ITMI930608A1 - PROCEDURE AND DEVICE TO RECOGNIZE THE STATE OF A CATALYST - Google Patents

PROCEDURE AND DEVICE TO RECOGNIZE THE STATE OF A CATALYST

Info

Publication number
ITMI930608A1
ITMI930608A1 IT000608A ITMI930608A ITMI930608A1 IT MI930608 A1 ITMI930608 A1 IT MI930608A1 IT 000608 A IT000608 A IT 000608A IT MI930608 A ITMI930608 A IT MI930608A IT MI930608 A1 ITMI930608 A1 IT MI930608A1
Authority
IT
Italy
Prior art keywords
recognize
catalyst
procedure
state
Prior art date
Application number
IT000608A
Other languages
Italian (it)
Inventor
Frank Blischke
Eberhard Schnaibel
Erich Schneider
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/en
Publication of ITMI930608A1 publication Critical patent/ITMI930608A1/en
Application granted granted Critical
Publication of IT1263842B publication Critical patent/IT1263842B/en

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
    • 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)
ITMI930608A 1992-04-03 1993-03-30 PROCEDURE AND DEVICE TO RECOGNIZE THE STATE OF A CATALYST IT1263842B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4211116A DE4211116A1 (en) 1992-04-03 1992-04-03 On-board detection of state of IC engine exhaust catalyser - increasing lean-rich cycle until exhaust gas probe signal indicates noticeable change to determine oxygen@ storage capacity

Publications (3)

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

Family

ID=6455919

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI930608A IT1263842B (en) 1992-04-03 1993-03-30 PROCEDURE AND DEVICE TO RECOGNIZE THE STATE OF A CATALYST

Country Status (4)

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

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2998575B2 (en) * 1994-10-20 2000-01-11 日産自動車株式会社 Catalyst deterioration diagnosis device for internal combustion engine
DE4441432A1 (en) * 1994-11-22 1996-05-23 Roth Technik Gmbh Arrangement for monitoring the functionality of catalysts and / or lambda probes
US5845489A (en) * 1995-11-08 1998-12-08 Denso Corporation Abnormality detector for air-fuel ratio control system
DE19630940C2 (en) * 1996-07-31 1999-03-04 Siemens Ag Procedure for checking the catalyst efficiency
DE19801815A1 (en) * 1998-01-19 1999-07-22 Volkswagen Ag Lean-burn i.c. engine exhaust gas cleaning process
DE19816175A1 (en) * 1998-04-14 1999-10-21 Degussa Procedure for checking the functionality of a nitrogen oxide storage catalytic converter
US6244047B1 (en) * 1998-10-02 2001-06-12 Ford Global Technologies, Inc. Method of purging lean NOx trap
DE19850338C2 (en) * 1998-11-02 2001-11-22 Heraeus Electro Nite Int Method and device for checking and monitoring the aging of a catalytic converter in the exhaust gas of internal combustion engines and the emission of pollutants
DE19913901C2 (en) * 1999-03-26 2001-10-18 Siemens Ag Procedure for checking the functionality of a catalytic converter
DE10017931A1 (en) 2000-04-11 2001-12-06 Siemens Ag Method for diagnosing an exhaust gas purification system of a lambda-controlled internal combustion engine
GB2399178B (en) * 2003-03-06 2006-06-07 Ford Global Tech Llc Method of accurately estimating air to fuel ratio
DE102005004670B4 (en) 2005-02-02 2007-05-24 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Method for diagnosing the degree of aging of a catalyst arranged in the exhaust duct of an internal combustion engine
DE102005059894B4 (en) 2005-12-15 2019-07-25 Robert Bosch Gmbh Method for measuring the oxygen storage capacity of an emission control system
JP4915220B2 (en) 2006-11-24 2012-04-11 富士通株式会社 Mobile terminal device
JP4221026B2 (en) * 2006-12-25 2009-02-12 三菱電機株式会社 Air-fuel ratio control device for internal combustion engine
JP4221025B2 (en) 2006-12-25 2009-02-12 三菱電機株式会社 Air-fuel ratio control device for internal combustion engine
DE102009010021A1 (en) 2009-02-21 2010-09-02 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Simulation model for on-board diagnostics of degree of deterioration of catalyst arranged in exhaust pipe of internal combustion engine, has multiple characteristics for respective catalytic type
DE102010031654B4 (en) 2010-07-22 2023-10-05 Robert Bosch Gmbh Method for operating an internal combustion engine
JP5951068B1 (en) * 2015-04-14 2016-07-13 三菱電機株式会社 Air-fuel ratio control apparatus and air-fuel ratio control method for internal combustion engine
DE102021102456B3 (en) 2021-02-03 2022-05-19 Audi Aktiengesellschaft Method for operating a drive device and corresponding drive device

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 (en) * 1984-04-12 1989-01-13 Daimler Benz Ag METHOD FOR CHECKING AND ADJUSTING CATALYTIC EXHAUST GAS PURIFICATION PLANTS OF COMBUSTION ENGINES.
GB9003235D0 (en) * 1990-02-13 1990-04-11 Lucas Ind Plc Exhaust gas catalyst monitoring
JP2666530B2 (en) * 1990-07-16 1997-10-22 トヨタ自動車株式会社 Air-fuel ratio control device for internal combustion engine

Also Published As

Publication number Publication date
ITMI930608A0 (en) 1993-03-30
ES2068751A1 (en) 1995-04-16
ES2068751B1 (en) 1995-11-16
IT1263842B (en) 1996-09-04
JPH0626330A (en) 1994-02-01
DE4211116A1 (en) 1993-10-07

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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