US3841613A - Fuel metering device for internal combustion engines - Google Patents

Fuel metering device for internal combustion engines Download PDF

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Publication number
US3841613A
US3841613A US00366099A US36609973A US3841613A US 3841613 A US3841613 A US 3841613A US 00366099 A US00366099 A US 00366099A US 36609973 A US36609973 A US 36609973A US 3841613 A US3841613 A US 3841613A
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US
United States
Prior art keywords
fuel
improvement
vessels
flushing tank
valve means
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
US00366099A
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English (en)
Inventor
K Eckert
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Application granted granted Critical
Publication of US3841613A publication Critical patent/US3841613A/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
    • 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
    • F02M17/02—Floatless carburettors
    • F02M17/06—Floatless carburettors having overflow chamber determining constant fuel level
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
    • 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
    • Y10S261/74—Valve actuation; electrical
    • 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
    • Y10S261/82—Upper end injectors

Definitions

  • a fuel metering device for an internal combustion engine wherein the fuel feed pressure of the device is determined by the static height of the fuel in a vessel from which a fuel line leads to a suction tube, is improved by providing therein at least two vessels of different filling level, means for feeding fuel into each of the vessels, valve means for connecting the vessels a1 ternatingly or simultaneously with the fuel line, and control means for actuating the valve means in dependence 0n characteristic data of the engine.
  • This invention relates to a fuel metering device for internal combustion engines in which the fuel feed pressure is determined by a constant static height of the fuel in a vessel from which a fuel line leads to a suction pipe.
  • the purpose of such fuel metering device is to provide in an Otto engine, automatically and under all operational conditions, a favorable fuel/air mixture ratio, in order to burn the fuel as completely as possible and thereby to avoid or notably reduce the production of toxic exhaust gases while maintaining an optional, performance of the internal combustion engine at the smallest possible consumption of fuel.
  • At least two vessels of different filling height are provided which can be supplied with fuel and which are connectable alternatingly or simultaneously with a fuel supply line by means of a valve operated in dependence on the characteristic engine data, and wherein this valve operates preferably together with electric means, and the controlled switchings take place in a cycle.
  • this valve operates preferably together with electric means, and the controlled switchings take place in a cycle.
  • FIG. 1 represents schematically a sectional view of a first embodiment of the fuel metering device according to the invention
  • FIG. 2 shows a fuel feed pumpand flushing tank arrangem ent different from that employed in the embodiment shown in FIG. 1;
  • FIG. 3 shows yet another fuel feed pumpand flushing tank arrangement
  • FIG. 4 shows a simplified fuel feed pipe arrangement employed in lieu of the fuel pumpand flushing arrangement shown in the preceding figures.
  • FIG. 5 shows another embodiment of the fuel metering device according to the invention, all of FIGS. 2 to 5 being highly schematical sectional views.
  • fuel line 15 may also be connected by means of a bridging line 17 (shown by a dashed line) to the branch of fuel line 9 extending from reservoir 8 to the suction side of pump 7.
  • a bridging line 17 shown by a dashed line
  • the vessels 2 and 3 are always maintained full in a simple manner, and any fuel fed into them in excess will overflow and leave chamber 10 to be reintroduced into the fuel cycle.
  • the vessels 2 and 3 are connected by way of ducts 19 and 20 with chambers 21 and 22 of asolenoid valve 28 which in turn connects the chambers 21 and 22 alternatingly or simultaneouslywith a chamber 23, which latter is linked by way of a line 24 to a nozzle 26 arranged in a suction tube 25.
  • An exciter coil 27 constitutes the electrically energizable member of the solenoid valve 28 and is energized by a control unit (not shown) which is adapted for processing engine data.
  • a control unit not shown
  • FIG. 4 represents a highly simplified modification of the arrangement shown in FIG. 1.
  • the fuel is conveyed from the reservoir 8 by means of a pump 7 and via a feed line 9 to the housing 1, and the fuel accumulating in the chamber 10 is recycled by means of a pump 33 via a line 11 into the fuel reservoir 8.
  • the differential filling height is not obtained by overflowing vessels, but rather by means of flushing tanks 35 and 36, whose floats 37 and 38 actuate the valves 39 and 40, which in turn control the flow of fuel into the tanks.
  • the fuel is conveyed by means of a pump 41, which aspirates fuel from the reservoir 8, and which conveys the fuel through a line 42 to the valves 39 and 40.
  • a pump 41 which aspirates fuel from the reservoir 8
  • a line 42 to the valves 39 and 40.
  • suction tube not shown
  • a fuel metering device for an internal combustion engine wherein the fuel feed pressure of the device is determined by the static height of the fuel in a vessel from which a fuel line leads to a suction tube, the improvement comprising at least two vessels of different filling level, means for feeding fuel into each of said vessels, valve means for connecting said vessels alternatingly or simultaneously with said fuel line, and control means for actuating said valve means in depeneach of said vessels in order to maintain differential static heights of fuel in said vessels and comprising means for recycling overflowing fuel.
  • said means for feeding fuel into said vessels comprise pump means, a flushing tank fed by said pump means, said valve means controlling the flow of fuel to and from said flushing tank.
  • valve means comprise float means in said flushing tank.
  • said means for recycling overflowing fuel comprise pump means, a flushing tank fed by said pump means, said valve means controlling the flow of fuel to and from said flushing tank.
  • valve means comprise float valve means in said flushing tank.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Control Of The Air-Fuel Ratio Of Carburetors (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
US00366099A 1972-07-18 1973-06-01 Fuel metering device for internal combustion engines Expired - Lifetime US3841613A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2235146A DE2235146C2 (de) 1972-07-18 1972-07-18 Kraftstoffzumeßanlage

