EP0297217A3 - Method for improving the composition of exhaust gases in otto engines - Google Patents

Method for improving the composition of exhaust gases in otto engines Download PDF

Info

Publication number
EP0297217A3
EP0297217A3 EP88104624A EP88104624A EP0297217A3 EP 0297217 A3 EP0297217 A3 EP 0297217A3 EP 88104624 A EP88104624 A EP 88104624A EP 88104624 A EP88104624 A EP 88104624A EP 0297217 A3 EP0297217 A3 EP 0297217A3
Authority
EP
European Patent Office
Prior art keywords
improving
otto
composition
exhaust gases
controller
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Withdrawn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
EP88104624A
Other languages
German (de)
French (fr)
Other versions
EP0297217A2 (en
Inventor
Bernhard Lukas
Wolfgang Reisch
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.)
Mannesmann VDO AG
Original Assignee
Mannesmann VDO 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 Mannesmann VDO AG filed Critical Mannesmann VDO AG
Publication of EP0297217A2 publication Critical patent/EP0297217A2/en
Publication of EP0297217A3 publication Critical patent/EP0297217A3/en
Withdrawn legal-status Critical Current

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
    • F02D41/2451—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)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

Bei einem Verfahren zur Verbesserung des Abgasverhal­ tens von Ottomotoren, wobei das Ausgangssignal einer im Abgaskanal des Ottomotors angeordneten Sauerstoff­ meßsonde einem Regler zugeführt wird und die Aus­ gangsspannung des Reglers eine Stellgröße zur Rege­ lung des Luft/Kraftstoff-Verhältnisses bildet, wird der Ausgangsspannung des Reglers eine weitere Span­ nung überlagert, die einem gespeicherten Kennfeld in Abhängigkeit von Betriebsparametern des Ottomotors entnommen wird. Dabei kann das Kennfeld während des Betriebes des Ottomotors an Veränderungen des Otto­ motors angepaßt werden. In a method for improving exhaust gas behavior tens of gasoline engines, the output signal of one Oxygen arranged in the exhaust gas duct of the gasoline engine measuring probe is fed to a controller and the off output voltage of the controller a manipulated variable to the rain air / fuel ratio is formed the output voltage of the regulator another span overlaid on a stored map in Dependency on operating parameters of the gasoline engine is removed. The map can during the Operation of the Otto engine with changes to the Otto motors can be adjusted.

EP88104624A 1987-07-03 1988-03-23 Method for improving the composition of exhaust gases in otto engines Withdrawn EP0297217A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873721971 DE3721971A1 (en) 1987-07-03 1987-07-03 METHOD FOR IMPROVING THE EXHAUST GAS BEHAVIOR OF OTTO ENGINES
DE3721971 1987-07-03

Publications (2)

Publication Number Publication Date
EP0297217A2 EP0297217A2 (en) 1989-01-04
EP0297217A3 true EP0297217A3 (en) 1989-11-23

Family

ID=6330813

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88104624A Withdrawn EP0297217A3 (en) 1987-07-03 1988-03-23 Method for improving the composition of exhaust gases in otto engines

Country Status (2)

Country Link
EP (1) EP0297217A3 (en)
DE (1) DE3721971A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3925877C2 (en) * 1989-08-04 1998-10-08 Bosch Gmbh Robert Method and device for controlling the fuel metering in a diesel internal combustion engine
DE4033026C2 (en) * 1990-10-18 1997-09-04 Bayerische Motoren Werke Ag Method for avoiding thermally critical states of an exhaust gas aftertreatment device for an internal combustion engine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4466410A (en) * 1981-07-15 1984-08-21 Nippondenso Co., Ltd. Air-fuel ratio control for internal combustion engine
US4594985A (en) * 1983-12-29 1986-06-17 Toyota Jidosha Kabushiki Kaisha Method and apparatus of learning control for air/fuel ratio of an internal combustion engine to avoid sticking to lean or rich side operation
US4669439A (en) * 1984-09-10 1987-06-02 Mazda Motor Corporation Air-to-fuel ratio control systems for internal combustion engines

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4466410A (en) * 1981-07-15 1984-08-21 Nippondenso Co., Ltd. Air-fuel ratio control for internal combustion engine
US4594985A (en) * 1983-12-29 1986-06-17 Toyota Jidosha Kabushiki Kaisha Method and apparatus of learning control for air/fuel ratio of an internal combustion engine to avoid sticking to lean or rich side operation
US4669439A (en) * 1984-09-10 1987-06-02 Mazda Motor Corporation Air-to-fuel ratio control systems for internal combustion engines

Also Published As

Publication number Publication date
EP0297217A2 (en) 1989-01-04
DE3721971A1 (en) 1989-01-12

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