[특허]Programmable diesel fuel injector

[미국특허] Programmable diesel fuel injector 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F02M-051/00 F02M-037/00
출원번호	US-0205787 (2011-08-09)
등록번호	US-8683982 (2014-04-01)
발명자 / 주소	Bright, Charles B.
출원인 / 주소	Great Plains Diesel Technologies, L.C.
대리인 / 주소	McKee, Voorhees & Sease, P.L.C.
인용정보	피인용 횟수 : 2 인용 특허 : 38

초록 ▼

A programmable diesel fuel injector that increases frequency response and control precision over desired fuel flow rates throughout each injection event. All valve frequency and motional requirements are met by a compensated direct drive, which is enabled by the durable capability of a rare earth alloy to lengthen in a magnetic field. A continuously variable electrical input waveform is predetermined to result in the desired fuel injection rate shape. A magnetostrictive transducer converts voltage and current into continuously variable force and displacement of a master piston acting upon fuel within a closed chamber. A slave piston responds to the fuel pressure changes within the closed chamber and acts upon the spool of a spool valve to eject fuel.

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1. A fuel injection device for internal combustion engines comprising: a case;a transducer for converting electrical input to mechanical output having a rod, the rod having a compressive preload, the compressive preload provided through fuel pressure;said transducer having a solenoid coil; anda valve in communication with the transducer to provide fuel to an engine combustion chamber wherein the valve vectorially separates transducer forces from pressure induced forces when fuel is supplied to the engine combustion chamber. 2. The device of claim 1 wherein the rod has ends that are parallel to each other and is made of a solid magnetostrictive material with a preferred direction of magnetostrictive response. 3. The device of claim 2 wherein the shape is chosen from the group consisting of cylinder, ellipsoid, parallelipiped and prismatic shapes. 4. The device of claim 1 wherein fuel pressure provides greater than fifteen megapascals of compressive stress on the rod. 5. The device of claim 4 wherein the case has a liquid chamber that traps a substantially constant volume of pressurized liquid when the rod actuates the master piston. 6. The device of claim 1 wherein the valve comprises: a valve body having at least one orifice exiting into an engine combustion chamber;a valve element driven by a slave piston to slide axially between a first position and a second position; anda restoring element that urges the valve element toward the first position. 7. The device of claim 2 where the transducer comprises the rod disposed through a case and a solenoid coil disposed concentrically around the rod and adapted to excite the magnetostrictive material of the rod into mechanical motion. 8. The device of claim 7 wherein the magnetostrictive material comprises a grain oriented polycrystalline rare earth-transition metal magnetostrictive material of the formula Tb.sub.xDy.sub.1-xFe.sub.2-w wherein 0.20<=x<=1.00 and 0<=w<=0.20 wherein the grains of the material have their common principal axes substantially pointed along the growth axis of the material which is within 10.degree. of the .lamda..sub.111 axis. 9. The device of claim 7 wherein the magnetostrictive material is a rare earth-transition metal magnetostrictive material divided by a plurality of joints into an element of discrete magnetostrictive slabs. 10. The device of claim 7 wherein the magnetostrictive material is a rare earth-transition metal magnetostrictive material having a transverse dimension less than one quarter wavelength at the electromechanical resonant frequency of the apparatus. 11. The device of claim 7 wherein the magnetostrictive material is a rare earth-transition metal magnetostrictive material having a length in the direction of magnetostrictive response of no greater than one quarter wavelength at the electromechanical resonant frequency of the apparatus. 12. The device of claim 7 further comprising a magnetic flux return path circuit made from ferromagnetic material. 13. The device of claim 12 wherein the magnetic flux return path circuit surrounds the solenoid coil from one end of the magnetostrictive material to the other. 14. The device of claim 12 wherein permanent magnets are incorporated in the magnetic flux return path circuit. 15. The device of claim 4 wherein the valve has a slave piston that moves in a direction not the same as the master piston. 16. The device of claim 5 wherein the liquid is supplied to and trapped in the chamber by a check valve in fluid communication with the high pressure source. 17. The device of claim 5 wherein the liquid is supplied to and trapped in the chamber by a labyrinthine passage in fluid communication with the high pressure source. 18. The device of claim 6 wherein the restoring element is a spring. 19. The device of claim 1 wherein the rod has ends that are substantially parallel to each other and is made of a solid piezoelectric material with a preferred direction of piezoelectric response. 20. The device of claim 19 wherein the shape is chosen from the group consisting of cylinder, ellipsoid, parallelipiped and prismatic shapes. 21. A fuel injection device for internal combustion engines comprising: a case;a transducer for converting electrical input to mechanical output having a rod, the rod having a compressive preload, the compressive preload provided through fuel pressure; anda valve in communication with the transducer to supply fuel to an engine combustion chamber. 22. A method for injecting fuel into an engine combustion chamber steps comprising: sending an electrical input signal from a control unit to a solenoid coil to excite a rod of magnetostrictive material, the rod having a compressive preload, the compressive preload provided through fuel pressure within the solenoid coil;vectorially separating actuator forces from pressure induced forces with a valve in communication with the transducer; andactuating the valve to inject fuel into an engine combustion chamber. 23. The method of claim 22 wherein the control unit operates in analog fashion. 24. The method of claim 22 wherein the control unit operates in binary fashion. 25. The method of claim 22 wherein the control unit operates in pulse width modulated fashion. 26. The method of claim 22 further comprising the step of axially modulating the valve with a slave piston to any position in between full open and full closed positions. 27. The method of claim 22 wherein the electrical input signal comprises a main current signal with a superposed alternating signal. 28. The method of claim 22 further comprising the step of exciting the solenoid coil with an electrical current that causes magnetic domains of the rod to rotate into alignment before sending the electrical input signal. 29. The method of claim 22 wherein the valve oscillates sinusoidally when actuated.

