• 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 injector for internal combustion engines. The fuel injector comprises a nozzle needle which is axially displaceably arranged in a nozzle body and is adapted to be lifted off its conical valve seat in response to fuel pressure. A pin of the nozzle needle extends below the valve seat into a cavity provided in the nozzle body. In the nozzle body, below the cavity, there is provided a blind hole having a diameter smaller than that of the cavity. The pin extends into this blind hole when the fuel injector is closed or slightly opened, providing substantial sealing in a radial direction. At least one spray hole enters the blind hole eccentrically in such a way that a clearance is formed which communicates with the cavity.
    公开号:SU772492A3
    申请号:SU782683954
    申请日:1978-11-13
    公开日:1980-10-15
    发明作者:Мюллер Экарт
    申请人:Машиненфабрик Аугсбург-Нюрнберг Аг (Фирма)；
    IPC主号:
    专利说明:

    one
    The invention relates to the field of engine building.
    A known fuel injection nozzle for an internal combustion engine, comprising a needle with a sealing cone, a pin and an atomizer with a conical sealing surface, a cylindrical block and a nozzle l on the continuation of the cone. .
    The disadvantage of this nozzle is that it does not provide in the process of supplying a constant injection pressure and automatically changing the position of the jet of injected fuel-15Va in the entire working range of the engine or in its part.
    The object of the present invention is to improve the atomization of the fuel. 20
    This goal is achieved by having a smaller hole in the bottom of the spray gun hole to accommodate the pin when the needle is in the closed position, and the nozzle is located eccentrically relative to the blind hole and connected to the well through a slot formed between the nozzle and the pin on a part of their perimeters , moreover, the end face of the pin and the bottom of the blind hole-30
    They are made in the form of flat surfaces located perpendicular to the longitudinal axis of the nozzle — the nozzle axis is parallel to the longitudinal axis of the nozzle, the nozzle axis is at an angle to the longitudinal axis of the nozzle, the bottom of the well is parallel to the bottom of the blind hole or the end of the pin; the plane of the bottom of the well is located at an angle to the plane of the bottom of the blind hole or the plane of the pin end; the bottom of the well is made conical in the direction of the blind hole; the end face of the pin has a conical shape, and the bottom of the blind hole is made conical.
    FIG. 1 depicts the described nozzle, a longitudinal section; in fig. 2 - nozzle in the area of the pin, a cross-section} in FIG. 3 - nozzle with the needle open, a longitudinal section; in fig. 4 - nozzle having a nozzle located parallel to the axis of the nozzle, a longitudinal section; in fig. 5 - nozzle, in which the plane of the bottom of the well is located at an angle to the plane of the bottom of the blind hole or the end face of the pin, a longitudinal section.
    The nozzle contains a needle 1 with a sealing cone 2, located on the continuation of the cone pin 3 and sprayer 4 with a cone-shaped sealing surface 5, a cylindrical well b and nozzle 7. At the bottom 8 of the well b, a smaller nozzle 7 is made through the eccentric hole relatively blind hole 9 and connected to the well b through the slot 10. The butt 11 of the pin 3 and the bottom 12 of the blind hole 9. are made in the form of flat surfaces located perpendicular to the nozzle axis. According to other variants, the bottom 8 of the well b is located parallel to the bottom 12 of the blind hole 9 or the end face 11 of the pin 3, the bottom plane 8 of the well 6 is at an angle to the bottom plane 12 of the blind hole 9 or the plane of the end face 11 of the pin 3; the bottom 8 of the well 6 is made conical in the direction of the blind hole 9, the end face 11 of the pin 3 has a tapered shape, and the bottom 12 of the blind hole 9 is made tapered. The axis of the nozzle 7 is parallel to the longitudinal axis of the nozzle or at an angle to it.
    The operation of the nozzle is carried out as follows.
    When the pressure of the fuel is increased, yoke 1 rises, fuel enters the well 6 of the atomizer 4, and from the nozzle b the nozzle 7 is directed through the slot 10 and then into the combustion chamber of the engine. At the time the needle 1 is raised, the position of the jet of injected fuel automatically changes while the injection pressure is kept constant.
    Thus, the nozzle design considered provides improved fuel atomization.
    权利要求:
    Claims (8)
    [1]
    1. Fuel injection nozzle for an internal combustion engine containing a needle with a sealing cone, a pin and an atomizer with a conical sealing surface, a cylindrical well and a nozzle located on the continuation of the cone, in order to improve the atomization of the fuel, less is made in the bottom of the spray nozzle the diameter of the blind hole to accommodate the pin with the needle needle closed, and the nozzle is located eccentrically relative to the blind hole and connected to the well through a slit, about developed -. between the nozzle and the pin on the part of their perimeters.
    [2]
    2. The choke of POP.1, characterized in that the end face of the pin and the bottom of the blind hole are made in the form of flat surfaces arranged perpendicular to the longitudinal
    , nozzle axis.
    [3]
    3. The nozzle according to PP.1, 2, about the shaving, that the axis of the nozzle is parallel to the longitudinal axis of the nozzle.
    [4]
    4. The nozzle on the PP. 1, 2, that is, so that the nozzle axis is located at an angle to the longitudinal axis of the nozzle.
    [5]
    5. The nozzle on the PP. 1, 2, about aphids, so that the bottom of the well is parallel to the bottom of the blind hole or the end face of the pin. ...
    [6]
    6. The nozzle according to PP.1, 2, characterized in that the plane of the bottom of the well is angled
    [7]
    to the bottom plane of the blind hole or the plane of the end face of the pin. 7. The nozzle according to PP.1, 2, about tl and that the bottom of the well is so tangently conical towards the blind hole.
    [8]
    8. The nozzle according to PP.1, 2, about tl and tacho, so that the end face of the pin has a conical shape, and the bottom of the blind hole is made conical.
    Sources of information taken into account in the examination.
    1. US patent 3642212, cl. 239-533, 1973.
    类似技术:
    公开号 | 公开日 | 专利标题
    SU772492A3|1980-10-15|Fuel injector for internal combustion engine
    SU795513A3|1981-01-07|Plugging fuel ejector for internal combustion engine
    US4759335A|1988-07-26|Direct fuel injection by compressed gas
    US4006719A|1977-02-08|Vortex action fuel injection valve for internal combustion engine
    US20020158152A1|2002-10-31|Fuel injection nozzle for self-igniting internal combustion engines
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    SU837334A3|1981-06-07|Fuel jet
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    WO2000053922A1|2000-09-14|Fuel injector for internal combustion engines and method for making same
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    US6918549B2|2005-07-19|Fuel injector tip for control of fuel delivery
    US5724937A|1998-03-10|Internal combustion engine with direct fuel injection
    SU845800A3|1981-07-07|Fuel jet
    US3531052A|1970-09-29|Fuel injector for internal combustion engines
    GB1194655A|1970-06-10|Improvements relating to Internal Combustion Engines
    ES8205037A1|1982-05-16|Fuel pump-injector unitary assembly for internal combustion engine
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    GB2057057A|1981-03-25|Fuel injector for diesel engine
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    US20030116653A1|2003-06-26|Fuel injector tip
    ES8205950A1|1982-06-16|Pump-injector device for an internal combustion engine
    同族专利:
    公开号 | 公开日
    IN150799B|1982-12-18|
    DD140158A1|1980-02-13|
    DE2750929A1|1979-05-17|
    GB2007765A|1979-05-23|
    FR2408733A1|1979-06-08|
    CH631519A5|1982-08-13|
    JPS5477824A|1979-06-21|
    IT7829738D0|1978-11-14|
    PH17650A|1984-10-23|
