[특허]Fuel injector check valve

Fuel injector check valve 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F16K-015/00
출원번호	US-0728752 (1996-10-11)
발명자 / 주소	Buescher Alfred J.
대리인 / 주소	Pearne, Gordon, McCoy & Granger LLP
인용정보	피인용 횟수 : 48 인용 특허 : 0

초록

A diesel engine unit injector is combined with a check valve having fuel delivery passages (notches or slots) with radially-inner edges that are concave in shape whereby areas of relatively high-velocity interfacial flow between the check valve disc and the surface on which it closes are minimized.

대표청구항 ▼

[ What is claimed is:] [1.] In a high output high pressure diesel unit injector of the EMD type having an injector nozzle, a plunger bushing, a check valve cage, a check valve within the cage, and a spacer interposed between the bushing and cage, said check valve comprising a disc with upper and lower parallel flat disc surfaces parallel to each other, said check valve having fuel delivery passages opening therethrough and annularly spaced at equal intervals around its annular extent, said fuel delivery passages being formed as slot or notch openings through the parallel flat surfaces, said cage and check valve defining a diametral clearance between the check valve outside diameter and cage inside diameter for free movement of the check valve, the spacer having a flat surface to serve as the check valve seat to prevent fuel from leaking back into the plunger bushing when the check valve is seated against the spacer flat surface, the spacer having a central inlet hole through which fuel flows from the plunger bushing bore, the valve having a sealing width defined by the radial distance from said inlet hole to the closest points on said fuel delivery passages when the valve is centered over the inlet hole, the fuel flowing from said central inlet hole generally radially outward and between said spacer flat surface and said disc upper flat surface, said flow between said latter two flat surfaces being interfacial with respect to the faces presented by said latter two flat surfaces, fuel then flowing non-interfacially down through said fuel delivery passages, the check valve cage having an internal shoulder at the outer edge of the check valve to limit the check valve lift, said check valve cage also having a fuel chamber below said shoulder, said fuel chamber receiving fuel which has flowed through said fuel delivery passages, said shoulder being sufficiently narrow to permit said flow of fuel through said fuel delivery passages to said fuel chamber, the valve cage having outlet passages connecting said fuel chamber with downstream passages leading to conduits for delivering fuel to the injector nozzle, said interfacial flow of said fuel including flow along relatively short paths of interfacial flow at relatively high flow velocities and through-put rates as compared to flow along any remaining paths included in said interfacial flow, said short paths together sweeping out areas of relatively high velocity interfacial flow, the improvement wherein the radially innermost edges of said fuel delivery passages themselves, as distinguished from the edges of the solid discs in which they are formed, are concave along a major part of their annular extents.

이 특허를 인용한 특허 (48)

McAlister, Roy Edward, Acoustically actuated flow valve assembly including a plurality of reed valves.
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McAlister, Roy E., Adaptive control system for fuel injectors and igniters.
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McAlister, Roy Edward, Adaptive control system for fuel injectors and igniters.
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McAlister, Roy E., Ceramic insulator and methods of use and manufacture thereof.
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McAlister, Roy Edward, Chemical fuel conditioning and activation.
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Teerman, Richard F.; Jones, Jerry A., Electronic unit injector.
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Schuricht, Scott R., End of injection pressure reduction.
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McAlister, Roy Edward, Fuel injection systems with enhanced corona burst.
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McAlister, Roy Edward, Fuel injection systems with enhanced corona burst.
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McAlister, Roy Edward, Fuel injection systems with enhanced corona burst.
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McAlister, Roy Edward, Fuel injection systems with enhanced thrust.
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McAlister, Roy Edward, Fuel injector actuator assemblies and associated methods of use and manufacture.
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Augustin, Ulrich, Fuel injector and method for controlling fuel flow.
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McAlister, Roy Edward, Fuel injector assemblies having acoustical force modifiers and associated methods of use and manufacture.
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McAlister, Roy Edward, Fuel injector assemblies having acoustical force modifiers and associated methods of use and manufacture.
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Schlairet,Edward A., Fuel injector check valve.
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Ayanji, Sudhindra K.; Tian, Ye, Fuel injector with pressurized fuel reverse flow check valve.
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McAlister, Roy Edward; Hoekstra, Kraig; Kemmet, Ryan; Grottenthaler, David; Wright, Dustin, High pressure direct injected gaseous fuel system and retrofit kit incorporating the same.
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McAlister, Roy Edward, Injector-igniter with fuel characterization.
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McAlister, Roy Edward, Injector-igniter with fuel characterization.
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McAlister, Roy Edward, Injector-igniter with thermochemical regeneration.
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McAlister, Roy Edward, Injector-igniters with variable gap electrode.
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McAlister, Roy Edward; Larsen, Melvin James, Integrated fuel injector igniters configured to inject multiple fuels and/or coolants and associated methods of use and manufacture.
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McAlister, Roy E., Integrated fuel injector igniters having force generating assemblies for injecting and igniting fuel and associated methods of use and manufacture.
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McAlister, Roy Edward, Integrated fuel injector igniters having force generating assemblies for injecting and igniting fuel and associated methods of use and manufacture.
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McAlister, Roy E., Integrated fuel injector igniters suitable for large engine applications and associated methods of use and manufacture.
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McAlister, Roy E., Integrated fuel injector igniters suitable for large engine applications and associated methods of use and manufacture.
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McAlister, Roy Edward, Integrated fuel injector igniters suitable for large engine applications and associated methods of use and manufacture.
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McAlister, Roy E., Integrated fuel injector igniters with conductive cable assemblies.
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McAlister, Roy E., Integrated fuel injectors and igniters and associated methods of use and manufacture.
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McAlister, Roy E., Integrated fuel injectors and igniters and associated methods of use and manufacture.
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McAlister, Roy Edward, Integrated fuel injectors and igniters and associated methods of use and manufacture.
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McAlister, Roy Edward, Method and apparatus for providing adaptive swirl injection and ignition.
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McAlister, Roy E., Method and system of thermochemical regeneration to provide oxygenated fuel, for example, with fuel-cooled fuel injectors.
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McAlister, Roy Edward; Larsen, Melvin James, Methods and systems for adaptively cooling combustion chambers in engines.
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McAlister, Roy E., Methods and systems for reducing the formation of oxides of nitrogen during combustion in engines.
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McAlister, Roy Edward, Methods and systems for reducing the formation of oxides of nitrogen during combustion of engines.
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McAlister, Roy Edward, Motion modifiers for fuel injection systems.
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McAlister, Roy, Multifuel storage, metering and ignition system.
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McAlister, Roy Edward, Multifuel storage, metering and ignition system.
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McAlister, Roy E., Shaping a fuel charge in a combustion chamber with multiple drivers and/or ionization control.
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McAlister, Roy E., Shaping a fuel charge in a combustion chamber with multiple drivers and/or ionization control.
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McAlister, Roy Edward, Shaping a fuel charge in a combustion chamber with multiple drivers and/or ionization control.
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McAlister, Roy Edward; Larsen, Melvin James, Systems and methods for improved engine cooling and energy generation.
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McAlister, Roy Edward; Grottenthaler, David, Systems and methods for providing motion amplification and compensation by fluid displacement.
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McAlister, Roy Edward, Systems and methods for utilizing alcohol fuels.
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McAlister, Roy Edward, Systems, methods, and devices with enhanced lorentz thrust.
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McAlister, Roy Edward; Larsen, Melvin James, Torque multiplier engines.
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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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Fuel injector check valve 원문보기

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Fuel injector check valve 원문보기

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이 특허를 인용한 특허 (48)

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