US3641802A - Method and apparatus for setting the flow rate of a fuel injection nozzle - Google Patents

Method and apparatus for setting the flow rate of a fuel injection nozzle Download PDF

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Publication number
US3641802A
US3641802A US858680A US3641802DA US3641802A US 3641802 A US3641802 A US 3641802A US 858680 A US858680 A US 858680A US 3641802D A US3641802D A US 3641802DA US 3641802 A US3641802 A US 3641802A
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US
United States
Prior art keywords
slot
plug member
body member
flow rate
seat
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
US858680A
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English (en)
Inventor
Basil S Segro
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.)
Parker Intangibles LLC
Original Assignee
Parker Hannifin Corp
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Filing date
Publication date
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Assigned to PARKER INTANGIBLES INC., A CORP. OF DE reassignment PARKER INTANGIBLES INC., A CORP. OF DE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: PARKER-HANNIFIN CORPORATION
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/168Assembling; Disassembling; Manufacturing; Adjusting
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/162Means to impart a whirling motion to fuel upstream or near discharging orifices
    • F02M61/163Means being injection-valves with helically or spirally shaped grooves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2700/00Supplying, feeding or preparing air, fuel, fuel air mixtures or auxiliary fluids for a combustion engine; Use of exhaust gas; Compressors for piston engines
    • F02M2700/07Nozzles and injectors with controllable fuel supply
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49428Gas and water specific plumbing component making
    • Y10T29/49432Nozzle making
    • Y10T29/49433Sprayer

