FR2898682B1 - METHOD AND DEVICE FOR CORRECTING THE SIGNAL PROVIDED BY A LAMBDA PROBE - Google Patents

METHOD AND DEVICE FOR CORRECTING THE SIGNAL PROVIDED BY A LAMBDA PROBE

Info

Publication number
FR2898682B1
FR2898682B1 FR0753812A FR0753812A FR2898682B1 FR 2898682 B1 FR2898682 B1 FR 2898682B1 FR 0753812 A FR0753812 A FR 0753812A FR 0753812 A FR0753812 A FR 0753812A FR 2898682 B1 FR2898682 B1 FR 2898682B1
Authority
FR
France
Prior art keywords
exhaust gas
detecting
measuring signal
lambdas
combustion engine
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.)
Expired - Fee Related
Application number
FR0753812A
Other languages
French (fr)
Other versions
FR2898682A1 (en
Inventor
Eberhard Schnaibel
Lothar Raff
Michael Fey
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of FR2898682A1 publication Critical patent/FR2898682A1/en
Application granted granted Critical
Publication of FR2898682B1 publication Critical patent/FR2898682B1/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F02D41/1454—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
    • F02D41/1439—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
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
    • F02D2041/1413—Controller structures or design
    • F02D2041/1432—Controller structures or design the system including a filter, e.g. a low pass or high pass filter
    • 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
    • F02D2041/147—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 hydrogen content or concentration of the exhaust gases

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

The method involves making a correction when measuring signals (USvK, USnK) correspond to a stoichiometric exhaust gas lambda and a detection of the hydrogen concentration takes place on the basis an evaluation of the measuring signal. An occurrence of a hydrogen concentration is detected on the basis of a differentiation of the measuring signal. A differentiated measuring signal is compared with a lower threshold value (USFoLimdt), for detecting the occurrence of a hydrogen concentration, when the differentiated measuring signal exceeds the lower threshold value. Independent claims are also included for the following: (1) a device for detecting the exhaust gas-Lambdas within an exhaust gas region of an internal-combustion engine (2) a computer program for detecting the exhaust gas-Lambdas within an exhaust gas region of an internal-combustion engine (3) a computer program product with a program code for detecting the exhaust gas-Lambdas within an exhaust gas region of an internal-combustion engine.
FR0753812A 2006-03-15 2007-03-14 METHOD AND DEVICE FOR CORRECTING THE SIGNAL PROVIDED BY A LAMBDA PROBE Expired - Fee Related FR2898682B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006011894.4A DE102006011894B4 (en) 2006-03-15 2006-03-15 Method for correcting a signal provided by a lambda sensor

Publications (2)

Publication Number Publication Date
FR2898682A1 FR2898682A1 (en) 2007-09-21
FR2898682B1 true FR2898682B1 (en) 2013-12-20

Family

ID=38374798

Family Applications (1)

Application Number Title Priority Date Filing Date
FR0753812A Expired - Fee Related FR2898682B1 (en) 2006-03-15 2007-03-14 METHOD AND DEVICE FOR CORRECTING THE SIGNAL PROVIDED BY A LAMBDA PROBE

Country Status (2)

Country Link
DE (1) DE102006011894B4 (en)
FR (1) FR2898682B1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5018550B2 (en) 2008-02-27 2012-09-05 トヨタ自動車株式会社 Fuel reformer
US8571785B2 (en) * 2008-04-23 2013-10-29 GM Global Technology Operations LLC Universal tracking air-fuel regulator for internal combustion engines
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
DE102017201742A1 (en) 2017-02-03 2018-08-09 Robert Bosch Gmbh Method for heating and regenerating a particulate filter in the exhaust gas of a gasoline engine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19803828B4 (en) * 1998-01-31 2010-05-12 Robert Bosch Gmbh Method and device for assessing the conversion capability of a catalyst
DE10147491A1 (en) * 2001-09-26 2003-04-24 Bosch Gmbh Robert Air / fuel ratio control method for an internal combustion engine
GB2418264B (en) * 2004-09-16 2009-03-04 Ford Global Tech Llc A method for recognising and using changes in the exhaust gasses emitted from an engine

Also Published As

Publication number Publication date
FR2898682A1 (en) 2007-09-21
DE102006011894B4 (en) 2021-01-21
DE102006011894A1 (en) 2007-09-20

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