FR3062167B1 - METHOD AND DEVICE FOR CALIBRATING AN OXYGEN SENSOR. - Google Patents

METHOD AND DEVICE FOR CALIBRATING AN OXYGEN SENSOR. Download PDF

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Publication number
FR3062167B1
FR3062167B1 FR1750632A FR1750632A FR3062167B1 FR 3062167 B1 FR3062167 B1 FR 3062167B1 FR 1750632 A FR1750632 A FR 1750632A FR 1750632 A FR1750632 A FR 1750632A FR 3062167 B1 FR3062167 B1 FR 3062167B1
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France
Prior art keywords
coefficient
proportionality
oxygen sensor
proportionality coefficient
stored
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.)
Active
Application number
FR1750632A
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French (fr)
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FR3062167A1 (en
Inventor
Patrice Picard
Alain Gerault
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Renault SAS
Original Assignee
Renault SAS
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Publication date
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Priority to FR1750632A priority Critical patent/FR3062167B1/en
Publication of FR3062167A1 publication Critical patent/FR3062167A1/en
Application granted granted Critical
Publication of FR3062167B1 publication Critical patent/FR3062167B1/en
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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
    • F02D41/1454—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
    • 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
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
    • F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
    • 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
    • F02D41/1494—Control of sensor heater
    • 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
    • F02D41/2425—Particular ways of programming the data
    • F02D41/2429—Methods of calibrating or learning
    • F02D41/2441—Methods of calibrating or learning characterised by the learning conditions

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Measuring Oxygen Concentration In Cells (AREA)

Abstract

L'invention concerne une méthode et un dispositif d'étalonnage d'un capteur d'oxygène (16) installé sur un moteur à combustion interne (10), ledit capteur d'oxygène (16) étant destiné à fournir un signal, facteur de la concentration en oxygène des gaz d'échappement et d'un coefficient de proportionnalité stocké, ladite méthode comprenant les étapes suivantes : a) on enregistre une valeur de signal fournie par ledit capteur d'oxygène (16) lorsque qu'il baigne dans un environnement d'une concentration en oxygène connue, pour pouvoir évaluer un coefficient de proportionnalité ; b) on compare le coefficient de proportionnalité évalué et ledit coefficient de proportionnalité stocké ; et, c) on substitue ledit coefficient de proportionnalité évalué audit coefficient de proportionnalité stocké si le coefficient de proportionnalité évalué est différent dudit coefficient de proportionnalité stocké. A l'étape a) on enregistre ladite valeur de signal représentative de la concentration en oxygène connue avant le démarrage dudit moteur à combustion interne (16).The invention relates to a method and a device for calibrating an oxygen sensor (16) installed on an internal combustion engine (10), said oxygen sensor (16) being intended to supply a signal, factor of the oxygen concentration of the exhaust gases and a stored proportionality coefficient, said method comprising the following steps: a) a signal value supplied by said oxygen sensor (16) is recorded when it is immersed in a environment of a known oxygen concentration, in order to be able to evaluate a proportionality coefficient; b) the coefficient of proportionality evaluated and said coefficient of proportionality stored is compared; and, c) substituting said evaluated proportionality coefficient with said stored proportionality coefficient if the evaluated proportionality coefficient is different from said stored proportionality coefficient. In step a), said signal value representative of the oxygen concentration known before the start of said internal combustion engine (16) is recorded.

FR1750632A 2017-01-26 2017-01-26 METHOD AND DEVICE FOR CALIBRATING AN OXYGEN SENSOR. Active FR3062167B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1750632A FR3062167B1 (en) 2017-01-26 2017-01-26 METHOD AND DEVICE FOR CALIBRATING AN OXYGEN SENSOR.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1750632 2017-01-26
FR1750632A FR3062167B1 (en) 2017-01-26 2017-01-26 METHOD AND DEVICE FOR CALIBRATING AN OXYGEN SENSOR.

Publications (2)

Publication Number Publication Date
FR3062167A1 FR3062167A1 (en) 2018-07-27
FR3062167B1 true FR3062167B1 (en) 2020-06-12

Family

ID=58347679

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1750632A Active FR3062167B1 (en) 2017-01-26 2017-01-26 METHOD AND DEVICE FOR CALIBRATING AN OXYGEN SENSOR.

Country Status (1)

Country Link
FR (1) FR3062167B1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19842425C2 (en) * 1998-09-16 2003-10-02 Siemens Ag Method for correcting the characteristic of a linear lambda probe
JP2004150379A (en) * 2002-10-31 2004-05-27 Yanmar Co Ltd Air-fuel ratio control system
DE102009054751B4 (en) * 2009-12-16 2022-03-03 Robert Bosch Gmbh Procedure for detecting the readiness for operation of a lambda probe for functions in selected operating phases
DE102010027984A1 (en) * 2010-04-20 2011-10-20 Robert Bosch Gmbh Method for operating exhaust system of internal combustion engine in motor vehicle, involves guiding fresh air by exhaust system, where fresh air is guided through exhaust duct during operating state of internal combustion engine
DE102010063095A1 (en) * 2010-12-15 2012-06-21 Robert Bosch Gmbh Method and apparatus for performing a zero point adaptation of a lambda probe of an internal combustion engine
DE102014210442A1 (en) * 2014-06-03 2015-12-17 Robert Bosch Gmbh Method for correcting a voltage-lambda characteristic

Also Published As

Publication number Publication date
FR3062167A1 (en) 2018-07-27

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