[특허]Common rail fuel injection system

Common rail fuel injection system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F04B-039/10
출원번호	US-0821964 (1992-01-16)
발명자 / 주소	Hilsbos Richard L. (Plainwell MI) Wieland Harold L. (Jenison MI) Straub Robert D. (Lowell MI) Teerman Richard F. (Wyoming MI) Timmer Robert C. (Grandville MI)
출원인 / 주소	Diesel Technology Company (Wyoming MI 02)
인용정보	피인용 횟수 : 52 인용 특허 : 0

초록 ▼

A common rail fuel system, primarily including a high-pressure fuel pump, a rail, fuel injection nozzles, and an electronic control system, is disclosed. A substantially constant fuel pressure is maintained within the rail by the fuel pump under the direction of the electronic control system. The pressurized fuel is communicated to the fuel injection nozzles, which are also under the direction of the electronic control system, thereby providing fuel at injection pressure immediately upon the actuation of the fuel injection nozzles by the electronic control system. The pump incorporates leakage fuel during each stroke without the necessity of rerouting the leakage fuel through a primary supply. This reduces the total amount of fuel pumped and improves metering accuracy.

대표청구항 ▼

A high-pressure pump for a fuel injection system having a fuel supply means for supplying fuel at a relatively constant pressure to the pump, the pump comprising: a pump body having a pumping chamber defined therein; a mechanically driven linearly reciprocating plunger disposed in said pumping chamber, said plunger having a head end and a tail end, said plunger being linearly reciprocatable over a stroke range between an extended position and a retracted position, said pumping chamber extending beyond the extended position of said plunger to define a head portion of said pumping chamber; plunger spring means for resiliently biasing said plunger to its retracted position; an inlet valve disposed in said pump body for admitting fuel to said pumping chamber within the stroke range of the head end of said plunger, said inlet valve having an input side and an output side; inlet valve spring means for resiliently biasing said inlet valve to a closed position, said inlet valve being opened by a pressure differential when the head end of said plunger is retracted, reducing the pressure within said pumping chamber below that of the fuel disposed on the input side of said inlet valve; an outlet valve disposed in said pump body for discharging fuel from the head portion of said pumping chamber, said outlet valve having an input side and an output side; and outlet valve spring means for resiliently biasing said outlet valve to a closed position, said outlet valve being opened by a pressure differential when the head end of said plunger is extended, increasing the pressure within said pumping chamber above that of the fuel disposed on the output side of said outlet valve; said inlet valve being a ball valve; a piston, said pump body further defining therein a leakage accumulator chamber, said piston being slidably disposed within said leakage accumulator chamber, and a collector groove circumferentially disposed around said pumping chamber within the stroke range of the head end of said plunger and proximate the head end of said plunger when said plunger is retracted, the collector groove collecting fuel leaking from the head portion of said pumping chamber along said plunger, said leakage accumulator chamber being slidably divided by said piston into an anterior portion and a posterior portion, the posterior portion being at substantially atmospheric pressure, said collector groove communicating with the anterior portion of said leakage accumulator chamber, recaptured fuel from the fuel injection nozzles also being communicated to the anterior portion of said accumulator chamber; and piston spring means for resiliently biasing said piston away from the posterior portion of said leakage accumulator chamber, accumulated leakage fuel from the head portion of the pumping chamber and recaptured fuel from the fuel injection nozzles being communicated from the anterior portion of said leakage accumulator chamber to the pumping chamber when said plunger is in its retracted position.

이 특허를 인용한 특허 (52)

