US2566888A - Fuel spray producing nozzle - Google Patents

Fuel spray producing nozzle Download PDF

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Publication number
US2566888A
US2566888A US730768A US73076847A US2566888A US 2566888 A US2566888 A US 2566888A US 730768 A US730768 A US 730768A US 73076847 A US73076847 A US 73076847A US 2566888 A US2566888 A US 2566888A
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US
United States
Prior art keywords
fuel
passage
valve
pintle
nozzle
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
US730768A
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English (en)
Inventor
Holt George Allen
Brook Kenneth
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.)
Ricardo & Co Engineerins (1927) Ltd
Ricardo & Co Engineerins 1927
Original Assignee
Ricardo & Co Engineerins 1927
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 Ricardo & Co Engineerins 1927 filed Critical Ricardo & Co Engineerins 1927
Application granted granted Critical
Publication of US2566888A publication Critical patent/US2566888A/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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/06—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series the valves being furnished at seated ends with pintle or plug shaped extensions
    • 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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve 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
    • F02M2700/00—Supplying, feeding or preparing air, fuel, fuel air mixtures or auxiliary fluids for a combustion engine; Use of exhaust gas; Compressors for piston engines
    • F02M2700/07—Nozzles and injectors with controllable fuel supply
    • F02M2700/074—Injection valve actuated by fuel pressure for pressurised fuel supply

