ES2068751B1 - "PROCEDURE AND DEVICE TO RECOGNIZE THE STATUS OF A CATALYST" - Google Patents
"PROCEDURE AND DEVICE TO RECOGNIZE THE STATUS OF A CATALYST"Info
- Publication number
- ES2068751B1 ES2068751B1 ES09300678A ES9300678A ES2068751B1 ES 2068751 B1 ES2068751 B1 ES 2068751B1 ES 09300678 A ES09300678 A ES 09300678A ES 9300678 A ES9300678 A ES 9300678A ES 2068751 B1 ES2068751 B1 ES 2068751B1
- Authority
- ES
- Spain
- Prior art keywords
- catalyst
- oxygen
- recognize
- status
- procedure
- 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
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)
- Combined Controls Of Internal Combustion Engines (AREA)
- Testing Of Engines (AREA)
Abstract
PROCEDIMIENTO Y DISPOSITIVO PARA RECONOCER EL ESTADO DE UN CATALIZADOR, EN EL QUE SE MODULA OBJETIVAMENTE EL VALOR LAMBDA DE LA MEZCLA, DE MANERA QUE SE AGRANDAN SUCESIVAMENTE LAS CANTIDADES DE EXCESO DE OXIGENO Y DE ESCASEZ DE OXIGENO QUE SE SUCEDEN PERIODICAMENTE. EL INSTANTE EN EL QUE EL EFECTO COMPENSADOR, VINCULADO CON LA CAPACIDAD DE ACUMULACION DE OXIGENO DEL CATALIZADOR, SOBRE LAS FLUCTUACIONES DE CONCENTRACION DE OXIGENO EN EL GAS DE ESCAPE NO ES YA SUFICIENTE PARA LA COMPENSACION DE DICHAS CANTIDADES AGRANDADAS, SE DETECTA MEDIANTE LA REACCION DE SALTO DE UNA SONDA LAMBDA DISPUESTA DETRAS DEL CATALIZADOR. EL INTERVALO DE TIEMPO ENTRE ESTE INSTANTE Y EL ARRANQUE DEL AUMENTO SE UTILIZA COMO MEDIDA PARA LA CAPACIDAD DE CONVERSION DEL CATALIZADOR.PROCEDURE AND DEVICE TO RECOGNIZE THE STATUS OF A CATALYST, IN WHICH THE LAMBDA VALUE OF THE MIXTURE IS OBJECTLY MODULATED, SO THAT THE QUANTITIES OF EXCESS OXYGEN AND THE OXYGEN PERIOD THAT ARE SUCCESSFUL ARE SUCCESSIVE THE INSTANT IN WHICH THE COMPENSATING EFFECT, LINKED WITH THE OXYGEN ACCUMULATION CAPACITY OF THE CATALYST, ON THE OXYGEN CONCENTRATION FLUCTUATIONS IN THE EXHAUST GAS IS NOT ENOUGH ENOUGH FOR THE COMPENSATION OF SUCH ENLARGED DETAILS. JUMP OF A LAMBDA PROBE DISPOSED BEHIND THE CATALYST. THE TIME INTERVAL BETWEEN THIS INSTANT AND THE STARTING OF THE INCREASE IS USED AS A MEASURE FOR THE CONVERSION CAPACITY OF THE CATALYST.
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 ES2068751A1 (en) | 1995-04-16 |
ES2068751B1 true 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 |
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)
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 |
-
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
Also Published As
Publication number | Publication date |
---|---|
DE4211116A1 (en) | 1993-10-07 |
IT1263842B (en) | 1996-09-04 |
ITMI930608A1 (en) | 1994-09-30 |
JPH0626330A (en) | 1994-02-01 |
ES2068751A1 (en) | 1995-04-16 |
ITMI930608A0 (en) | 1993-03-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FA2A | Application withdrawn |
Effective date: 19970218 |