• 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 in which an axially slidable nozzle needle is provided which is capable of being lifted off its seat by the pressure of the fuel against the thrust of one or a plurality of springs and is formed with a pointed tip below the valve seat with at least one spray hole being provided in the nozzle body at an acute angle relative to the nozzle axis. The tip of the nozzle needle is shaped and enters the spray hole or injection bore in such a way that the free cross-sectional area at the injection bore is less than the free cross-sectional area at the seat in nearly all positions of the nozzle needle.
    公开号:SU845800A3
    申请号:SU782674150
    申请日:1978-10-12
    公开日:1981-07-07
    发明作者:Мюллер Экарт
    申请人:Машиненфабрик Аугсбург-Нюрнберг Аг (Фирма)；
    IPC主号:
    专利说明:

    one
    This invention relates to engine building.
    A well-known fuel injector for an internal combustion engine, comprising an atomizer with a nozzle opening inclined to its axis and a sealing seat and capable of axial movement under the pressure of fuel from its sealing seat to an angle, provided under the sealing seat by a conical tip partially immersed in the nozzle opening 1} .
    The disadvantage of this nozzle is that QHa, due to the low pressure in the OPEN and locking needles, does not properly prepare the mixture for combustion, resulting in smokyness and increased fuel consumption.
    The aim of the invention is to provide a constant fuel injection pressure.
    This goal is achieved by the fact that the angle of the inclined nozzle hole to the axis of the atomizer is made equal to the angle of inclination of the generatrix of the conical tip of the needle to its axis, while the cross section of the nozzle orifice released by the conical tip
    at all needle positions less than the corresponding free cross section of the sealing seat.
    The drawing shows the designs on the nozzle diagram.
    the nozzle contains a sprayer 1 with a nozzle opening 2 inclined to its axis and a sealing seat 3 and capable of axially moving the needle 4 under the action of fuel pressure, fitted with a conical tip .5 under the saddle 3 partially immersed in the opening 2. Inclination angle (about ) 2 holes to the axis
    15 sprayer 1: made equal to the angle of inclination (cx) of the needle tip 5 of the needle 4 to its axis, while the cross section of the hole 2 released by the tip 5 at all positions igal 4 is less than the corresponding free cross section of the saddle 3.
    The operation of the nozzle is carried out as follows.
    With increasing fuel pressure
    25, the needle 4 rises from its seat and the fuel enters the burned chamber: the engine through the nozzle opening 2 released by the tip 5. At the end of the fuel supply, the needle 4 is di 30 onto the saddle 3.
    Thus, due to the change in the free passage section of the nozzle orifice, the con is considered, the nozzle struc- ture ensures a constant fuel injection pressure.
    invention formula
    Fuel nozzle: for an internal combustion engine, containing an atomizer with an inclined-nozzle orifice and sealing seat inclined to its axis and made axially displaced by a pressure of fuel from its sealing seat with a conic tip partially submerged into the nozzle orifice characterized in that, in order to ensure a constant fuel injection pressure, the inclination angle (ct-) of the nozzle orifice to the axis of the atomizer is equal to the inclination angle (o / ) forming the tapered point of the needle to its axis, while the cross section of the nozzle hole released by the conical tip at all needle positions is less than the corresponding free cross section at the sealing seat.
    Sources of information taken into account in the examination 1. Improving the design of diesel nozzle sprayers. Review NIIInformt Zhmash, - M., № 4-76-31, s, 5-7, fig, a.
    权利要求:
    Claims (1)
    [1]
    Claim
    Fuel nozzle: for an internal combustion engine, comprising a nozzle with a nozzle opening inclined to its axis and a sealing seat and made with the possibility of axial movement under the influence of fuel pressure from its sealing seat, a needle equipped with a conical point under the sealing seat, partially immersed in the nozzle opening, characterized in that, in order to ensure constant fuel injection pressure, the angle of inclination) of the nozzle hole to the axis of the atomizer is made equal to the angle of inclination (o>) of azuyuschey conical tip of the needle to its axis, with a releasable conical tip cross-section of the nozzle hole at all positions of the needle is less than the respective free cross-sectional area at the sealing seat.
