[특허]Injection rate shaping nozzle assembly for a fuel injector

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B05B-009/00 F02M-047/02
출원번호	US-0822718 (1997-03-24)
발명자 / 주소	Tarr Yul J.
출원인 / 주소	Cummins Engine Company, Inc.
대리인 / 주소	Sixbey, Friedman, Leedom & FergusonLeedom, Jr.
인용정보	피인용 횟수 : 48 인용 특허 : 19

초록 ▼

An improved nozzle assembly for servo-controlled fuel injectors is provided which includes a needle valve control device including a rate shaping control device for effectively producing a predetermined time varying change in the flow rate of fuel injected into the combustion chamber during an injec

An improved nozzle assembly for servo-controlled fuel injectors is provided which includes a needle valve control device including a rate shaping control device for effectively producing a predetermined time varying change in the flow rate of fuel injected into the combustion chamber during an injection event so as to reduce emissions. The rate shaping control device includes an injection control valve positioned along a drain circuit connected to a control volume positioned at one end of the needle valve element. The injection control valve includes an actuator for controlling the flow of fuel through the drain circuit to variably control the rate of movement of the needle valve element between the open and closed positions so as to provide the desired shaping to the flow rate of fuel into the combustion chamber. The injection control valve may include a control valve element positioned in the control volume adjacent the needle valve element for cooperating with the needle valve element to control the drain flow of fuel through the drain circuit during the injection event. The needle valve element may include a valve surface wherein positioning of the control valve member relative to the valve surface controls drain flow through the drain circuit. The valve surface may be either a flat valve surface or a conically shaped surface for positive abutment by the control valve member, or alternatively, the needle valve element and the control valve member may be of the spool-type.

대표청구항 ▼

[ I claim:] [1.] A closed nozzle injector for injecting fuel at high pressure into the combustion chamber of an engine, comprising:an injector body containing an injector cavity and an injector orifice communicating with one end of said injector cavity to discharge fuel into the combustion chamber,

[ I claim:] [1.] A closed nozzle injector for injecting fuel at high pressure into the combustion chamber of an engine, comprising:an injector body containing an injector cavity and an injector orifice communicating with one end of said injector cavity to discharge fuel into the combustion chamber, said injector body including a fuel transfer circuit for transferring supply fuel to said injector orifice;a nozzle valve element positioned in one end of said injector cavity adjacent said injector orifice, said nozzle valve element movable between an open position in which fuel may flow from said fuel transfer circuit through said injector orifice into the combustion chamber and a closed position in which fuel flow through said injector orifice is blocked, movement of said nozzle valve element from said closed position to said open position and from said open position to said closed position defining an injection event during which fuel may flow through said injector orifice into the combustion chamber;a needle valve control means for moving said needle valve element between said open and said closed positions, said needle valve control means including a control volume positioned adjacent an outer end of said needle valve element, a control volume charge circuit for supplying fuel from said fuel transfer circuit to said control volume, a drain circuit for draining fuel from said control volume to a low pressure drain, and a rate shaping control means for producing a predetermined time varying change in the flow rate of fuel injected into the combustion chamber during said injection event, said rate shaping control means including an injection control valve positioned along said drain circuit for controlling the flow of fuel through said drain circuit to variably control the rate of movement of said needle valve element between said open and said closed positions, said injection control valve operable to create a low injection flow rate through said injector orifice followed by a high injection flow rate greater than said low injection flow rate during said injection event, said injection control valve including a reciprocally mounted control valve member and an actuator for selectively moving said control valve member relative to said needle valve element, said actuator capable of moving said control valve member at a predetermined variable rate to create said low injection flow rate and said high injection flow rate.

