EP0263495A3 - Fuel supply device for carburetors - Google Patents

Fuel supply device for carburetors Download PDF

Info

Publication number
EP0263495A3
EP0263495A3 EP87114594A EP87114594A EP0263495A3 EP 0263495 A3 EP0263495 A3 EP 0263495A3 EP 87114594 A EP87114594 A EP 87114594A EP 87114594 A EP87114594 A EP 87114594A EP 0263495 A3 EP0263495 A3 EP 0263495A3
Authority
EP
European Patent Office
Prior art keywords
fuel
passageway
negative pressure
fuel supply
carburetors
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Withdrawn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
EP87114594A
Other languages
German (de)
French (fr)
Other versions
EP0263495A2 (en
Inventor
Mitsuru Sekiya
Tetsuo Muraji
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.)
Mikuni Corp
Original Assignee
Mikuni Corp
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 Mikuni Corp filed Critical Mikuni Corp
Publication of EP0263495A2 publication Critical patent/EP0263495A2/en
Publication of EP0263495A3 publication Critical patent/EP0263495A3/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Withdrawn legal-status Critical Current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
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M17/00—Carburettors having pertinent characteristics not provided for in, or of interest apart from, the apparatus of preceding main groups F02M1/00 - F02M15/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M7/00—Carburettors with means for influencing, e.g. enriching or keeping constant, fuel/air ratio of charge under varying conditions
    • F02M7/12—Other installations, with moving parts, for influencing fuel/air ratio, e.g. having valves
    • F02M7/18—Other installations, with moving parts, for influencing fuel/air ratio, e.g. having valves with means for controlling cross-sectional area of fuel-metering orifice
    • F02M7/20—Other installations, with moving parts, for influencing fuel/air ratio, e.g. having valves with means for controlling cross-sectional area of fuel-metering orifice operated automatically, e.g. dependent on altitude
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M7/00—Carburettors with means for influencing, e.g. enriching or keeping constant, fuel/air ratio of charge under varying conditions
    • F02M7/12—Other installations, with moving parts, for influencing fuel/air ratio, e.g. having valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M7/00—Carburettors with means for influencing, e.g. enriching or keeping constant, fuel/air ratio of charge under varying conditions
    • F02M7/12—Other installations, with moving parts, for influencing fuel/air ratio, e.g. having valves
    • F02M7/133—Auxiliary jets, i.e. operating only under certain conditions, e.g. full power

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of The Air-Fuel Ratio Of Carburetors (AREA)

Abstract

A fuel supply device for carburetors of the type which provides a branch passageway (17) communicating with a fuel passageway between a fuel metering jet (4) and a connection of a fuel passageway (6) with a negative pressure passageway (9) and a float chamber (5), places a diaphragm type enriched valve (32), in the middle of the branch passageway, controlled in accordance with the variation of the negative pressure generated on the downstream side of a solenoid valve or a throttle valve controlled by signals issued from various sensors detecting an operating condition of an engine and controls a fuel flow rate so that the level of a fuel column to be formed in the negative pressure passageway for intake flow rate detection communicating with the fuel passageway is kept constant, in order to enable a fuel supply to be positively performed with respect to any transient state of engine operation.
EP87114594A 1986-10-06 1987-10-06 Fuel supply device for carburetors Withdrawn EP0263495A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP153598/86 1986-10-06
JP1986153598U JPS63174556U (en) 1986-10-06 1986-10-06

Publications (2)

Publication Number Publication Date
EP0263495A2 EP0263495A2 (en) 1988-04-13
EP0263495A3 true EP0263495A3 (en) 1989-06-28

Family

ID=15565988

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87114594A Withdrawn EP0263495A3 (en) 1986-10-06 1987-10-06 Fuel supply device for carburetors

Country Status (3)

Country Link
EP (1) EP0263495A3 (en)
JP (1) JPS63174556U (en)
KR (1) KR880005352A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3235237A (en) * 1965-02-15 1966-02-15 Holley Carburetor Co De-popper valve
US3587651A (en) * 1968-12-23 1971-06-28 Holley Carburetor Co Multistage power valve assembly
US4084562A (en) * 1972-08-08 1978-04-18 Robert Bosch Gmbh Fuel metering device
DE3028091A1 (en) * 1979-08-02 1981-03-26 Fuji Jukogyo K.K., Tokio/Tokyo ELECTRONIC CONTROL SYSTEM FOR A CARBURETTOR
EP0207796A2 (en) * 1985-07-05 1987-01-07 Mikuni Kogyo Kabushiki Kaisha Fuel control system for air-fuel mixture supply devices

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3235237A (en) * 1965-02-15 1966-02-15 Holley Carburetor Co De-popper valve
US3587651A (en) * 1968-12-23 1971-06-28 Holley Carburetor Co Multistage power valve assembly
US4084562A (en) * 1972-08-08 1978-04-18 Robert Bosch Gmbh Fuel metering device
DE3028091A1 (en) * 1979-08-02 1981-03-26 Fuji Jukogyo K.K., Tokio/Tokyo ELECTRONIC CONTROL SYSTEM FOR A CARBURETTOR
EP0207796A2 (en) * 1985-07-05 1987-01-07 Mikuni Kogyo Kabushiki Kaisha Fuel control system for air-fuel mixture supply devices

Also Published As

Publication number Publication date
EP0263495A2 (en) 1988-04-13
KR880005352A (en) 1988-06-28
JPS63174556U (en) 1988-11-11

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Inventor name: SEKIYA, MITSURU

Inventor name: MURAJI, TETSUO