US2328764A - Carburetor - Google Patents

Carburetor Download PDF

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Publication number
US2328764A
US2328764A US347633A US34763340A US2328764A US 2328764 A US2328764 A US 2328764A US 347633 A US347633 A US 347633A US 34763340 A US34763340 A US 34763340A US 2328764 A US2328764 A US 2328764A
Authority
US
United States
Prior art keywords
fuel
passage
venturi
nozzle
carburetor
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 - Lifetime
Application number
US347633A
Other languages
English (en)
Inventor
Emil O Wirth
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.)
Bendix Aviation Corp
Original Assignee
Bendix Aviation 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 Bendix Aviation Corp filed Critical Bendix Aviation Corp
Application granted granted Critical
Publication of US2328764A publication Critical patent/US2328764A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F02M19/00—Details, component parts, or accessories of carburettors, not provided for in, or of interest apart from, the apparatus of groups F02M1/00 - F02M17/00
    • F02M19/03—Fuel atomising nozzles; Arrangement of emulsifying air conduits
    • F02M19/035—Mushroom-shaped atomising nozzles
    • 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
    • F02M19/00—Details, component parts, or accessories of carburettors, not provided for in, or of interest apart from, the apparatus of groups F02M1/00 - F02M17/00
    • F02M19/03—Fuel atomising nozzles; Arrangement of emulsifying air conduits
    • 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
    • F02M19/00—Details, component parts, or accessories of carburettors, not provided for in, or of interest apart from, the apparatus of groups F02M1/00 - F02M17/00
    • F02M19/08—Venturis
    • F02M19/088—Whirl devices and other atomising means in or on the venturi walls
    • 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
    • F02M19/00—Details, component parts, or accessories of carburettors, not provided for in, or of interest apart from, the apparatus of groups F02M1/00 - F02M17/00
    • F02M19/08—Venturis
    • F02M19/10—Venturis in multiple arrangement, e.g. arranged in series, fixed, arranged radially offset with respect to each other
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S261/00—Gas and liquid contact apparatus
    • Y10S261/39—Liquid feeding nozzles

Definitions

  • This invention relates generally to carburetors and particularly to fuel discharge iets for multiple Venturi carburetors.
  • Another object of the invention is to provide a device of this character that has a fuel discharge passage extendinglongitudinally of the carburetor induction passage, the fuel passage flared outwardly at its discharge end.
  • Still another object of the invention is to provide a device of this character wherein fuel is discharged in the direction of air movement in the induction passage.
  • the invention is further characterized by elongation of the fuel discharge opening extending diametrically in the induction passage; and the turi embodying the invention and taken on line embodiment of the invention, a downdraft carburetor having an air horn section It, a main body section l2, and a throttle body section I! having a flange It for attaching the carburetor to the intake manifold of the engine.
  • the carburetor induction passage comprises an air inlet l8 controlled by an offset choke valve 20 mount-' ed on a shaft 22 and controlled by any suitable manual or automatic means, a primary venturi 24, a secondary venturi 26, a mixing chamber 28, and a mixture outlet 30.
  • a throttle valve 82 mounted on throttle shaft 31 controls the mixture outlet in the known manner.
  • a fuel chamber 35 in the main body section has a float 38 mounted by any well known means (not shown) for controlling the level L-L 01' fuel in the chamber.
  • Idling jet 40 of known construction is supplied with idling fuel from chamber 36 by means of communicating passages 42, M and 48, the latter having the usual idling tube 58 secured therein.
  • the lower end of passage 48 communicates with an acceleration well it I formed by an enlargement of the bore in which xtension of the opening entirely across the air Figure l is a vertical section through a carburetor embo v .i. the invention;
  • FIG. 2 is a bottom pian view of the small venmain fuel jet 52, of known construction, is received.
  • the Jet 52 is secured in the bore by a plug lit screwed into a boss formed integral with a wall of the main body section it.
  • the plug 54 is provided with a metering, orifice 56 sup- ,plied with fuel from chamber 86 through passage 5B and air is bled into the jet 52 from an an air bleed B0, in the known manner.'
  • the main fuel discharge nozzle 62 is of the bar type and is formed integral'with the small or primary venturi 24 in the entrance portion thereof, the small venturi being supported in the induction passage by diametrically extending. V
  • the nozzle 62 has a downwardly opening the] discharge passage 66 gradually fiaring convexly outwardly toward the discharge opening 68, the latterbeing at the downstream end of the nozzle so that fuelis discharged in the direction of movement of the air current.
  • the upper end of the passage 86 receives fuel from the main fuel Jet 52 through a duct it.
  • the nozzle 62 directs and discharges fuel in the same direction as the air stream through the venturi in which said nozzle is disposed.
  • the fuel discharge passage extends axially inthe primary venturi thereby directing fuel in a uniform manner relative to the crosssectional area of the venturi.
  • an induction passage including a large and a small venturi, and a relatively narrow bar nozzle integral with the small venturi and extending transversely within same, said nozzle having a fuel passage including a tubular portion coaxial with said small venturi and a narrow convexly flared portion terminating in an elongated discharge slot for discharging 'fuel in the direction of' air flow in the induction passage.
  • a bar nozzle in said induction passage having a fuel discharge duct for discharging fuel into said induction passage, said duct including a tubular portion and a slotted discharge opening substantially rectangular in outline, said tubular portion radually fla utwa y to the ends of the discharge opening, and said flared portion being relatively narrow in width.
  • a bar nozzle in said passage having a fuel discharge passage, said fuel discharge passage terminating at one end in an opening substantially rectangular in outline from which fuel is discharged into the induction passage, said fuel discharge passage being relatively narrow and curving convexly inwardly of the ends of said opening to an inlet portion.
  • a downdraft carburetor having an induc- 5 tion passage, a large and a small venturi included in said induction passage, a narrow bar nozzle in the small venturi and integral therewith, said nozzle being substantially rectangular in cross section and having a convexly flared fuel discharge passage, the fuel discharge passage having a slot-like opening discharging down stream relative to the air current through the small venturi.
  • an induction passage and a relatively narrow bar nozzle therein having a fuel discharge passage including a 5 tubular portion extending longitudinally of the induction passage and a narrow portion gradually flaring from the lower end of said tubular portion to a discharge opening substantially rectangular in outline and of substantially the same 40 width as the diameter of the tubular portion,

