EP1048834A3 - Method for correcting the characteristic curve of a linear lambda sensor - Google Patents

Method for correcting the characteristic curve of a linear lambda sensor Download PDF

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Publication number
EP1048834A3
EP1048834A3 EP00107491A EP00107491A EP1048834A3 EP 1048834 A3 EP1048834 A3 EP 1048834A3 EP 00107491 A EP00107491 A EP 00107491A EP 00107491 A EP00107491 A EP 00107491A EP 1048834 A3 EP1048834 A3 EP 1048834A3
Authority
EP
European Patent Office
Prior art keywords
correcting
characteristic curve
lambda sensor
signal
lambda probe
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.)
Withdrawn
Application number
EP00107491A
Other languages
German (de)
French (fr)
Other versions
EP1048834A2 (en
Inventor
Thomas Dr. Heinze
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP1048834A2 publication Critical patent/EP1048834A2/en
Publication of EP1048834A3 publication Critical patent/EP1048834A3/en
Withdrawn legal-status Critical Current

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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
    • F02D41/1439—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
    • 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
    • F02D41/12—Introducing corrections for particular operating conditions for deceleration
    • F02D41/123—Introducing corrections for particular operating conditions for deceleration the fuel injection being cut-off
    • 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
    • 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
    • F02D41/1486—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor with correction for particular operating conditions
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

Zur Korrektur der Kennlinie einer Breitband-Lambda-Sonde (5), die in einer Abgasreinigungsanlage einer Brennkraftmaschine (10) stromauf eines Katalysators (6) angeordnet ist, wird in einer Schubabschaltungsphase ein Signalpegel des Signals der Lambda-Sonde (5) bestimmt und dem der Sauerstoffkonzentration der Umgebungsluft entsprechende Lambda-Wert zugeordnet. Dabei wird die Steigung des Signals der Lambda-Sonde (5) während der Schubabschaltung berücksichtigt.

Figure 00000001
To correct the characteristic of a broadband lambda probe (5), which is arranged in an exhaust gas cleaning system of an internal combustion engine (10) upstream of a catalytic converter (6), a signal level of the signal of the lambda probe (5) is determined in a fuel cut-off phase and the corresponding lambda value assigned to the oxygen concentration of the ambient air. The slope of the signal from the lambda probe (5) is taken into account during the fuel cut-off.
Figure 00000001
EP00107491A 1999-04-28 2000-04-06 Method for correcting the characteristic curve of a linear lambda sensor Withdrawn EP1048834A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1999119427 DE19919427C2 (en) 1999-04-28 1999-04-28 Method for correcting the characteristic of a broadband lambda probe
DE19919427 1999-04-28

Publications (2)

Publication Number Publication Date
EP1048834A2 EP1048834A2 (en) 2000-11-02
EP1048834A3 true EP1048834A3 (en) 2002-08-07

Family

ID=7906223

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00107491A Withdrawn EP1048834A3 (en) 1999-04-28 2000-04-06 Method for correcting the characteristic curve of a linear lambda sensor

Country Status (2)

