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Publication numberUS3819116 A
Publication typeGrant
Publication dateJun 25, 1974
Filing dateMay 29, 1973
Priority dateJul 26, 1972
Also published asDE2334085A1
Publication numberUS 3819116 A, US 3819116A, US-A-3819116, US3819116 A, US3819116A
InventorsGoodinge M, Shephard R
Original AssigneePlessey Handel Investment Ag
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Swirl passage fuel injection devices
US 3819116 A
Abstract
A fuel injection system having an ultrasonically vibrated nozzle to provide for fuel atomisation. The nozzle has a fuel outlet having a ball valve to give a quick fuel shut-off. Fuel circulates continuously around the ball valve by passing through passageways. The circulating fuel swirls around the ball valve and this swirling facilitates quick fuel atomisation when the nozzle is vibrated.
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Description  (OCR text may contain errors)

United States Patent 1191 1111 3,819,1 l6 Goodinge et al. 1 June 25, 1974 [5 1 SWIRL PASSAGE FUEL INJECTION 2,079,430 5/1937 Bargeboer 239/125 DEVICES 2,223,055 11/1940 Bergey 239/124 2,489,823 11/1949 Senninger... 239/127 Inventors: Mark Wallmger g 3,317,139 5/1967 Freeland 239/102 Brentwood; Robert Shephard, 3,589,610 6/1971 Wahlin et al. 239/125 Brakmgslde bmh of England FOREIGN PATENTS OR APPLICATIONS [73] Asslgnee g z gfi gx g 637,960 5/1950 Great B11131 239/125 '9 3 [22] Filed: May 29, 1973 P rimaryFxaminer M. Henson Wood,Jr.

, Assistant Examiner-John J. Love [211 App! 364857 Attorney, Agent, or Firm-Blunt, Moscovitz, Frietl man & Kaplan [30] Foreign Application Priority Data July 26, 1972 Great Britain .34848/72 57 ABSTRACT 52 11.5.01 239/102 239/125 239/463 A fuel injection System having ultrasonically 51 Int. Cl 13050 17/06 brated "01116 Promi3 for fuel alomisatione The [58] Field of Search 0 239/102 124 125 I27 zle has a fuel outlet having a ball valve to give a quick 239/463 fuel shut-off. Fuel circulates continuously around the ball valve by passing through passageways. The circu- 56] References Cited lating fuel swirls around the ball valve and this swirling facilitates quick fuel atomisation when the nozzle is UNITED STATES PATENTS vibrated 1,416,424 5/1922 Seymour, Jr 239/125 We, 2 1,761,174 6/1930 Boesger 239/124 X 5 Claims, 1 Drawing {Figure J' \M/I -24 f:- 1 ---34 34- 1 111' 1 1 l, I 1 22 --22A 1 l 1 e i I ee SWIRL PASSAGE FUEL INJECTION DEVICES DISCLOSURE This invention relates to a fuel injection device and to a. fuel system employing the fuel injection device. The invention has applied in all fields of technology requiring injection of fuel and may therefore be used with, for example, turbo-jet engines, turbo-prop engines, other gas turbine engines, internal combustion engines of the two stroke, four stroke and diesel variety and central heating boilers.

It is known that atomization of liquid fuel can be effected by employing fuel injection devices which are vibrated, the vibrations being sufficient to cause the fuel to become atomized. In our co-pending U.S. application Ser. No. 327,905 we have described a vibratory fuel injection device employing a non-return valve,

preferably a ball valve, to prevent loss of fuel from the device when fuel ejection is not desired. The use of the non-return valve enables abrupt fuel cut-off and this is desirable to avoid wasting fuel and to enable good engine cut-off control to be achieved.

We have now found that efficient fuel atomization can be achieved if, during periods when the fuel injection device is not emitting fuel, the fuel is caused to swirl, especially in the vicinity of the non-return valve. The swirling fuel is more easily atomized when the fuel injection device is vibrated than non-swirling fuel. Greater ease of fuel atomization is especially desirable when the fuel injection device is only vibrated for relatively short periods, eg at low engine speeds when relatively little fuel is required.