    DE2750929C2|1985-02-14|
    RO76570A|1981-04-30|
    GB2007765B|1982-05-12|
    HU178284B|1982-04-28|
    IT1100268B|1985-09-28|
    US4254915A|1981-03-10|
    JPS6059428B2|1985-12-25|
    SE7811706L|1979-05-16|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE663301C|1933-03-14|1938-08-04|Bosch Gmbh Robert|Injection nozzle for internal combustion engines with self-ignition|
    US2186216A|1935-02-04|1940-01-09|John W Smith|Apparatus for spraying liquid fuel into a combustion chamber having the required turbulence|
    FR899594A|1942-01-24|1945-06-05|Daimler Benz Ag|Flat seat nozzle for internal combustion engines|
    FR1056529A|1951-07-20|1954-03-01|Injection nozzle for internal combustion engines|
    FR1067693A|1951-12-20|1954-06-17|Friedmann & Maier Ag|Nozzle for internal combustion engines with injection|
    GB738769A|1951-12-20|1955-10-19|Emmerich Satzger|Improvements in and relating to fuel injection nozzles for injection internal combustion engines|
    FR1197303A|1957-07-05|1959-11-30|Maschf Augsburg Nuernberg Ag|Injector, especially for internal combustion engines|
    CH402510A|1963-05-14|1965-11-15|Sulzer Ag|Fuel injection valve of a piston internal combustion engine|
    DE1252968B|1966-08-01|1967-10-26|Kugelfischer G Schaefer & Co|Pressure-controlled injection nozzle for internal combustion engines|
    US3559892A|1968-06-18|1971-02-02|Ambac Ind|Fuel injection nozzle with auxiliary spray orifice|DE2814999C2|1978-04-07|1988-09-08|Man Nutzfahrzeuge Gmbh, 8000 Muenchen, De|
    DE2902417C2|1979-01-23|1988-09-08|Man Nutzfahrzeuge Gmbh, 8000 Muenchen, De|
    IT1129141B|1980-09-02|1986-06-04|Fiat Auto Spa|FUEL INJECTION DEVICE FOR PRE-CHAMBER DIESEL ENGINES|
    DE3229716C2|1982-08-10|1995-01-26|Bosch Gmbh Robert|Fuel injector|
    DE3407545A1|1984-03-01|1985-09-05|Hubert 8500 Nürnberg Keiczek|Fuel injection nozzle for internal-combustion engines|
    DE3502642A1|1985-01-26|1986-07-31|Daimler-Benz Ag, 7000 Stuttgart|FUEL INJECTION VALVE FOR AN AIR-COMPRESSING INJECTION COMBUSTION ENGINE|
    US4893754A|1987-11-13|1990-01-16|Francisco Ruiz|Generation of flat liquid sheet and sprays by means of simple cylindrical orifices|
    JPH025753A|1988-06-23|1990-01-10|Aisan Ind Co Ltd|Fuel injection valve and nozzle thereof|
    JPH03151925A|1989-11-10|1991-06-28|Tokyo Electric Co Ltd|Vacuum cleaner|
    DE19815780A1|1998-04-08|1999-10-14|Bosch Gmbh Robert|Fuel injector and method for assembling a fuel injector|
    DE19907899A1|1999-02-24|2000-08-31|Bosch Gmbh Robert|Fuel injector|
    DE19907897A1|1999-02-24|2000-08-31|Bosch Gmbh Robert|Fuel injector|
    US7438241B2|2004-11-05|2008-10-21|Visteon Global Technologies, Inc.|Low pressure fuel injector nozzle|
    US7124963B2|2004-11-05|2006-10-24|Visteon Global Technologies, Inc.|Low pressure fuel injector nozzle|
    US7198207B2|2004-11-05|2007-04-03|Visteon Global Technologies, Inc.|Low pressure fuel injector nozzle|
    US7168637B2|2004-11-05|2007-01-30|Visteon Global Technologies, Inc.|Low pressure fuel injector nozzle|
    US7104475B2|2004-11-05|2006-09-12|Visteon Global Technologies, Inc.|Low pressure fuel injector nozzle|
    US7185831B2|2004-11-05|2007-03-06|Ford Motor Company|Low pressure fuel injector nozzle|
    US7051957B1|2004-11-05|2006-05-30|Visteon Global Technologies, Inc.|Low pressure fuel injector nozzle|
    US7137577B2|2004-11-05|2006-11-21|Visteon Global Technologies, Inc.|Low pressure fuel injector nozzle|
    US9903329B2|2012-04-16|2018-02-27|Cummins Intellectual Property, Inc.|Fuel injector|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE2750929A|DE2750929C2|1977-11-15|1977-11-15|Fuel injector for internal combustion engines|
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