EP0046599A3 - Air-fuel ratio control system for an internal combustion engine - Google Patents

Air-fuel ratio control system for an internal combustion engine Download PDF

Info

Publication number
EP0046599A3
EP0046599A3 EP81106638A EP81106638A EP0046599A3 EP 0046599 A3 EP0046599 A3 EP 0046599A3 EP 81106638 A EP81106638 A EP 81106638A EP 81106638 A EP81106638 A EP 81106638A EP 0046599 A3 EP0046599 A3 EP 0046599A3
Authority
EP
European Patent Office
Prior art keywords
engine
fuel ratio
air
fuel
solenoid
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Withdrawn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
EP81106638A
Other languages
German (de)
French (fr)
Other versions
EP0046599A2 (en
Inventor
Toshio Manaka
Takeshi Atago
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 EP0046599A2 publication Critical patent/EP0046599A2/en
Publication of EP0046599A3 publication Critical patent/EP0046599A3/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Withdrawn legal-status Critical Current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
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/10—Introducing corrections for particular operating conditions for acceleration
    • F02D41/107—Introducing corrections for particular operating conditions for acceleration and deceleration
    • 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
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
    • F02D41/068—Introducing corrections for particular operating conditions for engine starting or warming up for warming-up
    • 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
    • F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Control Of The Air-Fuel Ratio Of Carburetors (AREA)
  • Means For Warming Up And Starting Carburetors (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Abstract

An air-fuel ratio control system having solenoid-­ actuated valves (71, 73) disposed in the fuel passage and the air bleed communicated with the fuel passage of a carbure­ tor (5), an electric memory memorizing the data concerning the opening rates of the solenoid-actuated valves for attain­ ing a constant air-fuel ratio through driving of these valves, in relation to the engine speed (N) and the intake vacuum (VC) of the engine, and a controller adapted to control the solenoid-actuated valves at an opening rate which is given as the product of the data read out from the electric memory and a fuel increment coefficient which differs according to the state of engine operation such as acceleration, decelera­ tion and so forth of the engine and which varies depending on the engine temperature (TW). A correction of the air-fuel ratio is performed in accordance with the engine tempera­ ture (TW). When the engine is intentionally accelerated or decelerated during warming up of the engine, the rate of fuel supply from the carburetor (5) is changed in accordance with such a change of engine operation to always optimize the ai-fuel ratio of the mixture.
EP81106638A 1980-08-27 1981-08-26 Air-fuel ratio control system for an internal combustion engine Withdrawn EP0046599A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP116918/80 1980-08-27
JP11691880A JPS5741441A (en) 1980-08-27 1980-08-27 Warming-up correcting device for air fuel ratio controller

Publications (2)

Publication Number Publication Date
EP0046599A2 EP0046599A2 (en) 1982-03-03
EP0046599A3 true EP0046599A3 (en) 1982-08-04

Family

ID=14698878

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81106638A Withdrawn EP0046599A3 (en) 1980-08-27 1981-08-26 Air-fuel ratio control system for an internal combustion engine

Country Status (2)

Country Link
EP (1) EP0046599A3 (en)
JP (1) JPS5741441A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9464588B2 (en) 2013-08-15 2016-10-11 Kohler Co. Systems and methods for electronically controlling fuel-to-air ratio for an internal combustion engine

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59539A (en) * 1982-06-25 1984-01-05 Honda Motor Co Ltd Air-fuel ratio control of air-fuel mixture for internal- combustion engine of vehicle
JP2835446B2 (en) * 1988-01-25 1998-12-14 日本電子科学株式会社 Surge judgment device for vehicles
DE3939548A1 (en) * 1989-11-30 1991-06-06 Bosch Gmbh Robert ELECTRONIC CONTROL SYSTEM FOR FUEL MEASURING IN AN INTERNAL COMBUSTION ENGINE
US10054081B2 (en) 2014-10-17 2018-08-21 Kohler Co. Automatic starting system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2345594A1 (en) * 1976-03-26 1977-10-21 Bosch Gmbh Robert CIRCUIT DEVICE FOR ENRICHMENT, WHEN HEATING THE MIXTURE SENT TO AN INTERNAL COMBUSTION ENGINE
FR2389770A1 (en) * 1977-05-06 1978-12-01 Sibe Electronic control for IC engine carburettor - has computer memory storing information from warm running for electronic circuit control
US4190618A (en) * 1979-03-02 1980-02-26 General Motors Corporation Carburetor
GB2041579A (en) * 1979-01-16 1980-09-10 Hitachi Ltd Control apparatus for internal combustion engine of carburettor type
DE3010583A1 (en) * 1979-03-19 1980-10-09 Nissan Motor METHOD FOR CONTROLLING THE FUEL SUPPLY TO AN INTERNAL COMBUSTION ENGINE
GB2049992A (en) * 1979-04-21 1980-12-31 Nissan Motor Automatic control of fuel supply in i.c. engines

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5344613A (en) * 1976-09-30 1978-04-21 Eisai Co Ltd Tumor vaccine containing lectin/tumor cell-complex

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2345594A1 (en) * 1976-03-26 1977-10-21 Bosch Gmbh Robert CIRCUIT DEVICE FOR ENRICHMENT, WHEN HEATING THE MIXTURE SENT TO AN INTERNAL COMBUSTION ENGINE
FR2389770A1 (en) * 1977-05-06 1978-12-01 Sibe Electronic control for IC engine carburettor - has computer memory storing information from warm running for electronic circuit control
GB2041579A (en) * 1979-01-16 1980-09-10 Hitachi Ltd Control apparatus for internal combustion engine of carburettor type
US4190618A (en) * 1979-03-02 1980-02-26 General Motors Corporation Carburetor
DE3010583A1 (en) * 1979-03-19 1980-10-09 Nissan Motor METHOD FOR CONTROLLING THE FUEL SUPPLY TO AN INTERNAL COMBUSTION ENGINE
GB2049992A (en) * 1979-04-21 1980-12-31 Nissan Motor Automatic control of fuel supply in i.c. engines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9464588B2 (en) 2013-08-15 2016-10-11 Kohler Co. Systems and methods for electronically controlling fuel-to-air ratio for an internal combustion engine

Also Published As

Publication number Publication date
EP0046599A2 (en) 1982-03-03
JPS5741441A (en) 1982-03-08

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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

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AK Designated contracting states

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PUAL Search report despatched

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Effective date: 19820813

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18W Application withdrawn

Withdrawal date: 19850220

RIN1 Information on inventor provided before grant (corrected)

Inventor name: ATAGO, TAKESHI

Inventor name: MANAKA, TOSHIO