GB303492A - Improvements in carburettors for internal combustion engines - Google Patents

Improvements in carburettors for internal combustion engines

Info

Publication number
GB303492A
GB303492A GB22935/28A GB2293528A GB303492A GB 303492 A GB303492 A GB 303492A GB 22935/28 A GB22935/28 A GB 22935/28A GB 2293528 A GB2293528 A GB 2293528A GB 303492 A GB303492 A GB 303492A
Authority
GB
United Kingdom
Prior art keywords
valve
venturi
engine
supplied
fuel
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
GB22935/28A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB303492A publication Critical patent/GB303492A/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
    • F02M13/00—Arrangements of two or more separate carburettors; Carburettors using more than one fuel
    • F02M13/02—Separate carburettors
    • 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
    • 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/02—Feeding by means of suction apparatus, e.g. by air flow through carburettors
    • 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
    • F02M5/00—Float-controlled apparatus for maintaining a constant fuel level
    • F02M5/12—Other details, e.g. floats, valves, setting devices or tools
    • F02M5/14—Float chambers, e.g. adjustable in position
    • 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
    • F02M7/14—Other installations, with moving parts, for influencing fuel/air ratio, e.g. having valves with means for controlling cross-sectional area of fuel spray nozzle
    • F02M7/16—Other installations, with moving parts, for influencing fuel/air ratio, e.g. having valves with means for controlling cross-sectional area of fuel spray nozzle operated automatically, e.g. dependent on exhaust-gas analysis
    • F02M7/17—Other installations, with moving parts, for influencing fuel/air ratio, e.g. having valves with means for controlling cross-sectional area of fuel spray nozzle operated automatically, e.g. dependent on exhaust-gas analysis by a pneumatically adjustable piston-like element, e.g. constant depression carburettors

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

303,492. Seignol, E. Jan. 6, 1928, [Convention date]. Spray-carburettors.- A Venturi tube 1, to the interior of which fuel or rich mixture is supplied from an annular space 8 through apertures 9, is provided at its inlet end with an air-admission valve 2 mounted on a trunk of a piston 4 which is subjected on its lower face to the suction in the Venturi through a movable orifice 6 at the top of the trunk. The piston 4 is loaded by a spring 7 and moves in a cylinder 5 the upper end of which has an airescape orifice 14. The air supply to the Venturi is admitted through ports 11. When the throttle valve 12 is closed, the spring 7 forces up the valve 2 to obstruct the Venturi, and the engine is supplied through a valve-controlled bye-pass. If the valve 12 is opened to give a mean running speed, the suction in the Venturi has a mean value, and the valve 2 is lowered to a position somewhat as shown in the Figure. Thus the orifice 6 will be brought nearer the throat of the Venturi, but at the same time the passage around the valve 2 will be enlarged. Further opening of the valve 12 will result in the piston 4 and valve 2 being brought to their lowest position. If, with the valve 12 fully open, the engine has to meet an excessive load involving a decrease of speed, it is necessary to avoid choking the engine with excess of air and this is brought about by the combined effect of the decreased suction and the spring 7 which causes the valve 2 to move nearer its closed position but, owing to the shape of the valve 2, the air speed past the apertures remains high. The rich mixture supplied to the annular space 8 and to the bye-pass respectively may be formed in primary carburettors constituted by two Venturi tubes located on or near a fuel tank situated below and at some distance from the engine. The Venturis raise the fuel from a float chamber located at the bottom of the fuel tank, Fig. 4 (not shown). In a modification, the space 8 and the bye-pass are supplied with fuel through a calibrated orifice fed from a float chamber the level in which is maintained rigorously constant by the means described in Specification 284,226.
GB22935/28A 1928-01-06 1928-08-08 Improvements in carburettors for internal combustion engines Expired GB303492A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR303492X 1928-01-06

Publications (1)

Publication Number Publication Date
GB303492A true GB303492A (en) 1929-07-25

Family

ID=8888721

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22935/28A Expired GB303492A (en) 1928-01-06 1928-08-08 Improvements in carburettors for internal combustion engines

Country Status (1)

Country Link
GB (1) GB303492A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3738625A (en) * 1970-12-10 1973-06-12 Briggs & Stratton Corp Pumpless fuel system for small engines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3738625A (en) * 1970-12-10 1973-06-12 Briggs & Stratton Corp Pumpless fuel system for small engines

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