The present invention thus provides in a broad aspect a fuel injection device comprising a housing having a fuel inlet, a first fuel outlet, a second fuel outlet, a swirl chamber position substantially adjacent said first fuel outlet, a valve for opening and closing said first fuel outlet and which is positioned solely in said swirl chamber and presents a substantial abutment area to the fuel in said swirl chamber, a first fuel passageway leading from said fuel inlet to said swirl chamber, and a second fuel passageway leading from said swirl chamber to said second fuel outlet, said fuel injection device being such that A. when said valve is closed then fuel can pass continuously through said device with fuel swirlage in said swirl chamber by entering said fuel inlet, passing along said first fuel passageway and into said swirl chamber, and then along said second fuel passageway, and then through said second fuel outlet, said fuel swirlage in said swirl chamber being caused by said movement of said fuel from said first fuel passageway to said second fuel passageway and by contact of said fuel with said abutment area of said valve, and 1 B. when said valve is open, fuel can pass throughsaid first fuel outlet in an atomized condition.

Preferably, the valve is a floating ball valve.

The present invention also provides a fuel injection system including a fuel injection device in accordance with the invention. 1

Preferably, the fuel injection system comprises a fuel injection device in accordance with the invention for injecting fuel into adesired area, for example into a duct carrying air to an engine, and a vibrator for vibrating the nozzle to produce atomization of the fuel injected by the nozzle.

Other types of non-return valve in addition to the above mentioned ball valve may of course be employed if desired. Various types of vibrator are known and the vibrator may include a piezo-electric element.

The fuel injection system of the present invention may include a fuel feed device for providing a flow of fuel to the nozzle. The fuel injection system may also include a timing control device which limits the energisation of the nozzlevibrations, e.g. ultrasonic vibrations, to uniformly spaced periods. Each timing period may constitute an adjustable part of the cycle related to the revolution of an engine. The timing control device may be so connected to an engine as to limit energisation of the ultrasonic vibrator to an adjustable part of each suction stroke of each cylinder fed by a flow duct.

In a preferred arrangement, in which there are periods when the fuel injection device is vibrated in its longitudinal direction and in which there are periods when there is no such vibration, the ball valve is arranged to be normally held on its seat by fuel pressure assisted, if desired or necessary, by spring action. Inertia forces are relied upon to effect, during the time in which vibrations are applied to the nozzle, periodic opening of the non-return valve to permit the flow of fuel. If desired, this inertia effect may be assisted or even replaced by magnetic action upon the non'retum valve, for example with the help of a solenoid coil which is energised during thedesired period of fuel injection, i.e. during the periods of vibration of the nozzle. The non-return valve is in this case made wholly or partly of magnetic material and is so arranged as to be urged in a direction away from its seat by the magnetic action of the energised solenoid.

When the fuel injection nozzle is vibrated, it will generally be vibrated with so-called ultrasonic vibrations or at so-called ultrasonic frequency. The vibrations obviously want to be sufficient to cause the jet of liquid to disintegrate into small mist-lilce particles. The frequency range in question may in practice be found to have its lower limit somewhere near the upper limit of audibility to a human ear. However, for reasons of noise suppression, it is generally preferable in practice to use frequencies high enough to ensure that audible sound is not produced.

An embodiment of the invention will now be described by way of example and with reference to the accompanying drawing which shows one form of fuel injection device in accordance with the invention.

Referring to the drawing, there is shown a fuel injection device 2having a housing 4. The housing 4 is provided with a fuel inlet 6, a first fuel outlet 8 and a second fuel outlet 10. A ball valve 12 is positioned at the inlet side of the first fuel outlet 8 and it will be noticed that the outlet 8 is provided with a restricted orifice 16 which is defined by an internal shoulder 18. Leading towards the ball valve 12 is an annular fuel passageway 20and leading away from the ballvalve 12 is an internal fuel passageway 22.

