DE69713649D1 - Vorrichtung zum Feststellen der Verschlechterung eines Dreiwegkatalysators für eine Brennkraftmaschine - Google Patents

Vorrichtung zum Feststellen der Verschlechterung eines Dreiwegkatalysators für eine Brennkraftmaschine

Info

Publication number
DE69713649D1
DE69713649D1 DE69713649T DE69713649T DE69713649D1 DE 69713649 D1 DE69713649 D1 DE 69713649D1 DE 69713649 T DE69713649 T DE 69713649T DE 69713649 T DE69713649 T DE 69713649T DE 69713649 D1 DE69713649 D1 DE 69713649D1
Authority
DE
Germany
Prior art keywords
deterioration
determining
combustion engine
internal combustion
catalytic converter
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.)
Expired - Lifetime
Application number
DE69713649T
Other languages
English (en)
Other versions
DE69713649T2 (de
Inventor
Noritake Mitsutani
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
Priority claimed from JP8060933A external-priority patent/JPH09250334A/ja
Priority claimed from JP21270296A external-priority patent/JP3307236B2/ja
Application filed by Toyota Motor Corp filed Critical Toyota Motor Corp
Application granted granted Critical
Publication of DE69713649D1 publication Critical patent/DE69713649D1/de
Publication of DE69713649T2 publication Critical patent/DE69713649T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
    • F01N11/007—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring oxygen or air concentration downstream of the exhaust 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
    • F01N2550/00—Monitoring or diagnosing the deterioration of exhaust systems
    • F01N2550/02—Catalytic activity of 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)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
DE69713649T 1996-03-18 1997-03-17 Vorrichtung zum Feststellen der Verschlechterung eines Dreiwegkatalysators für eine Brennkraftmaschine Expired - Lifetime DE69713649T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP8060933A JPH09250334A (ja) 1996-03-18 1996-03-18 内燃機関の触媒劣化判別装置
JP21270296A JP3307236B2 (ja) 1996-08-12 1996-08-12 内燃機関の触媒劣化判別装置

Publications (2)

Publication Number Publication Date
DE69713649D1 true DE69713649D1 (de) 2002-08-08
DE69713649T2 DE69713649T2 (de) 2002-11-07

Family

ID=26401988

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69713649T Expired - Lifetime DE69713649T2 (de) 1996-03-18 1997-03-17 Vorrichtung zum Feststellen der Verschlechterung eines Dreiwegkatalysators für eine Brennkraftmaschine

Country Status (3)

