GB1480011A - Idle system in a carburettor having a variable area venturi - Google Patents

Idle system in a carburettor having a variable area venturi

Info

Publication number
GB1480011A
GB1480011A GB2621875A GB2621875A GB1480011A GB 1480011 A GB1480011 A GB 1480011A GB 2621875 A GB2621875 A GB 2621875A GB 2621875 A GB2621875 A GB 2621875A GB 1480011 A GB1480011 A GB 1480011A
Authority
GB
United Kingdom
Prior art keywords
venturi
fuel
jet
idle
carburetter
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.)
Expired
Application number
GB2621875A
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.)
Ford Motor Co Ltd
Ford Motor Co
Original Assignee
Ford Motor Co Ltd
Ford Motor Co
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 Ford Motor Co Ltd, Ford Motor Co filed Critical Ford Motor Co Ltd
Priority to GB2621875A priority Critical patent/GB1480011A/en
Priority to FR7616859A priority patent/FR2315009A1/en
Priority to DE19762625978 priority patent/DE2625978C2/en
Priority to ES449004A priority patent/ES449004A1/en
Publication of GB1480011A publication Critical patent/GB1480011A/en
Expired 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
    • F02M17/08—Carburettors having one or more fuel passages opening in a valve-seat surrounding combustion-air passage, the valve being opened by passing air
    • 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
    • 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
    • F02M9/00—Carburettors having air or fuel-air mixture passage throttling valves other than of butterfly type; Carburettors having fuel-air mixing chambers of variable shape or position
    • F02M9/10—Carburettors having air or fuel-air mixture passage throttling valves other than of butterfly type; Carburettors having fuel-air mixing chambers of variable shape or position having valves, or like controls, of elastic-wall type for controlling the passage, or for varying cross-sectional area, of fuel-air mixing chambers or of the entry passage
    • F02M9/106—Pneumatic or hydraulic control

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

1480011 Carburetter idle systems FORD MOTOR CO Ltd 19 June 1975 26218/75 Heading F1H In a variable Venturi carburetter, fuel is supplied to the throttle valve by-pass channel 50 via passage 54 from between main jet 60 and auxiliary jet 62 controlled by a needle 16 carried by the movable Venturi wall. At idle, air, drawn from the Venturi area through jet 62, is premixed with the fuel. Venturi pressure changes due to throttle valve 25 being opened, cause the needle 16 to be withdrawn allowing more fuel to flow from jet 60, fuel passing out into the venturi through jet 62 when a sufficiently low Venturi pressure is achieved. Air bleed 64 ensures that neat fuel does not reach by-pass channel 50. Jets 60, 62 may be cast or threaded into the carburetter and a restricted orifice nozzle 56 may be used to provide sonic idle flow conditions, shock waves being propagated back from the nozzle end towards the orifice.
GB2621875A 1975-06-19 1975-06-19 Idle system in a carburettor having a variable area venturi Expired GB1480011A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB2621875A GB1480011A (en) 1975-06-19 1975-06-19 Idle system in a carburettor having a variable area venturi
FR7616859A FR2315009A1 (en) 1975-06-19 1976-06-03 ADVANCED VENTURI CARBURETOR WITH VARIABLE SECTION
DE19762625978 DE2625978C2 (en) 1975-06-19 1976-06-10 Idle system for constant pressure carburetor
ES449004A ES449004A1 (en) 1975-06-19 1976-06-18 Idle system in a carburettor having a variable area venturi

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2621875A GB1480011A (en) 1975-06-19 1975-06-19 Idle system in a carburettor having a variable area venturi

Publications (1)

Publication Number Publication Date
GB1480011A true GB1480011A (en) 1977-07-20

Family

ID=10240197

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2621875A Expired GB1480011A (en) 1975-06-19 1975-06-19 Idle system in a carburettor having a variable area venturi

Country Status (4)

Country Link
DE (1) DE2625978C2 (en)
ES (1) ES449004A1 (en)
FR (1) FR2315009A1 (en)
GB (1) GB1480011A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4966122A (en) * 1989-04-13 1990-10-30 Siemens Aktiengesellschaft Bypass throttle control for a motor vehicle

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5554655A (en) * 1978-10-19 1980-04-22 Nissan Motor Co Ltd Variable venturi carburetor
JPS58110843A (en) * 1981-12-24 1983-07-01 Toyota Motor Corp Variable venturi type carburetor
US4517134A (en) * 1982-12-27 1985-05-14 Nissan Motor Company, Ltd. Variable venturi carburetor

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1324848A (en) * 1970-06-08 1973-07-25 Zenith Carburetter Co Ltd Carburetters
GB1451100A (en) * 1973-11-16 1976-09-29 Ford Motor Co Carburettor idle system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4966122A (en) * 1989-04-13 1990-10-30 Siemens Aktiengesellschaft Bypass throttle control for a motor vehicle

Also Published As

Publication number Publication date
FR2315009A1 (en) 1977-01-14
ES449004A1 (en) 1977-07-01
FR2315009B1 (en) 1981-08-21
DE2625978A1 (en) 1976-12-30
DE2625978C2 (en) 1983-03-17

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee