EP0255952A3 - Low-speed fuel control system for carburetors - Google Patents

Low-speed fuel control system for carburetors Download PDF

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Publication number
EP0255952A3
EP0255952A3 EP87111377A EP87111377A EP0255952A3 EP 0255952 A3 EP0255952 A3 EP 0255952A3 EP 87111377 A EP87111377 A EP 87111377A EP 87111377 A EP87111377 A EP 87111377A EP 0255952 A3 EP0255952 A3 EP 0255952A3
Authority
EP
European Patent Office
Prior art keywords
low
fuel
speed
passageway
level
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Withdrawn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
EP87111377A
Other languages
German (de)
French (fr)
Other versions
EP0255952A2 (en
Inventor
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 EP0255952A2 publication Critical patent/EP0255952A2/en
Publication of EP0255952A3 publication Critical patent/EP0255952A3/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Withdrawn legal-status Critical Current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
    • F02M3/00—Idling devices for carburettors
    • F02M3/08—Other details of idling devices
    • F02M3/09—Valves responsive to engine conditions, e.g. manifold vacuum
    • 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
    • F02M3/00—Idling devices for carburettors
    • F02M3/08—Other details of idling devices
    • F02M3/12—Passageway systems

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 carburetor comprising a vacuum passageway (10a) connecting a low-speed system venturi (9) with a slow jet (11); a level detecting means (12) capable of detecting whether or not the level of a fuel column to be defined in the vacuum passageway (10a) is higher than a predetermined position; and a solenoid valve (14) capable of switching over the opening degree of a low-speed fuel passageway (15) in response to an output delivered from the level detecting means, in which a flow rate of fuel flowing through the low-speed fuel passageway (15) is controlled so that the level of the fuel column is held at a predetermined position and thereby the fuel having the flow rate suitable for a flow rate of suction air passing through the low-speed system venturi (9) is supplied to an intake bore.
EP87111377A 1986-08-07 1987-08-06 Low-speed fuel control system for carburetors Withdrawn EP0255952A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP12159686 1986-08-07
JP121596/86 1986-08-07

Publications (2)

Publication Number Publication Date
EP0255952A2 EP0255952A2 (en) 1988-02-17
EP0255952A3 true EP0255952A3 (en) 1988-08-10

Family

ID=14815168

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87111377A Withdrawn EP0255952A3 (en) 1986-08-07 1987-08-06 Low-speed fuel control system for carburetors

Country Status (1)

Country Link
EP (1) EP0255952A3 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4201166A (en) * 1977-10-20 1980-05-06 Hitachi, Ltd. Air to fuel ratio control system for internal combustion engine
DE2910605A1 (en) * 1979-03-17 1980-09-25 Pierburg Gmbh & Co Kg Carburettor for IC engine in road vehicle - has photoelectric source with parallel outlet and light deflector in contact with fuel in stand-pipe
JPS5647649A (en) * 1979-09-21 1981-04-30 Aisan Ind Co Ltd Air-fuel mixture feeding apparatus for internal combustion engine
JPS57124062A (en) * 1981-01-26 1982-08-02 Aisan Ind Co Ltd Electronic control type carburetter
JPS6043160A (en) * 1983-08-19 1985-03-07 Aisan Ind Co Ltd Fuel flow amount control device in variable venturi carburettor
EP0207796A2 (en) * 1985-07-05 1987-01-07 Mikuni Kogyo Kabushiki Kaisha Fuel control system for air-fuel mixture supply devices

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4201166A (en) * 1977-10-20 1980-05-06 Hitachi, Ltd. Air to fuel ratio control system for internal combustion engine
DE2910605A1 (en) * 1979-03-17 1980-09-25 Pierburg Gmbh & Co Kg Carburettor for IC engine in road vehicle - has photoelectric source with parallel outlet and light deflector in contact with fuel in stand-pipe
JPS5647649A (en) * 1979-09-21 1981-04-30 Aisan Ind Co Ltd Air-fuel mixture feeding apparatus for internal combustion engine
JPS57124062A (en) * 1981-01-26 1982-08-02 Aisan Ind Co Ltd Electronic control type carburetter
JPS6043160A (en) * 1983-08-19 1985-03-07 Aisan Ind Co Ltd Fuel flow amount control device in variable venturi carburettor
EP0207796A2 (en) * 1985-07-05 1987-01-07 Mikuni Kogyo Kabushiki Kaisha Fuel control system for air-fuel mixture supply devices

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 5, no. 105, 8th July 1981; & JP-A-56 047 649 (AISAN KOGYO) 30-04-1981 *
PATENT ABSTRACTS OF JAPAN, vol. 6, no. 220, 5th November 1982; & JP-A-57 124 062 (AISAN KOGYO) 02-08-1982 *
PATENT ABSTRACTS OF JAPAN, vol. 9, no. 172, 17th July 1985; & JP-A-60 043 160 (AISAN KOGYO) 07-03-1985 *

Also Published As

Publication number Publication date
EP0255952A2 (en) 1988-02-17

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Inventor name: MURAJI, TETSUO