FR2216016A1 - - Google Patents
Info
- Publication number
- FR2216016A1 FR2216016A1 FR7345609A FR7345609A FR2216016A1 FR 2216016 A1 FR2216016 A1 FR 2216016A1 FR 7345609 A FR7345609 A FR 7345609A FR 7345609 A FR7345609 A FR 7345609A FR 2216016 A1 FR2216016 A1 FR 2216016A1
- Authority
- FR
- France
- 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
-
- 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
-
- 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
- F01N11/002—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring or estimating temperature or pressure in, or 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
- 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
- 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
- F02D41/1477—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the regulation circuit or part of it,(e.g. comparator, PI regulator, output)
- F02D41/1479—Using a comparator with variable reference
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
-
- 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
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2700/00—Mechanical control of speed or power of a single cylinder piston engine
- F02D2700/09—Other ways of controlling
-
- 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)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Electrochemistry (AREA)
- Molecular Biology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Exhaust Gas After Treatment (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2304622A DE2304622A1 (de) | 1973-01-31 | 1973-01-31 | Einrichtung zur ueberwachung von katalytischen reaktoren in abgasentgiftungsanlagen von brennkraftmaschinen |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2216016A1 true FR2216016A1 (fr) | 1974-08-30 |
FR2216016B1 FR2216016B1 (fr) | 1978-03-10 |
Family
ID=5870461
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7345609A Expired FR2216016B1 (fr) | 1973-01-31 | 1973-12-19 |
Country Status (7)
Country | Link |
---|---|
US (1) | US3962866A (fr) |
JP (1) | JPS49109721A (fr) |
DE (1) | DE2304622A1 (fr) |
FR (1) | FR2216016B1 (fr) |
GB (1) | GB1466396A (fr) |
IT (1) | IT1006166B (fr) |
NL (1) | NL7401278A (fr) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2382583A1 (fr) * | 1977-03-03 | 1978-09-29 | Bosch Gmbh Robert | Circuit de surveillance de la composition des gaz d'echappement de moteur a combustion interne |
EP0005613A2 (fr) * | 1978-05-15 | 1979-11-28 | Allied Corporation | Circuit sensible à la température pour sonde de détection d'oxygène pendant la période de chauffage |
FR2592190A1 (fr) * | 1985-12-23 | 1987-06-26 | Junkalor Dessau | Installation et procede pour le controle de processus de traitements thermiques, notamment la nitruration, l'oxynitruration en phase gazeuse ou analogue |
WO1994015085A1 (fr) * | 1992-12-21 | 1994-07-07 | Ford Motor Company Limited | Systeme de detecteur d'oxygene a correction du signal |
WO1994019593A1 (fr) * | 1993-02-26 | 1994-09-01 | Roth-Technik Gmbh & Co. Forschung Für Automobil- Une Umwelttechnik | Combinaison de sondes lambda |
Families Citing this family (67)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5070315U (fr) * | 1973-10-30 | 1975-06-21 | ||
DE2448306C2 (de) * | 1974-10-10 | 1983-12-08 | Robert Bosch Gmbh, 7000 Stuttgart | Kraftstoffeinspritzanlage |
DE2449836A1 (de) * | 1974-10-19 | 1976-04-29 | Bosch Gmbh Robert | Einrichtung zur regelung des betriebsverhaltens einer brennkraftmaschine |
GB1492284A (en) * | 1974-11-06 | 1977-11-16 | Nissan Motor | Air fuel mixture control apparatus for internal combustion engines |
US4027477A (en) * | 1976-04-29 | 1977-06-07 | General Motors Corporation | Dual sensor closed loop fuel control system having signal transfer between sensors during warmup |
