[특허]Fuel injection nozzle

[미국특허] Fuel injection nozzle 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F02M-047/02
출원번호	US-0711838 (1985-03-14)
우선권정보	JP-0049664 (1984-03-15)
발명자 / 주소	Kato Masaaki (Kariya JPX) Nakatsuka Hirotaka (Kariya JPX) Tojo Shigeki (Mie JPX) Arai Kazuyoshi (Toyota JPX)
출원인 / 주소	Nippondenso Co., Ltd. (Kariya JPX 03)
인용정보	피인용 횟수 : 37 인용 특허 : 6

초록 ▼

A fuel injection nozzle of the present invention has an accumulating chamber in a body in which high pressure fuel fed from the fuel injection pump is stored using a non-return valve. A needle valve is arranged in the body to inject the fuel in the accumulating chamber. A nozzle needle of the needle valve and a valve member are arranged coaxially and in series with each other. Those end portions of the nozzle needle and valve member which are adjacent to each other are slidably and liquid-sealingly fitted together to define a damping chamber between the valve member and the nozzle needle. Further, a damping plunger is coaxially fitted into the valve member. A passage which connects the damping chamber with the side of the fuel injection pump is coaxially formed in the damping plunger and has a reduced area.

대표청구항 ▼

A fuel injection nozzle which is adapted to be connected to a fuel injection pump and which serves to inject fuel into a combustion chamber in an internal combustion engine, comprising: a body in which a suction passage and an accumulating chamber are defined, the suction passage being adapted to be connected with a fuel injection pump and the accumulating chamber being connected with the suction passage; a non-return valve means for allowing the fuel to flow from the suction passage to the accumulating chamber but prohibiting the fuel from flowing from the accumulating chamber to the suction passage, thereby storing the fuel in the accumulating chamber, the fuel being supplied from a fuel injection pump and having a certain pressure and amount, and the non-return valve means including a valve nember which is arranged in the accumulating chamber, is movable along the axis of the body and is urged, with a predetermined force, in a direction for closing the connection between the suction passage and the accumulating chamber, a connector recess being formed at one end of the valve member that faces the suction passage, the connector recess communicating with the suction passage even when the connection is closed; a needle valve means for injecting the fuel stored in the accumulating chamber into a combustion chamber in an engine, the needle valve means including a nozzle needle arranged coaxially and in series with the valve member with end portions thereof being adjacent, the nozzle needle being urged in the opposite direction to the valve member, one of the adjacent end portions of the valve member and the nozzle needle being slidably and liquid-tightly fitted into the other to define therein a damping chamber; a damping plunger coaxially fitted into the valve member in the manner that the damping plunger is urged toward the nozzle needle and has one end protruding into the damping chamber and engageable by the nozzle needle, the damping plunger including a through hole for communicating the damping chamber with the connector recess; and throttle means disposed in the through hole in the damping plunger, for restricting the fuel flow between the damping chamber and the connector recess.

이 특허에 인용된 특허 (6) 인용/피인용 타임라인 분석

Akagi Jiro (Oyama JPX), Accumulator type fuel injection apparatus.
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Bader ; Jr. ; Ernest ; Deckard ; John I. ; Kuiper ; Dan B., Electromagnetic unit fuel injector.
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Akagi Jiro (Oyama JPX), Fuel injection nozzle and holder assembly for internal combustion engines.
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Akagi, Jiro, Fuel injection nozzle assembly.
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Akagi Jiro (Oyama JPX), Fuel injection valve assembly for internal combustion engines.
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Edo Teruo (Oyama JPX), Fuel injector.
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이 특허를 인용한 특허 (37) 인용/피인용 타임라인 분석

Sturman Oded E., Air-fuel module adapted for an internal combustion engine.
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Sturman Oded E., Air-fuel module adapted for an internal combustion engine.
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C. Edward Morris ; Bjorn Westman SE; Mark S. Cavanagh, Closed nozzle fuel injector with improved controllabilty.
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Wang,Yongxin; Tian,Ye; Knapp,Norman D.; Wiemken,Norval J., Common rail fuel injector.
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Hlousek, Jaroslaw, Common rail injector.
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Jett Bryan Thomas ; Spoolstra Gregg R., Control valve assembly for pumps and injectors.
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Teerman Richard F. ; Steele Thomas ; Czarnecki Philip James, Control valve assembly for pumps and injectors.
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Sturman, Oded Eddie, Digital fuel injector, injection and hydraulic valve actuation module and engine and high pressure pump methods and apparatus.
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Sturman, Oded Eddie, Digital fuel injector, injection and hydraulic valve actuation module and engine and high pressure pump methods and apparatus.
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Coldren Dana R. ; Schneider Marvin P. ; Timms Colin T.,GBX, Electronic fuel injector with internal single-pole solenoid and center flow post.
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Nozawa Hideaki,JPX, Exhaust gas purification system in combustion engine.
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Boehland, Peter; Nentwig, Godehard, Fuel injection system for an internal combustion engine.
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Ruthardt, Siegfried, Fuel injection valve.
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Kelly William W. (Granby CT), Fuel injector method and apparatus.
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Kelly William W. (Granby CT), Fuel injector method and apparatus.
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Noyce Stephen Anthony,GBX ; Hardy Martin Paul,GBX, Fuel injector with damping means.
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Sturman, Oded Eddie, Fuel injectors with intensified fuel storage and methods of operating an engine therewith.
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Straub Robert D. ; Faupel Werner, Fuel pump control valve assembly.
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Sturman Oded E., High speed fuel injector.
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Trubnikov, Timur T., High-pressure pump or injector plug or guide with decoupled sealing land.
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Kelly William W. (Granby CT), Hole type fuel injector and injection method.
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Kelly William W. (Granby CT), Hole type fuel injector and injection method.
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Sturman Oded E., Hydraulically driven springless fuel injector.
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Tarr Yul J., Injection rate shaping nozzle assembly for a fuel injector.
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Melzer, Markus; Boltz, Joachim, Injector for a fuel injection system.
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Sturman Oded E., Intensified fuel injector having a lateral drain passage.
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Coldren, Dana R.; Funke, Steven J.; Donaldson, George E., Method of reducing noise in a mechanically actuated fuel injection system and engine using same.
상세보기
Sturman, Oded Eddie, Methods of operation of fuel injectors with intensified fuel storage.
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Sturman,Oded E., Multi-stage intensifiers adapted for pressurized fluid injectors.
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Sturman, Oded Eddie, Multiple intensifier injectors with positive needle control and methods of injection.
상세보기
Sturman, Oded Eddie, Multiple intensifier injectors with positive needle control and methods of injection.
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Fujita, Mahoro; Breitbach, Hermann; Nishimura, Terukazu; Minato, Akihiko; Takase, Shigehisa, Needle lift damper device of injector for fuel injection and needle lift damping method.
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Magel, Hans Christoph, Pressure-boosted fuel injection device comprising an internal control line.
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Boecking, Friedrich, Pressure-controlled injector with force-balancing capacity.
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Gregg R. Spoolstra ; Robert D. Straub, Pump system with high pressure restriction.
상세보기
Spoolstra, Gregg R.; Straub, Robert D., Pump system with high pressure restriction.
상세보기
Trocki, Marian; Benson, Donald J.; Rauznitz, Tamas; Subbaihaannadurai, Vijaygandeeban; Sahini, Deepak, Restrictive flow passage in common rail injectors.
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[미국특허] Fuel injection nozzle 원문보기

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[미국특허] Fuel injection nozzle 원문보기

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