Definitions

  • ABSTRACT A method and apparatus wherein a tapered plug member, e.g. [52] US. Cl. ..72/377, 29/157 C, 239/546 a cone or a ball, is forcibly engaged with a nozzle body [51] Int. Cl ..B2ld 51/ 38 member to progressively deform the latter to decrease the Field Of C, 404, l flow capacity through the Swirl slots in [he member until 2 2 461, 546, a desired fluid flow rate is achieved.
  • a tapered plug member e.g. [52] US. Cl. ..72/377, 29/157 C, 239/546 a cone or a ball
  • the flow rate of the nozzle is determined by the width and depth of the swirl slots, and there is no way of adjusting the flow rate except by removing the plug member and increasing the width and/or depth of the swirl slots therein.
  • This expedient requires that the swirl slots in the plug member first be made of smaller size than desired, and, as evident, it would be an expensive and time consuming operation to progressively increase the flow area of the swirl slots to provide a desired precisely set flow rate.
  • this type of nozzle construction reference may be had to the patents to Cleminshaw et al. US Pat. No. 3,024,045, granted Mar. 6, 1962, and to Moebius et al. U.S. Pat. No. 3,159,971, granted Dec. 8, 1964.
  • the swirl slot flow rate of a nozzle may be precisely set over a relatively wide range so that the flow rate of a series of nozzles may be matched exactly (within the limits of accuracy and readability of a pressure gauge and a flow meter) while yet the parts of the nozzle may be manufactured to usual tolerances as applied in the nozzle art, this being a principal object of the present invention.
  • Another object of this invention is to provide a method and apparatus wherein plug and body members of different hardnesses are forcibly engaged with each other while fluid is flowing through the swirl slots defined between said members until the deformation of the softer member, and resulting decrease in swirl slot area, reaches the point where the flow rate is precisely a desired value.
  • FIG. 1 is a central vertical cross section view of apparatus for accurately setting the flow rate ofa fuel injection noule
  • FIGS. 2, 3 and 4 are enlarged fragmentary cross section views illustrating the manner in which the seat at the upstream end of the vortex chamber of a nozzle body member is progressively deformed to progressively decrease the depth of a swirl slot in said body member thus to accurately set the flow rate of fuel therethrough, FIG. 3 being a cross section view taken substantially along line 33, FIG. 4, and FIG. 4 being a cross section view taken substantially along line 44, FIG. 3 with the plug member removed;
  • FIG. 5 is a diametrical cross section view illustrating an assembled fuel injection nozzle having a precise flow rate as set by use of the FIG. 1 apparatus and method;
  • FIG. 6 is a fragmentary cross section view of a modified form of apparatus wherein a ball rather than a conical plug member is employed to deform the seat at the upstream end of the vortex chamber to predeterminately set the flow rate through the swirl slot; and
  • FIG. 7 illustrates the assembled nozzle which utilizes a ball as the plug member to determine the depth of the swirl slot leading into the injection nozzle vortex chamber.
  • the nozzle body 1 is of a type which is adapted to have screw-threaded engagement with an adapter (not shown) secured on a fuel manifold ring or the like, said body 1 being provided with a fuel discharge orifice 2, a vortex chamber 3, of which the rear wall is defined by a tapered plug member 4 which in FIG. 7 is a ball 5.
  • the plug member 4 (or 5) is engaged with a seat 6 of the vortex chamber 3 to span the upwardly open swirl slot or groove 7, In FIG.
  • the plug member 4 has a fuel supply passage 8, the fuel flowing through the strainer 9 and around the lower end of the plug member 4 into the swirl slot or slots 7 from whence it enters the vortex chamber 3 tangentially so that the fuel has imparted thereto a whirling motion for emergence from the discharge orifice 2 in the form of a hollow spray cone 10,
  • the plug member constitutes the ball 5 and a ball retainer 11 which has a passage 12 and strainer 13. In both cases, the'plug member 4 in FIG. 5 and the ball retainer 11 in FIG. 7 are locked in place as by staking.
  • the nozzle body I is inserted into the housing 15 and is sealed therein by means of the O-ring or like seal 16 and is accurately held in said housing 15 as by means of a cap 17 which has threaded engagement with said housing 15.
  • a hardened pressing member 18 has screw-threaded engagement with said housing and has a conical end 19 which is of the same taper as the conical end of the plug member 4 which later is to be installed in the nozzle body I.
  • the conical end of the plug member 4 and of the pressing member 18 has an apex angle of about 170.
  • the conical end 19 of the pressing member 18 first engages the relatively sharp-edged seat 6 in substantially line contact as best shown in FIG. 2 and as the member 18 is turned by its knob 20, the lower end 19 progressively deforms the seat 6 to frustoconical form as shown in FIGS. 3 and 4.
  • the housing 15 is provided with a fuel inlet port 21 to which is connected a fuel supply line 22 having a flow meter 23 and a pressure gauge 24 therein, and as the pressing member 18 is turned, the rate of flow of fuel through swirl slot or slots 7 will decrease as indicated by the flow meter 23.
  • the turning of the pressing member 18 is discontinued and the nozzle body I may be removed and heat treated to harden the same.
  • the plug member 4 with its strainer 9 will be screwed into the body 1 until the lower conical end of the plug member 4 engages the seat 6 to provide a noule body and plug assembly having the desired flow rate as previously set by deformation of the seat 6 and consequent decrease of the depth of the swirl slot 7.
  • the width and depth thereof will provide a swirl slot flow area which is greater than desired when the pressing member 18 initially engages the seat 6 in line contact as shown in FIG. 2.
  • the member 18 will be turned slowly until the flow rate through the swirl slot or slots 7 is of desired value, and as the pressing member 18 is turned, the lower end 19 thereof will compress the seat 6 progressively to frustoconical form while the depth of the swirl slot or slots 7 is progressively decreased.
  • one nozzle body 1 was made with swirl slots 7 having a nominal capacity of approximately 18 lbs/hr.
  • Another feature of this invention is that by reason of the conical bore 25 of the retaining cap or nut 17 it is possible to observe and measure the spray cone l angle and the accuracy of alignment of the spray cone axis with the axis of the discharge orifice 2.
  • Yet another feature of the present invention is that the pressing member 18 illustrated in FIGS. 1, 2, and 3, turns on the seat 6 while it presses against the seat 6 thus to effect a burnishing action to render the seat 6 smooth so that a fluidtight joint is readily obtained when the plug member 4 is screwed into the body 1.
  • the pressing member comprises a ball 5 which is pressed against the seat 6 by a screw-actuated member 26.
  • the ball 5 will progressively deform the seat 6 thus to progressively decrease the depth of the swirl slot or slots 7 until the desired accurate flow rate is established as in FIG. 1.
  • the same ball 5 may be used, if desired, in the completed nozzle body and plug assembly shown in FIG. 7.
  • Apparatus for setting the flow rate of the swirl slot of a nozzle body member having a vortex chamber into which said slot opens and a discharge orifice for discharge of whirling fuel from said chamber in hollow spray cone form comprising a housing having an inlet port for connection to a fluid supply source and an outlet port to receive said nozzle body member for flow of fluid through said slot, chamber, and orifice; a plug member in said housing engageable with said body member to close the upstream end of said chamber and to span the width of said slot; and actuating means for forcing said plug member against said body member to progressively deform the latter so as to progressively decrease the depth of said slot until the rate of flow of fluid through said body member reaches a desired value.
  • said plug member has a tapered surface which initially engages said body member in substantially line contact, such contact progressively widening radially as such deformation progresses.
  • a cap member detachably secured to said housing is operative to clamp said body member in said outlet port, said cap member having an opening through which fluid is sprayed from said orifice.
  • said actuating means comprises interengaged screw threads on said housing and plug member whereby, upon rotation of said plug member, said body member is compressively deformed and, at the same time, burnished.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Fuel-Injection Apparatus (AREA)
US858680A 1969-09-17 1969-09-17 Method and apparatus for setting the flow rate of a fuel injection nozzle Expired - Lifetime US3641802A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US85868069A 1969-09-17 1969-09-17

Publications (1)

