[특허]Variable discharge high pressure pump

Variable discharge high pressure pump 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F02M-037/04
출원번호	US-0699589 (1991-05-14)
우선권정보	JP-0231349 (1987-09-16); JP-0256826 (1987-10-12); JP-0256827 (1987-10-12)
발명자 / 주소	Kumano Mikio (Anjo JPX) Kondoh Shigeyuki (Aichi JPX)
출원인 / 주소	Nippondenso Co., Ltd. (Kariya JPX 03)
인용정보	피인용 횟수 : 64 인용 특허 : 0

초록 ▼

A variable discharge high pressure pump for pumping a fuel into a common rail of a common rail type fuel injection system has a plunger reciprocable in a cylinder bore and a pumping chamber defined between and end face of the plunger and the inner peripheral surface of the cylinder bore. A solenoid valve has a valve member movable into an open position in which the valve member is moved out of engagement with an associated valve seat into the pumping chamber when the solenoid valve is deenergized. When the solenoid valve is energized, the valve member is moved into a closed position in which the fuel pressure in the pumping chamber acts on the valve member to urge the same into engagement with the valve seat. The plunger is of a simple cylinderical structure free from any lead formed therein.

대표청구항 ▼

A variable discharge high pressure pump for a fuel injection system of an engine, said high pressure pump discharging fuel into a common rail for accumulating a fuel pressure therein, said high pressure pump including: a cylinder having formed therein at least one cylinder a plunger reciprocally disposed in said cylinder bore, and having an end face cooperating with an inner peripheral surface of said cylinder bore to define a pumping chamber, having a forward stroking movement starting at a starting point, extending through an initial stage, through a later stage and then through a final stage which extends to an end of the movement where the plunger is as far forward as possible; a cam driven by the engine to reciprocally drive said plunger; a low pressure passage providing the only communication path between said pumping chamber and a low pressure side of said pump; a valve including a valve member which opens and closes said low pressure passage, said valve member opening said low pressure passage between the starting point until a period extending from a predetermined time point after the starting point of the forward stroking movement of said plunger, and closing said low pressure passage to block all communication between the pumping chamber and the low pressure side of the pump, through the later stage of the forward stroking movement of said plunger, at least until the end of the forward stroking movement of said plunger, to thereby block any flow of fuel from said pumping chamber through said low pressure passage to said low pressure side of said pump during said later stage of the forward stroking movement of said plunger, said predetermined time point being adjustable to control a quantity of fuel discharged from said pumping chamber; said cam having a cam profile shaped to provide a non-uniform speed characteristic such that the cam speed is low in the initial stage of the forward stroking movement of said plunger and is higher at the later stage of the forward stroking movement of said plunger.

이 특허를 인용한 특허 (64)

