IT1257100B - Sistema di monitoraggio dell'efficienza di un catalizzatore, particolarmente per autoveicoli. - Google Patents
Sistema di monitoraggio dell'efficienza di un catalizzatore, particolarmente per autoveicoli.Info
- Publication number
- IT1257100B IT1257100B ITTO920760A ITTO920760A IT1257100B IT 1257100 B IT1257100 B IT 1257100B IT TO920760 A ITTO920760 A IT TO920760A IT TO920760 A ITTO920760 A IT TO920760A IT 1257100 B IT1257100 B IT 1257100B
- Authority
- IT
- Italy
- Prior art keywords
- catalyst
- efficiency
- vehicles
- monitoring system
- output signals
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1439—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the position of the sensor
- F02D41/1441—Plural sensors
-
- 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
- F01N2550/00—Monitoring or diagnosing the deterioration of exhaust systems
- F01N2550/20—Monitoring artificially aged exhaust systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B1/00—Engines characterised by fuel-air mixture compression
- F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
- F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
- F02D41/1454—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio
- F02D41/1456—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio with sensor output signal being linear or quasi-linear with the concentration of oxygen
-
- 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)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Exhaust Gas After Treatment (AREA)
- Catalysts (AREA)
Abstract
L'efficienza del catalizzatore (C) viene valutata a partire dai segnali di uscita di due sonde lambda (2, 3) disposte rispettivamente a monte (2) ed a valle (3) del catalizzatore (C) stesso. In particolare, quale segnale indicativo dell'efficienza, viene utilizzato un segnale ottenuto calcolando gli scarti quadratici medi (SQM2, SQM3) dei segnali di uscita di tali sonde (2, 3).(Figura 1)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITTO920760A IT1257100B (it) | 1992-09-14 | 1992-09-14 | Sistema di monitoraggio dell'efficienza di un catalizzatore, particolarmente per autoveicoli. |
EP93113738A EP0588123B1 (en) | 1992-09-14 | 1993-08-27 | System for monitoring the efficiency of a catalyst, in particular for motor vehicles |
DE69301648T DE69301648T2 (de) | 1992-09-14 | 1993-08-27 | System zur Überwachung der Leistungsfähigkeit eines Katalysators, insbesondere für Kraftfahrzeuge |
US08/520,038 US5627757A (en) | 1992-09-14 | 1995-08-28 | System for monitoring the efficiency of a catalyst, in particular for motor vehicles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITTO920760A IT1257100B (it) | 1992-09-14 | 1992-09-14 | Sistema di monitoraggio dell'efficienza di un catalizzatore, particolarmente per autoveicoli. |
Publications (3)
Publication Number | Publication Date |
---|---|
ITTO920760A0 ITTO920760A0 (it) | 1992-09-14 |
ITTO920760A1 ITTO920760A1 (it) | 1994-03-14 |
IT1257100B true IT1257100B (it) | 1996-01-05 |
Family
ID=11410722
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ITTO920760A IT1257100B (it) | 1992-09-14 | 1992-09-14 | Sistema di monitoraggio dell'efficienza di un catalizzatore, particolarmente per autoveicoli. |
Country Status (4)
Country | Link |
---|---|
US (1) | US5627757A (it) |
EP (1) | EP0588123B1 (it) |
DE (1) | DE69301648T2 (it) |
IT (1) | IT1257100B (it) |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2715910B1 (fr) * | 1994-02-04 | 1996-04-19 | Sapal Plieuses Automatiques | Procédé de conditionnement de produits, notamment de produits alimentaires, et dispositif pour la mise en Óoeuvre de ce procédé. |
IT1267637B1 (it) * | 1994-11-30 | 1997-02-07 | Fiat Ricerche | Sistema di monitoraggio dell'efficienza di un catalizzatore, particolarmente per autoveicoli. |
