• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A fuel injection nozzle includes a fuel pressure actuated valve member slidable in a bore and engaged by a piston slidable in a cylinder of smaller diameter than the bore and connected thereto the space defined between the piston and valve member communicates by way of a non-return valve with the end of the cylinder remote from the bore. In operation fuel is displaced from said space past the non-return valve and the pressure in the end of the cylinder remote from the bore rises to increase the force acting to maintain the valve member in the closed position.
    公开号:SU980633A3
    申请号:SU792818053
    申请日:1979-09-25
    公开日:1982-12-07
    发明作者:Джеймс Эндрюс Ричард
    申请人:Лукас Индастриз Лимитед (Фирма)；
    IPC主号:
    专利说明:

    (5) SPRAYER
    FIELD: engine building.
    A known diesel fuel injection nozzle, comprising a spray needle inside the spray channel, spray nozzle openings, a fuel delivery channel, a stop needle seat, a piston connected to the needle in the cylinder, a spring for acting on the piston, a passage for connecting the channel sprayer and cylinder and valve device to regulate pressure in the over piston space J.
    The disadvantage of this nozzle is the reduced pressure corresponding to its opening at start-up, which causes a deterioration in the starting properties of the engine.
     The purpose of the invention is to increase efficiency.
    This goal is achieved by the fact that the diameter of the piston is smaller than the diameter of the channel of the atomizer, and the latter is connected to the over piston space through a check valve.
    The valve device is equipped with a drainage channel.
    In addition, the valve device communicates with the heat transfer passage.
    Fuel flow limiters are installed between the over-piston space and the fuel feed channel.
    ten
    In this case, flow limiters are installed on both sides of the valve device.
    The drawing shows a structural diagram of the nozzle.
    -five
    The nozzle has an aperture needle 3 located inside the channel 1 of the atomizer 2. 5. The nozzle holes C of the atomizer 2, the fuel supply channel 5, the seat 6 for the locking needle 3, 20 in the cylinder, 7 the piston 8, the passage 9 for connecting the channel 1 of the atomizer 2 and the cylinder 7 and a valve device 10 for controlling the pressure in the over piston space.
    The diameter of the piston 8 is smaller than the diameter of the channel 1 of the atomizer 2, and the latter is connected to the overhead piston. Measuring non-return valve 12. The valve device 10 is provided with drainage channel 13 and is connected to the fuel supply channel 5. Between the overhead piston 11 and the fuel feed channel 5 are installed limiters 14 and 15 of the fuel flow; limiters 1 and 15 of the flow are installed on both sides of the valve device 10.
    The operation of the nozzle is carried out as follows.
    When fuel is supplied from the pump, pressure is lifted by the locking needle 3. The main part of the fuel enters the engine combustion chamber through nozzle openings k, 20. And the rest of the fuel, in the gap between the needle 3 and the atomizer 2, flows into the over piston space 11 through a check valve 12 which causes an increase in injection pressure. The last 25 is determined by the setting of the valve device TO and the limiter 14 and 15 of the fuel flow. Peretechk, fuel returned to the top supply channel 5 through the drainage channel 13
    Thus, the considered nozzle provides increased efficiency by increasing the injection pressure corresponding to its opening.
    权利要求:
    Claims (5)
    [1]
    Claim 1. Injection nozzle for supplying fuel to diesel containing
    inside the nozzle channel, a locking needle, nozzle orifices of the nozzle, fuel supply channel, a nozzle needle seat, a piston in the cylinder connected to the needle, a spring for acting on the piston, a passage for connecting the nozzle channel and the cylinder, and a valve device for regulating the pressure in the piston space, so that, in order to increase efficiency, the diameter of the piston is made smaller than the diameter of the nozzle channel, and the latter is connected to the over piston space through a check valve.
    [2]
    2. The injector according to claim 1, characterized in that the valve device is provided with a drainage channel. .
    [3]
    3. The injector according to claim 1, in connection with the fact that the valve device is in communication with the fuel feed passage.
    [4]
    , Nozzle on PP. 1 and 3, I confess with the fact that fuel flow limiters are installed between the Piston space and the fuel feed channel.
    [5]
    5. The nozzle according to claim 4, characterized in that the flow limiters are installed on both sides of the valve device.
    Sources of information taken into account in the examination
    1. German Patent No. 736684, cl. 46 with 103, published. 1943.
    类似技术:
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    GB2076073A|1981-11-25|Internal combustion engine fuel injectors operated by engine compression pressure
    US3391871A|1968-07-09|Fuel injection valve for internal combustion engines
    GB2124699A|1984-02-22|A fuel injection pumping nozzle for an i c engine
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    US4216754A|1980-08-12|Fuel injection system
    EP0821154B1|2002-01-02|Fuel pumping apparatus
    ES287875A1|1963-12-16|Improvements in fuel injectors for internal combustión engines |
    GB736794A|1955-09-14|Improvements in liquid fuel injection equipment for internal combustion engines
    SU1386733A1|1988-04-07|Electromagnetic injector with control unit for injecting fuel into internal combustion engine
    SU1326761A1|1987-07-30|Fuel system
    US2599018A|1952-06-03|Fuel injector
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    JP2760040B2|1998-05-28|Unit injector fuel supply and discharge device
    SU1321892A1|1987-07-07|Electrically controlled atomizer for diesel engine with fuel feed system
    同族专利:
    公开号 | 公开日
    IT1123323B|1986-04-30|
    JPS5546086A|1980-03-31|
    IT7925975D0|1979-09-25|
    US4261513A|1981-04-14|
    ES483514A1|1980-03-01|
    DE2938412A1|1980-04-10|
    FR2437495B1|1985-05-24|
    JPS615554B2|1986-02-19|
    DE2938412C2|1992-10-01|
    FR2437495A1|1980-04-25|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE879936C|1948-03-08|1953-06-18|Cav Ltd|Fuel injector for internal combustion engines|
    GB1412413A|1971-10-28|1975-11-05|Cav Ltd|Liquid fuel injection systems|
    GB1406216A|1971-10-30|1975-09-17|Cav Ltd|Fuel injection nozzle units|
    GB1472401A|1973-05-12|1977-05-04|Cav Ltd|Fuel injection nozzles|DE2930716C2|1979-07-28|1988-09-08|Daimler-Benz Ag, 7000 Stuttgart, De|
    US4346841A|1980-02-02|1982-08-31|Lucas Industries Limited|Fuel injection nozzle unit|
    US4379524A|1980-05-16|1983-04-12|Lucas Industries Limited|Fuel injection nozzles|
    FR2673246B1|1991-02-25|1994-01-28|Melchior Jean|DEVICE FOR INJECTING LIQUID, PARTICULARLY FUEL, IN AT LEAST ONE PRESSURIZED CHAMBER OF A PERIODICALLY OPERATING MACHINE SUCH AS AN INTERNAL COMBUSTION ENGINE AND ENGINE OF THIS TYPE EQUIPPED WITH SUCH A DEVICE.|
    GB9614822D0|1996-07-13|1996-09-04|Lucas Ind Plc|Injector|
    GB9623469D0|1996-11-12|1997-01-08|Lucas Ind Plc|Injector|
    DE19825171A1|1997-12-18|1999-07-01|Orange Gmbh|Fuel injection valve for internal combustion engine|
    US6092744A|1998-08-07|2000-07-25|Caterpillar, Inc.|Fuel injector with pressure regulated trapped volume nozzle assembly|
    DE19941703A1|1999-09-02|2001-03-08|Bosch Gmbh Robert|Fuel injection valve for internal combustion engines|
    CA2405350C|2002-09-26|2004-08-10|S. Michael Baker|Liquid cooled fuel injection valve and method of operating a liquid cooled fuel injection valve|
    DE102010030343A1|2010-06-22|2011-12-22|Robert Bosch Gmbh|Device and method for dosing a liquid in the exhaust line of an internal combustion engine|
    US10605213B2|2015-08-21|2020-03-31|Cummins Inc.|Nozzle combustion shield and sealing member with improved heat transfer capabilities|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    GB7838126|1978-09-26|
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