US2255296A - Carburetor nozzle - Google Patents

Carburetor nozzle Download PDF

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Publication number
US2255296A
US2255296A US248443A US24844338A US2255296A US 2255296 A US2255296 A US 2255296A US 248443 A US248443 A US 248443A US 24844338 A US24844338 A US 24844338A US 2255296 A US2255296 A US 2255296A
Authority
US
United States
Prior art keywords
nozzle
fuel
orifice
carburetor
air
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
US248443A
Other languages
English (en)
Inventor
James T W Moseley
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.)
Carter Carburetor Corp
Original Assignee
Carter Carburetor 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
Priority to FR961987D priority Critical patent/FR961987A/fr
Priority to BE480774D priority patent/BE480774A/xx
Application filed by Carter Carburetor Corp filed Critical Carter Carburetor Corp
Priority to US248443A priority patent/US2255296A/en
Application granted granted Critical
Publication of US2255296A publication Critical patent/US2255296A/en
Priority to GB5518/48A priority patent/GB649920A/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
    • F02M7/00—Carburettors with means for influencing, e.g. enriching or keeping constant, fuel/air ratio of charge under varying conditions
    • F02M7/10—Other installations, without moving parts, for influencing fuel/air ratio, e.g. electrical means
    • 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
    • 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 to carburetorsfor in-H ternal combustion engines and consists, particularly, in novel fuel nozzle construction therefor.
  • main nozzle that is,.one in which the axis of the discharge orifice thereof is disposed at an angle of 90 or less to the direction of air flow therepast, more fuel is supplied in the lower suction ranges, but there may be a tendency toward excessive richness at the higher suctions when the associated engine is operating at a faster rate and a relatively lean mixture will sufllce.
  • inemcient type of main nozzle which discharges at an angle against the air stream, maintains the mixture proportions desirably.
  • the fuel mixture supperiods may be someplied during lower suction what enriched by the use of multiple venturis or by increasing the size of fuel passages through which the main nozzle is fed.
  • the quality -of-fuel and air mixture supplied byfthe carburetor may be improved, particularly during periods when relatively low suction is applied to the main nozzle, by constructing this nozzle with a main discharge outlet discharging either across or in the general direction of air flow, as in anf'eflcient" type nozzle, as described above, and a substantially I directly above the main. outlet and facing against the] air flow. 'During smaller orifice located periods of low suction, the air sweeps through the tip of the nozzle in a line from the small upper holeto outlet producing a kind the tip of the nozzle itself and, in general, facili tating the duel flow at such times.
  • Fig. 1 is a vertical sectional view showing an internal combustion engine carburetor embodying the invention.
  • Fig. 2 shows a portion of the structure in Fig. 1 substantially enlarged and Fig. 3 isa-n end view of the main nozzle.
  • the carburetor illustrated includes a downdraft mixture conduit having air inlet horn l with pivoted choke valve 2, venturis 3, mixing chamber 4, and flanged outlet portion 5 in which is mounted a pivoted throttle valve 6. Adjacent the mixture conduit is a bowl 1 within which fuel is maintained at a substantially constant level X-X by 'fioat 8 and needle valve mechanism 9 .within apertured boss in having a connection I! with aremote fuel tank.
  • Fuel is supplied to the mixture conduit throiigh a calibrated Jet i2 and-main nozzle it which discharges within the throat portion of the smallest venturl l.
  • Idling fuel is supplied through passages and i5 communicating with the main nozzle-and terminating in idling port It adjacent the edge of the throttle valve, operating with jet I2 is a stepped metering rod I! connected to the throttle valve by pivoted crank 20, link 2
  • hole 24 and orifice 23 may .be varied.
  • the mixture quality may be substantially varied merely by variation of the size and the position of upper hole 24.
  • Orifice 23 may face directly in line with the direction of fiow or it may face across the same.
  • the size and positioning of this orifice also are adjustable factors which may be utilized in calibrating the carburetor.
  • an induction conduit provided with a venturi, a constant level chamber, and a fuel nozzl extending upwardly at an angle from said chamber into said conduit and having a tip portion in said venturi, said portion having a fuel discharge orifice and an air inlet orifice, said air inlet orifice facing against the direction of air fiow in said venturi and said discharge orifice facing substantially transversely of said venturi, said orifices being horizontally offset and slightly above the normal fuel surface in said nozzle whereby air entering said inlet orifice may flow acrosssaid surface.
  • an induction conduit having a venturi, a constant level chamber, and a fuel nozzle extending upwardly at an angle into said venturi and having a tip portion with an air inlet orifice facing directly against the direction of air flow in said conduit and a discharge orifice facing transversely of said venturi, said orifices being located slightly above the normal fuel level in said nozzle and said air inlet orifice being above said discharge orifice and anterior thereto with respect to the fuel flow in said nozzle whereby air passes through said orifices in a gently curving stream.
  • an induction conduit having a venturi, and a fuel nozzle extending upwardly at anangle into said conduit and having a tip portion with a discharge orifice facing transversely of said venturi, said tip portion also having an air inlet orifice slightly anterior to and spaced horizontally of said discharge orifice and facing toward the inlet end of said conduit, said orifice being disposed relative to the normal fuel surface in said inlet during operation whereby air fiows therethrough in a smoothly curved streamline above and across said fuel surface.
  • an induction conduit having a venturi, a. constant level fuel chamber, and a fuel nozzle extending upwardly at an angle into said venturi and having a tip portion with an air inlet orifice facing directly against the direction of air flow in said conduit and a discharge orifice facing across said venturi, said outlet orifice being located slightly above the normal fuel level in said nozzle and said air inlet orifice being adjacent said discharge orifice and spaced transversely thereof whereby air may pass through said orifices and in contact with the fuel in said nozzle during operation.

