US3698413A - Fluidic fluid metering system - Google Patents

Fluidic fluid metering system Download PDF

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Publication number
US3698413A
US3698413A US3698413DA US3698413A US 3698413 A US3698413 A US 3698413A US 3698413D A US3698413D A US 3698413DA US 3698413 A US3698413 A US 3698413A
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US
United States
Prior art keywords
fluid
fluidic
excess
operative
flow
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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
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English (en)
Inventor
Janusz S Sulich
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Bendix Corp
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Bendix Corp
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Publication date
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Publication of US3698413A publication Critical patent/US3698413A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • 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]
    • Y10T137/2273—Device including linearly-aligned power stream emitter and power stream collector

Definitions

  • the present invention relates to the art of fluid handling and metering systems and particularly those systems which control the flow of fuel for mixture with air prior to combustion in an engine. More specifically, thepresent invention relates to fuel systems which incorporate one or more fluid amplifier elements to control the fuel delivery.
  • vehicle accelerations could causefuel in the return-line to flow away from the fluid logic o computing means at a higher flow rate than normal thereby causing a low pressure zone to form adjacent the power stream which would be operative to divert a larger portion of the power stream intothe return-line systems that provide accurate fuel/air ratios in tests simulating all engine operating requirements suddenly become highly inaccurate mis-approximations when these identical systems are installed in vehicles wherein the system is subjected to varying return fuel pressure due to attitudes or dynamic motions of the vehicle.
  • the main, or primary fluidic stage comprises a nozzle for discharging pressurized fluid into a fluid interaction region where control signals, disposed laterally of the fluid stream, deflect the stream towards one of a pair of outlets.
  • the fluid is fuel
  • one outlet port is in communication with a-fuel discharge nozzle while the other outlet permits fuel entering thereinto to return to the fuel tank.
  • fluid logic fuel systems at least as applied in vehicular installations, require some means for maintaining the pressure in the return passage system, and particularly at the return line system inlet port, at a level which is not readily affected by acceleration (and deceleration) of. the vehicle or by changes in the attitude of the vehicle. It is a primary objective of this invention to provide a means for maintaining the pressure within a fuel system return line system at a value which is unaffected by, and is capable of substantially ignoring, inertial effects on the fuel caused by changes in the attitude or speed of the associated vehicle. It is a further object of the present invention to provide such a means which is low in cost, reliable in operation and which is fully compatible with fluidic systems.
  • the presentinvention comprises the addition to the fluid return system of a jet pump operative to'cause the fluid return passages and fluid vents or clumps of the associated fluidic amplifier computing system to be exposed to a low or suction pressure and further operative to cause the fluid in the return-line system downstream of the jet pump to be energized sufficiently to overcome the inertial force and attitude changes referred to hereinabove.
  • the jet pump is energized by a by-pass fluid flow from the pressurized side of the fluid system pump and, by entrainment, is operative to aspirate excess fluid from the fluidic computing means and to cause it to enter the fluid return at a somewhat elevated pressure level thereby isolating the fluidic control portion of the system.
  • FIG. 1 shows a schematic drawing of a representative fuel supply system incorporating the preferred embodiment of the present invention.
  • FIG. 2 shows a sectional view of a jet pump suitable for use in a system as shown in FIG. 1.
  • the computing and metering means 16 are illustrated as being comprised of a computation means illustrated as fluidic amplifier 10, a fuel nozzle 26, and an air intake 28 having air flow sensing means in the form of venturi 30.
  • the air flow sensing means 30 are connected to a control port 32 of the fluidic element and are operative to proportion the fuel flow through outlet passages 34 and 36 of the amplifier 10 in accord with the engine fuel requirements.
  • passage 31 communicates control port 33 to the intake mainfold 28 upstream of the venturi 30. This is merely illustrative of a system having a single control input.
  • Outlet passage 36 is connected to nozzle 26 to provide metered fuel to the air intake 28 for ultimate supply to an engine, not shown.
  • the fluidic amplifier 10 is also illustrated as having a pair of vents 38 and 40 which are connected via passage system 42 to the outlet passage 34.
  • the particular computation means shown is intended to'be merely illustrative of fluidic computation means utilizing at least one fluidic amplifier and having at least one control input signal.