Otani, Tomohiro; Adachi, Hitoshi; Kotou, Fumiya; Shiomi, Hideo, Accumulator-type fuel injection apparatus and internal combustion engine provided with that accumulator-type fuel injection apparatus.
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Usui, Satoshi; Tokuo, Kenichiro; Yamada, Hiroyuki; Abe, Masami; Odakura, Hiroshi, Electromagnetic drive mechanism and a high-pressure fuel supply pump.
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Usui,Satoshi; Tokuo,Kenichiro; Yamada,Hiroyuki; Abe,Masami; Odakura,Hiroshi, Electromagnetic drive mechanism and a high-pressure fuel supply pump.
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Gibson Dennis H. (Chillicothe IL) Hefler Gregory W. (Dunlap IL) Shinogle Ronald D. (Peoria IL) Sommars Mark F. (Sparland IL) Cannon Howard N. (Peoria IL), Electronically-controlled fluid injector system having pre-injection pressurizable fluid storage chamber and direct-oper.
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McCune, Donald J.; Badarinarayan, Harsha; Mesa, Pilar Hernandez; Saikalis, George, Fuel delivery system.
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McCune, Donald J.; Badarinarayan, Harsha; Mesa, Pilar Hernandez; Saikalis, George, Fuel delivery system.
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Jay David C.,FIX, Fuel feeding system.
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Ogawa,Hisao, Fuel injection apparatus for engines.
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Yoshihiko Onishi JP, Fuel supply apparatus.
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Nobuaki Takasaki JP; Tsuyoshi Goto JP; Isao Shimizu JP, Fuel supply device for direct injection engine.
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Basmaji, Joseph; Surnilla, Gopichandra; Pursifull, Ross Dykstra, Fuel system for a multi-fuel engine.
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Mathis Christian (Muttaweg 16 ; P.O. Box 244 CH-7250 Klosters-Platz CHX), Fuel-injection system for an internal combustion engine, in particular for a diesel motor, and a method for monitoring t.
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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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Furusawa Shinya,JPX ; Hashimoto Eiji,JPX, High-pressure fuel supply device for internal combustion engine.
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Dutt,Andreas; Aleker,Jochen, High-pressure pump for a fuel injection system of an internal combustion engine.
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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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Anderson Michael D. (Metamora IL) Gibson Dennis H. (Chillicothe IL) Hefler Gregory W. (Chillicothe IL) Maley Dale C. (Watkinsville GA) Shinogle Ronald D. (Peoria IL) Sommars Mark F. (Sparland IL), Hydraulically-actuated fuel injector with direct control needle valve.
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Chen Shikui K. (Peoria IL) Hefler Gregory W. (Chillicothe IL), Hydraulically-actuated fuel injector with direct control needle valve.
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Chen Shikui K. ; Hefler Gregory W., Hydraulically-actuated fuel injector with direct control needle valve.
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Chen Shikui K. ; Hefler Gregory W., Hydraulically-actuated fuel injector with direct control needle valve.
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Hefler Gregory W. ; Chen Shikui K., Hydraulically-actuated fuel injector with direct control needle valve.
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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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Maess, Matthias; Kuempel, Joerg; Wilms, Rainer; Richter, Uwe, Method for operating a fuel system for an internal combustion engine.
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Steinbrenner, Ulrich; Joos, Klaus; Frenz, Thomas, Method for the operation of a fuel metering system on a direct injection internal combustion engine.
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Zhang, Hao; Surnilla, Gopichandra; Meinhart, Mark; Pursifull, Ross Dykstra; Basmaji, Joseph F., Methods for correcting spill valve timing error of a high pressure pump.
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Gregory W. Hefler ; Shikui K. Chen, Piston and barrel assembly with stepped top and hydraulically-actuated fuel injector utilizing same.
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Hefler, Gregory W.; Chen, Shikui K., Piston and barrel assembly with stepped top and hydraulically-actuated fuel injector utilizing same.
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Plotnikov, Yuri Alexeyevich; Matthews, Brett Alexander; Kumar, Ajith Kuttannair; Fries, Jeffrey Michael; Noffsinger, Joseph Forrest; Poonacha, Samhitha Palanganda; Frangieh, Tannous; Wheeler, Frederick Wilson; Staton, Brian Lee; Brown, Timothy Robert; Boverman, Gregory; Nayeri, Majid, Route examining system and method.
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Eddy, David Norman, Selective displacement control of multi-plunger fuel pump.
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Thomas, Eric D., System and method for controlling fuel injections.
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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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Gerlach, Keith K., Variable stroke control structure for high pressure fuel pump.
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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

Common rail fuel injection system 원문보기

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Common rail fuel injection system 원문보기

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연구과제 타임라인

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이 특허를 인용한 특허 (52)

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