JPS6020571B2 (ja) * | 1976-06-11 | 1985-05-22 | ロ−ベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | 内燃機関に供給される燃料空気混合気の配合を決める制御方法 |
JPS5319887A (en) * | 1976-08-08 | 1978-02-23 | Nippon Soken | Deterioration detecting apparatus for oxygen concentration detector |
JPS5395431A (en) * | 1977-02-01 | 1978-08-21 | Toyota Motor Corp | Trouble alarm device for air fuel ratio detector |
DE2718907C2 (de) * | 1977-04-28 | 1984-04-12 | Robert Bosch Gmbh, 7000 Stuttgart | Meßfühler zur Bestimmung des Sauerstoffgehalts in Abgasen |
GB1604445A (en) * | 1977-09-30 | 1981-12-09 | Sybron Corp | Device for monitoring a component in a fluid mixture |
DE2758835C2 (de) * | 1977-12-30 | 1985-11-14 | Robert Bosch Gmbh, 7000 Stuttgart | Meßfühleranordnung |
JPS584985B2 (ja) * | 1978-05-10 | 1983-01-28 | 株式会社日立製作所 | ガス検知素子 |
JPS5543433A (en) * | 1978-09-25 | 1980-03-27 | Toshiba Corp | Alkali metal vapor concentration measuring unit |
IT1145264B (it) * | 1979-03-15 | 1986-11-05 | Ricardo Consulting Eng | Apparecchio e procedimento per determinare la concentrazione della miscela aria/combustibile alimentata ad un motore a combustione interna |
DE2946775A1 (de) * | 1979-11-20 | 1981-05-27 | Brown, Boveri & Cie Ag, 6800 Mannheim | Verfahren und vorrichtung fuer die von temperaturschwankungen unbeeinflusste bestimmung des sauerstoffgehaltes in gasen |
DE3339429A1 (de) * | 1983-10-29 | 1985-05-09 | Volkswagenwerk Ag, 3180 Wolfsburg | Einrichtung zur reduzierung von abgas-schadstoffen |
USRE33942E (en) * | 1985-02-22 | 1992-06-02 | Toyota Jidosha Kabushiki Kaisha | Double air-fuel ratio sensor system in internal combustion engine |
DE3619897C2 (de) * | 1986-06-13 | 1993-10-07 | Bayerische Motoren Werke Ag | Schutz-Schaltung für katalytische Abgasnachbehandlungsvorrichtungen |
DE3627437C2 (de) * | 1986-08-13 | 1994-05-26 | Bayerische Motoren Werke Ag | Schutzvorrichtung für einen Abgas-Katalysator einer Brennkraftmaschine mit einer Lambda-Regeleinrichtung |
JPS6383415U (fr) * | 1986-11-20 | 1988-06-01 | ||
DE3830515A1 (de) * | 1988-09-08 | 1990-03-22 | Bayerische Motoren Werke Ag | Verfahren zur ueberpruefung der funktion des abgaskatalysators einer brennkraftmaschine |
JPH03164549A (ja) * | 1989-11-22 | 1991-07-16 | Fuji Heavy Ind Ltd | 2サイクルエンジンのエンジン制御装置 |
US5154055A (en) * | 1990-01-22 | 1992-10-13 | Nippondenso Co., Ltd. | Apparatus for detecting purification factor of catalyst |
GB9003316D0 (en) * | 1990-02-14 | 1990-04-11 | Lucas Ind Plc | Monitoring of operation of catalytic converter |
EP0565142B1 (fr) * | 1990-03-19 | 1996-02-28 | Emitec Gesellschaft für Emissionstechnologie mbH | Catalyseur comprenant au moins un capteur de température |
EP0521050B1 (fr) * | 1990-03-19 | 1999-06-02 | Emitec Gesellschaft für Emissionstechnologie mbH | Procede et dispositif permettant de commander un moteur a combustion interne en fonction de la temperature effective d'un catalyseur intercale en aval |
JPH0718368B2 (ja) * | 1990-04-02 | 1995-03-06 | トヨタ自動車株式会社 | 内燃機関の触媒劣化検出装置 |
DE4022546A1 (de) * | 1990-07-16 | 1992-01-23 | Emitec Emissionstechnologie | Messfuehler fuer ein abgassystem und verfahren zu seinem betrieb |
DE4024210C2 (de) * | 1990-07-31 | 1999-09-02 | Bosch Gmbh Robert | Verfahren zur Lambdaregelung einer Brennkraftmaschine mit Katalysator |
JP2943433B2 (ja) * | 1990-08-24 | 1999-08-30 | 株式会社デンソー | 触媒の浄化率検出装置 |
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 |
DE4033026C2 (de) * | 1990-10-18 | 1997-09-04 | Bayerische Motoren Werke Ag | Verfahren zur Vermeidung thermisch kritischer Zustände einer Abgasnachbehandlungsvorrichtung für eine Brennkraftmaschine |
DE4039429A1 (de) * | 1990-12-11 | 1992-06-17 | Abb Patent Gmbh | Verfahren und vorrichtung zur ueberpruefung eines katalysators |
DE4039762A1 (de) * | 1990-12-13 | 1992-06-17 | Bosch Gmbh Robert | Verfahren und vorrichtung zum ueberpruefen des alterungszustandes eines katalysators |
