WO1996016257A1 - Anordnung zur überwachung der funktionsfähigkeit von katalysatoren und/oder lambda-sonden - Google Patents
Anordnung zur überwachung der funktionsfähigkeit von katalysatoren und/oder lambda-sonden Download PDFInfo
- Publication number
- WO1996016257A1 WO1996016257A1 PCT/EP1995/004584 EP9504584W WO9616257A1 WO 1996016257 A1 WO1996016257 A1 WO 1996016257A1 EP 9504584 W EP9504584 W EP 9504584W WO 9616257 A1 WO9616257 A1 WO 9616257A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- exhaust gas
- arrangement according
- pollutant sensor
- lambda
- defined change
- 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
- F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
- F02D41/1452—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 a COx content or concentration
- F02D41/1453—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 a COx content or concentration the characteristics being a CO content or concentration
-
- 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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
-
- 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
-
- 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
- F02D41/1493—Details
- F02D41/1495—Detection of abnormalities in the air/fuel ratio feedback system
-
- 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
- F02D41/22—Safety or indicating devices for abnormal conditions
- F02D41/222—Safety or indicating devices for abnormal conditions relating to the failure of sensors or parameter detection devices
-
- 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
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2496—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories the memory being part of a closed loop
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
- G01N27/417—Systems using cells, i.e. more than one cell and probes with solid electrolytes
- G01N27/4175—Calibrating or checking the analyser
-
- 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
- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/02—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor
- F01N2560/023—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor for measuring or detecting HC
-
- 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
-
- 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
Definitions
- the invention relates to an arrangement for monitoring the functionality of catalysts and / or lambda probes in detoxification systems for exhaust gas according to the preamble of the main claim.
- a device is also known (DE 42 11 116) with which the lambda value of a mixture is modulated so that the functionality of the catalytic converter is fixed in such a way that an excess of oxygen periodically occurs alternate with a lack of oxygen.
- the functionality or the measure of the convertibility of the catalytic converter is detected.
- the indirect determination of a statement about the function of the catalytic converter is also disadvantageous here.
- the invention is therefore based on the object of a generic arrangement according to the preamble of
- the values lie outside a tolerance range, this can indirectly affect one Failure of either the catalytic converter or the lambda probes can be closed.
- the defined change in the lambda value can advantageously take place by adding secondary air in the flow direction upstream of the catalytic converter, so that its function and / or that of the pollutant sensor itself can also be checked. Otherwise, only the function of the pollutant sensor itself is determined.
- the directional arrow 10 denotes the flowing exhaust gas from an internal combustion engine of a motor vehicle, which flows off through a catalytic converter designated overall by 11. With 12 is in the direction of flow
- a line 13 is provided, through which air or pure oxygen is controlled to a defined extent, for example via a Secondary air pump can be supplied by the device designated overall by 14.
- the output of the pollutant sensor 12 is electrically connected to an evaluation circuit 15. Its output and the output of a memory 16 are connected to the inputs of a circuit, generally designated 17, the output signal of which provides information about the functionality of the catalytic converter 11 or the lambda probes (not shown).
- a sequence control, designated overall by 18, is connected both to the device 14 and to the evaluation circuit 15 and the memory 16.
- the sequence control causes a preferably rapid, defined change in the exhaust gas, namely a defined supply of secondary air, which corresponds to an emaciation of the fuel-air mixture.