Kohketsu, Susumu; Tanabe, Keiki, Accumulator type fuel injection system.
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Susumu Kohketsu JP; Keiki Tanabe JP, Accumulator type fuel injection system.
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John T. Carroll, III ; Donald J. Benson ; Yul J. Tarr IN; Laszlo D. Tikk ; Taner Tuken, Cyclic pressurization including plural pressurization units interconnected for energy storage and recovery.
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Kato, Kensho, Device for detecting cam top position of high pressure pump.
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Cooper, Jared Klineman; Eldredge, David Allen; Golden, Samuel William, Distributed energy management system and method for a vehicle system.
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Hasegawa, Kazuya; Matayoshi, Yutaka, Engine fuel delivery system.
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Wago, Toshimichi; Gambier, Philippe; Pessin, Jean-Louis; Luharuka, Rajesh, Externally assisted valve for a positive displacement pump.
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Tikk, Laszlo D.; Tarr, Yul J.; Benson, Donald J.; Carroll, III, John T.; Morris, Ed, Fluid manifold connector and fluid manifold assembly.
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Ogawa,Hisao, Fuel injection apparatus for engines.
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Susumu Takahashi JP; Masaaki Nishitou JP, Fuel injection control device for engines.
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Moser Franz X.,DEX, Fuel injection device for auto-ignition internal combustion engines.
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Klinger Horst,DEX ; Kuhn Uwe,DEX ; Rosenau Bernd,DEX ; Traub Peter,DEX ; Loesch Gerd,DEX ; Soccol Sandro,DEX, Fuel injector.
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Isozumi Shuzo (Tokyo JPX) Morikaku Hideki (Tokyo JPX), Fuel injector system.
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Morishita Akira,JPX ; Isozumi Shuzo,JPX ; Konishi Keiichi,JPX, Fuel injector system.
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Kikutani,Takashi; Endo,Hisashi, Fuel pressure controller.
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Wang,Xiumei, Fuel supply device of an internal combustion engine.
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Yoshimura, Tetsuya, Fuel supply pump.
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Rembold, Helmut; Schmidt, Bruno; Krieg, Dietmar; Schumacher, Mathias; Mueller, Uwe, High-pressure fuel pump with variable delivery quantity.
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Kojima, Susumu, High-pressure fuel supply system of an internal combustion engine and control method thereof.
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Kojima, Susumu, High-pressure fuel supply system of internal combustion engine.
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Spinnler, Fritz; Zanetti, Claudio, High-pressure injection system.
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Spinnler Fritz,CHX ; Zanetti Claudio,CHX, High-pressure injection system with common rail.
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Bartley,Bradley E.; Shafer,Scott F.; Tian,Steven Y.; Trubnikov,Timur T.; Jones,Christopher R.; Algousi,Haithem, High-pressure pump.
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Anderson Michael D. ; Friede Matthew D. ; Gibson Dennis H., Hydraulically-actuated system having a variable delivery fixed displacement pump.
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Thomas Eric D. ; Weisman ; II S. Miller, Method and system for controlling fuel pressure in a common rail fuel injection system.
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Van Himme, Luc; Vermolen, Koen; Meekers, Rudi, Method for detecting a closing time point of a valve having a coil drive, and valve.
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Wolber, Jens; Frenz, Thomas; Hinn, Karsten; Hollmann, Timm; Wiedmann, Christian; Smetana, Stefan; Nack, Laurent, Method for operating an internal combustion engine.
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Niethammer, Bernd, Method of reducing pressure peaks in a fuel injector.
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Niethammer, Bernd, Multiple stage pump with multiple external control valves.
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Niethammer,Bernd, Multiple stage pump with multiple external control valves.
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Mueller, Otto; Woesten, Georg; Schneck, Juergen, Pump, in particular a high-pressure fuel pump.
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Reilly, David M., Pumping devices, systems and methods for use with medical fluids including compensation for variations in pressure or flow rate.
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Reilly, David M., Pumping devices, systems including multiple pistons and methods for use with medical fluids.
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Shafer, Scott; Zhang, Jianhua; Ibrahim, Daniel, Synchronizing common rail pumping events with engine operation.
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Thomas Eric D., System and method for controlling fuel injections.
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Gallagher, Shawn Michael; Primus, Roy; Tamma, Bhaskar; Topinka, Jennifer, System and method for controlling the fuel injection event in an internal combustion engine.
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Kumar, Ajith Kuttannair; Eldredge, David; Ballesty, Daniel; Cooper, Jared Klineman; Roney, Christopher; Houpt, Paul; Mathe, Stephen; Julich, Paul; Kisak, Jeffrey; Shaffer, Glenn; Nelson, Scott; Daum, Wolfgang, System and method for vehicle control.
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Thompson Scott A. (Columbus IN) Daiker Jeffrey (Columbus IN) Stavnheim Jonathon A. (Columbus IN) Meyer William (Columbus IN) Fridholm Greg (Columbus IN) Sang Zhong (Columbus IN) Studtman George (Mt. , System and methods for electronic control of an accumulator fuel system.
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Otsubo, Tom; Daum, Wolfgang; Stull, Craig Alan; Hann, Gregory; Danner, Phillip, System, method and computer software code for determining a mission plan for a powered system using signal aspect information.
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Kumar, Ajith Kuttannair; Shaffer, Glenn Robert; Houpt, Paul Kenneth; Movsichoff, Bernardo Adrian; Chan, David So Keung; Eker, Sukru Alper, Trip optimization system and method for a train.
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Shafer, Scott F.; Jones, Christopher R., Valve assembly.
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Onishi Yoshihiko,JPX ; Miyajima Masayasu,JPX, Variable delivery fuel supply device.
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Onishi, Yoshihiko; Ojima, Kouichi, Variable delivery fuel supply device.
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Ilija Djordjevic, Variable output pump for gasoline direct 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

Variable discharge high pressure pump 원문보기

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Variable discharge high pressure pump 원문보기

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이 특허를 인용한 특허 (64)

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