EP0241030A3 - Fuel control method and apparatus therefor - Google Patents

Fuel control method and apparatus therefor Download PDF

Info

Publication number
EP0241030A3
EP0241030A3 EP87105268A EP87105268A EP0241030A3 EP 0241030 A3 EP0241030 A3 EP 0241030A3 EP 87105268 A EP87105268 A EP 87105268A EP 87105268 A EP87105268 A EP 87105268A EP 0241030 A3 EP0241030 A3 EP 0241030A3
Authority
EP
European Patent Office
Prior art keywords
pulse width
running status
area
fuel
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Withdrawn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
EP87105268A
Other languages
German (de)
French (fr)
Other versions
EP0241030A2 (en
Inventor
Kiyomi Morita
Junji Miyake
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Publication of EP0241030A2 publication Critical patent/EP0241030A2/en
Publication of EP0241030A3 publication Critical patent/EP0241030A3/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Withdrawn legal-status Critical Current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
    • 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
    • F02D41/2409—Addressing techniques specially adapted therefor
    • F02D41/2419—Non-linear variation along at least one coordinate
    • 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
    • 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
    • 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
    • F02D41/2445—Methods of calibrating or learning characterised by the learning conditions characterised by a plurality of learning conditions or ranges
    • 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
    • F02D41/2487—Methods for rewriting

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

Disclosed is a fuel-injection system controlling method and an apparatus therefor, in which a running status of an engine (5) is successively detected so as to determine a fuel-injection time on the basis of a fuel-­ injection pulse width and a quantity of pulse width correction in accordance with the detected engine running status. In the method and apparatus, there is provided a map (l) having a plurality of areas corresponding to various running statuses of the engine (5), each of said areas having a quantity of pulse width correction written therein, so that when the engine running status has varied from a certain one area to another one of the map, the boundary of the certain one area is expanded by a predetermined quantity, and if a current engine running status exists in the area encircled by the expanded boundary the pulse width correction quantity is not changed but if the current engine running status exists in a different area outside the area encircled by the expanded boundary the final fuel-injection pulse width is determined on the basis of the pulse width correction quantity written in the different area.
EP87105268A 1986-04-09 1987-04-09 Fuel control method and apparatus therefor Withdrawn EP0241030A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP81647/86 1986-04-09
JP61081647A JPS62240447A (en) 1986-04-09 1986-04-09 Fuel control device

Publications (2)

Publication Number Publication Date
EP0241030A2 EP0241030A2 (en) 1987-10-14
EP0241030A3 true EP0241030A3 (en) 1987-12-09

Family

ID=13752129

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87105268A Withdrawn EP0241030A3 (en) 1986-04-09 1987-04-09 Fuel control method and apparatus therefor

Country Status (3)

Country Link
EP (1) EP0241030A3 (en)
JP (1) JPS62240447A (en)
KR (1) KR870010286A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4418731A1 (en) * 1994-05-28 1995-11-30 Bosch Gmbh Robert Control and regulation of processes in motor vehicles
GB2517164A (en) * 2013-08-13 2015-02-18 Gm Global Tech Operations Inc Method of controlling a fuel injection
DE102013021295B3 (en) * 2013-12-19 2015-05-28 Mtu Friedrichshafen Gmbh Method and control device for monitoring a crankcase pressure
JP2019157755A (en) * 2018-03-13 2019-09-19 株式会社デンソー Control device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2066513A (en) * 1979-12-28 1981-07-08 Honda Motor Co Ltd Automatic control of i c engines
JPS58110838A (en) * 1981-12-25 1983-07-01 Mitsubishi Motors Corp Fuel supply device for engine
GB2116333A (en) * 1982-03-01 1983-09-21 Honda Motor Co Ltd Fuel supply control system for internal combustion engines
US4413602A (en) * 1980-09-16 1983-11-08 Honda Giken Kogyo Kabushiki Kaisha Fuel injection control apparatus for internal combustion engine
US4466411A (en) * 1982-06-09 1984-08-21 Honda Giken Kogyo Kabushiki Kaisha Air/fuel ratio feedback control method for internal combustion engines
EP0145992A2 (en) * 1983-11-21 1985-06-26 Hitachi, Ltd. Method of controlling air-fuel ratio

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0243900B2 (en) * 1985-11-06 1990-10-02 Japan Electronic Control Syst NAINENKIKANNOGAKUSHUSEIGYOSOCHI

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2066513A (en) * 1979-12-28 1981-07-08 Honda Motor Co Ltd Automatic control of i c engines
US4413602A (en) * 1980-09-16 1983-11-08 Honda Giken Kogyo Kabushiki Kaisha Fuel injection control apparatus for internal combustion engine
JPS58110838A (en) * 1981-12-25 1983-07-01 Mitsubishi Motors Corp Fuel supply device for engine
GB2116333A (en) * 1982-03-01 1983-09-21 Honda Motor Co Ltd Fuel supply control system for internal combustion engines
US4466411A (en) * 1982-06-09 1984-08-21 Honda Giken Kogyo Kabushiki Kaisha Air/fuel ratio feedback control method for internal combustion engines
EP0145992A2 (en) * 1983-11-21 1985-06-26 Hitachi, Ltd. Method of controlling air-fuel ratio

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 7, no. 217 (M-245)[1362], 27th September 1983; & JP-A-58 110 838 (MITSUBISHI JIDOSHA KOGYO K.K.) 01-07-1983; *

Also Published As

Publication number Publication date
JPS62240447A (en) 1987-10-21
EP0241030A2 (en) 1987-10-14
KR870010286A (en) 1987-11-30

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Withdrawal date: 19880111

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MORITA, KIYOMI

Inventor name: MIYAKE, JUNJI