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)
US248443A 1938-12-30 1938-12-30 Carburetor nozzle Expired - Lifetime US2255296A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR961987D FR961987A (it) 1938-12-30
BE480774D BE480774A (it) 1938-12-30
US248443A US2255296A (en) 1938-12-30 1938-12-30 Carburetor nozzle
GB5518/48A GB649920A (en) 1938-12-30 1948-02-24 Improvements in and relating to spray carburettors for internal combustion engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US248443A US2255296A (en) 1938-12-30 1938-12-30 Carburetor nozzle

Publications (1)

Publication Number Publication Date
US2255296A true US2255296A (en) 1941-09-09

Family

ID=22939153

Family Applications (1)

Application Number Title Priority Date Filing Date
US248443A Expired - Lifetime US2255296A (en) 1938-12-30 1938-12-30 Carburetor nozzle

Country Status (4)

Country Link
US (1) US2255296A (it)
BE (1) BE480774A (it)
FR (1) FR961987A (it)
GB (1) GB649920A (it)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2512085A (en) * 1947-01-27 1950-06-20 Carter Carburetor Corp Carburetor nozzle
US2628826A (en) * 1948-07-08 1953-02-17 Carter Carburetor Corp Antisurge carburetor
US2635625A (en) * 1948-08-04 1953-04-21 Carter Carburetor Corp Fuel supply device
US2768819A (en) * 1951-02-19 1956-10-30 Jr Albert G Bodine Engine fuel system
US2772866A (en) * 1953-03-17 1956-12-04 Ridley John Cecil Means for supplying anti-detonant to an internal-combustion engine
US2836160A (en) * 1955-02-28 1958-05-27 Akers Cecil Lynn Carbureting means
US3012676A (en) * 1958-12-03 1961-12-12 Julius L Englesberg Liquid purifier
US3738336A (en) * 1971-04-19 1973-06-12 N Holland Method and arrangement for controlling fuel delivery in a charge forming apparatus
US5904130A (en) * 1997-05-06 1999-05-18 Pacer Industries, Inc. Gaseous fuel injection system
US10830183B2 (en) 2018-12-05 2020-11-10 William R. Krup Individual cylinder tuning booster for a carburetor
US11131274B1 (en) 2018-12-05 2021-09-28 William R. Krup Individual cylinder tuning booster for a carburetor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2247866C (en) * 1996-04-02 2005-03-29 Briggs & Stratton Corporation Carburetor with fuel nozzle

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2512085A (en) * 1947-01-27 1950-06-20 Carter Carburetor Corp Carburetor nozzle
US2628826A (en) * 1948-07-08 1953-02-17 Carter Carburetor Corp Antisurge carburetor
US2635625A (en) * 1948-08-04 1953-04-21 Carter Carburetor Corp Fuel supply device
US2768819A (en) * 1951-02-19 1956-10-30 Jr Albert G Bodine Engine fuel system
US2772866A (en) * 1953-03-17 1956-12-04 Ridley John Cecil Means for supplying anti-detonant to an internal-combustion engine
US2836160A (en) * 1955-02-28 1958-05-27 Akers Cecil Lynn Carbureting means
US3012676A (en) * 1958-12-03 1961-12-12 Julius L Englesberg Liquid purifier
US3738336A (en) * 1971-04-19 1973-06-12 N Holland Method and arrangement for controlling fuel delivery in a charge forming apparatus
US5904130A (en) * 1997-05-06 1999-05-18 Pacer Industries, Inc. Gaseous fuel injection system
US10830183B2 (en) 2018-12-05 2020-11-10 William R. Krup Individual cylinder tuning booster for a carburetor
US11131274B1 (en) 2018-12-05 2021-09-28 William R. Krup Individual cylinder tuning booster for a carburetor

Also Published As

Publication number Publication date
FR961987A (it) 1950-05-26
GB649920A (en) 1951-02-07
BE480774A (it)

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