Country Link
US (1) US5887421A (de)
EP (1) EP0796985B1 (de)
DE (1) DE69713649T2 (de)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3336854B2 (ja) * 1996-04-11 2002-10-21 トヨタ自動車株式会社 内燃機関の触媒劣化判別装置
US6026639A (en) * 1997-11-03 2000-02-22 Engelhard Corporation Apparatus and method for diagnosis of catalyst performance
JP3500941B2 (ja) * 1997-12-26 2004-02-23 日産自動車株式会社 排気浄化装置の診断装置
DE19828609A1 (de) * 1998-06-26 1999-12-30 Siemens Ag Verfahren zur Regeneration eines NO¶x¶-Speicherkatalysators für eine Brennkraftmaschine
JP3799824B2 (ja) * 1998-06-26 2006-07-19 日産自動車株式会社 内燃機関の排気浄化装置
JP3618598B2 (ja) * 1999-06-03 2005-02-09 本田技研工業株式会社 内燃機関の排気浄化装置
US6195986B1 (en) * 1999-06-21 2001-03-06 Ford Global Technologies, Inc. Method and system for monitoring a catalytic converter
JP2001098981A (ja) * 1999-09-30 2001-04-10 Toyota Motor Corp 内燃機関の触媒劣化判定装置
FR2808561B1 (fr) * 2000-05-05 2002-07-19 Sagem Dispositif et procede de detection de la degradation d'un convertisseur catalytique
JP4457464B2 (ja) * 2000-06-01 2010-04-28 トヨタ自動車株式会社 触媒劣化検出装置
US6564543B1 (en) * 2001-04-07 2003-05-20 Ford Global Technologies, Llc System and method for monitoring a conditioning catalyst
US6453666B1 (en) * 2001-06-19 2002-09-24 Ford Global Technologies, Inc. Method and system for reducing vehicle tailpipe emissions when operating lean
JP2003193898A (ja) * 2001-12-25 2003-07-09 Honda Motor Co Ltd 内燃機関の排気ガス浄化装置の劣化判別装置
DE102004010344A1 (de) * 2003-03-04 2004-10-14 Denso Corp., Kariya Sekundärluftzufuhrsteuerungsvorrichtung für eine Brennkraftmaschine
JP4092486B2 (ja) * 2003-04-02 2008-05-28 日産自動車株式会社 内燃機関の排気後処理装置の診断装置
JP4345629B2 (ja) * 2004-09-29 2009-10-14 日産自動車株式会社 エンジンの空燃比制御装置
JP4315088B2 (ja) * 2004-09-29 2009-08-19 日産自動車株式会社 エンジンの空燃比制御装置
JP4371027B2 (ja) * 2004-09-29 2009-11-25 日産自動車株式会社 エンジンの空燃比制御装置
US7181331B2 (en) * 2004-09-29 2007-02-20 Nissan Motor Co., Ltd. Engine air-fuel ratio control system
JP4924646B2 (ja) * 2009-03-31 2012-04-25 株式会社デンソー 内燃機関の排気浄化装置
US9657678B2 (en) * 2015-04-07 2017-05-23 General Electric Company Systems and methods for using transport time to estimate engine aftertreatment system characteristics

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2570930B2 (ja) * 1991-10-11 1997-01-16 トヨタ自動車株式会社 内燃機関の触媒劣化判別装置
JPH0598947A (ja) * 1991-10-11 1993-04-20 Toyota Motor Corp 内燃機関の触媒劣化判別装置
JP2626384B2 (ja) * 1991-12-16 1997-07-02 トヨタ自動車株式会社 触媒劣化判別装置
JPH05263686A (ja) * 1992-03-23 1993-10-12 Toyota Motor Corp 内燃機関の触媒劣化判別装置
IT1257100B (it) * 1992-09-14 1996-01-05 Fiat Auto Spa Sistema di monitoraggio dell'efficienza di un catalizzatore, particolarmente per autoveicoli.
US5417058A (en) * 1992-09-30 1995-05-23 Toyota Jidosha Kabushiki Kaisha Device for detecting deterioration of a catalytic converter for an engine
US5363647A (en) * 1992-10-13 1994-11-15 Mitsubishi Denki Kabushiki Kaisha Dual-sensor type air fuel ratio control system for internal combustion engine and catalytic converter diagnosis apparatus for the same
JP2626433B2 (ja) * 1992-12-09 1997-07-02 トヨタ自動車株式会社 触媒劣化検出装置
JP2624107B2 (ja) * 1992-12-09 1997-06-25 トヨタ自動車株式会社 触媒劣化検出装置
US5724809A (en) * 1995-06-12 1998-03-10 Toyota Jidosha Kabushiki Kaisha Device for determining deterioration of a catalytic converter for an engine
EP1236873B1 (de) * 1995-10-26 2005-02-09 Toyota Jidosha Kabushiki Kaisha Feststellungsvorrichtung der Katalysatorverschlechterung einer Brennkraftmaschine
JP3196606B2 (ja) * 1995-10-26 2001-08-06 トヨタ自動車株式会社 内燃機関の触媒劣化判定装置

Also Published As

Publication number Publication date
DE69713649T2 (de) 2002-11-07
US5887421A (en) 1999-03-30
EP0796985B1 (de) 2002-07-03
EP0796985A1 (de) 1997-09-24

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Legal Events

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Free format text: DER VERTRETER IST ZU AENDERN IN: TIEDTKE, BUEHLING, KINNE & PARTNER GBR, 80336 MUENCHEN

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