DE4112477C2 (de) * | 1991-04-17 | 2001-03-08 | Bosch Gmbh Robert | Verfahren und Vorrichtung zum Simulieren des zeitlichen Verhaltens des Lambda-Wertes am Auslaß eines Abgaskatalysators und zur Betimmung des Alterungszustandes des Katalysators |
DE4112478C2 (de) * | 1991-04-17 | 2001-03-08 | Bosch Gmbh Robert | Verfahren und Vorrichtung zum Beurteilen des Alterungszustandes eines Katalysators |
DE4112479C2 (de) * | 1991-04-17 | 2002-06-06 | Bosch Gmbh Robert | Verfahren und Vorrichtung zum Bestimmen des Alterungszustandes eines Katalysators |
DE4113316C2 (de) * | 1991-04-24 | 2003-09-11 | Bosch Gmbh Robert | Anschlußschaltung für eine Lambdasonde und Prüfverfahren für eine solche Schaltung |
US5363091A (en) * | 1991-08-07 | 1994-11-08 | Ford Motor Company | Catalyst monitoring using ego sensors |
US5268086A (en) * | 1991-08-07 | 1993-12-07 | Ford Motor Company | Catalyst monitoring using ego sensors |
DE4128823C2 (de) * | 1991-08-30 | 2000-06-29 | Bosch Gmbh Robert | Verfahren und Vorrichtung zum Bestimmen des Speichervermögens eines Katalysators |
US5408215A (en) * | 1991-09-04 | 1995-04-18 | Ford Motor Company | Catalyst monitoring using a hydrocarbon sensor |
US5177464A (en) * | 1991-09-04 | 1993-01-05 | Ford Motor Company | Catalyst monitoring using a hydrocarbon sensor |
DE4137626A1 (de) * | 1991-11-15 | 1993-05-19 | Bosch Gmbh Robert | Anschlussschaltung fuer eine sauerstoffsonde und pruefverfahren fuer richtigen sondenanschluss |
DE4139560C2 (de) * | 1991-11-30 | 2001-02-22 | Bosch Gmbh Robert | Verfahren und Vorrichtung zum Gewinnen eines Beurteilungswertes für den Alterungszustand eines Katalysators |
JP3180398B2 (ja) * | 1991-12-27 | 2001-06-25 | 株式会社デンソー | 内燃機関の触媒劣化検出装置 |
DE4211092A1 (de) * | 1992-04-03 | 1993-10-07 | Bosch Gmbh Robert | Verfahren und Vorrichtung zum Beurteilen der Funktionsfähigkeit eines Katalysators |
US5319921A (en) * | 1992-08-04 | 1994-06-14 | Ford Motor Company | Catalytic converter efficiency monitoring |
US5265416A (en) * | 1992-08-27 | 1993-11-30 | Ford Motor Company | On-board catalytic converter efficiency monitoring |
US5417058A (en) * | 1992-09-30 | 1995-05-23 | Toyota Jidosha Kabushiki Kaisha | Device for detecting deterioration of a catalytic converter for an engine |
US5289678A (en) * | 1992-11-25 | 1994-03-01 | Ford Motor Company | Apparatus and method of on-board catalytic converter efficiency monitoring |
DE4320881A1 (de) * | 1993-02-26 | 1994-09-01 | Roth Forschung Gmbh & Co Autom | Kombination von Lambda-Sonden |
JP3266699B2 (ja) * | 1993-06-22 | 2002-03-18 | 株式会社日立製作所 | 触媒の評価方法及び触媒効率制御方法ならびにNOx浄化触媒評価装置 |
US5539638A (en) * | 1993-08-05 | 1996-07-23 | Pavilion Technologies, Inc. | Virtual emissions monitor for automobile |
US5386373A (en) * | 1993-08-05 | 1995-01-31 | Pavilion Technologies, Inc. | Virtual continuous emission monitoring system with sensor validation |
JPH08177471A (ja) * | 1994-12-28 | 1996-07-09 | Yamaha Motor Co Ltd | 2サイクルエンジン |
DE19506012C2 (de) * | 1995-02-17 | 1998-12-10 | Siemens Ag | Vorrichtung zur Anpassung von Verfahren zur Katalysatorwirkungsgradüberprüfung an Katalysatoren für Brennkraftmaschinen mit zwei Lambdasonden |
US5970426A (en) * | 1995-09-22 | 1999-10-19 | Rosemount Analytical Inc. | Emission monitoring system |
DE19541903A1 (de) * | 1995-11-10 | 1997-05-15 | Bayerische Motoren Werke Ag | Überwachungssystem für die Abgasreinigung einer Brennkraftmaschine |
DE19757112C2 (de) * | 1997-09-15 | 2001-01-11 | Heraeus Electro Nite Int | Gassensor |
DE19805928C2 (de) * | 1998-02-13 | 2002-12-05 | Daimler Chrysler Ag | Verfahren zur Bestimmung des Füllgrads oder der Güte eines Gase speichernden Katalysators |
DE19850338C2 (de) * | 1998-11-02 | 2001-11-22 | Heraeus Electro Nite Int | Verfahren und Einrichtung zur Kontrolle und Beobachtung der Alterung eines Katalysators im Abgas von Verbrennungskraftmaschinen und des Schadstoffausstoßes |