In operation of the device 2, fuel enters the device 2 through the fuel inlet 6 and passes up through the passageway 20 where it enters a swirl chamber 24 adjacent the ball valve 12. In this chamber 24, the fuel swirls around the ball valve 12, whenthe ball valve is in the closed position shown in the drawing, and then ultimately passes downwards along the fuel passageway 22. The fuel can then leave the device 2 through the second fuel outlet 10. When it is desired to eject fuel through the first outlet 8, the nozzle is vibrated by means of an ultrasonic vibrator 36. The vibrator vibrates the nozzle quickly and the ball valve is moved very many times away from its seat against the shoulder 18. Because of the swirling of the fuel, acceptable fuel atomization occurs immediately or alternatively very soon after the vibration is started.

The device 2 shown in the darwing can be constructed of any desired material. The passageway 20 will normally be constructed by drilling a centre bore 26 into the housing 4 and subsequently locating in the bore 26 a pipe 22A defining the bore 22. The pipe 22A is located by means of brazing joints 30, 32. It will be noted that the brazing joint 32 is provided with passageways 34 to allow fuel to pass therethrough. The brazing joint 30 is not provided with passageways because it is not desired to allow the fuel in the passageway 20 to pass downwardly to the second outlet 10. The fuel in the passageway 20 has to pass upwards through the passageways 34 in the brazing joint 32 and the fuel in the pipe 22A has to pass downwardly through the passageway 22 and therefore through the centre of the brazing joint 30. It will thus be apparent that when the device 2 is not being vibrated to eject fuel, then fuel is passing continuously through the device 2 from the inlet 6 to the outlet 10. Fuel leaving the outlet 10 can be recirculated, e.g. via a fuel tank.

What we claim is:

l. A fuel injection device comprising a housing having a fuel inlet, a first fuel outlet, a second fuel outlet, a swirl chamber positioned substantially adjacent said first fuel outlet, a valve for opening and closing said first fuel outlet and which is positioned solely in said swirl chamber and presents a substantial abutment area to the fuel in said swirl chamber, a first fuel passageway leading from said fuel inlet to said swirl chamber, and a second fuel passageway leading from said swirl chamber to said second fuel outlet, said fuel injection device being such that A. when said valve is closed then fuel can pass continuously through said device with fuel swirlage in said swirl chamber by entering said fuel inlet, passing along said first fuel passageway and into said swirl chamber, then along said second fuel passageway, and then through said second fuel outlet, said fuel swirlage in said swirl chamber being caused by said movement of said fuel from said first fuel passageway to said second fuel passageway and by contact of said fuel with said abutment area of said valve, and

B. when said valve is open fuel can pass through said first fuel outlet in an atomized condition.

2. A fuel injection device according to claim 1 in which said valve is a floating ball valve.

3. A fuel injection system including a fuel injection device as claimed in claim 1.

4. A fuel injection system according to claim 3 including a vibrator for vibrating the nozzle to produce atomization of the fuel injectedby the nozzle.