Publications (1)

Publication Number Publication Date
US3841613A true US3841613A (en) 1974-10-15

Family

ID=5850912

Family Applications (1)

Application Number Title Priority Date Filing Date
US00366099A Expired - Lifetime US3841613A (en) 1972-07-18 1973-06-01 Fuel metering device for internal combustion engines

Country Status (6)

Country Link
US (1) US3841613A (ja)
JP (1) JPS5627700B2 (ja)
DE (1) DE2235146C2 (ja)
FR (1) FR2163258A5 (ja)
GB (1) GB1420466A (ja)
IT (1) IT991226B (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4034730A (en) * 1975-09-15 1977-07-12 General Motors Corporation Closed loop carburetor air-fuel ratio control apparatus
US4230082A (en) * 1979-04-23 1980-10-28 Jurschewitz Paul A W System for regulating the fuel supply of an internal combustion engine
US4567871A (en) * 1983-09-28 1986-02-04 Ford Motor Company Fuel distribution and metering

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60195178A (ja) * 1984-03-16 1985-10-03 Yoshinari Masuyama 凍結防止及び防塵剤
JPS60202182A (ja) * 1984-03-24 1985-10-12 Matsushita Electric Works Ltd 雨樋
JPS60233202A (ja) * 1984-05-04 1985-11-19 日本鋪道株式会社 アスフアルト舗装体の加熱処理方法
JPS6128576A (ja) * 1984-07-19 1986-02-08 Daido Kk 融雪及び凍結防止剤
JPS6153382A (ja) * 1984-08-23 1986-03-17 Kunnetsupu Sekkai Kogyo Kk 粒状融雪剤の製造方法
FR2571435A1 (fr) * 1984-10-05 1986-04-11 Monnet Francois Carburateur pour moteur a combustion comportant un moyen de debordement qui determine un niveau constant du carburant dans les circuits d'utilisation
JPS61108686A (ja) * 1984-10-31 1986-05-27 Daido Kk 融雪剤
JPS63314292A (ja) * 1987-06-17 1988-12-22 Sansei Kagaku Kk 融雪剤