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이 특허에 인용된 특허 (19) 인용/피인용 타임라인 분석

Iwanaga Takashi (Toyohashi JPX), Accumulator fuel injection apparatus.
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Crowley Patrick J. (Grand Rapids MI) Hilsbos Richard L. (Bellevue MI) Wieland Harold L. (Jenison MI) Straub Robert D. (Lowell MI) Teerman Richard F. (Wyoming MI) Timmer Robert C. (Grandville MI), Common rail fuel injection system.
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Kanda ; Fumio ; Kaibara ; Nobuhiro ; Ohki ; Seibi ; Okamoto ; Kazuo ; Suz uki ; Akira, Fuel injection apparatus.
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Eheim Franz (Stuttgart DEX) Straubel Max (Stuttgart DEX), Fuel injection apparatus having at least one fuel injection valve for high-powered engines.
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Iwanaga Takashi (Kariya JPX) Fujisawa Hideya (Kariya JPX) Kato Masaaki (Kariya JPX) Miyaki Masahiko (Obu JPX), Fuel injection control device.
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Ganser Marco A. (Schanzengasse 29 8001 Zrich CHX), Fuel injection device for internal combustion engines.
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Mueller Peter (Hallein ATX) Hlousek Jaroslaw (Golling ATX), Fuel injection device for internal combustion engines.
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Kato Masaaki (Kariya JPX) Nakatsuka Hirotaka (Kariya JPX) Tojo Shigeki (Mie JPX) Arai Kazuyoshi (Toyota JPX), Fuel injection nozzle.
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Kato Masaaki (Kariya JPX) Tojo Shigeki (Mie JPX) Arai Kazuyoshi (Toyota JPX), Fuel injection nozzle.
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Gibson Dennis H. (Chillicothe IL) Shinogle Ronald D. (Peoria IL), Fuel injection nozzle having a force-balanced check.
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Terada Tomohiko (Higashi Matsuyama JPX) Komada Hideaki (Higashi Matsuyama JPX), Fuel injection system.
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Ganser Marco A. (Zurich CHX), Fuel injection valve for internal combustion engines.
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Takahashi Takeshi (Mishima JPX), Fuel injector.
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Ganser Marco A. (Zrich CHX), Fuel injector unit.
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Tarr Yul J. (Columbus IN) Tikk Laszlo (Columbus IN), High pressure unit fuel injector with timing chamber pressure control.
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Maley Dale C. (Fairbury IL) Shinogle Ronald D. (Peoria IL), Hydraulically-actuated fluid injector having pre-injection pressurizable fluid storage chamber and direct-operated check.
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Yen B. M. (Columbus IN) Peters Lester L. (Columbus IN) Perr J. P. (Columbus IN) Ghuman A. S. (Columbus IN) Ashwill Dennis (Columbus IN), Injection rate shaping nozzle assembly for a fuel injector.
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Igashira Toshihiko (Toyokawa JPX) Sakakibara Yasuyuki (Nishio JPX) Watanabe Kazuhide (Toyohashi JPX) Murate Nobuyuki (Okazaki JPX), Piezoelectric flow control valve.
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Gustafson Richard J. (Columbia IN), Solenoid controlled variable pressure injector.
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이 특허를 인용한 특허 (48) 인용/피인용 타임라인 분석