Country Link
EP (1) EP1048834A3 (en)
DE (1) DE19919427C2 (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10016886A1 (en) * 2000-04-05 2001-10-18 Volkswagen Ag Method and device for regulating an internal combustion engine
JP4428904B2 (en) * 2002-01-24 2010-03-10 トヨタ自動車株式会社 Oxygen concentration detection apparatus and oxygen concentration detection method
FR2874091B1 (en) * 2004-08-06 2006-11-24 Peugeot Citroen Automobiles Sa SYSTEM FOR CORRECTING AN OUTPUT SIGNAL OF AN OXYGEN PROBE
DE102004055231B3 (en) * 2004-11-16 2006-07-20 Siemens Ag Method and device for lambda control in an internal combustion engine
JP4438681B2 (en) * 2005-04-27 2010-03-24 トヨタ自動車株式会社 Air-fuel ratio control device for internal combustion engine
JP4462142B2 (en) * 2005-07-28 2010-05-12 株式会社デンソー Control device for internal combustion engine
DE102005056152A1 (en) 2005-11-23 2007-05-24 Robert Bosch Gmbh Method for calibrating the signal provided by a broadband lambda sensor and apparatus for carrying out the method
DE102006058880A1 (en) 2006-12-13 2008-07-03 Siemens Ag Method for correcting an output signal of a lambda sensor and internal combustion engine
EP1961940B1 (en) * 2007-02-21 2019-04-03 NGK Spark Plug Co., Ltd. Diagnostic method and control apparatus for gas sensor
DE102007015362A1 (en) * 2007-03-30 2008-10-02 Volkswagen Ag Method for lambda control in combustion engine of motor vehicle, involves using measuring signal on two points of range of lambda-values, and correcting measuring signal on one of two points
JP4853548B2 (en) * 2009-05-29 2012-01-11 株式会社デンソー Exhaust sensor diagnostic device
US8499752B2 (en) * 2009-09-28 2013-08-06 Robert Bosch Gmbh Method to adapt the O2 signal of an O2 sensor during overrun
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
DE102011078056A1 (en) * 2011-06-24 2012-12-27 Robert Bosch Gmbh Method for adjusting a characteristic of a sensor element
DE102011085115B4 (en) 2011-10-24 2022-07-07 Robert Bosch Gmbh Method and device for adapting a lambda control
DE102011087213A1 (en) 2011-11-28 2013-05-29 Volkswagen Ag Method and device for controlling an air-fuel ratio of an internal combustion engine
DE102011087312B4 (en) 2011-11-29 2024-06-27 Volkswagen Aktiengesellschaft Method and device for determining a lambda value or an oxygen concentration of a gas mixture
JP6287810B2 (en) * 2014-12-19 2018-03-07 トヨタ自動車株式会社 Air-fuel ratio sensor abnormality diagnosis device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4676213A (en) * 1985-10-02 1987-06-30 Hitachi, Ltd. Engine air-fuel ratio control apparatus
US4753203A (en) * 1985-02-25 1988-06-28 Ngk Spark Plug Co., Ltd. Air/fuel ratio sensor apparatus for use with internal combustion engine
US4909223A (en) * 1987-09-09 1990-03-20 Hitachi, Ltd. Air-fuel ratio control apparatus for multicylinder engine
DE4322361A1 (en) * 1992-07-03 1994-01-05 Nippon Denso Co IC engine exhaust control system with catalyser - monitors exhaust gases on either side of catalyser and controls inlet mixture with processor control
DE19842425A1 (en) * 1998-09-16 2000-03-30 Siemens Ag Method for correcting the characteristic of a linear lambda probe

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19819461B4 (en) * 1998-04-30 2004-07-01 Siemens Ag Process for exhaust gas purification with trim control

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4753203A (en) * 1985-02-25 1988-06-28 Ngk Spark Plug Co., Ltd. Air/fuel ratio sensor apparatus for use with internal combustion engine
US4676213A (en) * 1985-10-02 1987-06-30 Hitachi, Ltd. Engine air-fuel ratio control apparatus
US4909223A (en) * 1987-09-09 1990-03-20 Hitachi, Ltd. Air-fuel ratio control apparatus for multicylinder engine
DE4322361A1 (en) * 1992-07-03 1994-01-05 Nippon Denso Co IC engine exhaust control system with catalyser - monitors exhaust gases on either side of catalyser and controls inlet mixture with processor control
DE19842425A1 (en) * 1998-09-16 2000-03-30 Siemens Ag Method for correcting the characteristic of a linear lambda probe

Also Published As

Publication number Publication date
EP1048834A2 (en) 2000-11-02
DE19919427A1 (en) 2000-11-02
DE19919427C2 (en) 2001-09-20

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