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  • 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)
  • Spray-Type Burners (AREA)
US347633A 1940-07-26 1940-07-26 Carburetor Expired - Lifetime US2328764A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US34763340XA 1940-07-26 1940-07-26

Publications (1)

Publication Number Publication Date
US2328764A true US2328764A (en) 1943-09-07

Family

ID=21994161

Family Applications (1)

Application Number Title Priority Date Filing Date
US347633A Expired - Lifetime US2328764A (en) 1940-07-26 1940-07-26 Carburetor

Country Status (4)

Country Link
US (1) US2328764A (de)
DE (1) DE846634C (de)
FR (1) FR874215A (de)
GB (1) GB548890A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2778619A (en) * 1953-06-19 1957-01-22 Air Conversion Res Corp Device for atomizing liquid
US2871841A (en) * 1954-10-04 1959-02-03 Laurence M Goodridge Pressure injection type carburetor
US3814389A (en) * 1972-05-02 1974-06-04 P August Carburetor
US4012468A (en) * 1974-10-31 1977-03-15 Mikuni Kogyo Kabushiki Kaisha Inner venturi tube for carburetor
US4464313A (en) * 1980-12-15 1984-08-07 Societes Anonymes: Automobiles Citroen Et Automobiles Peugeot Carburettor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR555986A (fr) * 1922-09-13 1923-07-10 éjecteur pulvérisateur à vide pour appareils d'alimentation de moteurs à explosions
FR637927A (fr) * 1926-11-23 1928-05-11 Carburateur pour moteur à explosions
US2042770A (en) * 1932-05-07 1936-06-02 Bendix Aviat Corp Carburetor
US2180765A (en) * 1936-03-17 1939-11-21 Carter Carburetor Corp Carburetor device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2778619A (en) * 1953-06-19 1957-01-22 Air Conversion Res Corp Device for atomizing liquid
US2871841A (en) * 1954-10-04 1959-02-03 Laurence M Goodridge Pressure injection type carburetor
US3814389A (en) * 1972-05-02 1974-06-04 P August Carburetor
US4012468A (en) * 1974-10-31 1977-03-15 Mikuni Kogyo Kabushiki Kaisha Inner venturi tube for carburetor
US4464313A (en) * 1980-12-15 1984-08-07 Societes Anonymes: Automobiles Citroen Et Automobiles Peugeot Carburettor

Also Published As

Publication number Publication date
DE846634C (de) 1952-08-14
GB548890A (en) 1942-10-28
FR874215A (fr) 1942-07-31

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