DE19545169A1 (de) * | 1995-12-04 | 1997-06-05 | Bayerische Motoren Werke Ag | Verfahren zur Funktionsüberwachung eines HC-Adsorbers |
US5887421A (en) * | 1996-03-18 | 1999-03-30 | Toyota Jidosha Kabushiki Kaisha | Apparatus for detecting the deterioration of a three-way catalytic converter for an internal combustion engine |
US5732551A (en) * | 1996-12-11 | 1998-03-31 | Motorola Inc. | Method for monitoring the performance of a catalytic converter using mass transfer coefficients |
US5953905A (en) * | 1997-01-17 | 1999-09-21 | Ford Global Technologies, Inc. | System and method for monitoring a catalytic converter |
US5842339A (en) * | 1997-02-26 | 1998-12-01 | Motorola Inc. | Method for monitoring the performance of a catalytic converter |
US5941928A (en) * | 1997-07-31 | 1999-08-24 | Motorola Inc. | System and method for measuring hydrocarbon conversion efficiency of a catalytic converter |
US5916294A (en) * | 1997-07-31 | 1999-06-29 | Motorola Inc. | System and method for estimating tailpipe a emissions in a vehicle |
JP3688533B2 (ja) * | 1999-11-12 | 2005-08-31 | 本田技研工業株式会社 | 排ガス浄化用触媒装置の劣化状態評価方法 |
US6378359B1 (en) * | 2000-01-07 | 2002-04-30 | Ford Global Technologies, Inc. | Method and system for evaluating exhaust on-board diagnostics system |
DE10155647B4 (de) * | 2001-11-28 | 2012-07-05 | Volkswagen Ag | Verfahren zur On-Bord-Diagnose (OBD) emissionsrelevanter Baugruppen von Kraftfahrzeugen |
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 |
US7452611B2 (en) * | 2001-12-27 | 2008-11-18 | Transitions Optical, Inc. | Photochromic optical article |
US6581371B1 (en) * | 2002-02-20 | 2003-06-24 | Ford Global Technologies, Inc. | Engine catalyst monitor |
US6840036B2 (en) * | 2002-08-30 | 2005-01-11 | Ford Global Technologies, Llc | Control of oxygen storage in a catalytic converter |
US7007458B2 (en) * | 2003-02-27 | 2006-03-07 | Ford Global Technologies, Llc | Vehicle having an emission control device diagnostic computer |
JP4118784B2 (ja) * | 2003-10-30 | 2008-07-16 | 本田技研工業株式会社 | 排気ガス浄化装置の劣化診断装置 |
US7254469B2 (en) * | 2004-11-18 | 2007-08-07 | Snap-On Incorporated | Superimposing current or previous graphing data for anomaly detection |
US8065871B1 (en) * | 2007-01-02 | 2011-11-29 | Cummins Ip, Inc | Apparatus, system, and method for real-time diagnosis of a NOx-adsorption catalyst |
US8201444B2 (en) * | 2008-08-19 | 2012-06-19 | GM Global Technology Operations LLC | Aftertreatment device NOx conversion efficiency diagnostics using on board adaptive diagnostic algorithm |
US8245567B2 (en) * | 2008-08-19 | 2012-08-21 | GM Global Technology Operations LLC | On board diagnostic monitor of NOx conversion efficiency for aftertreatment device |
US8756922B2 (en) | 2011-06-10 | 2014-06-24 | Cummins Ip, Inc. | NOx adsorber catalyst condition evaluation apparatus and associated methods |
RU2511833C2 (ru) * | 2012-08-01 | 2014-04-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Алтайский государственный технический университет им. И.И. Ползунова" (АлтГТУ) | Установка для испытаний кассетного нейтрализатора отработавших газов двигателя внутреннего сгорания |
FR3052369B1 (fr) * | 2016-06-10 | 2021-03-19 | Renault Sas | Procede de generation d'un catalyseur defaillant d'un point de vue d'un systeme obd |
Family Cites Families (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3939654A (en) * | 1975-02-11 | 1976-02-24 | General Motors Corporation | Engine with dual sensor closed loop fuel control |
CH668620A5 (de) * | 1984-04-12 | 1989-01-13 | Daimler Benz Ag | Verfahren zur ueberpruefung und justierung von katalytischen abgasreinigungsanlagen von verbrennungsmotoren. |
USRE33942E (en) * | 1985-02-22 | 1992-06-02 | Toyota Jidosha Kabushiki Kaisha | Double air-fuel ratio sensor system in internal combustion engine |
