IT1263842B - Procedimento e dispositivo per riconoscere lo stato di un catalizzatore - Google Patents

Procedimento e dispositivo per riconoscere lo stato di un catalizzatore

Info

Publication number
IT1263842B
IT1263842B ITMI930608A ITMI930608A IT1263842B IT 1263842 B IT1263842 B IT 1263842B IT MI930608 A ITMI930608 A IT MI930608A IT MI930608 A ITMI930608 A IT MI930608A IT 1263842 B IT1263842 B IT 1263842B
Authority
IT
Italy
Prior art keywords
catalyst
oxygen
procedure
instant
quantities
Prior art date
Application number
ITMI930608A
Other languages
English (en)
Inventor
Frank Blischke
Eberhard Schnaibel
Original Assignee
Bosch Gmbh Robert
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 Bosch Gmbh Robert filed Critical Bosch Gmbh Robert
Publication of ITMI930608A0 publication Critical patent/ITMI930608A0/it
Publication of ITMI930608A1 publication Critical patent/ITMI930608A1/it
Application granted granted Critical
Publication of IT1263842B publication Critical patent/IT1263842B/it

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
    • F01N11/007—Monitoring or diagnostic devices for exhaust-gas treatment apparatus 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
    • 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
    • F01N2900/04—Methods of control or diagnosing
    • F01N2900/0422—Methods of control or diagnosing measuring the elapsed time
    • 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)
  • Exhaust Gas After Treatment (AREA)
  • Testing Of Engines (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

Vengono indicati un procedimento e un dispositivo per la diagnosi On Board di catalizzatori. A tale scopo il valore Lambda della miscela viene modulato selettivamente in modo che aumentano successivamente le quantità di eccesso e di difetto di ossigeno susseguentisi periodicamente L'istante in cui l'effetto di compensazione, combinato con la capacità di immagazzinamento dell'ossigeno di catalizzatore, sulle variazioni della concentrazione di ossigeno nei gas di scarico non è più sufficiente per compensare le citate quantità aumentate, e viene rivelato mediante la reazione brusca di una sondaLambda disposta a valle del catalizzatore. L'intervallo di tempo fra questo istante per l'avviamento dell'aumento viene utilizzato come misura per la capacità di conversione del catalizzatore.(Figura 1)
ITMI930608A 1992-04-03 1993-03-30 Procedimento e dispositivo per riconoscere lo stato di un catalizzatore IT1263842B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4211116A DE4211116A1 (de) 1992-04-03 1992-04-03 Verfahren und Vorrichtung zur Katalysatorzustandserkennung

Publications (3)

Publication Number Publication Date
ITMI930608A0 ITMI930608A0 (it) 1993-03-30
ITMI930608A1 ITMI930608A1 (it) 1994-09-30
IT1263842B true IT1263842B (it) 1996-09-04

Family

ID=6455919

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI930608A IT1263842B (it) 1992-04-03 1993-03-30 Procedimento e dispositivo per riconoscere lo stato di un catalizzatore

Country Status (4)

Country Link
JP (1) JPH0626330A (it)
DE (1) DE4211116A1 (it)
ES (1) ES2068751B1 (it)
IT (1) IT1263842B (it)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2998575B2 (ja) * 1994-10-20 2000-01-11 日産自動車株式会社 内燃機関の触媒劣化診断装置
DE4441432A1 (de) * 1994-11-22 1996-05-23 Roth Technik Gmbh Anordnung zur Überwachung der Funktionsfähigkeit von Katalysatoren und/oder Lambda-Sonden
US5845489A (en) * 1995-11-08 1998-12-08 Denso Corporation Abnormality detector for air-fuel ratio control system
DE19630940C2 (de) * 1996-07-31 1999-03-04 Siemens Ag Verfahren zur Überprüfung des Katalysatorwirkungsgrades
DE19801815A1 (de) * 1998-01-19 1999-07-22 Volkswagen Ag Mager-Regeneration von NOx-Speichern
DE19816175A1 (de) * 1998-04-14 1999-10-21 Degussa Verfahren zur Überprüfung der Funktionstüchtigkeit eines Stickoxid-Speicherkatalysators
US6244047B1 (en) * 1998-10-02 2001-06-12 Ford Global Technologies, Inc. Method of purging lean NOx trap
DE19850338C2 (de) 1998-11-02 2001-11-22 Heraeus Electro Nite Int Verfahren und Einrichtung zur Kontrolle und Beobachtung der Alterung eines Katalysators im Abgas von Verbrennungskraftmaschinen und des Schadstoffausstoßes
DE19913901C2 (de) * 1999-03-26 2001-10-18 Siemens Ag Verfahren zum Überprüfen der Funktionsfähigkeit eines Katalysators
DE10017931A1 (de) 2000-04-11 2001-12-06 Siemens Ag Verfahren zur Diagnose einer Abgasreinigungsanlage einer lambdageregelten Brennkraftmaschine
GB2399178B (en) * 2003-03-06 2006-06-07 Ford Global Tech Llc Method of accurately estimating air to fuel ratio
DE102005004670B4 (de) * 2005-02-02 2007-05-24 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Verfahren zur Diagnose des Alterungsgrades eines im Abgaskanal einer Brennkraftmaschine angeordneten Katalysators
DE102005059894B4 (de) 2005-12-15 2019-07-25 Robert Bosch Gmbh Verfahren zur Messung der Sauerstoffspeicherfähigkeit einer Abgasreinigungsanlage
JP4915220B2 (ja) 2006-11-24 2012-04-11 富士通株式会社 携帯端末装置
JP4221025B2 (ja) * 2006-12-25 2009-02-12 三菱電機株式会社 内燃機関の空燃比制御装置
JP4221026B2 (ja) * 2006-12-25 2009-02-12 三菱電機株式会社 内燃機関の空燃比制御装置
DE102009010021A1 (de) 2009-02-21 2010-09-02 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Simulationsmodell zur On-Bord-Diagnose des Alterungsgrades eines im Abgaskanal einer Brennkraftmaschine angeordneten Katalysators
DE102010031654B4 (de) 2010-07-22 2023-10-05 Robert Bosch Gmbh Verfahren zum Betreiben einer Brennkraftmaschine
JP5951068B1 (ja) * 2015-04-14 2016-07-13 三菱電機株式会社 内燃機関の空燃比制御装置および空燃比制御方法
DE102021102456B3 (de) 2021-02-03 2022-05-19 Audi Aktiengesellschaft Verfahren zum Betreiben einer Antriebseinrichtung sowie entsprechende Antriebseinrichtung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4007589A (en) * 1973-01-31 1977-02-15 Robert Bosch G.M.B.H. Internal combustion exhaust catalytic reactor monitoring system
CH668620A5 (de) * 1984-04-12 1989-01-13 Daimler Benz Ag Verfahren zur ueberpruefung und justierung von katalytischen abgasreinigungsanlagen von verbrennungsmotoren.
GB9003235D0 (en) * 1990-02-13 1990-04-11 Lucas Ind Plc Exhaust gas catalyst monitoring
JP2666530B2 (ja) * 1990-07-16 1997-10-22 トヨタ自動車株式会社 内燃機関の空燃比制御装置

Also Published As

Publication number Publication date
ITMI930608A1 (it) 1994-09-30
ES2068751B1 (es) 1995-11-16
JPH0626330A (ja) 1994-02-01
ITMI930608A0 (it) 1993-03-30
DE4211116A1 (de) 1993-10-07
ES2068751A1 (es) 1995-04-16

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19960926