이 특허에 인용된 특허 (38) 인용/피인용 타임라인 분석

Kappel Andreas,DEX ; Mock Randolf,DEX ; Meixner Hans,DEX ; Hayes Edward-James, Apparatus and method for valve control.
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Itoh Katsuoki,DEX ; Heinz Rudolf,DEX ; Moser Winfried,DEX, Clamping device for a piesoelectric actuator of a fuel injection valve for internal combustion engines.
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C. Edward Morris ; Bjorn Westman SE; Mark S. Cavanagh, Closed nozzle fuel injector with improved controllabilty.
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Mori,Teruo, Contraction type actuator.
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Sch체rz,Willibald, Device for the translation of a displacement of an actuator, in particular for an injection valve.
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Kappel Andreas,DEX ; Mock Randolf,DEX, Electrohydraulic drive.
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Perry Robert Czimmek, Electronic fuel injector actuated by magnetostrictive transduction.
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Suzuki Isao (c/o Hachiuoji Technical Center Nippon Tylan Co. ; Ltd. Ishikawa-cho 2971-8 Hachiouji-shi ; Tokyo JPX), Fluid flow control valve and valve disk.
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Itoh, Katsuoki, Fuel injection nozzle.
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Chadwick Alexander (South Lyon MI) Khair Magdi K. (Birmingham MI) McCombie Jay C. (W. Bloomfield MI), Fuel injection system and control valve for multi-cylinder engines.
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Khair Magdi K. (Birmingham MI) McCombie Jay C. (West Bloomfield MI), Fuel injection system and control valve for multi-cylinder engines.
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Rembold Helmut,DEX ; Haag Gottlob,DEX ; Stutzenberger Heinz,DEX, Fuel injection valve with a piezo-electric or magnetostrictive actuator.
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Cooke,Michael Peter, Fuel injector.
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Hafner Udo,DEX ; Noller Klaus,DEX ; Fuchs Heinz,DEX ; Staacke Albert,DEX, Fuel injector.
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Hoffmann,Guy; Clerx,Frank A, Fuel injector having a separable armature and pintle.
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Crofts John D. ; Cavanagh Mark S. ; Savage Howard S., Fuel injector nozzle assembly with feedback control.
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Crofts, John D.; Truman, III, Arthur C.; Sung, Jung-min C.; Rauznitz, Peter, Fuel injector with feedback control.
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Benson,Donald J.; Rix,David M.; Peters,Lester L.; Venkataraman,Shankar C.; Morris, Jr.,C. Edward, Fuel injector with injection rate control.
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Carroll, III, John T.; Benson, Donald J.; Tarr, Yul J., Fuel injector with injection rate control.
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Rauznitz,Peter; Buchanan,David L.; Peters,Lester L., Fuel injector with piezoelectric actuator preload.
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Peters Lester L. ; Perr Julius P. ; Yen Benjamin M. ; Muntean George L. ; Perr J. Victor ; Crofts John D., Fuel injector with pressure balanced needle valve.