  • the type of fluidic element shown is intended to be illustrative rather than definitive of a fluidic amplifier having utility for controlling fluid flow in the illustrated embodiment.
  • the jet pump used in the present invention as the isolating means 18 is illustrated.
  • the jet pump is comprised of a body 50 having a fluid receiving chamber 52 located therein.
  • the chamber 52 communicates via ports 54 with the excess fluid passage system 42.
  • a nozzle 56 is centrally located to expel a jet of pressurized fluid into the chamber 52 while aperture or port 58 is arranged to receive the jet of fluid and to exhaust it from the chamber.
  • Nozzle 56 is in communication via passage 20 with a source of pressurized fluid which, in this instance, is the output or high pressure side of fuel pump 12 and aperture 58 is in communication via conduit or passage 24 with a fluid dump or reservoir
  • the fluid reservoir is the fuel tank 14 but the man skilled in the art will recognize that other operating fluids and hence other reservoirs and sourcesmay be utilized in the practice and application of my invention.
  • a system which uses air as the operation fluid would be supplied from a compressed air source or air motor while using the atmosphere as a fluid dump and systems using water would look to the water pump for a source and could then use the fluid supply as the fluid dump.
  • the pressure within chamber 52 will be reduced whereby fluid in the excess fluid conduit system 42 will be drawn into chamber 52 through the various ports 54 provided for that purpose. As this excess fluid enters the chamber 52 it also is entrained and flows with the supply fluid into the aperture 58 to be returned to the fluid dump. In this manner, the isolating means 18 in the form of the jet pump will effectively aspirate the excess fluid passages and the fluid vents of the fluidic flow control portion of the system. Any fluid entering the aspirated regions will be immediately drawn into the jet pump and forced into the return line 24 at an elevated pressure.
  • the fluidic devices will be exposed to a substantially uniform suction in the excess fluid portions of the system permitting the system designer to ignore the consequences of vehicular motion in designing a system for an automobile.
  • the fluid within the return system downstream of the isolating means 18 will be at an elevated pressure or energy level such that the inertial forces on the return line fluid will be effectively masked and will not be apparent upstream of the isolating means 18.
  • a fluidic system having a fluid source, a fluid pressurizing means, means for producing a fluid flow in excess of the flow required to control a further utilization means and return passage means to return excess fluid to the fluid source
  • the improvement comprising active isolating means interposed in said return passage means downstream of said fluidic excess flow means wherein said active isolating means are operative to isolate the fluidic excess flow means from back pressure effects caused by fluid in the return passage means, said active isolating means comprising fluid receiving means communicating with said excess fluid flow means and operative to receive fluid therefrom and energized means associated with said fluid receiving means operative to elevate the energy level of the received fluid whereby said received fluid is not influenced by inertial forces.
  • said means to elevate the energy level of the received fluid comprise pump means operative to accelerate the received fluid into the return passage means downstream of the fluid receiving means.
  • a fluidic system having a fluid source, means communicating with the source for producing a fluid flow in excess of the fluid flow required to control a utilization means and return passage means communicating with the source to return excess fluid to the source, the improvement comprising energized isolating means interposed in said return passage means downstream of said fluidic excess fluid flow means wherein said isolating means are operative to isolate the fluidic excess fluid flow means from back pressure effects caused by fluid in the return passage means, said energized isolating means comprising fluid receiving means communicating with said excess fluid flow means operative to receive fluid therefrom, and suction means coupled to said fluid receiving means operative to draw fluid from the'fluidic excess fluid flow means into said fluid receiving means.
  • suction means and said fluid receiving means are situated in proximity to the fluidic excess fluid flow means such that the fluid flow distance between the energized isolating means and the fluidic excess fluid flow means is very small compared to the fluid flow distance between the energized isolating means and the fluid source.
  • suction means comprise a jet pump operative to aspirate said receiving means whereby a low pressure region is formed therein.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Jet Pumps And Other Pumps (AREA)
US3698413D 1969-09-15 1969-09-15 Fluidic fluid metering system Expired - Lifetime US3698413A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US85802169A 1969-09-15 1969-09-15

Publications (1)

Publication Number Publication Date
US3698413A true US3698413A (en) 1972-10-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
US3698413D Expired - Lifetime US3698413A (en) 1969-09-15 1969-09-15 Fluidic fluid metering system

Country Status (5)

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US (1) US3698413A (de)
DE (1) DE2045579B2 (de)
FR (1) FR2061415A5 (de)
GB (1) GB1304427A (de)
SE (1) SE359891B (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3830096A (en) * 1972-07-18 1974-08-20 Meidensha Electric Mfg Co Ltd A load insensitive type fluid restrictor
US3889711A (en) * 1972-04-01 1975-06-17 Meidensha Electric Mfg Co Ltd Low pressure operable, diaphragm type logical element
US20110168132A1 (en) * 2010-05-28 2011-07-14 Ford Global Technologies, Llc Approach for controlling fuel flow with alternative fuels
RU2638285C1 (ru) * 2016-08-19 2017-12-12 федеральное государственное автономное образовательное учреждение высшего образования "Казанский (Приволжский) федеральный университет" (ФГАОУ ВО КФУ) Способ оценки эффективности воздействия химиотерапевтических препаратов ксенотрансплантатной модели in vivo

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6268129A (ja) * 1985-09-18 1987-03-28 Nissan Motor Co Ltd 燃料タンクの燃料吸込装置

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3428065A (en) * 1965-02-16 1969-02-18 Corning Glass Works Feedback isolator
US3429324A (en) * 1965-02-16 1969-02-25 Corning Glass Works Fluid operated apparatus
US3438384A (en) * 1960-07-15 1969-04-15 Hyman Hurvitz Electro-fluid systems
US3469593A (en) * 1966-06-01 1969-09-30 Pitney Bowes Inc Fluidic device
US3477699A (en) * 1965-09-16 1969-11-11 Gen Motors Corp Metering means
US3556488A (en) * 1968-07-10 1971-01-19 Aisan Kogyo Co Ltd Carburetor with fluid elements
US3565091A (en) * 1969-01-24 1971-02-23 Raymond N Auger Fluid pump and regulator
US3564844A (en) * 1968-07-18 1971-02-23 Dowty Fuel Syst Ltd Pressure ratio control system for a gas turbine engine
US3576291A (en) * 1969-08-29 1971-04-27 Bendix Corp Vortex analog to digital converter having time modulated output
US3592209A (en) * 1969-05-26 1971-07-13 Lucas Industries Ltd Fluidic control circuits

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3438384A (en) * 1960-07-15 1969-04-15 Hyman Hurvitz Electro-fluid systems
US3428065A (en) * 1965-02-16 1969-02-18 Corning Glass Works Feedback isolator
US3429324A (en) * 1965-02-16 1969-02-25 Corning Glass Works Fluid operated apparatus
US3477699A (en) * 1965-09-16 1969-11-11 Gen Motors Corp Metering means
US3469593A (en) * 1966-06-01 1969-09-30 Pitney Bowes Inc Fluidic device
US3556488A (en) * 1968-07-10 1971-01-19 Aisan Kogyo Co Ltd Carburetor with fluid elements
US3564844A (en) * 1968-07-18 1971-02-23 Dowty Fuel Syst Ltd Pressure ratio control system for a gas turbine engine
US3565091A (en) * 1969-01-24 1971-02-23 Raymond N Auger Fluid pump and regulator
US3592209A (en) * 1969-05-26 1971-07-13 Lucas Industries Ltd Fluidic control circuits
US3576291A (en) * 1969-08-29 1971-04-27 Bendix Corp Vortex analog to digital converter having time modulated output

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3889711A (en) * 1972-04-01 1975-06-17 Meidensha Electric Mfg Co Ltd Low pressure operable, diaphragm type logical element
US3830096A (en) * 1972-07-18 1974-08-20 Meidensha Electric Mfg Co Ltd A load insensitive type fluid restrictor
US20110168132A1 (en) * 2010-05-28 2011-07-14 Ford Global Technologies, Llc Approach for controlling fuel flow with alternative fuels
US9441597B2 (en) * 2010-05-28 2016-09-13 Ford Global Technologies, Llc Approach for controlling fuel flow with alternative fuels
RU2638285C1 (ru) * 2016-08-19 2017-12-12 федеральное государственное автономное образовательное учреждение высшего образования "Казанский (Приволжский) федеральный университет" (ФГАОУ ВО КФУ) Способ оценки эффективности воздействия химиотерапевтических препаратов ксенотрансплантатной модели in vivo

Also Published As

Publication number Publication date
FR2061415A5 (de) 1971-06-18
DE2045579A1 (de) 1971-04-15
GB1304427A (de) 1973-01-24
SE359891B (de) 1973-09-10
DE2045579C3 (de) 1973-11-29
DE2045579B2 (de) 1973-05-17

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