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
Application number
ITTO920760A
Other languages
English (en)
Inventor
Aldo Perotto
Original Assignee
Fiat Auto Spa
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 Fiat Auto Spa filed Critical Fiat Auto Spa
Priority to ITTO920760A priority Critical patent/IT1257100B/it
Publication of ITTO920760A0 publication Critical patent/ITTO920760A0/it
Priority to EP93113738A priority patent/EP0588123B1/en
Priority to DE69301648T priority patent/DE69301648T2/de
Publication of ITTO920760A1 publication Critical patent/ITTO920760A1/it
Priority to US08/520,038 priority patent/US5627757A/en
Application granted granted Critical
Publication of IT1257100B publication Critical patent/IT1257100B/it

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)
ITTO920760A 1992-09-14 1992-09-14 Sistema di monitoraggio dell'efficienza di un catalizzatore, particolarmente per autoveicoli. IT1257100B (it)

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)

* Cited by examiner, † Cited by third party
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
US8245567B2 (en) * 2008-08-19 2012-08-21 GM Global Technology Operations LLC On board diagnostic monitor of NOx conversion efficiency for aftertreatment device
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
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)

* Cited by examiner, † Cited by third party
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
US5224345A (en) * 1988-11-09 1993-07-06 Robert Bosch Gmbh Method and arrangement for lambda control
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

Also Published As

Publication number Publication date
EP0588123A1 (en) 1994-03-23
US5627757A (en) 1997-05-06
DE69301648T2 (de) 1996-07-11
DE69301648D1 (de) 1996-04-04
ITTO920760A1 (it) 1994-03-14
ITTO920760A0 (it) 1992-09-14
EP0588123B1 (en) 1996-02-28

Similar Documents

Publication Publication Date Title
IT1257100B (it) Sistema di monitoraggio dell'efficienza di un catalizzatore, particolarmente per autoveicoli.
IT1143770B (it) Catalizzatore per la produzione di ammoniaca,preparazione di tale catalizzatore e processo catalitico
JPS5417414A (en) Exhaust gas purifying system
FR2285517A1 (fr) Procede et installation pour controler l'activite de reacteurs catalytiques
FR2347095A1 (fr) Catalyseur et procede d'hydrogenation selective
BE852590A (fr) Procede de purification catalytique de gaz
ATE10742T1 (de) Substituierte n-(4-indolyl-piperidino-alkyl)benzimidazolone,verfahren zu ihrer herstellung und ihre verwendung als pharmazeutika.
FR2338323A1 (fr) Procede de conversion d'hydrocarbures avec des particules de catalyseur s'ecoulant par gravite
IT1115755B (it) Strumento per rilevare la formazione di trombi,in particolare rilevare la presenza di fibrinogneo
FR2346043A1 (fr) Appareillage permettant la regeneration du charbon actif use
BE857326A (fr) Procede de denitration de gaz d'echappement
BR8407252A (pt) Processo catalitico para a producao de alcoois a partir de monoxido de carbono,hidrogenio e olefinas
IT7919541A0 (it) Soluzioni acquose di acidi inorganici, gelificate e metodi per il loro impiego.
BE857710A (fr) Procede d'oxydation catalytique d'hydrocarbures halogenes en c2-c4'
GB1507164A (en) Apparatus for purifying gases
IT7830965A0 (it) Metodo per la produzione di ammoniaca per reazione catalitica tra idrogeno e azoto.
PL202449A1 (pl) Katalizator do redukcji monotlenku wegla
BE858011A (fr) Nouveau catalyseur et procede de reforming catalytique des hydrocarbures au moyen de ce catalyseur
ATE331123T1 (de) Unterstützungssystem zum regenerieren einer nox falle
FR2337707A1 (fr) Procede d'oxydation catalytique d'hydrocarbures halogenes en c2-c4
JPS5421146A (en) Failure detector
FR2349641A1 (fr) Catalyseur et procede de conversion d'hydrocarbures
JPS53114496A (en) Gas detecting element
FR2307579A1 (fr) Procede de fluoration in situ d'un catalyseur et application a la transformation catalytique d'hydrocarbures
SU793631A1 (ru) Способ очистки газов от органическихпРиМЕСЕй

Legal Events

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

Effective date: 19950929