Publication Number Publication Date
US3641802A true US3641802A (en) 1972-02-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
US858680A Expired - Lifetime US3641802A (en) 1969-09-17 1969-09-17 Method and apparatus for setting the flow rate of a fuel injection nozzle

Country Status (4)

Country Link
US (1) US3641802A (de)
CA (1) CA921954A (de)
DE (1) DE2045596A1 (de)
GB (1) GB1318644A (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3847011A (en) * 1973-07-23 1974-11-12 C Errett Apparatus for adjusting fuel delivery in diesel injectors
US3995356A (en) * 1971-11-04 1976-12-07 Avm Corporation Valve system
US4030668A (en) * 1976-06-17 1977-06-21 The Bendix Corporation Electromagnetically operated fuel injection valve
US4057190A (en) * 1976-06-17 1977-11-08 Bendix Corporation Fuel break-up disc for injection valve
US4317357A (en) * 1980-06-10 1982-03-02 Jerry Moen Jet orifice reducer
US5359876A (en) * 1991-11-19 1994-11-01 Robert Bosch Gmbh Method for producing a nozzle holder of an electromagnetically actuated injection valve
EP1312794A1 (de) * 2001-11-16 2003-05-21 Robert Bosch Gmbh Brennstoffeinspritzventil
US6679953B1 (en) * 2002-06-26 2004-01-20 Cummins Engine Company, Inc. Method for assembling and hardening a ball plug in a counterbore of a fuel injector nozzle assembly
EP1686258A1 (de) * 2004-12-29 2006-08-02 Robert Bosch Gmbh Dosierungsvorrichtung für Flüssigkeiten
US20140183286A1 (en) * 2011-08-08 2014-07-03 Mitsubishi Electric Corporation Fuel injection valve

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4025945C2 (de) * 1990-08-16 1998-10-08 Bosch Gmbh Robert Verfahren zur Einstellung eines Brennstoffeinspritzventils und Brennstoffeinspritzventil
DE19947780A1 (de) 1999-10-02 2001-04-12 Bosch Gmbh Robert Verfahren zum Einstellen der Strömungsmenge an einem Brennstoffeinspritzventil

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3095175A (en) * 1961-01-19 1963-06-25 Iketani Taisho Gaseous fuel regulating device for liquefied gas lighters
US3150442A (en) * 1963-03-12 1964-09-29 Sheffield Corp Method of making a nozzle

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3095175A (en) * 1961-01-19 1963-06-25 Iketani Taisho Gaseous fuel regulating device for liquefied gas lighters
US3150442A (en) * 1963-03-12 1964-09-29 Sheffield Corp Method of making a nozzle

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3995356A (en) * 1971-11-04 1976-12-07 Avm Corporation Valve system
US3847011A (en) * 1973-07-23 1974-11-12 C Errett Apparatus for adjusting fuel delivery in diesel injectors
US4030668A (en) * 1976-06-17 1977-06-21 The Bendix Corporation Electromagnetically operated fuel injection valve
US4057190A (en) * 1976-06-17 1977-11-08 Bendix Corporation Fuel break-up disc for injection valve
US4317357A (en) * 1980-06-10 1982-03-02 Jerry Moen Jet orifice reducer
US5544514A (en) * 1991-11-19 1996-08-13 Robert Bosch Gmbh Method for producing a nozzle holder of an electromagnetically actuated injection valve
US5359876A (en) * 1991-11-19 1994-11-01 Robert Bosch Gmbh Method for producing a nozzle holder of an electromagnetically actuated injection valve
EP1312794A1 (de) * 2001-11-16 2003-05-21 Robert Bosch Gmbh Brennstoffeinspritzventil
EP1450035A2 (de) * 2001-11-16 2004-08-25 Robert Bosch Gmbh Brennstoffeinspritzventil
EP1450035A3 (de) * 2001-11-16 2004-09-01 Robert Bosch Gmbh Brennstoffeinspritzventil
US6679953B1 (en) * 2002-06-26 2004-01-20 Cummins Engine Company, Inc. Method for assembling and hardening a ball plug in a counterbore of a fuel injector nozzle assembly
EP1686258A1 (de) * 2004-12-29 2006-08-02 Robert Bosch Gmbh Dosierungsvorrichtung für Flüssigkeiten
US20140183286A1 (en) * 2011-08-08 2014-07-03 Mitsubishi Electric Corporation Fuel injection valve
US9810188B2 (en) * 2011-08-08 2017-11-07 Mitsubishi Electric Corporation Fuel injection valve

Also Published As

Publication number Publication date
CA921954A (en) 1973-02-27
GB1318644A (en) 1973-05-31
DE2045596A1 (de) 1971-03-25

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Date Code Title Description
AS Assignment

Owner name: PARKER INTANGIBLES INC., A CORP. OF DE, DELAWARE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:PARKER-HANNIFIN CORPORATION;REEL/FRAME:005886/0169

Effective date: 19881221