An electrically controlled fuel injector unit for fuel injection in internal combustion engines, in which an injection pump, an injection nozzle, and between them a control valve and control magnet are fastened in a fuel injector unit housing. The control valve and the control magnet, including requ
An electrically controlled fuel injector unit for fuel injection in internal combustion engines, in which an injection pump, an injection nozzle, and between them a control valve and control magnet are fastened in a fuel injector unit housing. The control valve and the control magnet, including requisite conduits, are combined in a magnet valve housing to form a structural unit that is inserted as a whole into the fuel injector unit housing. The control valve and control magnet are disposed eccentrically in the magnet valve housing, and a high-pressure conduit that connects the pump work chamber to the injection nozzle extends on a side of the magnet valve housing having a greater accumulation of material resulting from the eccentricity.
대표청구항▼
An electrically controlled fuel injector unit for fuel injection in internal combustion engines, comprising, a fuel injector unit housing (1) that includes at least two parts in an axial direction which are secured together, an injection pump including a pump piston (7) in said housing which is driv
An electrically controlled fuel injector unit for fuel injection in internal combustion engines, comprising, a fuel injector unit housing (1) that includes at least two parts in an axial direction which are secured together, an injection pump including a pump piston (7) in said housing which is driven with a constant stroke, a control valve (16) for controlling a hydraulic connection of a low-pressure fuel system (27-29) to a high-pressure fuel system (7-15), an electric control magnet (17, 47-51) for actuating the control valve (16, 46, 52-58), and a fuel injection nozzle (6, 11-14) for the high-pressure injection disposed in said housing, a high-pressure conduit (9), that leads from a pump work chamber (8) of the pump piston (7) to said injection nozzle (6) and from which a branch conduit (19) leads to a high-pressure chamber (54) of the control valve (16), said control valve includes a movable valve member (46, 52) which controls a connection of said high-pressure chamber (54) to a low-pressure chamber (65), wherein hydraulically impinged spaces of the movable valve member (46) inside the high-pressure chamber (54) are largely pressure-equalized with respect to the control motion, and a low-pressure conduit (21, 66, 67) that leads to the low-pressure chamber (65) for the fuel delivered from the low-pressure fuel system (27-29), the electric control magnet (17, 47-51) and the control valve (16), with a magnet valve housing (45), form a structural unit that is insertable as a whole into the fuel injector unit housing (1); the magnet valve housing (45) is fastened between the injection pump (4) and the injection nozzle (6), and has a common end face with each of them; a portion of the high-pressure conduit (9) extends from one end face to the other in the magnet valve housing (45), from said portion of the high pressure conduit said branch conduit (19) extends in the magnet valve housing (45) to the high-pressure chamber (54) of the control valve (16); and a low-pressure annular groove (66) is disposed between the fuel injector unit housing (1) and the magnet valve housing (45), said groove communicating on one end with the low-pressure conduit (21) that leads to the low-pressure chamber (65) and on the other end with a connecting bore (67) that leads to an outside of the fuel injector unit housing (1).
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이 특허를 인용한 특허 (24)
Tian Steven Y., Damped solenoid actuated valve and fuel injector using same.
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.
Shorey Stacy J. (Grand Rapids MI) Harkema Randall C. (Caledonia MI) DeYoung Beckie J. (Stanwood MI) Potter Kenneth R. (Kalamazoo MI) Straub Robert D. (Lowell MI), Fuel pumping and injection systems.
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.
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.
Tarr Yul J. (Columbus IN) Crofts John D. (Edinburgh IN) Carroll ; III John T. (Columbus IN) Tikk Laszlo D. (Columbus IN), Needle controlled fuel system with cyclic pressure generation.
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