EP0297217A3 - Verfahren zur Verbesserung des Abgasverhaltens von Ottomotoren - Google Patents
Verfahren zur Verbesserung des Abgasverhaltens von Ottomotoren Download PDFInfo
- 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- Withdrawn
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.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3721971 | 1987-07-03 | ||
DE19873721971 DE3721971A1 (de) | 1987-07-03 | 1987-07-03 | Verfahren zur verbesserung des abgasverhaltens von ottomotoren |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0297217A2 EP0297217A2 (de) | 1989-01-04 |
EP0297217A3 true EP0297217A3 (de) | 1989-11-23 |
Family
ID=6330813
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88104624A Withdrawn EP0297217A3 (de) | 1987-07-03 | 1988-03-23 | Verfahren zur Verbesserung des Abgasverhaltens von Ottomotoren |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0297217A3 (de) |
DE (1) | DE3721971A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3925877C2 (de) * | 1989-08-04 | 1998-10-08 | Bosch Gmbh Robert | Verfahren und Einrichtung zur Steuerung der Kraftstoffzumessung bei einer Dieselbrennkraftmaschine |
DE4033026C2 (de) * | 1990-10-18 | 1997-09-04 | Bayerische Motoren Werke Ag | Verfahren zur Vermeidung thermisch kritischer Zustände einer Abgasnachbehandlungsvorrichtung für eine Brennkraftmaschine |
Citations (3)
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 |
-
1987
- 1987-07-03 DE DE19873721971 patent/DE3721971A1/de not_active Withdrawn
-
1988
- 1988-03-23 EP EP88104624A patent/EP0297217A3/de not_active Withdrawn
Patent Citations (3)
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 |
---|---|
DE3721971A1 (de) | 1989-01-12 |
EP0297217A2 (de) | 1989-01-04 |
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Legal Events
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): DE FR GB SE |
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PUAL | Search report despatched |
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AK | Designated contracting states |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19900524 |