Definitions

  • the object of the presentinvention is to provide a fuel injection nozzle in which the fuel is delivered through at least two separate orifices so arranged that with increase in the rate of fuel supply the flow of fuel through one of these orifices will increase while thesfiow through the other orifice or orifices will decrease.
  • the improved nozzle in addition to a central delivery orifice in the casing of the nozzle there is at least one livery port and allow the free new offuel through it to begin.
  • the improved construction comprises in combination a casing in which is a conical seat for a valve and beyond it at the end of the casing a central opening or passage through which the at one end in an orifice withingthe casing and at the other end in an open central outlet orifice, a needle valve of the pintle type comprising a body with a conical valve formation thereon adapted to engage the said seating in the casing and at its end a pintle which extends beyond the valve and can enter and has a part which then closely fits the central delivery opening, the part of the pintle which fits in the opening being of such lengththat the needle must be withdrawn a substantial distance after the valve is raised off its seat before the pintle end opens or discloses the port constituted by the central opening and permits any free fiow of fuel through this port which then constitutes the main fuel delivery orifice, and at least one hole through the wall at the end of the nozzle casing and spaced radially outwards from the central or maindeliveryorifice, each such hole constituting
  • the valve which engages this seat is formed on a needle body at the end of which is a projection or pintle a part of which is cylindrical and a close sliding fit within the cylindrical delivery passage in the end of the nozzle casing.
  • the outer end portion of the pintle is coned inwards towards its axis for a short, distance and then diverges in an expanding cone for a greater distance, these two cones being for the purpose of determining the angle of the spray delivered.
  • nozzle is being fed with fuel, for example, by an injection pump such as those in which the plunger is lifted by acam or other device to deliver a predetermined quantity of fuel to the nozzle.
  • the pressure continues to build up in the annular chamber below the valve seat under the continued delivery of fuel by the pump plunger until the cylindrical portion of the pintle is Just about to leave the end of the cylindrical passage in the nose of the nozzle casing.
  • the valve continues to lift under the continued supply of fuel, and discharge of fuel takes place through the annulus formed by the two spray determining cones formed on the nose of the pintle which lie more or less within the cylindrical passage in the nose of the nozzle casing depending on the degree of lift of the valve.
  • Figure 1 is a somewhat diagrammatic longitudinal sectional elevation of the improved noz- 4 zle on an enlarged scale showing the needle valve seated when no fuel flow is taking place.
  • Figure 2 is'a similar view but showing the needle valve lifted to permit free fuel flow.
  • the valve seat B is arranged between the delivery opening C and an annular chamberD formed in the casing A around the needle valve and into which the fuel is delivered under pressure in the usual way.
  • the needle valve comprises a body E with a conical valve F formed on it and adapted to engage the seating B. Extending from the body E beyond the valve F is the pintle G having a cylindrical part G which as seen in Figure 1 can enter and closely fit the delivery jpassage C, with the end portion formed with cones G and G in a known way. It will, be seen in Figure 1 that when the needle is positioned with the valve F on the seat B there is formed around the pintle G and beyond the valve an annular chamber H. From this chamber at least one passageway J runs as a plain hole through the casing A at one side of the'central delivery passage C.
  • the needle valve E is acted on invthe usual way by a spring, not shown, and this spring tends to keep the valve F on the seating B.
  • the resistance to fuel flow through the cylindrical passage 0 is determined by the position of the end of the cylindrical portion G of the pintle in relation to the orifice at the inner end of the passage 0 and not by an annular clearance between these parts.
  • the converging-diverging cones G'-G at the end of the pintle determine the angle of the spray delivered. If
  • the quantity of fuel discharged through a plain single hole J may be of the order of 6 times the quantity of fuel discharged by way of the pintle controlled passage C, while the same nozzle when the rate of fuel supply is substantially increased, i. e. with the fuel pump running faster but with the same delivery of fuel per stroke of the pump, gives a discharge through the pintle controlled passage C which is of the order of 4 times the discharge through the plain hole J.
  • the nozzle on which this observation was made had only one plain hole J as shown in the drawings.
  • the characteristic was such that at a low rate of fuel supply the flow through the pintle controlled passage C was substantially zero, the whole of the fuel supplied being delivered through the plain hole J, while at a higher rate of fuel supply, the flow through the pintle orifice C was three times the flow through the plain hole J.
  • the improved n0z zle may be used with a continuous supply of liquid as well as with an intermittent supply.
  • the total quantity of liquid discharged by the nozzle is controlled by varying the pressure of the liquid supply.
  • the whole of the discharge other than unintentional leakage past the pintle G will at low rates of liquid supply be through the plain hole or holes J.
  • the rate of supply at which intentional delivery of liquid by way of the pintle controlled passage will take place will be determined by the pressure of the liquid supply and the rate or the springer springs loading the valve.
  • the total liquid discharge of the nozzle shall have various flow characteristics including a substantially straight line flow characteristic in relation to the rate of liquid supply to the nozzle or the pressure of the liquid supplied to the nozzle.
  • a fuel spray-producing nozzle comprising incombination a casing for the nozzle, a central main cylindrical delivery passage leading from an orifice within the casing to an open central outlet orifice, a seating for a valve within the casing and set back from the orifice at the inlet end of the main delivery passage, at least one passage through the wall of thecasing and posiwith the rate of fuel tioned laterally with respect to the central main delivery passage, the lateral delivery passage having a substantially smaller cross sectional area than the main delivery passage, a needle valve adapted to seat on said seating and a cylindrical pintle forming an extension beyond the needle valve and adapted to fit closely and slide in the main delivery passage, the length of the cylindrical part of the pintle which closely fits within this passage being such that, whereas for low rates of fuel delivery the valve will open to permit fuel to flow to the lateral passage without the cylindrical part of the pintle being withdrawn from the main delivery passage, at higher rates of fuel delivery the cylindrical part of the pintle will be withdrawn from the main
  • a fuel sprayproducing nozzle comprising in combination a casing for the nozzle, a main central delivery cylindrical passage leading from an orifice within the casing to a central delivery orifice, a seating for a valve within the casing and set back from the orifice at the inner end of the said central delivery passage, at least one passage through the wall of the casing and posi tioned laterally with respect to the said main central delivery passage, this lateral passage running from a place between the said valve seating and the said orifice of the central delivery passage'and being of small cross sectional area compared with the main delivery passage, a needle valve member having a formation constituting a valve and adapted to engage the said seating and beyond this valve a part of less diameter which is at least partly cylindrical and forms a pintle extending beyond the valve for such a distance that when the valve is on the said seating the cylindrical extension will lie and fit closely in the said central delivery passage and there will then be an annular chamber between the said valve on its seat and the orifice at the inner end of the said main

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Pressure-Spray And Ultrasonic-Wave- Spray Burners (AREA)
US730768A 1946-08-28 1947-02-25 Fuel spray producing nozzle Expired - Lifetime US2566888A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB278374X 1946-08-28

Publications (1)

Publication Number Publication Date
US2566888A true US2566888A (en) 1951-09-04

Family

ID=10266102

Family Applications (1)

Application Number Title Priority Date Filing Date
US730768A Expired - Lifetime US2566888A (en) 1946-08-28 1947-02-25 Fuel spray producing nozzle

Country Status (7)