DE3736259C2 (de) * | 1986-11-07 | 1998-01-29 | Volkswagen Ag | Einrichtung zur Ermittlung des Konvertierungsgrads eines Katalysators |
DE3830515A1 (de) * | 1988-09-08 | 1990-03-22 | Bayerische Motoren Werke Ag | Verfahren zur ueberpruefung der funktion des abgaskatalysators einer brennkraftmaschine |
EP0442873B1 (de) * | 1988-11-09 | 1993-08-18 | Robert Bosch Gmbh | Verfahren und vorrichtung zur lambdaregelung |
JPH0331546A (ja) * | 1989-06-27 | 1991-02-12 | Mitsubishi Motors Corp | 内燃機関の空燃比制御装置 |
JPH03249320A (ja) * | 1990-02-28 | 1991-11-07 | Nippondenso Co Ltd | 触媒の劣化検出装置 |
JPH0417747A (ja) * | 1990-05-07 | 1992-01-22 | Japan Electron Control Syst Co Ltd | 内燃機関の空燃比制御装置 |
US5077970A (en) * | 1990-06-11 | 1992-01-07 | Ford Motor Company | Method of on-board detection of automotive catalyst degradation |
JP2676987B2 (ja) * | 1990-07-02 | 1997-11-17 | トヨタ自動車株式会社 | 内燃機関の空燃比制御装置 |
US5228335A (en) * | 1991-02-25 | 1993-07-20 | The United States Of America As Represented By The United States Environmental Protection Agency | Method and apparatus for detection of catalyst failure on-board a motor vehicle using a dual oxygen sensor and an algorithm |
JP3186076B2 (ja) * | 1991-03-20 | 2001-07-11 | 株式会社日立製作所 | 内燃機関の排気浄化用触媒転換効率推定法 |
JP2881265B2 (ja) * | 1991-03-28 | 1999-04-12 | マツダ株式会社 | エンジンの排気浄化装置 |
DE4112478C2 (de) * | 1991-04-17 | 2001-03-08 | Bosch Gmbh Robert | Verfahren und Vorrichtung zum Beurteilen des Alterungszustandes eines Katalysators |
US5099647A (en) * | 1991-06-28 | 1992-03-31 | Ford Motor Company | Combined engine air/fuel control and catalyst monitoring |
US5313791A (en) * | 1991-06-28 | 1994-05-24 | Ford Motor Company | Method for detecting catalyst malfunctions |
US5115639A (en) * | 1991-06-28 | 1992-05-26 | Ford Motor Company | Dual EGO sensor closed loop fuel control |
DE4125154C2 (de) * | 1991-07-30 | 2001-02-22 | Bosch Gmbh Robert | Verfahren und Einrichtung zur Lambdasonden-Überwachung bei einer Brennkraftmaschine |
US5268086A (en) * | 1991-08-07 | 1993-12-07 | Ford Motor Company | Catalyst monitoring using ego sensors |
US5177464A (en) * | 1991-09-04 | 1993-01-05 | Ford Motor Company | Catalyst monitoring using a hydrocarbon sensor |
FR2682993B1 (fr) * | 1991-10-28 | 1994-01-28 | Siemens Automotive Sa | Procede de surveillance de l'efficacite d'un pot catalytique de traitement des gaz d'echappement d'un moteur a combustion interne. |
DE4139560C2 (de) * | 1991-11-30 | 2001-02-22 | Bosch Gmbh Robert | Verfahren und Vorrichtung zum Gewinnen eines Beurteilungswertes für den Alterungszustand eines Katalysators |
US5337555A (en) * | 1991-12-13 | 1994-08-16 | Mazda Motor Corporation | Failure detection system for air-fuel ratio control system |
US5319921A (en) * | 1992-08-04 | 1994-06-14 | Ford Motor Company | Catalytic converter efficiency monitoring |
US5282360A (en) * | 1992-10-30 | 1994-02-01 | Ford Motor Company | Post-catalyst feedback control |
-
1992
- 1992-09-14 IT ITTO920760A patent/IT1257100B/it active IP Right Grant
-
1993
- 1993-08-27 DE DE69301648T patent/DE69301648T2/de not_active Expired - Fee Related
- 1993-08-27 EP EP93113738A patent/EP0588123B1/en not_active Expired - Lifetime
-
1995
- 1995-08-28 US US08/520,038 patent/US5627757A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0588123A1 (en) | 1994-03-23 |
EP0588123B1 (en) | 1996-02-28 |
ITTO920760A0 (it) | 1992-09-14 |
DE69301648D1 (de) | 1996-04-04 |
US5627757A (en) | 1997-05-06 |
DE69301648T2 (de) | 1996-07-11 |
ITTO920760A1 (it) | 1994-03-14 |
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Legal Events
Date | Code | Title | Description |
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0001 | Granted | ||
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19950929 |