- the evaluation circuit 15 for the pollutant sensor 12 and the memory 16 is activated in order to compare the prepared output signal of the pollutant sensor 12 at the output of the evaluation circuit 15 with a previously stored value profile in the comparison circuit 17 which corresponds to the defined change in the lambda value in the exhaust gas. If the values match, or if they lie within a specifiable tolerance range, the functionality of the catalytic converter and the lambda probes can be deduced. If they are outside, an error must be assumed.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP95938457A EP0793770B1 (de) | 1994-11-22 | 1995-11-21 | Anordnung zur überwachung der funktionsfähigkeit von katalysatoren |
DE59508593T DE59508593D1 (de) | 1994-11-22 | 1995-11-21 | Anordnung zur überwachung der funktionsfähigkeit von katalysatoren |
KR1019960706559A KR970703479A (ko) | 1994-11-22 | 1995-11-21 | 촉매작용을 하는 컨버터 및/또는 람다 센서의 작용 능력을 모니터링하기 위한 시스템 |
JP8516575A JPH11511825A (ja) | 1994-11-22 | 1995-11-21 | 触媒コンバータおよび/またはラムダセンサの作用能力をモニタするシステム |
US08/836,702 US6000218A (en) | 1994-11-22 | 1995-11-21 | System for monitoring the functioning ability of catalytic converters and/or lambda sensors |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4441432A DE4441432A1 (de) | 1994-11-22 | 1994-11-22 | Anordnung zur Überwachung der Funktionsfähigkeit von Katalysatoren und/oder Lambda-Sonden |
DEP4441432.3 | 1994-11-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996016257A1 true WO1996016257A1 (de) | 1996-05-30 |
Family
ID=6533788
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1995/004584 WO1996016257A1 (de) | 1994-11-22 | 1995-11-21 | Anordnung zur überwachung der funktionsfähigkeit von katalysatoren und/oder lambda-sonden |
Country Status (7)
Country | Link |
---|---|
US (1) | US6000218A (de) |
EP (2) | EP0992664A1 (de) |
JP (1) | JPH11511825A (de) |
KR (1) | KR970703479A (de) |
CZ (1) | CZ351796A3 (de) |
DE (2) | DE4441432A1 (de) |
WO (1) | WO1996016257A1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19623335C1 (de) * | 1996-06-12 | 1997-08-28 | Bosch Gmbh Robert | Verfahren zur Beurteilung der Funktionsfähigkeit eines im Abgassystem eines Verbrennungsmotors angeordneten Katalysators |
US6151888A (en) * | 1996-06-12 | 2000-11-28 | Robert Bosch Gmbh | Method of diagnosing a catalytic converter |
DE19734670C1 (de) | 1997-08-11 | 1999-05-27 | Daimler Chrysler Ag | Verfahren zur Vertauschprüfung von Lambdasonden |
DE10111586A1 (de) * | 2001-03-10 | 2002-09-12 | Volkswagen Ag | Verfahren zum Betrieb von Brennkraftmaschinen |
DE102005016075B4 (de) * | 2005-04-08 | 2007-04-12 | Audi Ag | Verfahren zur Diagnose einer dem Abgaskatalysator einer Brennkraftmaschine zugeordneten Lambdasonde |
DE102008005093B3 (de) * | 2008-01-18 | 2009-02-26 | Ford Global Technologies, LLC, Dearborn | Verfahren zur Bestimmung des Luftverhältnisses |
DE102008006633A1 (de) | 2008-01-29 | 2009-07-30 | Volkswagen Ag | Sensor zur Konzentrationsbestimmung von im Abgas enthaltenen Bestandteilen und Verfahren zum Betreiben eines Sensors |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2304464C2 (de) | 1973-01-31 | 1983-03-10 | Robert Bosch Gmbh, 7000 Stuttgart | Meßfühler für die Überwachung der Funktionsfähigkeit von Katalysatoren in Abgas |
US5060474A (en) * | 1989-07-26 | 1991-10-29 | Nissan Motor Company, Limited | Exhaust emission control failure detection system for internal combustion engine |
DE4039429A1 (de) | 1990-12-11 | 1992-06-17 | Abb Patent Gmbh | Verfahren und vorrichtung zur ueberpruefung eines katalysators |
EP0530655A2 (de) | 1991-08-31 | 1993-03-10 | LAMTEC Mess- und Regeltechnik für Feuerungen GmbH & Co. KG | Verfahren und Vorrichtung zur Regelung eines Otto-Motors und Prüfung eines ihm nachgeschalteten Katalysators |
DE4211116A1 (de) | 1992-04-03 | 1993-10-07 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Katalysatorzustandserkennung |
US5265417A (en) * | 1993-01-07 | 1993-11-30 | Ford Motor Company | Method and apparatus for determining the hydrocarbon conversion efficiency of a catalytic converter |