Country Link
US (1) US2566888A (xx)
BE (1) BE475438A (xx)
CH (1) CH278374A (xx)
DE (1) DE926050C (xx)
FR (1) FR937797A (xx)
GB (1) GB617795A (xx)
NL (1) NL70310C (xx)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2827782A (en) * 1952-12-16 1958-03-25 Brown & Bigelow Liquefied petroleum gas lighter
WO2007052071A1 (en) * 2005-11-01 2007-05-10 The Boc Group Plc Nozzle for emitting solid carbon dioxide particles with an axially displaceable valve member; apparatus for cooling a heated weld zone with such a nozzle; welding apparatus with such cooling apparatus
US20140175192A1 (en) * 2012-12-21 2014-06-26 Quantlogic Corporation Mixed-mode fuel injector with a variable orifice

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3387790A (en) * 1967-04-11 1968-06-11 Bosch Arma Corp Fuel injection nozzle
DE2709161A1 (de) * 1977-03-03 1978-09-07 Maschf Augsburg Nuernberg Ag Luftverdichtende, direkt einspritzende brennkraftmaschine
DE2751513A1 (de) * 1977-11-18 1979-05-23 Daimler Benz Ag Drosselzapfen-einspritzventil
DD134976B1 (de) * 1978-03-16 1980-12-24 Helmut Nehrig Einspritzduese fuer brennkraftmaschinen
DE2826602C2 (de) * 1978-06-19 1982-07-15 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg Luftverdichtende, direkteinspritzende Brennkraftmaschine
DE2836095C2 (de) * 1978-08-17 1986-04-03 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg Kraftstoffeinspritzdüse für luftverdichtende Brennkraftmaschinen
DD153167A1 (de) * 1980-09-12 1981-12-23 Hans Gaertner Mehrstrahl-zapfenduese fuer direkteinspritzung bei verbrennungsmotoren
DE3113475A1 (de) * 1981-04-03 1982-10-21 Robert Bosch Gmbh, 7000 Stuttgart "kraftstoffeinspritzduese"
GB8318802D0 (en) * 1983-07-12 1983-08-10 Lucas Ind Plc Fuel injection nozzles
DE3510076A1 (de) * 1985-03-20 1986-10-16 Klöckner-Humboldt-Deutz AG, 5000 Köln Luftverdichtende brennkraftmaschine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1833080A (en) * 1931-01-14 1931-11-24 Worthington Pump & Mach Corp Fuel injection or spray valve
FR812411A (fr) * 1935-07-26 1937-05-10 Bosch Robert Dispositif de pulvérisation pour peintures et matières semblables s'appliquant par projection
DE671686C (de) * 1936-11-08 1939-02-11 Humboldt Deutzmotoren Akt Ges Zapfenduese fuer Einspritzbrennkraftmaschinen
US2235365A (en) * 1937-05-24 1941-03-18 Henschel & Sohn Gmbh Fuel injection valve for internal combustion engines

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE663301C (de) * 1933-03-14 1938-08-04 Bosch Gmbh Robert Einspritzduese fuer Brennkraftmaschinen mit Selbstzuendung
FR791105A (fr) * 1934-07-04 1935-12-04 Siemens Ag Dispositif d'injection pour moteurs diesel à injection préalable et injection principale
DE703194C (de) * 1937-05-24 1941-03-03 Henschel & Sohn G M B H Zapfenduese fuer Einspritzbrennkraftmaschinen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1833080A (en) * 1931-01-14 1931-11-24 Worthington Pump & Mach Corp Fuel injection or spray valve
FR812411A (fr) * 1935-07-26 1937-05-10 Bosch Robert Dispositif de pulvérisation pour peintures et matières semblables s'appliquant par projection
DE671686C (de) * 1936-11-08 1939-02-11 Humboldt Deutzmotoren Akt Ges Zapfenduese fuer Einspritzbrennkraftmaschinen
US2235365A (en) * 1937-05-24 1941-03-18 Henschel & Sohn Gmbh Fuel injection valve for internal combustion engines

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2827782A (en) * 1952-12-16 1958-03-25 Brown & Bigelow Liquefied petroleum gas lighter
WO2007052071A1 (en) * 2005-11-01 2007-05-10 The Boc Group Plc Nozzle for emitting solid carbon dioxide particles with an axially displaceable valve member; apparatus for cooling a heated weld zone with such a nozzle; welding apparatus with such cooling apparatus
US20140175192A1 (en) * 2012-12-21 2014-06-26 Quantlogic Corporation Mixed-mode fuel injector with a variable orifice

Also Published As

Publication number Publication date
GB617795A (en) 1949-02-11
FR937797A (fr) 1948-08-26
BE475438A (xx)
CH278374A (fr) 1951-10-15
DE926050C (de) 1955-04-04
NL70310C (xx)

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