DE102005002237A1 (de) * | 2005-01-18 | 2006-07-20 | Robert Bosch Gmbh | Verfahren zum Betreiben einer Brennkraftmaschine und Vorrichtung zur Durchführung des Verfahrens |
US7748976B2 (en) * | 2005-03-17 | 2010-07-06 | Southwest Research Institute | Use of recirculated exhaust gas in a burner-based exhaust generation system for reduced fuel consumption and for cooling |
DE102006054164B3 (de) * | 2006-11-16 | 2008-04-24 | Tyco Electronics Raychem Gmbh | Verfahren zum Verarbeiten eines analogen Sensorsignals in einer Gassensoranordnung und Messwertverarbeitungsvorrichtung |
DE102007001417B4 (de) * | 2007-01-09 | 2009-11-12 | Ford Global Technologies, LLC, Dearborn | Vorrichtung zur Abschätzung des Beladungszustandes eines NOx-Speicherkatalysators |
CN204357543U (zh) * | 2014-11-21 | 2015-05-27 | 康明斯排放处理公司 | 氮氧化物信号多路复用系统 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB901711A (en) * | 1957-10-02 | 1962-07-25 | Maschf Augsburg Nuernberg Ag | Improvements in and relating to internal combustion engines |
US3441381A (en) * | 1965-06-22 | 1969-04-29 | Engelhard Ind Inc | Apparatus for purifying exhaust gases of an internal combustion engine |
US3620931A (en) * | 1968-11-12 | 1971-11-16 | Westinghouse Electric Corp | Gas analysis method |
US3768259A (en) * | 1971-07-06 | 1973-10-30 | Universal Oil Prod Co | Control for an engine system |
US3766536A (en) * | 1971-12-15 | 1973-10-16 | Gen Motors Corp | Catalytic converter monitor |
DE2204286A1 (de) * | 1972-01-29 | 1973-08-02 | Bosch Gmbh Robert | Einrichtung zur kontrolle der temperatur des auspuffsystems einer brennkraftmaschine |
US3785151A (en) * | 1972-10-10 | 1974-01-15 | Gen Motors Corp | Exhaust gas recirculation system |
-
1973
- 1973-01-31 DE DE2304622A patent/DE2304622A1/de not_active Withdrawn
- 1973-12-19 FR FR7345609A patent/FR2216016B1/fr not_active Expired
-
1974
- 1974-01-25 IT IT19845/74A patent/IT1006166B/it active
- 1974-01-28 US US05/436,863 patent/US3962866A/en not_active Expired - Lifetime
- 1974-01-30 GB GB431574A patent/GB1466396A/en not_active Expired
- 1974-01-30 NL NL7401278A patent/NL7401278A/xx not_active Application Discontinuation
- 1974-01-30 JP JP49012655A patent/JPS49109721A/ja active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2382583A1 (fr) * | 1977-03-03 | 1978-09-29 | Bosch Gmbh Robert | Circuit de surveillance de la composition des gaz d'echappement de moteur a combustion interne |
EP0005613A2 (fr) * | 1978-05-15 | 1979-11-28 | Allied Corporation | Circuit sensible à la température pour sonde de détection d'oxygène pendant la période de chauffage |
EP0005613A3 (fr) * | 1978-05-15 | 1979-12-12 | Allied Corporation | Circuit sensible à la température pour sonde de détection d'oxygène pendant la période de chauffage |
FR2592190A1 (fr) * | 1985-12-23 | 1987-06-26 | Junkalor Dessau | Installation et procede pour le controle de processus de traitements thermiques, notamment la nitruration, l'oxynitruration en phase gazeuse ou analogue |
WO1994015085A1 (fr) * | 1992-12-21 | 1994-07-07 | Ford Motor Company Limited | Systeme de detecteur d'oxygene a correction du signal |
WO1994019593A1 (fr) * | 1993-02-26 | 1994-09-01 | Roth-Technik Gmbh & Co. Forschung Für Automobil- Une Umwelttechnik | Combinaison de sondes lambda |
US5658445A (en) * | 1993-02-26 | 1997-08-19 | Haefele; Edelbert | Combination of lambda probes |
Also Published As
Publication number | Publication date |
---|---|
GB1466396A (en) | 1977-03-09 |
NL7401278A (fr) | 1974-08-02 |
FR2216016B1 (fr) | 1978-03-10 |
US3962866A (en) | 1976-06-15 |
JPS49109721A (fr) | 1974-10-18 |
IT1006166B (it) | 1976-09-30 |
DE2304622A1 (de) | 1974-08-15 |
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Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |