US1616335A - Fuel-injection device for internal-combustion engines - Google Patents

Fuel-injection device for internal-combustion engines Download PDF

Info

Publication number
US1616335A
US1616335A US757170A US75717024A US1616335A US 1616335 A US1616335 A US 1616335A US 757170 A US757170 A US 757170A US 75717024 A US75717024 A US 75717024A US 1616335 A US1616335 A US 1616335A
Authority
US
United States
Prior art keywords
fuel
piston
valve
injection device
bore
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
US757170A
Inventor
Rochefort Francois
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US1616335A publication Critical patent/US1616335A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F02M67/00—Apparatus in which fuel-injection is effected by means of high-pressure gas, the gas carrying the fuel into working cylinders of the engine, e.g. air-injection type
    • F02M67/10—Injectors peculiar thereto, e.g. valve less type
    • 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
    • F02M67/00—Apparatus in which fuel-injection is effected by means of high-pressure gas, the gas carrying the fuel into working cylinders of the engine, e.g. air-injection type
    • F02M67/10—Injectors peculiar thereto, e.g. valve less type
    • F02M67/12—Injectors peculiar thereto, e.g. valve less type having valves
    • 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
    • Y10T137/8593—Systems
    • Y10T137/87917—Flow path with serial valves and/or closures
    • Y10T137/88022—One valve head provides seat for other head
    • Y10T137/8803—Also carries head of other valve

Definitions

  • yMy present inventionl relates to fuel injection devices for internalicombustion engines, of. the type in which the pressure of the liquid itself is utilized for lifing from its seat the fuel injection valve or the like, which forms likewise the valve forthe compressed' air or vas serving for the diffusion of the liquid fuel, by the pressure of the liquid fuel acting upon a piston connected to the said Valve.
  • My invention more particularly relates to ⁇ and shownin my application for United States Letters Patent, filed April 30, 1923,
  • this passage of constant sectional area for the liquid fuel consists of an accurately gauged annular clearance space of small-.and conv stant cross sectional area rprovided between the cylindrical external surface of the piston and its cylindrical lodgment in the valvecasing.
  • Fig. 1 is a vertical axial section through the injection device
  • Fig. 2 a horizontal section on line 2-2 of Fig. 1.
  • a is the body of the injector, adapted to besecured by a screwthread to fthe cylinder head b of the engine.
  • the body a receives on one side the end c of the compressed air supply pipe, and, on the otherl
  • a valve body consisting of a. fiat-seated valve Z, fast,
  • this piston m located in a cylindrical bore c provided inthe valve easing e.
  • the external diameter of this piston m andthe internal diameter of the ybore k are such as to provide an acculrately gauged annular clearance between the the valve and, at the other end, upon a tubular plug '0, screwed 4in the member 1 and which serves at the same time as a stop for v' the valve-stem'Z1 for the purpose of limiting the lift of the valve Z.
  • Notches 01 provided in the lower end of the tubular plug o, allow the compressed air, admitted through c and an opening c1 in the valve casing e, always to exert its pressure upon the whole surfaceof the valve Z, so as to ensure, together with the spring n, rapid closing of'this valve.
  • Liquid fuel is supplied from oZ through the port. Z1 beneath Ythe piston m. Under the pressure of the fuel delivered by the injection pump (not shown), the, piston fm is lifted, raising with it the valve Z which is raised from its. flat seating e1; the liquid fuel is discharged through the very small but accurately calibrated clearance provided between the cylindrical piston m and bore,l 7c, and passes, in tlieform of a thin film, be'
  • bustion engines comprising a body, separate inlet passages in said body for fuel and gas supplied under pressure, a single Valve member arranged to control passage through the body of both fuel and gas under pressure by t its displacement relatively t'o the body, a vpiston connected 'to said valve member, a vcylindrical bore in the body for receiving the piston, the piston having an external diameterslightly less than the internal diameter of the bore in the body so as to provide an accurately gauged annular clearance space of small and constant cross sectional area between the cylindrical external surface of the piston andthe cylindrical bore in the body member, means establishing communication between said fuel inlet and said bore whereby said piston together with the valve member is moved relatively to said body through a pressure exerted on said piston by the fuel to thus allow passage of fuel and gas under pressure through the body, and means for moving the valve member with the associated piston in the opposite direction for cutting olf the flow of fuel and gas under pressure.
  • a fuel injection device for i'nternal combustion engines comprising a body, separate inlet' passages'in said body for fuel and gas supplied under pressure, a valve seat, a single valve" member closing on the seat and arranged to control passage'through the body of both fuel and gas under pressure by its displacement relatively to the body, a piston connected to said valve member, a V cylindrical bore in thebody for receiving the piston, the piston having an externaludiameter slightly less than the internal diameter ofthe bore in the body so as to provide an accurately gauged annular clearance space 49 of small and constant cross sectional area be tween the cylindrical external surface of the piston and the cylindrical bore in the body member, said body Abeing formed with an annular mixing chamber for the liquid-fuel and gas under pressure positioned in the -valve seat communicating with the engine cylinder, means establishing communication between said fuel inlet and said bore whereby said piston together with the valve mem- 50 ber is moved relatively to said body through pressure exerted on said piston by the fuel to thus allow passage of fuel and gas under pressure through thebody
  • valve member closing on the seat and ar ranged to control passage of both fuel and gas under pressure through the body by its ⁇ displacement relatively to the body, a piston 'connected to said valve membera cylindrical bore in the body for receiving the piston,
  • the piston having an external diameter slightly less than the internal diameter of the bore in the body soas to provide an accurately gauged annular clearance space between the cylindrical ⁇ external surface of the piston and the cylindrical bore in the body, means establishing 'communication between said fuel inlet and said bore whereby said piston together with the valve member is moved relatively to said body through pressure exertedon said piston by the 'fuel to thus allow passage of fuel and gas under pressure through the body, and means for moving the valve member with the associated piston in the opposite direction for cutting off the How of fuel and gas under pressure, and convergent-divergent body outlet nozzles arranged symmetrically of the axis ⁇ of the. valve member, opening into the'valve seat, and arranged to discharge directly into an engine cylinder.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Description

Feb. l 1927.
F. ROCHEFORT FUEL INJECTION DEVICE FOR4 INTERNAL GOMBUSTION ENGINES Filed Dec. 20. 1924 Patent Feb. 1, 1927.
' y. i; D
FItANQOIS ROCHIJIEOBJI, OF PARIS,.FRANCE.
runL-mne'rron DEVICE Fon INTEBNAL-COMBUSTION Encinas.
Application led December 20, 1924, SerialNo. 757,170, and inrFrance December 28, 1923.
yMy present inventionl relates to fuel injection devices for internalicombustion engines, of. the type in which the pressure of the liquid itself is utilized for lifing from its seat the fuel injection valve or the like, which forms likewise the valve forthe compressed' air or vas serving for the diffusion of the liquid fuel, by the pressure of the liquid fuel acting upon a piston connected to the said Valve.
My invention more particularly relates to` and shownin my application for United States Letters Patent, filed April 30, 1923,
Serial No. 635,788, in which thepliquid fuelr is admittedv by a passage of very small sectional area, between the cylindrical external surface of Athis piston and the cylindrical bore in which the said piston is displaceable, so as to obtain a constant sectional area of passage for the liquid fuel, with a View to ensure its mechanical lamination before its mixture with the difusion air or gas under pressure, whatever be the quantity of liquid fuel admitted,the said lamination of the liquid fuel being thus maintained whatever be the lift of the piston.
According to my present-invention, this passage of constant sectional area for the liquid fuel consists of an accurately gauged annular clearance space of small-.and conv stant cross sectional area rprovided between the cylindrical external surface of the piston and its cylindrical lodgment in the valvecasing.
- The accompanying drawing represents by f,
way of example one form of construction in accordance with my invention.
Fig. 1 is a vertical axial section through the injection device, and
Fig. 2 a horizontal section on line 2-2 of Fig. 1.
As shown, a is the body of the injector, adapted to besecured by a screwthread to fthe cylinder head b of the engine. The body a receives on one side the end c of the compressed air supply pipe, and, on the otherl In the valve casing e is arranged a valve body consisting of a. fiat-seated valve Z, fast,
with a cylindrical member or piston m, located in a cylindrical bore c provided inthe valve easing e. The external diameter of this piston m andthe internal diameter of the ybore k are such as to provide an acculrately gauged annular clearance between the the valve and, at the other end, upon a tubular plug '0, screwed 4in the member 1 and which serves at the same time as a stop for v' the valve-stem'Z1 for the purpose of limiting the lift of the valve Z. Notches 01, provided in the lower end of the tubular plug o, allow the compressed air, admitted through c and an opening c1 in the valve casing e, always to exert its pressure upon the whole surfaceof the valve Z, so as to ensure, together with the spring n, rapid closing of'this valve.
Liquid fuel is supplied from oZ through the port. Z1 beneath Ythe piston m. Under the pressure of the fuel delivered by the injection pump (not shown), the, piston fm is lifted, raising with it the valve Z which is raised from its. flat seating e1; the liquid fuel is discharged through the very small but accurately calibrated clearance provided between the cylindrical piston m and bore,l 7c, and passes, in tlieform of a thin film, be'
tween the flat JValve Z and its seat el; the compressed4 air, at the same time admitted through c 01, and the space between the valve l Z and its seat c1, in the form of a thin film,
meets with the said fuel and mixes therewith in an annular chamber, consisting of a circular groove e2 recessed 1n the seat e1 of the valve, between the inlets of air and fuel controlled by the said valve. The mixture thus formed passes through convergent-divergent nozzle e3, arranged symmetrically to the axis of tlievalve and opening into the annular mixing chamber c2; these nozzlesieS discharge into the engine cylinder, so
as to increase the speed of the mixture and to distribute'this fuel mixture upon a greater area in the engine cylinder.
By the above described arrangement, there is obtained a thorough atomization of the liquid fuel and diffusion air or gas and a thorough mixture of the same.
What claim is:
lll)
1. A fuel injection device for internal comg f i 111316,335
bustion engines, comprising a body, separate inlet passages in said body for fuel and gas supplied under pressure, a single Valve member arranged to control passage through the body of both fuel and gas under pressure by t its displacement relatively t'o the body, a vpiston connected 'to said valve member, a vcylindrical bore in the body for receiving the piston, the piston having an external diameterslightly less than the internal diameter of the bore in the body so as to provide an accurately gauged annular clearance space of small and constant cross sectional area between the cylindrical external surface of the piston andthe cylindrical bore in the body member, means establishing communication between said fuel inlet and said bore whereby said piston together with the valve member is moved relatively to said body through a pressure exerted on said piston by the fuel to thus allow passage of fuel and gas under pressure through the body, and means for moving the valve member with the associated piston in the opposite direction for cutting olf the flow of fuel and gas under pressure.
2. A fuel injection device for i'nternal combustion engines, comprising a body, separate inlet' passages'in said body for fuel and gas supplied under pressure, a valve seat, a single valve" member closing on the seat and arranged to control passage'through the body of both fuel and gas under pressure by its displacement relatively to the body, a piston connected to said valve member, a V cylindrical bore in thebody for receiving the piston, the piston having an externaludiameter slightly less than the internal diameter ofthe bore in the body so as to provide an accurately gauged annular clearance space 49 of small and constant cross sectional area be tween the cylindrical external surface of the piston and the cylindrical bore in the body member, said body Abeing formed with an annular mixing chamber for the liquid-fuel and gas under pressure positioned in the -valve seat communicating with the engine cylinder, means establishing communication between said fuel inlet and said bore whereby said piston together with the valve mem- 50 ber is moved relatively to said body through pressure exerted on said piston by the fuel to thus allow passage of fuel and gas under pressure through thebody, and means for moving the valve member with the associated piston in the oppositel direction for cutting oil' the flow of fuel and gas under pressureT A fuel injection device for internal-combustion engines, comprising a body, separate inlet passages in said body for the fuel' and 6 gas supplied under pressure, a,I valve memberw arranged to control passage through the body of both fuel and gas under pressure by its ,displacement relatively to the body, a piston vconnected to said valve member, a cylindrical bore in"the'body for receiving the pist-on, the piston having an external diameterslightly less than the internal diameter of the bore in the body member so as to provide an accurately gauged annular clearancespace between the cylindrical external surf face of the piston and the cylindrical bore in the body, thevalve member having a flat portion for controlling both the flow of the gas 'under pressurel and of the liquid fuel passing through the accurately gauged an-f nular clearance space, means estabhshmg bustion engines, comprising a body, separate inlet passages in said body for the fuel andl .gas supplied under pressure, a valve seat,
a valve member closing on the seat and ar ranged to control passage of both fuel and gas under pressure through the body by its `displacement relatively to the body, a piston 'connected to said valve membera cylindrical bore in the body for receiving the piston,
the piston having an external diameter slightly less than the internal diameter of the bore in the body soas to provide an accurately gauged annular clearance space between the cylindrical `external surface of the piston and the cylindrical bore in the body, means establishing 'communication between said fuel inlet and said bore whereby said piston together with the valve member is moved relatively to said body through pressure exertedon said piston by the 'fuel to thus allow passage of fuel and gas under pressure through the body, and means for moving the valve member with the associated piston in the opposite direction for cutting off the How of fuel and gas under pressure, and convergent-divergent body outlet nozzles arranged symmetrically of the axis `of the. valve member, opening into the'valve seat, and arranged to discharge directly into an engine cylinder. y
In testimony whereof I have signed my name to this specification.
FRAN QOIS RGCHEFORT.
US757170A 1923-12-28 1924-12-20 Fuel-injection device for internal-combustion engines Expired - Lifetime US1616335A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1616335X 1923-12-28

Publications (1)

Publication Number Publication Date
US1616335A true US1616335A (en) 1927-02-01

Family

ID=9679632

Family Applications (1)

Application Number Title Priority Date Filing Date
US757170A Expired - Lifetime US1616335A (en) 1923-12-28 1924-12-20 Fuel-injection device for internal-combustion engines

Country Status (3)

Country Link
US (1) US1616335A (en)
FR (1) FR575102A (en)
GB (1) GB223468A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3093157A (en) * 1960-12-02 1963-06-11 Adrien J Aitken Metering and mixing apparatus
US4202170A (en) * 1976-12-29 1980-05-13 Daimler-Benz Aktiengesellschaft Combustion chamber for gas turbines
US4478412A (en) * 1982-05-26 1984-10-23 Muir Arthur M Exercise device and control valve therefor
US4813610A (en) * 1986-05-16 1989-03-21 Lucas Industries Public Limited Company Gasoline injector for an internal combustion engine
US5146904A (en) * 1991-06-20 1992-09-15 Outboard Marine Corporation Internal combustion engine fuel supply system
US5441203A (en) * 1993-01-25 1995-08-15 Lurmark Limited Spray nozzle holder containing two valves for flow control
US11306686B2 (en) * 2018-06-06 2022-04-19 Aisan Kogyo Kabushiki Kaisha Fluid control valve

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3093157A (en) * 1960-12-02 1963-06-11 Adrien J Aitken Metering and mixing apparatus
US4202170A (en) * 1976-12-29 1980-05-13 Daimler-Benz Aktiengesellschaft Combustion chamber for gas turbines
US4478412A (en) * 1982-05-26 1984-10-23 Muir Arthur M Exercise device and control valve therefor
US4813610A (en) * 1986-05-16 1989-03-21 Lucas Industries Public Limited Company Gasoline injector for an internal combustion engine
US5146904A (en) * 1991-06-20 1992-09-15 Outboard Marine Corporation Internal combustion engine fuel supply system
US5441203A (en) * 1993-01-25 1995-08-15 Lurmark Limited Spray nozzle holder containing two valves for flow control
US11306686B2 (en) * 2018-06-06 2022-04-19 Aisan Kogyo Kabushiki Kaisha Fluid control valve

Also Published As

Publication number Publication date
FR575102A (en) 1924-07-24
GB223468A (en) 1924-10-23

Similar Documents

Publication Publication Date Title
US1616335A (en) Fuel-injection device for internal-combustion engines
US2574670A (en) Carburetor
US2322606A (en) Internal combustion engine
US4153200A (en) Fuel injection nozzles
US10415508B2 (en) Charge forming device with air bleed control valve
US1466085A (en) Internal-combustion engine
GB631750A (en) Improvements in or relating to fuel-control valves
US1838675A (en) Carburetor
US2516690A (en) Automatic fuel injector
US2413111A (en) Fuel injection device for internal-combustion engines
US2220949A (en) Fuel feeding means for internal combustion engines
US1289716A (en) Fuel-pump for internal-combustion engines.
US2702029A (en) Liquid fuel injection pump for internalcombustion engines
US2323184A (en) Fuel injection in internal combustion engines
US2407610A (en) Fuel injection in internalcombustion engines
US1740316A (en) Fuel-injection device for internal-combustion engines
US1315462A (en) Fuel-valve for internal-combustion engines.
US1143258A (en) Inspirator for internal-combustion engines.
GB191509382A (en) Improvements in Devices for Atomising Liquid Fuels in Internal Combustion Engines.
US1150224A (en) Internal-combustion-engine mixer.
US1411034A (en) Fuel feeding device for internal combustion engines
GB709837A (en) A delivery valve for pumps supplying liquid fuel to internal combustion engines
US1400328A (en) Internal-combustion engine
US706050A (en) Mixing-valve for gas or gasolene engines.
US2816534A (en) Fuel injection apparatus