C. Edward Morris ; Bjorn Westman SE; Mark S. Cavanagh, Closed nozzle fuel injector with improved controllabilty.
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Spoolstra Gregg R., Control valve.
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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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Lixl Heinz,DEX, Control valve for a fuel injection valve.
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Bosch Russell Harmon ; Grundman Richard G. ; Seino Michael James, Direct acting fuel injector.
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Sun, Zongxuan; Wu, Chienshin, Direct fuel injectors with variable injection flow rate.
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Ashizawa, Takeshi, Direct injection spark ignition internal combustion engine and method for controlling same.
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Cooke Michael Peter,GBX, Fuel Injector.
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Eckerle, Wayne A.; Temple, Ron H.; Peters, Lester L., Fuel delivery device and fuel delivery system.
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Boehland,Peter, Fuel injection device for an internal combustion engine.
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Potschin Roger,DEX ; Boecking Friedrich,DEX, Fuel injection device for internal combustion engines.
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Boehland, Peter; Nentwig, Godehard, Fuel injection system for an internal combustion engine.
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Matz, Katja; Schmidt, Uwe; Greif, Hubert, Fuel injection system for an internal combustion engine.
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Schwarz, Volker, Fuel injection valve for an internal combustion engine.
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Marco A. Ganser CH, Fuel injection valve for internal combustion engines.
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Potz, Wendelin; Sander-Potz, Maike; Moser, Friedrich; Kuegler, Thomas, Fuel injection valves for internal combustion engines.
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Cooke Michael P,GBX, Fuel injector.
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Harcombe Anthony Thomas,GBX ; Cross Robert Keith,GBX, Fuel injector.
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Magel, Hans-Christoph, Fuel injector.
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Noureddine Guerrassi FR; Christophe Tapin FR; Bernard Babiarz FR, Fuel injector.
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Sun,Jinhui; Gibson,Dennis H.; Kang,Haijun, Fuel injector having recessed check top.
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Crofts John D. ; Cavanagh Mark S. ; Savage Howard S., Fuel injector nozzle assembly with feedback control.
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Dong,Mingchun; Coldren,Dana R.; Ibrahim,Daniel R., Fuel injector with auxiliary valve.
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Tian,Steven Y.; Shafer,Scott F.; Ibrahim,Daniel R.; Shinogle,Ronald D.; Hess,Amy M., Fuel injector with directly controlled highly efficient nozzle assembly and fuel system using same.
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Crofts, John D.; Truman, III, Arthur C.; Sung, Jung-min C.; Rauznitz, Peter, Fuel injector with feedback control.
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Crofts John D. ; Morris C. Edward ; Benson Donald J., Fuel injector with floating sleeve control chamber.
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Benson,Donald J.; Rix,David M.; Peters,Lester L.; Venkataraman,Shankar C.; Morris, Jr.,C. Edward, Fuel injector with injection rate control.
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Carroll, III, John T.; Benson, Donald J.; Tarr, Yul J., Fuel injector with injection rate control.
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Ronald D. Shinogle ; Senthilkumar Rajagopalan, Fuel injector with rate shaping control through piezoelectric nozzle lift.
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Straub Robert D. ; Faupel Werner, Fuel pump control valve assembly.
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Steinruck Peter,ATX ; Rein Karl,ATX ; Horvath Josef,ATX, Gas valve with electromagnetic actuation.
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Fedrow, Sascha; Kerekgyarto, Janos; Lyubar, Anatoliy, High-pressure fuel injection valve for an internal combustion engine.
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Nishimura Terukazu,JPX, Injector.
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Lei Ning, Injector with variable needle valve opening pressure.
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Bright, Charles B.; Bosch, Russell, Magnetostrictive actuator.
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Bundock, Ronald Michael; Evett, James William, Metering equipment.
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Morris, Corydon E.; Doszpoly, Bela, Piezoelectric direct acting fuel injector with hydraulic link.
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Morris, Corydon E.; Doszpoly, Bela; Gant, Gary L., Piezoelectric direct acting fuel injector with hydraulic link.
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Rauznitz, Peter; Crofts, John D.; Peters, Lester L., Piezoelectric fuel injection system with rate shape control and method of controlling same.
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Rauznitz, Peter; Peters, Lester L.; Crofts, John D.; Meyer, William D., Piezoelectric fuel injection system with rate shape control and method of controlling same.
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Bright, Charles B., Programmable diesel fuel injector.
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Gregg R. Spoolstra ; Robert D. Straub, Pump system with high pressure restriction.
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Spoolstra, Gregg R.; Straub, Robert D., Pump system with high pressure restriction.
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Carroll, III, John T; Benson, Donald J, Rate shaping fuel injector with limited throttling.
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Stilwell, Bradford T.; Keiter, Michael J.; Patel, Devang Narharilal; Goodall, Keith Leslie, Self-modulating inert gas fire suppression system.
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Carroll, III, John T.; Benson, Donald J.; Tarr, Yul J., Variable pressure fuel injection system with dual flow rate injector.
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Perr, Julius P.; Perr, J. Victor; Peters, Lester L.; Benson, Donald J.; Carroll, III, John T., Variable spray hole fuel injector with dual actuators.
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[미국특허] Injection rate shaping nozzle assembly for a fuel injector 원문보기

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[미국특허] Injection rate shaping nozzle assembly for a fuel injector 원문보기

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이 특허에 인용된 특허 (19) 인용/피인용 타임라인 분석

이 특허를 인용한 특허 (48) 인용/피인용 타임라인 분석

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