EP0848151A3 - Method of closed loop control of the air/fuel ration of an internal combustion engine - Google Patents

Method of closed loop control of the air/fuel ration of an internal combustion engine Download PDF

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Publication number
EP0848151A3
EP0848151A3 EP97120602A EP97120602A EP0848151A3 EP 0848151 A3 EP0848151 A3 EP 0848151A3 EP 97120602 A EP97120602 A EP 97120602A EP 97120602 A EP97120602 A EP 97120602A EP 0848151 A3 EP0848151 A3 EP 0848151A3
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EP
European Patent Office
Prior art keywords
combustion engine
internal combustion
output signal
air
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.)
Granted
Application number
EP97120602A
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German (de)
French (fr)
Other versions
EP0848151B1 (en
EP0848151A2 (en
Inventor
Ulrich Staufenberg
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
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
Priority to US09/010,208 priority Critical patent/US6062019A/en
Publication of EP0848151A2 publication Critical patent/EP0848151A2/en
Publication of EP0848151A3 publication Critical patent/EP0848151A3/en
Application granted granted Critical
Publication of EP0848151B1 publication Critical patent/EP0848151B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F02D41/1477—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the regulation circuit or part of it,(e.g. comparator, PI regulator, output)
    • F02D41/1483—Proportional component
    • 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

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)

Abstract

Die Erfindung betrifft ein Verfahren zur Regelung des Kraftstoff-Luft-Verhältnisses einer Brennkraftmaschine, wobei das Ausgangssignal einer ersten Lambdasonde, die im Abgaskanal der Brennkraftmaschine vor einem Katalysator angeordnet ist, einem Regler zugeführt wird, welcher eine PI-Charakteristik aufweist, und der Regler eine Stellgröße für das Kraftstoff-Luft-Verhältnis abgibt und daß dem Regler ein weiteres Signal zugeführt wird, welches aus dem Ausgangssignal einer zweiten, dem Katalysator nachgeordneten Lambdasonde gewonnen wird, und auf den Regelkreis der ersten Lambdasonde einwirkt.The invention relates to a method for regulating the fuel-air ratio an internal combustion engine, the output signal of a first Lambda sensor in the exhaust duct of the internal combustion engine in front of a catalytic converter is arranged, a controller is supplied, which has a PI characteristic has, and the controller a manipulated variable for the fuel-air ratio emits and that the controller is fed another signal, which from the output signal of a second, downstream of the catalyst Lambda probe is obtained, and on the control loop of the first Lambda sensor acts.

Um eine genaue und anpassungsfähige Regelung zu ermöglichen, wird der P-Anteil des Ausgangssignals des Regelkreises der ersten Lambdasonde in Abhängigkeit des Ausgangssignals der zweiten Lamdasonde geändert.

Figure 00000001
In order to enable precise and adaptable control, the P component of the output signal of the control circuit of the first lambda probe is changed as a function of the output signal of the second lambda probe.
Figure 00000001
EP97120602A 1996-12-12 1997-11-25 Method of closed loop control of the air/fuel ratio of an internal combustion engine Expired - Lifetime EP0848151B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US09/010,208 US6062019A (en) 1997-11-25 1998-01-21 Method for controlling the fuel/air ratio of an internal combustion engine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19651613 1996-12-12
DE19651613A DE19651613C1 (en) 1996-12-12 1996-12-12 Method for regulating the fuel-air ratio of an internal combustion engine

Publications (3)

Publication Number Publication Date
EP0848151A2 EP0848151A2 (en) 1998-06-17
EP0848151A3 true EP0848151A3 (en) 1999-05-12
EP0848151B1 EP0848151B1 (en) 2004-01-28

Family

ID=7814430

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97120602A Expired - Lifetime EP0848151B1 (en) 1996-12-12 1997-11-25 Method of closed loop control of the air/fuel ratio of an internal combustion engine

Country Status (2)

Country Link
EP (1) EP0848151B1 (en)
DE (2) DE19651613C1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5848528A (en) * 1997-08-13 1998-12-15 Siemens Automotive Corporation Optimization of closed-loop and post O2 fuel control by measuring catalyst oxygen storage capacity
DE102006049656B4 (en) * 2006-10-18 2016-02-11 Volkswagen Ag Lambda control with a jump lambda probe

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3500594A1 (en) * 1985-01-10 1986-07-17 Robert Bosch Gmbh, 7000 Stuttgart Metering system for an internal combustion engine for influencing the operating mixture
JPH01155046A (en) * 1987-12-14 1989-06-16 Japan Electron Control Syst Co Ltd Electronic control fuel injection system for internal combustion engine
US5115639A (en) * 1991-06-28 1992-05-26 Ford Motor Company Dual EGO sensor closed loop fuel control
US5203165A (en) * 1990-07-31 1993-04-20 Robert Bosch Gmbh Method for the lambda control of an internal combustion engine having a catalyzer
US5341641A (en) * 1990-05-28 1994-08-30 Nissan Motor Co., Ltd. Dual sensor type air fuel ratio control system for internal combustion engine
JPH07305647A (en) * 1994-05-09 1995-11-21 Honda Motor Co Ltd Air-fuel ratio controller of internal combustion engine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3500594A1 (en) * 1985-01-10 1986-07-17 Robert Bosch Gmbh, 7000 Stuttgart Metering system for an internal combustion engine for influencing the operating mixture
JPH01155046A (en) * 1987-12-14 1989-06-16 Japan Electron Control Syst Co Ltd Electronic control fuel injection system for internal combustion engine
US5341641A (en) * 1990-05-28 1994-08-30 Nissan Motor Co., Ltd. Dual sensor type air fuel ratio control system for internal combustion engine
US5203165A (en) * 1990-07-31 1993-04-20 Robert Bosch Gmbh Method for the lambda control of an internal combustion engine having a catalyzer
US5115639A (en) * 1991-06-28 1992-05-26 Ford Motor Company Dual EGO sensor closed loop fuel control
JPH07305647A (en) * 1994-05-09 1995-11-21 Honda Motor Co Ltd Air-fuel ratio controller of internal combustion engine
US5661972A (en) * 1994-05-09 1997-09-02 Honda Giken Kogyo Kabushiki Kaisha Air-fuel ratio control system for internal combustion engines

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 013, no. 418 (M - 871) 18 September 1989 (1989-09-18) *

Also Published As

Publication number Publication date
DE19651613C1 (en) 1998-08-06
EP0848151B1 (en) 2004-01-28
EP0848151A2 (en) 1998-06-17
DE59711258D1 (en) 2004-03-04

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