    类似技术:
    公开号 | 公开日 | 专利标题
    SU873893A3|1981-10-15|Jet
    SU795513A3|1981-01-07|Plugging fuel ejector for internal combustion engine
    US4106702A|1978-08-15|Fuel injection nozzle tip with low volume tapered sac
    US5016820A|1991-05-21|Fuel injectors for internal combustion engines
    US3469793A|1969-09-30|Fuel injection system
    SU837334A3|1981-06-07|Fuel jet
    SU845800A3|1981-07-07|Fuel jet
    CA2358150A1|2002-04-24|Gaseous and liquid fuel injection valve with concentric needles
    US4313407A|1982-02-02|Injection nozzle for air-compressing direct injection internal combustion engines
    JPH01125559A|1989-05-18|Damped opening poppet covered orifice fuel injection nozzle
    US5465907A|1995-11-14|Fuel injection nozzle for internal combustion engines
    SE8206256L|1983-05-28|AIR COMPRESSOR, DIRECT INJECTION COMBUSTION ENGINE
    US5167210A|1992-12-01|Injector device for an internal combustion engine
    EP0308855A3|1990-07-25|Fuel injection nozzle
    SU981664A1|1982-12-15|I.c. engine injection nozzle sprayer body
    US4205790A|1980-06-03|Fuel injector
    KR950702007A|1995-05-17|Fuel injection nozzle for internal combustion engines
    SU1240945A1|1986-06-30|Diesel engine fuel nozzle
    US20030116653A1|2003-06-26|Fuel injector tip
    SU1249186A1|1986-08-07|Nozzle injector
    KR100293551B1|2001-07-12|Fuel injection nozzle having double injection angles for diesel engine
    SU399616A1|1973-10-03|INJECTOR FOR FUEL INJECTION
    SU1086204A1|1984-04-15|Jet atomizer for internal combustion engine
    SU1377441A1|1988-02-28|Pintle-type atomizer
    SU681206A1|1979-08-25|Injection nozzle for spraying liquid fuel
    同族专利:
    公开号 | 公开日
    FR2406084B1|1982-10-22|
    SE7810730L|1979-04-13|
    US4208014A|1980-06-17|
    JPS5493715A|1979-07-25|
    GB2007766B|1982-02-10|
    JPS619514B2|1986-03-24|
    FR2406084A1|1979-05-11|
    IT7828691D0|1978-10-12|
    IN150978B|1983-02-05|
    IT1099292B|1985-09-18|
    DE2746010C2|1985-02-14|
    HU175789B|1980-10-28|
    SE448827B|1987-03-23|
    DD139738A1|1980-01-16|
    DE2746010A1|1979-04-19|
    GB2007766A|1979-05-23|
    RO77059A|1981-06-22|
    CH632053A5|1982-09-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE347725C|1922-01-24|Benz & Cie Rheinische Automobi|Injection nozzle for internal combustion engines|
    US2470717A|1944-03-16|1949-05-17|Palumbo Vincent|Fuel injector for internalcombustion engines|
    DE1197303B|1959-03-12|1965-07-22|Tainton Company|Process for the production of metallic coatings|
    BE773350A|1970-10-01|1972-03-30|Rosenkaimer Gmbh|MARQUISE SHAPED SUN PROTECTION DEVICE|DE2902417C2|1979-01-23|1988-09-08|Man Nutzfahrzeuge Gmbh, 8000 Muenchen, De|
    US4540126A|1982-04-08|1985-09-10|Nissan Motor Co., Ltd.|Fuel injection nozzle|
    DE3303470A1|1983-02-02|1984-08-02|Jaroslavskij savod diselnoj apparatury, Jaroslavl|Injection nozzle for combustion engines|
    DE3502642A1|1985-01-26|1986-07-31|Daimler-Benz Ag, 7000 Stuttgart|FUEL INJECTION VALVE FOR AN AIR-COMPRESSING INJECTION COMBUSTION ENGINE|
    US5533482A|1994-05-23|1996-07-09|Nissan Motor Co., Ltd.|Fuel injection nozzle|
    US6935578B1|1998-11-25|2005-08-30|Hitachi, Ltd.|Fuel injection valve|
    JP3771361B2|1997-11-26|2006-04-26|株式会社日立製作所|Fuel injection valve|
    EP2013470B1|2006-08-29|2010-10-06|Continental Automotive GmbH|Method for reducing depositions within a spray hole of a fuel injection device|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE19772746010|DE2746010C2|1977-10-13|1977-10-13|Fuel injector for internal combustion engines|
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