messung der Sauerstoffkonzentration in einem der Brennkraftmaschine zugeführten Gasgemisch
US7533518B2 (en) 2005-05-12 2009-05-19 Ford Global Technologies, Llc System and method for reducing NOx emissions in an apparatus having a diesel engine
GB2434406A (en) * 2005-08-25 2007-07-25 Ford Global Tech Llc I.c. engine exhaust gas recirculation (EGR) system with dual high pressure and low pressure EGR loops
US7367188B2 (en) * 2006-07-28 2008-05-06 Ford Global Technologies, Llc System and method for diagnostic of low pressure exhaust gas recirculation system and adapting of measurement devices
EP2292913B1 (en) * 2005-12-20 2015-11-11 BorgWarner Inc. Controlling exhaust gas recirculation in a turbocharged engine system
JP4797880B2 (ja) * 2006-04-25 2011-10-19 株式会社デンソー 内燃機関用排気ガス浄化装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11153049A (ja) * 1997-09-16 1999-06-08 Toyota Motor Corp 圧縮着火式内燃機関
JP2000130154A (ja) * 1998-10-20 2000-05-09 Toyota Motor Corp 内燃機関
JP2000145547A (ja) * 1998-11-05 2000-05-26 Toyota Motor Corp 内燃機関
JP2004245046A (ja) 2003-02-10 2004-09-02 Nissan Motor Co Ltd 内燃機関の排気浄化装置
JP2004360484A (ja) 2003-06-02 2004-12-24 Mitsubishi Fuso Truck & Bus Corp ＮＯｘパージ制御装置

Also Published As

Publication number Publication date
EP2211037A1 (en) 2010-07-28
EP2211037B1 (en) 2018-12-26
CN101842562B (zh) 2013-03-27
US8418446B2 (en) 2013-04-16
JP2009121289A (ja) 2009-06-04
JP4905327B2 (ja) 2012-03-28
CN101842562A (zh) 2010-09-22
US20100229536A1 (en) 2010-09-16
EP2211037A4 (en) 2017-05-17

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