US3599941A - Fluidic-fuel-metering system - Google Patents

Fluidic-fuel-metering system

Info

Publication number
US3599941A
US3599941A US3599941DA US3599941A US 3599941 A US3599941 A US 3599941A US 3599941D A US3599941D A US 3599941DA US 3599941 A US3599941 A US 3599941A
Authority
US
United States
Prior art keywords
air
fuel
carburetor
airflow
vortex chamber
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
Inventor
Bruce H Becker
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.)
Navistar International Corp
Original Assignee
International Harverster 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 International Harverster Corp filed Critical International Harverster Corp
Application granted granted Critical
Publication of US3599941A publication Critical patent/US3599941A/en
Assigned to NAVISTAR INTERNATIONAL CORPORATION reassignment NAVISTAR INTERNATIONAL CORPORATION CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: INTERNATIONAL HARVESTER COMPANY
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • F02M7/106—Fluid amplifier as a device for influencing the fuel-air mixture
    • 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
    • Y10S261/69—Fluid amplifiers in carburetors
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/206—Flow affected by fluid contact, energy field or coanda effect [e.g., pure fluid device or system]
    • Y10T137/2076—Utilizing diverse fluids
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/206—Flow affected by fluid contact, energy field or coanda effect [e.g., pure fluid device or system]
    • Y10T137/2087—Means to cause rotational flow of fluid [e.g., vortex generator]
    • Y10T137/2098—Vortex generator as control for system

Abstract

A novel carburetor arrangement for metering fuel to form a fuelair mixture for delivery to a spark ignition engine which provides a single fuel-metering system for all engine operating conditions including idling as well as full load conditions. The preferred system features a unique combination of a fluid amplifier with a vortex amplifier for metering liquid fuel and discharging same into the airflow thereby converting an airstream into a uniform fuel-air mixture of substantially constant ratio of fuel-to-air for delivery to the engine.

Claims (9)

1. A carburetor for an internal combustion engine comprising: a. an airflow means having a venturi disposed therein capable of generating a first signal pressure region and a second signal pressure region adjacent said venturi in air flowing therethrough, b. a throttle valve disposed in said airflow means for selectively controlling the rate of air flowing therethrough, c. a vortex device having a cylindrically shaped vortex chamber positioned to divert at least a portion of the air-flowing in said airflow means through said chamber in bypass relation, d. means for urging the air in said vortex chamber into a rotatory movement in one direction, e. fuel discharge means for discharging fuel into said vortex chamber positioned to retard the rate of rotatory movement of said air therein, f. a proportional fluid amplifier controlled by the integrated pressure values in said first and second signal pressure regions with reference to atmospheric pressure values positioned to deliver and regulate the flow of fuel into said fuel discharge means whereby an enriched fuel-air mixture is formed in said vortex chamber which mixture is discharged downstream into the remaining portion of said airflow in said airflow means thereby forming a uniform fuel-air mixture having a predetermined ratio of fuel-toair for delivery to said engine.
2. A carburetor for an internal combustion engine according to claim 1 wherein the vortex device includes a shroud extending into said vortex chamber positioned to conduct therethrOugh a portion of the air flowing is said airflow means in bypass relation with respect to the air in rotatory movement in said vortex chamber.
3. A carburetor for an internal combustion engine according to claim 1 wherein the means for urging the air in said vortex chamber into rotatory movement comprises at least one air discharge nozzle communicatively connected through a passage to said airflow means, said nozzle being positioned to discharge a minor flow of air from said airflow means to impart a tangential force to the air in said vortex chamber thereby imparting a rotatory movement in a vortex pattern to the air in said vortex chamber in said one direction.
4. A carburetor for an internal combustion engine according to claim 3 wherein said airflow means includes an airscoop communicatively connected to said air discharge nozzle whereby the pressure of air discharging from said nozzle is increased thereby increasing the rate of rotatory motion of the air in said vortex chamber.
5. A carburetor for an internal combustion engine according to claim 3 wherein said passage connected to said air discharge nozzle is positioned to communicate with said airflow means upstream of said throttle valve.
6. A carburetor for an internal combustion engine according to claim 1 wherein said fuel discharge means includes at least one fuel discharge orifice communicatively connected through a conduit to a first fuel outlet of said proportional fluid amplifier, said orifice being positioned to discharge fuel into said vortex chamber from said amplifier to impart a tangential force to the air in said vortex chamber in the opposite direction for retarding the rotatory movement of the air in said chamber thereby valving the rate of enriched fuel-air mixture discharged from said chamber into said remaining portion of said airflow in said airflow means.
7. A carburetor for an internal combustion engine according to claim 6 wherein said fuel discharge means comprises two fuel discharge orifices positioned in 180* relation with respect to each other.
8. A carburetor for an internal combustion engine according to claim 1 wherein said vortex device is positioned upstream of said venturi.
9. A carburetor for an internal combustion engine according to claim 1 wherein said vortex device is positioned downstream of said throttle valve.
US3599941D 1969-10-30 1969-10-30 Fluidic-fuel-metering system Expired - Lifetime US3599941A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US87262369A 1969-10-30 1969-10-30

