ATE170596T1 - METHOD AND DEVICE FOR CONTROLLING THE FUEL/AIR RATIO OF AN INTERNAL COMBUSTION ENGINE WITH CONTROLLED IGNITION - Google Patents

METHOD AND DEVICE FOR CONTROLLING THE FUEL/AIR RATIO OF AN INTERNAL COMBUSTION ENGINE WITH CONTROLLED IGNITION

Info

Publication number
ATE170596T1
ATE170596T1 AT95402920T AT95402920T ATE170596T1 AT E170596 T1 ATE170596 T1 AT E170596T1 AT 95402920 T AT95402920 T AT 95402920T AT 95402920 T AT95402920 T AT 95402920T AT E170596 T1 ATE170596 T1 AT E170596T1
Authority
AT
Austria
Prior art keywords
engine
probe
fuel
controlling
combustion engine
Prior art date
Application number
AT95402920T
Other languages
German (de)
Inventor
Gaetan Monnier
Herve Perrin
Richard Tilagone
Original Assignee
Inst Francais Du Petrole
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 Inst Francais Du Petrole filed Critical Inst Francais Du Petrole
Application granted granted Critical
Publication of ATE170596T1 publication Critical patent/ATE170596T1/en

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
    • F02D41/24—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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
    • F02D35/0015—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for using exhaust gas sensors
    • F02D35/0023—Controlling air supply
    • F02D35/0038—Controlling air supply by means of air pumps
    • 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
    • F02D41/2451—Methods of calibrating or learning characterised by what is learned or calibrated
    • F02D41/2474—Characteristics of 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
    • F02D41/1438—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
    • F02D41/24—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
    • F02D41/2432—Methods of calibration
    • 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
    • F02D41/2451—Methods of calibrating or learning characterised by what is learned or calibrated
    • F02D41/2454—Learning of the air-fuel ratio control

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Abstract

The richness control method is used in an engine (2) having an exhaust pipe (1) which incorporates a two or three-way catalytic converter (3) with an all-or-nothing lambda probe (4) on the downstream side yielding binary information which signifies rich or lean mixture. A second probe (5) of proportional type is placed preferably between the engine and the converter. The control method involves recalibration of the second probe at several operating points corresp. to different mixture strengths. The recalibration of zero richness, corresp. to absence of combustion gas from the exhaust pipe, is preferably delayed for a time after the engine has been stopped.
AT95402920T 1994-12-29 1995-12-22 METHOD AND DEVICE FOR CONTROLLING THE FUEL/AIR RATIO OF AN INTERNAL COMBUSTION ENGINE WITH CONTROLLED IGNITION ATE170596T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9415898A FR2728940A1 (en) 1994-12-29 1994-12-29 PROCESS AND DEVICE FOR CONTROLLING THE RICHNESS OF A CONTROLLED IGNITION ENGINE

Publications (1)

Publication Number Publication Date
ATE170596T1 true ATE170596T1 (en) 1998-09-15

Family

ID=9470436

Family Applications (1)

Application Number Title Priority Date Filing Date
AT95402920T ATE170596T1 (en) 1994-12-29 1995-12-22 METHOD AND DEVICE FOR CONTROLLING THE FUEL/AIR RATIO OF AN INTERNAL COMBUSTION ENGINE WITH CONTROLLED IGNITION

Country Status (5)

Country Link
EP (1) EP0719918B1 (en)
AT (1) ATE170596T1 (en)
DE (1) DE69504468T2 (en)
ES (1) ES2121316T3 (en)
FR (1) FR2728940A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6375828B2 (en) 1997-03-21 2002-04-23 Ngk Spark Plug Co., Ltd. Methods and apparatus for measuring NOx gas concentration, for detecting exhaust gas concentration and for calibrating and controlling gas sensor
DE19810973A1 (en) * 1998-03-13 1999-09-30 Fev Motorentech Gmbh Method for stabilizing the zero point of an exhaust gas sensor and arrangement for carrying out the method
DE10008441A1 (en) * 2000-02-23 2001-09-13 Heraeus Electro Nite Int Method for determining the oxygen content of a sample gas

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3115404A1 (en) * 1981-04-16 1982-11-11 Robert Bosch Gmbh, 7000 Stuttgart METHOD AND DEVICE FOR MONITORING AND CALIBRATING LIMIT CURRENT PROBE
JPS5857050A (en) * 1981-09-29 1983-04-05 Toyota Motor Corp Air-fuel ratio control device of internal-combustion engine
US4502444A (en) * 1983-07-19 1985-03-05 Engelhard Corporation Air-fuel ratio controller
US4751907A (en) * 1985-09-27 1988-06-21 Nissan Motor Co., Ltd. Air/fuel ratio detecting apparatus for internal combustion engines
JPS63239335A (en) * 1987-03-25 1988-10-05 Toyota Motor Corp Air-fuel ratio controller for internal combustion engine
ES2107812T3 (en) * 1993-02-26 1997-12-01 Heraeus Electro Nite Int COMBINATION OF LAMBDA PROBES.

Also Published As

Publication number Publication date
DE69504468T2 (en) 1999-01-28
EP0719918A1 (en) 1996-07-03
FR2728940A1 (en) 1996-07-05
DE69504468D1 (en) 1998-10-08
ES2121316T3 (en) 1998-11-16
EP0719918B1 (en) 1998-09-02
FR2728940B1 (en) 1997-02-21

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