[특허]Individual timing and injection fuel metering system

Individual timing and injection fuel metering system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F02M-057/02 F02M-059/36
출원번호	US-0208365 (1994-03-10)
발명자 / 주소	Buchanon David L. (Westport IN) Peters Lester L. (Columbus IN) Perr Julius P. (Columbus IN) Tarr Yul J. (Columbus IN)
출원인 / 주소	Cummins Engine Company, Inc. (Columbus IN 02)
인용정보	피인용 횟수 : 52 인용 특허 : 0

초록 ▼

A metering system is provided which controls the amount of fuel supplied to the combustion chambers of a multi-cylinder internal combustion engine comprising a fuel pump for supplying fuel at low pressure to a first and a second group of unit fuel injectors, a first solenoid-operated fuel control valve controlling the flow of fuel to the first set of injectors and a second solenoid-operated fuel control valve controlling the flow of fuel to the second set of injectors. The system may also include first and second solenoid-operated timing fluid control valves associated with the first and the second group of injectors, respectively. The injectors are capable of being in the fuel receiving mode, establishing a metering period, and the timing receiving mode, establishing a timing period, at the same time to increase the amount of time available for metering both timing fluid and fuel. By grouping the various injectors based on the order of injection so that the injectors from each group are placed in the injection mode in spaced periods throughout each cycle of the engine, e.g. injectors from other groups injecting in the period of time between each injection mode, the system can be designed to permit longer metering and timing periods.

대표청구항 ▼

A metering system for metering and timing of fuel injection into the combustion chambers of a multi-cylinder internal combustion engine, comprising: a fluid supply means for supplying fuel and timing fluid at a low supply pressure, said fluid supply means including a timing fluid common rail and a fuel common rail; one or more unit injectors positioned adjacent said common rails for receiving fuel at the low supply pressure and for injecting the fuel at relatively high pressure into respective combustion chambers of the engine, each of said one or more injectors including an injector body containing an injector cavity, a fluid timing circuit communicating with said timing fluid common rail, a fuel metering circuit communicating with said fuel common rail, and an injection orifice formed in one end of said injector body and further including a plunger means mounted for reciprocal movement in said injector cavity, said plunger means including inner and outer plunger sections, a variable volume timing chamber being formed in said injector cavity between said inner and outer plunger sections and a variable volume fuel metering chamber being formed in said injector cavity between said inner plunger section and an end of the injector cavity; an electromagnetic timing fluid control valve positioned in said timing fluid common rail for controlling the flow of fuel to said timing chamber, said electromagnetic timing fluid control valve being movable between an open position wherein timing fluid may flow therethrough to said timing chamber and a closed position wherein fluid is blocked from flowing therethrough to said timing chamber; and an electromagnetic fuel control valve positioned in said fuel common rail for controlling the flow of fuel to said metering chamber, said electromagnetic fuel control valve being movable between an open position wherein fuel may flow therethrough to said metering chamber and a closed position wherein fuel is blocked from flowing therethrough to said metering chamber, wherein said electromagnetic fuel control valve and said electromagnetic timing fluid control valve are each movable from said closed position to said open position and from said open position to said closed position to define a fuel metering event and a timing fluid metering event, respectively, during which a predetermined quantity of fuel and timing fluid, respectively, are metered into said metering chamber and said timing chamber, respectively.

이 특허를 인용한 특허 (52)

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Chenanda,Cariappa M.; Buchanan,David L.; Peters,Lester L., Fuel injector having a cooled lower nozzle body.
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Hickey Daniel K. ; Vetters Daniel K. ; Varney Bruce E. ; Kiss Tibor, Fuel injector with isolated spring chamber.
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Shafer, Scott F.; Wang, Lifeng, Fuel pumping system and method.
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Shafer,Scott F.; Wang,Lifeng, Fuel pumping system and method.
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Michaud, Michael; Kruse, Geoffrey A., Infusion pump system with disposable cartridge having pressure venting and pressure feedback.
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Verhoef, Erik T.; DiPerna, Paul M.; Rosinko, Mike; Williamson, Mark; Kruse, Geoffrey A.; Ulrich, Thomas R.; Lamb, Phil; Saint, Sean; Michaud, Michael; Trevaskis, William, Infusion pump system with disposable cartridge having pressure venting and pressure feedback.
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Tarr Yul J. ; Carroll ; III John T. ; Benson Donald J., Low leakage plunger and barrel assembly for high pressure fluid system.
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Puckett, Daniel Reese; Yang, Yanli, Method and apparatus for determining correct installation for gear-driven fuel pump on a fuel injected IC engine.
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Gibson,Dennis H., Multi-source fuel system for variable pressure injection.
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Gibson,Dennis H.; Sommars,Mark F.; Sun,Jinhui, Multi-source fuel system for variable pressure injection.
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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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연합인증

Individual timing and injection fuel metering system 원문보기

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Individual timing and injection fuel metering system 원문보기

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이 특허를 인용한 특허 (52)

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