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1333149A (en) * 1914-04-25 1920-03-09 Stromberg Motor Devices Co Carbureting apparatus
US1616726A (en) * 1925-02-27 1927-02-08 George N Wilcox Carburetor
US1746302A (en) * 1924-10-31 1930-02-11 Wilhelm B Bronander Carburetor
GB383256A (en) * 1930-02-04 1932-11-10 Zenith Carburateurs Soc Gen Improvements to fuel feeding devices for internal combustion engines
US2254850A (en) * 1939-12-30 1941-09-02 Mallory Marion Carburetor
US2759717A (en) * 1949-05-09 1956-08-21 Daimler Benz Ag Valve control mechanism
US3066922A (en) * 1957-09-07 1962-12-04 Wucherer Heinrich Klans Carburetors
FR1337284A (fr) * 1962-06-16 1963-09-13 Perfectionnements aux carburateurs pour moteurs à combustion interne
US3171467A (en) * 1962-07-03 1965-03-02 Robert R Featherston Carburetor control
US3252498A (en) * 1959-07-28 1966-05-24 Chrysler Corp Return flow carburetor
US3275307A (en) * 1963-08-02 1966-09-27 Mcculloch Corp Charge forming device
US3685502A (en) * 1971-03-04 1972-08-22 Sun Oil Co Motor vehicle emission control system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1576626A1 (de) * 1967-04-04 1970-02-12 Teldix Gmbh Kraftstoff-Einspritzvorrichtung fuer Viertakt-Brennkraftmaschinen
FR1555884A (ja) * 1967-12-22 1969-01-31
FR1564713A (ja) * 1968-02-22 1969-04-25
DE2057770C3 (de) * 1970-11-24 1974-05-16 Mikuni Kogyo Co., Ltd., Tokio Überlaufvergaser für Brennkraftmaschinen

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1333149A (en) * 1914-04-25 1920-03-09 Stromberg Motor Devices Co Carbureting apparatus
US1746302A (en) * 1924-10-31 1930-02-11 Wilhelm B Bronander Carburetor
US1616726A (en) * 1925-02-27 1927-02-08 George N Wilcox Carburetor
GB383256A (en) * 1930-02-04 1932-11-10 Zenith Carburateurs Soc Gen Improvements to fuel feeding devices for internal combustion engines
US2254850A (en) * 1939-12-30 1941-09-02 Mallory Marion Carburetor
US2759717A (en) * 1949-05-09 1956-08-21 Daimler Benz Ag Valve control mechanism
US3066922A (en) * 1957-09-07 1962-12-04 Wucherer Heinrich Klans Carburetors
US3252498A (en) * 1959-07-28 1966-05-24 Chrysler Corp Return flow carburetor
FR1337284A (fr) * 1962-06-16 1963-09-13 Perfectionnements aux carburateurs pour moteurs à combustion interne
US3171467A (en) * 1962-07-03 1965-03-02 Robert R Featherston Carburetor control
US3275307A (en) * 1963-08-02 1966-09-27 Mcculloch Corp Charge forming device
US3685502A (en) * 1971-03-04 1972-08-22 Sun Oil Co Motor vehicle emission control system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4034730A (en) * 1975-09-15 1977-07-12 General Motors Corporation Closed loop carburetor air-fuel ratio control apparatus
US4230082A (en) * 1979-04-23 1980-10-28 Jurschewitz Paul A W System for regulating the fuel supply of an internal combustion engine
US4567871A (en) * 1983-09-28 1986-02-04 Ford Motor Company Fuel distribution and metering

Also Published As

Publication number Publication date
DE2235146A1 (de) 1974-01-31
FR2163258A5 (ja) 1973-07-20
JPS4945227A (ja) 1974-04-30
DE2235146C2 (de) 1982-06-03
IT991226B (it) 1975-07-30
JPS5627700B2 (ja) 1981-06-26
GB1420466A (en) 1976-01-07

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