ES2068751A1 - Method and device for discriminating state of catalyst - Google Patents
Method and device for discriminating state of catalystInfo
- Publication number
- ES2068751A1 ES2068751A1 ES09300678A ES9300678A ES2068751A1 ES 2068751 A1 ES2068751 A1 ES 2068751A1 ES 09300678 A ES09300678 A ES 09300678A ES 9300678 A ES9300678 A ES 9300678A ES 2068751 A1 ES2068751 A1 ES 2068751A1
- Authority
- ES
- Spain
- Prior art keywords
- catalyst
- detector
- composite section
- exhaust
- comparing
- 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.)
- Granted
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)
Abstract
PURPOSE: To accurately discriminate the quality of a catalyst by maintaining hyperoxia and oxygen deficiency to the catalyst at an average value until a composition of a gas mixture varies and increasing the same so as to estimate oxygen-storing ability of the catalyst. CONSTITUTION: In an internal combustion engine 3, fuel-metering means 1 is attached to a suction pipe 2, and exhaust sensors 4, 5 are arranged respectively before and behind a catalyst 6 in an exhaust pipe 7. Further, in addition to means 9 for comparing values detected by the exhaust sensors 4, 5 with a target value generated by means 10, a closed loop controller 11, multiplication means 12 and control means 13 are provided. In this case, a composite section 8 is provided. Furthermore, in the composite section 8, means 19 for comparing a threshold value of a detector 17 with a frequency of a detector 18, and means 20 for outputting a defect signal when the threshold is exceeded are disposed. Thus, defects of the catalyst 6 are discriminated.
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 (2)
Publication Number | Publication Date |
---|---|
ES2068751A1 true ES2068751A1 (en) | 1995-04-16 |
ES2068751B1 ES2068751B1 (en) | 1995-11-16 |
Family
ID=6455919
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES09300678A Expired - Lifetime ES2068751B1 (en) | 1992-04-03 | 1993-04-01 | "PROCEDURE AND DEVICE TO RECOGNIZE THE STATUS 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)
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 |
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 |
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 |
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 |
Citations (4)
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 |
US4622809A (en) * | 1984-04-12 | 1986-11-18 | Daimler-Benz Aktiengesellschaft | Method and apparatus for monitoring and adjusting λ-probe-controlled catalytic exhaust gas emission control systems of internal combustion engines |
EP0444783A1 (en) * | 1990-02-13 | 1991-09-04 | Lucas Industries Public Limited Company | Exhaust gas catalyst monitoring |
US5099646A (en) * | 1990-07-16 | 1992-03-31 | Toyota Jidosha Kabushiki Kaisha | Air-fuel ratio feedback control system having a single air-fuel ratio sensor downstream of a three-way catalyst converter |
-
1992
- 1992-04-03 DE DE4211116A patent/DE4211116A1/en not_active Withdrawn
-
1993
- 1993-03-25 JP JP5065831A patent/JPH0626330A/en active Pending
- 1993-03-30 IT ITMI930608A patent/IT1263842B/en active IP Right Grant
- 1993-04-01 ES ES09300678A patent/ES2068751B1/en not_active Expired - Lifetime
Patent Citations (4)
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 |
US4622809A (en) * | 1984-04-12 | 1986-11-18 | Daimler-Benz Aktiengesellschaft | Method and apparatus for monitoring and adjusting λ-probe-controlled catalytic exhaust gas emission control systems of internal combustion engines |
EP0444783A1 (en) * | 1990-02-13 | 1991-09-04 | Lucas Industries Public Limited Company | Exhaust gas catalyst monitoring |
US5099646A (en) * | 1990-07-16 | 1992-03-31 | Toyota Jidosha Kabushiki Kaisha | Air-fuel ratio feedback control system having a single air-fuel ratio sensor downstream of a three-way catalyst converter |
Also Published As
Publication number | Publication date |
---|---|
ITMI930608A1 (en) | 1994-09-30 |
ITMI930608A0 (en) | 1993-03-30 |
IT1263842B (en) | 1996-09-04 |
ES2068751B1 (en) | 1995-11-16 |
JPH0626330A (en) | 1994-02-01 |
DE4211116A1 (en) | 1993-10-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FA2A | Application withdrawn |
Effective date: 19970218 |