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Kammerer,Werner; Noller,Klaus; Stier,Hubert; Schmieder,Dietmar; Huebel,Michael; Gerschwitz,Thomas; Leitner,Christian, Fuel-injection valve.
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Tarr Yul J., Injection rate shaping nozzle assembly for a fuel injector.
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Czimmek, Perry Robert, Magnetostrictive electronic valve timing actuator.
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Auwaerter Gerhard (Stuttgart DEX) Itoh Katsuoki (Leonberg DEX) Heinz Rudolf (Renningen DEX) Moser Winfried (Ludwigsburg DEX) Franke Christoph (Wolfenbuttel DEX), Metering valve for metering a fluid.
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Schfer Hans-Jrgen (Braunschweig DEX), Metering valve, particularly fuel injection valve.
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Henkel Dietmar (Kopernikusring 50 8340 Neumarkt DEX), Method and apparatus for injecting fuel into a combustion chamber of an air compressing, spontaneous ignition, internal.
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Hayes ; Jr. Edward James, Piezoelectric controlled common rail injector with hydraulic amplification of piezoelectric stroke.
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Rauznitz, Peter; Peters, Lester L.; Crofts, John D.; Meyer, William D., Piezoelectric fuel injection system with rate shape control and method of controlling same.
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Bart Hans U. (Whitehall MI), Piezoelectric fuel injector valve.
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Lindler, Jason E.; Anderson, Eric H., Piezoelectrically actuated single-stage servovalve.
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Carroll, III, John T; Benson, Donald J, Rate shaping fuel injector with limited throttling.
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Blessing,Matthias; Koenig,Gerhard; Krueger,Christian; Preiss,Ruediger; Raab,Alois; Schnabel,Martin, Self-igniting internal combustion engine.
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Yamazaki Hideharu,JPX ; Otaka Akifumi,JPX ; Goto Hiroyuki,JPX, Super magnetostrictive actuator.
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Moses,Robert W.; Fox, legal representative,Christopher L.; Fox, legal representative,Melanie L.; Chattin,Richard L.; Shams,Qamar A.; Fox, deceased,Robert L., System and method for monitoring piezoelectric material performance.
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Hatalsky, Jeffrey F., Transforming video images.
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Bram, Eric M.; Satapathy, Manas R., Variable check stop for micrometering in a fuel injector.
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Bright,Charles B.; Garza,Jon C., Very high speed rate shaping fuel injector.
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이 특허를 인용한 특허 (2) 인용/피인용 타임라인 분석

Beier, Marco; Rettich, Andreas; Pauer, Thomas; Ricco, Mario, Actuator.
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Bartsch, Andreas; Zieher, Rene; Meyer-Salfeld, Steffen, Method for operating a valve.
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[미국특허] Programmable diesel fuel injector 원문보기

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[미국특허] Programmable diesel fuel injector 원문보기

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이 특허에 인용된 특허 (38) 인용/피인용 타임라인 분석

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