EP0609527A1 (de) | 1993-02-02 | 1994-08-10 | Dr.Ing.h.c. F. Porsche Aktiengesellschaft | Verfahren zur Überprüfung der Funktionstüchtigkeit von Abgaskatalysatoren |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1551920A (en) * | 1975-07-28 | 1979-09-05 | Clayton Manufacturing Co | Apparatus for quickly evalutaing engine exhaust gas emissions |
DE2752862A1 (de) * | 1977-11-26 | 1979-05-31 | Porsche Ag | Verfahren zur ueberpruefung der abgasemission einer brennkraftmaschine |
DE3736259C2 (de) * | 1986-11-07 | 1998-01-29 | Volkswagen Ag | Einrichtung zur Ermittlung des Konvertierungsgrads eines Katalysators |
DE3811732A1 (de) * | 1988-04-08 | 1989-10-19 | Deutsche Fernsprecher Gmbh | Schaltungsanorndnung zur funktionspruefung des katalysators von kraftfahrzeugen |
DE8915832U1 (de) * | 1989-07-18 | 1991-09-05 | Gutmann Messtechnik AG, Hergiswil | Vorrichtung zum Messen von Abgaswerten bei Kraftfahrzeugen |
DE4100397C2 (de) * | 1990-02-10 | 1999-08-05 | Volkswagen Ag | Verfahren und Anordnung zur Überwachung des Konvertierungsgrads eines Katalysators |
JPH0460106A (ja) * | 1990-06-29 | 1992-02-26 | Mazda Motor Corp | エンジンの制御装置 |
JP2666528B2 (ja) * | 1990-07-04 | 1997-10-22 | トヨタ自動車株式会社 | 内燃機関の空燃比制御装置 |
JP2705039B2 (ja) * | 1990-08-28 | 1998-01-26 | 本田技研工業株式会社 | 内燃エンジンの三元触媒の劣化検出装置 |
JP3227153B2 (ja) * | 1990-09-05 | 2001-11-12 | 本田技研工業株式会社 | 内燃エンジンのhcセンサの劣化検出装置 |
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 |
JP3375645B2 (ja) * | 1991-05-14 | 2003-02-10 | 株式会社日立製作所 | 内燃機関の制御装置 |
US5291673A (en) * | 1992-12-21 | 1994-03-08 | Ford Motor Company | Oxygen sensor system with signal correction |
DE4333412A1 (de) * | 1993-09-30 | 1995-04-13 | Siemens Ag | Verfahren zur Überprüfung der Funktionsfähigkeit von Lambdasonden |
-
1994
- 1994-11-22 DE DE4441432A patent/DE4441432A1/de not_active Withdrawn
-
1995
- 1995-11-21 WO PCT/EP1995/004584 patent/WO1996016257A1/de not_active Application Discontinuation
- 1995-11-21 DE DE59508593T patent/DE59508593D1/de not_active Expired - Fee Related
- 1995-11-21 EP EP99124104A patent/EP0992664A1/de not_active Withdrawn
- 1995-11-21 EP EP95938457A patent/EP0793770B1/de not_active Expired - Lifetime
- 1995-11-21 US US08/836,702 patent/US6000218A/en not_active Expired - Fee Related
- 1995-11-21 CZ CZ963517A patent/CZ351796A3/cs unknown
- 1995-11-21 JP JP8516575A patent/JPH11511825A/ja active Pending
- 1995-11-21 KR KR1019960706559A patent/KR970703479A/ko not_active Application Discontinuation
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2304464C2 (de) | 1973-01-31 | 1983-03-10 | Robert Bosch Gmbh, 7000 Stuttgart | Meßfühler für die Überwachung der Funktionsfähigkeit von Katalysatoren in Abgas |
US5060474A (en) * | 1989-07-26 | 1991-10-29 | Nissan Motor Company, Limited | Exhaust emission control failure detection system for internal combustion engine |
DE4039429A1 (de) | 1990-12-11 | 1992-06-17 | Abb Patent Gmbh | Verfahren und vorrichtung zur ueberpruefung eines katalysators |
EP0530655A2 (de) | 1991-08-31 | 1993-03-10 | LAMTEC Mess- und Regeltechnik für Feuerungen GmbH & Co. KG | Verfahren und Vorrichtung zur Regelung eines Otto-Motors und Prüfung eines ihm nachgeschalteten Katalysators |
DE4211116A1 (de) | 1992-04-03 | 1993-10-07 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Katalysatorzustandserkennung |
US5265417A (en) * | 1993-01-07 | 1993-11-30 | Ford Motor Company | Method and apparatus for determining the hydrocarbon conversion efficiency of a catalytic converter |
EP0609527A1 (de) | 1993-02-02 | 1994-08-10 | Dr.Ing.h.c. F. Porsche Aktiengesellschaft | Verfahren zur Überprüfung der Funktionstüchtigkeit von Abgaskatalysatoren |
Also Published As
Publication number | Publication date |
---|---|
EP0992664A1 (de) | 2000-04-12 |
CZ351796A3 (en) | 1997-03-12 |
DE59508593D1 (de) | 2000-08-24 |
US6000218A (en) | 1999-12-14 |
EP0793770B1 (de) | 2000-07-19 |
DE4441432A1 (de) | 1996-05-23 |
KR970703479A (ko) | 1997-07-03 |
EP0793770A1 (de) | 1997-09-10 |
JPH11511825A (ja) | 1999-10-12 |
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