[특허]Positive-displacement-metering, electro-hydraulic fuel injection system

Positive-displacement-metering, electro-hydraulic fuel injection system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F02M-037/04 F02M-047/02 F16K-015/14
출원번호	US-0650611 (1996-05-20)
발명자 / 주소	Lowi Jr. Alvin
대리인 / 주소	Canter
인용정보	피인용 횟수 : 22 인용 특허 : 0

초록 ▼

An improved, full-authority, digital-electronic-controlled cylinder fuel injection system for internal combustion engines is conceived that utilizes positive displacement metering and electrohydraulic actuation with pressure amplification, positive feedback control and self cooling. The injectors operate from a relatively low pressure common rail fuel supply that may be fed by either pumping or from a pressurized fuel tank. The injectors incorporate self cooling passages that enable continuous operation independent of engine cooling, if any. The injectors comprise a stepped piston freely oscillating in a cylindrical housing providing an actuation chamber at the large end and a metering cup and injection nozzles at the other. A third chamber is provided in between for handling a degree of piston leakage and ullage. Charging, metering, timing and injection functions are controlled by a cartridge-type, 3-way, electrically-actuated valve that may be manifolded with the injector as a unit or mounted separately and connected externally. An outward-opening, variable-area injector nozzle is used for improved injection quality and turndown characteristics with a reduced level and range of injection pressures.

대표청구항 ▼

[ What is claimed is:] [1.] An electro-hydraulic fuel injector system comprising:a fuel injector housing comprising a first housing portion including a first chamber having a head space and a second housing portion including a second chamber having a floor;a piston closely fitted within said housing and adapted to freely oscillate between said head space and said floor and adapted to mate intimately against said floor;a first housing port in fluid communication with said head space;a fluid passageway within said piston, said fluid passageway in fluid communication with said second chamber;a second housing port in said second housing portion, said second housing port in fluid communication with said piston fluid passageway and said second chamber;a check valve within said piston fluid passageway, adapted to permit fluid to flow through said piston fluid passageway and into said second chamber and to prevent fluid from flowing from said second chamber back into said piston fluid passageway;a nozzle fitted within said second chamber and having an inner face forming said second chamber floor and adapted to open under fluid pressure to permit fluid to flow out of said second chamber;hydraulic means for oscillating said piston; andmeans for controlling the flow of fluid through said first housing port into said first chamber.

이 특허를 인용한 특허 (22)

Feucht Dennis D. ; Nippert Andrew H. ; Kinnear Douglas J. ; Arulraja Mylvagaganam, Actuator which uses fluctuating pressure from an oil pump that powers a hydraulically actuated fuel injector.
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Augustin,Ulrich, Control valve for fuel injector and method of use.
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Mullen Matthew C., Cooled LPG fuel rail.
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Jean-Philippe Vaslin FR; Alain Roy FR, Displacement sensors for servo-control actuators.
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Gibson, Dennis H.; Michels, Ryan P., Electro-hydraulic actuator for a hydraulic pump.
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Coldren, Dana R.; Forck, Glen F.; Waterfield, L. Glenn, Electronically-controlled fuel injector.
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Forck, Glen F.; Waterfield, L. Glenn, Electronically-controlled fuel injector.
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Fraenkle, Gerhard; Schwarz, Volker, Fuel injection system for an internal combustion engine.
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Morris, James Paul; Lysinger, Forrest Ross; Matas, Scott; Gundrum, William, Fuel pump for engine.
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Harwood, Michael R., High pressure piezoelectric fuel injector.
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Harwood, Michael R., High pressure piezoelectric fuel injector.
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Hlousek,Jaroslav; Guggenbichler,Franz, Injection nozzle for internal combustion machines.
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Popadiuc, Ovidiu Petru; Norris, Nicholas Denman, Integrated gas nozzle check valve and engine using same.
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Ciampolini,Franco, Internal combustion engine hydraulic fuel pump.
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Baker,S. Michael; Perr,Victor J.; Free,P. Douglas, Liquid cooled fuel injection valve and method of operating a liquid cooled fuel injection valve.
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Blass, James R.; Gibson, Dennis H.; Michels, Ryan P., Method and apparatus for controlling a fluid actuated system.
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Rodriguez-Amaya, Nestor; Ruthardt, Siegfried; Rapp, Holger; Stoecklein, Wolfgang; Berghaenel, Bernd; Beier, Marco, Method for operating a magnetic switching element.
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Grabher Reinhard,ATX ; Flauger Thomas,ATX ; Feierle Karl-Heinz,ATX, Process for determining the fuel consumption or the operating status of combustion engines.
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Stockner, Alan R.; Shafer, Scott F., Pumping element for a fluid pump and method.
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Nist, Lance E., Remote metering for gaseous fuels and oxidizers.
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Tanaka, Masamichi; Samo, Junichi; Hattori, Satoshi; Ogawa, Tohru, Start assister of fuel injection pump.
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Lowi, Jr., Alvin; Ferrenberg, Allan J., Stationary regenerator, regenerated, reciprocating engine.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Positive-displacement-metering, electro-hydraulic fuel injection system 원문보기

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Positive-displacement-metering, electro-hydraulic fuel injection system 원문보기

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이 특허를 인용한 특허 (22)

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