5. A fuel injection system according to claim 4 in which the vibrator includes a piezo-electric element.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1416424 *Dec 24, 1919May 16, 1922Jr James M SeymourOil burner
US1761174 *Apr 11, 1927Jun 3, 1930W W Sly Mfg CompanyAutomatic air-escape valve for sand-blast pressure tanks
US2079430 *Jul 13, 1934May 4, 1937Bargeboer AdolfOil burner device
US2223055 *May 20, 1939Nov 26, 1940Bergey Frank AllenVariable capacity atomizer
US2489823 *Mar 27, 1946Nov 29, 1949Sanmyer CorpLiquid fuel burner nozzle
US3317139 *Apr 13, 1965May 2, 1967Simms Group Res Dev LtdDevices for generating and delivering mechanical vibrations to a nozzle
US3589610 *May 15, 1969Jun 29, 1971Spraying Systems CoVariable flow rate spray gun with pressure relief
GB637960A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4000852 *Feb 24, 1976Jan 4, 1977Plessey Handel Und Investments A.G.Fuel atomizers
US4013223 *Jul 15, 1975Mar 22, 1977Plessey Handel Und Investments A.G.Fuel injection nozzle arrangement
US4166605 *Jan 19, 1977Sep 4, 1979Plessey Handel Und Investments AgDevice for metering liquids
US4277025 *Jun 21, 1979Jul 7, 1981Plessey Handel Und Investments AgVibratory atomizer
US4531679 *Jun 22, 1984Jul 30, 1985Solex (U.K.) LimitedElectromagnetically-operable fluid injection
US4982902 *Mar 20, 1981Jan 8, 1991Robert Bosch GmbhElectromagnetically actuatable valve
US5370315 *Oct 15, 1993Dec 6, 1994Del Gaone; Peter V.Spray gun for aggregates
US5553788 *Oct 14, 1994Sep 10, 1996Binks Manufacturing CompanySpray gun assembly and system for fluent materials
US5618001 *Mar 20, 1995Apr 8, 1997Binks Manufacturing CompanySpray gun for aggregates
US5801106 *May 10, 1996Sep 1, 1998Kimberly-Clark Worldwide, Inc.Polymeric strands with high surface area or altered surface properties
US5803106 *Dec 21, 1995Sep 8, 1998Kimberly-Clark Worldwide, Inc.Ultrasonic apparatus and method for increasing the flow rate of a liquid through an orifice
US5868153 *Dec 21, 1995Feb 9, 1999Kimberly-Clark Worldwide, Inc.Ultrasonic liquid flow control apparatus and method
US6020277 *May 10, 1996Feb 1, 2000Kimberly-Clark CorporationPolymeric strands with enhanced tensile strength, nonwoven webs including such strands, and methods for making same
US6053424 *Dec 21, 1995Apr 25, 2000Kimberly-Clark Worldwide, Inc.Apparatus and method for ultrasonically producing a spray of liquid
US6279872 *Aug 12, 1998Aug 28, 2001Deutsches Zentrum Fuer Luft-Und Raumfahrt E.V.Quick-acting valve
US6315215Feb 8, 2000Nov 13, 2001Kimberly-Clark Worldwide, Inc.Apparatus and method for ultrasonically self-cleaning an orifice
US6380264Dec 21, 1995Apr 30, 2002Kimberly-Clark CorporationApparatus and method for emulsifying a pressurized multi-component liquid
US6395216Jan 10, 2000May 28, 2002Kimberly-Clark Worldwide, Inc.Method and apparatus for ultrasonically assisted melt extrusion of fibers
US6450417Sep 18, 2000Sep 17, 2002Kimberly-Clark Worldwide Inc.Ultrasonic liquid fuel injection apparatus and method
US6543700Jul 26, 2001Apr 8, 2003Kimberly-Clark Worldwide, Inc.Ultrasonic unitized fuel injector with ceramic valve body
US6659365Apr 1, 2002Dec 9, 2003Kimberly-Clark Worldwide, Inc.Ultrasonic liquid fuel injection apparatus and method
US6663027Jul 26, 2001Dec 16, 2003Kimberly-Clark Worldwide, Inc.Unitized injector modified for ultrasonically stimulated operation
US6880770Jul 11, 2003Apr 19, 2005Kimberly-Clark Worldwide, Inc.Method of retrofitting an unitized injector for ultrasonically stimulated operation
Classifications
U.S. Classification239/102.2, 239/463, 251/129.14, 239/125
International ClassificationF02M61/16, F23R3/28, F23D11/34, F02M51/06, F02M61/00, F23D11/00, F02M27/08, F02M69/04, F02M27/00
Cooperative ClassificationF23D11/345, F02M69/041, F02M61/162
European ClassificationF23D11/34B, F02M69/04B, F02M61/16C
Legal Events
DateCodeEventDescription
Jun 9, 1983AS02Assignment of assignor's interest
Owner name: EATON CORPORATION, 100 ERIEVIEW PLAZA, CLEVELAND,
Effective date: 19830524
Owner name: PLESSEY COMPANY PLC, THE
Jun 9, 1983ASAssignment
Owner name: EATON CORPORATION, 100 ERIEVIEW PLAZA, CLEVELAND,
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:PLESSEY OVERSEAS LIMITED;REEL/FRAME:004142/0890
Effective date: 19830524
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:PLESSEY COMPANY PLC, THE;REEL/FRAME:004148/0818