Publications (1)

Publication Number Publication Date
US3599941A true US3599941A (en) 1971-08-17

Family

ID=25359983

Family Applications (1)

Application Number Title Priority Date Filing Date
US3599941D Expired - Lifetime US3599941A (en) 1969-10-30 1969-10-30 Fluidic-fuel-metering system

Country Status (1)

Country Link
US (1) US3599941A (en)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1302347A (en) * 1919-04-29 L V Flechter & Company Carbureter.
US1731135A (en) * 1925-06-09 1929-10-08 Hutchison Hugh Carburetor
US1756805A (en) * 1928-12-08 1930-04-29 Walter J Baker Rotary vaporizing carburetor
US1791130A (en) * 1925-08-15 1931-02-03 Paramount Carburetor Corp Fuel-feeding system
US2655356A (en) * 1949-12-02 1953-10-13 Herman F Borcherts Carburetor for internalcombustion engines
US2714503A (en) * 1953-01-14 1955-08-02 Harry F Heisler Carburetor jet
US3386710A (en) * 1965-09-16 1968-06-04 Gen Motors Corp Fuel system
US3386709A (en) * 1965-09-16 1968-06-04 Gen Motors Corp Fuel system and method of operation
US3389894A (en) * 1965-10-11 1968-06-25 Alan M Binder Fuel induction device
US3474670A (en) * 1965-06-28 1969-10-28 Honeywell Inc Pure fluid control apparatus

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1302347A (en) * 1919-04-29 L V Flechter & Company Carbureter.
US1731135A (en) * 1925-06-09 1929-10-08 Hutchison Hugh Carburetor
US1791130A (en) * 1925-08-15 1931-02-03 Paramount Carburetor Corp Fuel-feeding system
US1756805A (en) * 1928-12-08 1930-04-29 Walter J Baker Rotary vaporizing carburetor
US2655356A (en) * 1949-12-02 1953-10-13 Herman F Borcherts Carburetor for internalcombustion engines
US2714503A (en) * 1953-01-14 1955-08-02 Harry F Heisler Carburetor jet
US3474670A (en) * 1965-06-28 1969-10-28 Honeywell Inc Pure fluid control apparatus
US3386710A (en) * 1965-09-16 1968-06-04 Gen Motors Corp Fuel system
US3386709A (en) * 1965-09-16 1968-06-04 Gen Motors Corp Fuel system and method of operation
US3389894A (en) * 1965-10-11 1968-06-25 Alan M Binder Fuel induction device

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Legal Events

Date Code Title Description
AS Assignment

Owner name: NAVISTAR INTERNATIONAL CORPORATION, ILLINOIS

Free format text: CHANGE OF NAME;ASSIGNOR:INTERNATIONAL HARVESTER COMPANY;REEL/FRAME:004546/0650

Effective date: 19860220

Owner name: NAVISTAR INTERNATIONAL CORPORATION

Free format text: CHANGE OF NAME;ASSIGNOR:INTERNATIONAL HARVESTER COMPANY;REEL/FRAME:004546/0650

Effective date: 19860220