EP0306906A3 - Feedback control device for the air-fuel ratio of a combustion engine - Google Patents

Feedback control device for the air-fuel ratio of a combustion engine Download PDF

Info

Publication number
EP0306906A3
EP0306906A3 EP88114559A EP88114559A EP0306906A3 EP 0306906 A3 EP0306906 A3 EP 0306906A3 EP 88114559 A EP88114559 A EP 88114559A EP 88114559 A EP88114559 A EP 88114559A EP 0306906 A3 EP0306906 A3 EP 0306906A3
Authority
EP
European Patent Office
Prior art keywords
speed
counter
air
control device
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.)
Withdrawn
Application number
EP88114559A
Other languages
German (de)
French (fr)
Other versions
EP0306906A2 (en
Inventor
Johann Margreiter
Bernhard Hofer
Günther Dipl.-Ing. Rabanser
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.)
Innio Jenbacher GmbH and Co OG
Original Assignee
Jenbacher Werke 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 Jenbacher Werke AG filed Critical Jenbacher Werke AG
Publication of EP0306906A2 publication Critical patent/EP0306906A2/en
Publication of EP0306906A3 publication Critical patent/EP0306906A3/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Withdrawn legal-status Critical Current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
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1497—With detection of the mechanical response of the engine
    • F02D41/1498—With detection of the mechanical response of the engine measuring engine roughness
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
    • F02D2200/1015—Engines misfires

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

Einrichtung zur Regelung des Verbrennungs-Luftverhältnisses (λ) eines im Magerbetrieb betriebenen Motors (1) in Abhängigkeit von Drehzahlschwankungen desselben. Es ist eine Drehzahlanalyseschaltung (22) vorgesehen, die ein elektrisches Drehzahlsignal auf Schwankungen analysiert. Die Drehzahlanalyseschaltung (22) weist dazu ein Hoch­ paßfilter (24), ein Differenzierglied (25) und einen diesem nachgeschalteten Komparator auf, dessen Ausgang (26a) mit einem digitalen Zähler (27) verbunden ist und der das gefilterte und differenzierte Drehzahlsignal mit einem Schwellwert vergleicht und bei überschreiten desselben den Zählerstand des Zählers (27) innerhalb einer von einem Zeitgeber (28) vorgegebenen Meßperiode verändert. Gemäß dem Zählerstand am Ende jeder Meßperiode, der eine Laufunruhemaß darstellt, wird das Verbrennungs-Luft­ verhältnis (λ) geregelt. Device for regulating the combustion-air ratio (λ) of a lean engine (1) in Dependence on speed fluctuations of the same. It is a speed analysis circuit (22) is provided which electrical speed signal analyzed for fluctuations. The speed analysis circuit (22) has a high for this pass filter (24), a differentiator (25) and one this comparator, whose output (26a) is connected to a digital counter (27) and the the filtered and differentiated speed signal with one Compares the threshold value and exceeds it the counter reading of the counter (27) within one of a timer (28) predetermined measurement period changed. According to the meter reading at the end of each measuring period, the one Uneven running represents the combustion air ratio (λ) regulated.

EP88114559A 1987-09-09 1988-09-07 Feedback control device for the air-fuel ratio of a combustion engine Withdrawn EP0306906A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT227887A AT388029B (en) 1987-09-09 1987-09-09 DEVICE FOR CONTROLLING THE COMBUSTION AIR RATIO OF AN INTERNAL COMBUSTION ENGINE
AT2278/87 1987-09-09

Publications (2)

Publication Number Publication Date
EP0306906A2 EP0306906A2 (en) 1989-03-15
EP0306906A3 true EP0306906A3 (en) 1989-07-26

Family

ID=3531387

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88114559A Withdrawn EP0306906A3 (en) 1987-09-09 1988-09-07 Feedback control device for the air-fuel ratio of a combustion engine

Country Status (2)

Country Link
EP (1) EP0306906A3 (en)
AT (1) AT388029B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2650633B1 (en) * 1989-08-02 1994-04-29 Renault METHOD FOR CONTROLLING THE SLOW MOTION OF AN INTERNAL COMBUSTION ENGINE
DE19733958A1 (en) * 1997-08-06 1999-02-11 Bosch Gmbh Robert Method and device for correcting tolerances of a sensor wheel
DE102012215434B4 (en) * 2012-08-30 2023-02-16 Bayerische Motoren Werke Aktiengesellschaft deriving a digital signal having a fixed quantization

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2005443A (en) * 1977-09-26 1979-04-19 Bendix Corp Acceleration enrichment for closed loop control systems
US4509484A (en) * 1983-05-16 1985-04-09 General Motors Corporation Closed loop lean air/fuel ratio controller
US4519366A (en) * 1982-03-24 1985-05-28 May Michael G Method and apparatus for controlling the composition of the combustion charge in internal combustion engines
US4683856A (en) * 1984-08-28 1987-08-04 Mazda Motor Corporation Engine roughness control means

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3872846A (en) * 1972-04-24 1975-03-25 Bendix Corp Exhaust gas recirculation (EGR) internal combustion engine roughness control system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2005443A (en) * 1977-09-26 1979-04-19 Bendix Corp Acceleration enrichment for closed loop control systems
US4519366A (en) * 1982-03-24 1985-05-28 May Michael G Method and apparatus for controlling the composition of the combustion charge in internal combustion engines
US4509484A (en) * 1983-05-16 1985-04-09 General Motors Corporation Closed loop lean air/fuel ratio controller
US4683856A (en) * 1984-08-28 1987-08-04 Mazda Motor Corporation Engine roughness control means

Also Published As

Publication number Publication date
AT388029B (en) 1989-04-25
EP0306906A2 (en) 1989-03-15
ATA227887A (en) 1988-09-15

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