• 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 multi-hole injection nozzle for air-compressing direct-injection internal combustion engines includes a first nozzle needle which is hollow, and a second nozzle needle which is axially slidable in an axial bore of the first needle. The first needle can close one or more nozzle holes which are spaced from the tip of the injection nozzle and the second needle can similarly close one or more nozzle holes which are, however, close to the tip and which have respectively different cross-sectional areas.
    公开号:SU873893A3
    申请号:SU782584796
    申请日:1978-03-01
    公开日:1981-10-15
    发明作者:Кайцек Хуберт
    申请人:Машиненфабрик Аугсбург-Нюрнберг Аг(Фирма)；
    IPC主号:
    专利说明:

    (54) SPRAYER
    one.
    FIELD: engine building.
    The known nozzle for an internal combustion engine, comprising a housing, an atomizer with nozzle openings, guide and sealing parts, shut-off needles located in each other, each of which has sealing parts and is loaded with its own pre-tension spring JQ. to ensure the succession of elongation first of one needle and then, with an increase in pressure |, of the second needle, and a top hole 11 ..,
    The disadvantage of this nozzle is that it is difficult to manufacture.
    The purpose of the invention is to simplify; 20 designs.
    This goal is achieved by the fact that the sealing part of the inner needle is adapted to move in the guide part of the diverter, and the spring of the outer needle is located between its end face and the end face of the sealing part of the inner needle, and the outlet of the fuel-returning needle; versti is connected with the cavity above the seal - 30
    outer part of the outer needle or with the cavity of the spring of the outer needle. .
    The inner needle is made with a notch and a gripper located in it in the form of a ring or in the form of a finger fixed on the inner needle.
    The sealing parts of the sprayer are made in the form of a solid surface.
    Figure 1 shows the nozzle, a General view; Fig. 2 shows the same, with a modified arrangement of the outlet of the fuel feed hole; FIG. 3 shows the lower part of the nozzle with a simultaneous supply of fuel to act on both needles; FIG. 4 is the same, the inner needle of which is made of a composite of two parts; figure 5 is the same, with a centrally located nozzle from: version; Fig. 6 is the same, with intersecting nozzle openings; Fig. 7 shows a nebulizer with a fuel inlet made in the cannula; Fig. 8 shows the lower part of the nozzle, the grip of the inner needle of which is made in the form of a ring; figure 9 is the same, the capture of the inner needle of which is made in the form of a finger.
    The nozzle includes a housing 1, a dispenser 2 with nozzle openings 3, a guide 4 and a sealing 5 parts, each of the locking needles 6 and 7 located one inside the other, each of which has sealing parts 8 and 9, the needle 6 is loaded with a spring 10, and the needle 7 - a spring 11 installed with a preload to ensure successive lifting first with one and then, with increasing pressure, the other needle, In the dispenser 2, the fuel supply hole 12 is made. The sealing part 9 of the internal needle 7 is designed to move in the direction 4 of the outer needle 6 is located between its end 1 and 14 of the sealing part 9 of the inner needle 7, the outlet 15 of the fuel supply to the bore hole 12 being connected to the cavity 16 of the outer needle spring 10 b. In one of the variants, the inner needle 7 is made with a notch 17 and the gripper in the form of a ring 18 located in it, in another variant the gripper is made in the form of a finger 19 fixed on the inner needle 7.
    The sealing parts 5 of the spray gun 2 are made in the form of a solid surface. The inner needle 7 can be made of a composite of two parts 20 and 21.
    The nozzle works as follows. ,
    At the moment of increasing the pressure of the fuel entering the nozzle through the fuel inlet 12, it acts on the internal needle 7 and lifts it, part of the nozzle holes 3 of the atomizer 2 opens and the first stage of feeding torus to the engine chamber begins. With further increase in pressure, the inner needle 7 with its grip in the form of a ring 18 or in the form of a finger 19 acts on the outer needle 6 and finally rises, compressing the spring 10. The rest of the nozzle holes 3 of the atomizer 2 open and the second stage of fuel supply to the combustion chamber begins.
    In modes of operation of the engine, characterized by a slight increase in fuel pressure, only one needle rises and fuel is injected into the combustion chamber only through part of the nozzle orifices 3 of the sprayer 2. When pressure decreases, both needles 6 and 7 are lowered and the fuel supply stops .
    Thus, by eliminating precision mating between the outer and inner needle, the nozzle design is simplified.
    Formula invention
    S
    权利要求:
    Claims (5)
    [1]
    1. A nozzle for an internal combustion engine, comprising a housing, a dispenser with nozzles, guide and sealing parts, one locking needles located one inside the other, each of which has sealing parts and is loaded with its own spring with a preload for dl. providing a single needle first, and then, with increasing pressure, a second needle, and a fuel supply hole, characterized in that, in order to simplify the design, the sealing part of the inner needle is movable in the guide part of the sprayer, and the outer needle spring is located between its end and the end of the sealing part of the inner needle, wherein the exit of the fuel-supporting hole is connected with the cavity above the sealing part of the outer needle or with the cavity of the spring of the outer needle.
    [2]
    2. A nozzle unit according to claim 1 .0 tl. And with the fact that the inner needle is made with a notch and a catch located therein.
    [3]
    3. The injector according to claim 2, is distinguished by the fact that the grip is made in the form of a ring.
    [4]
    4. The injector according to claim 2, distinguishes from the fact that the grip is made in the form of a finger fixed on the inner needle.
    [5]
    5. The injector according to claim 1, wherein the sealing parts of the sprayer are made in the form of a solid surface.
    Sources of information taken into account in the examination
    1, Patent GDR 102198, cl. 1973.
    (put.ft
    Fig: 5
    FIG. 6
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    同族专利:
    公开号 | 公开日
    US4202500A|1980-05-13|
    IN148585B|1981-04-11|
    SE7802721L|1978-09-10|
    RO75846A|1981-02-28|
    IT7820995D0|1978-03-09|
    CH629873A5|1982-05-14|
    DE2710138A1|1978-09-14|
    IT1112254B|1986-01-13|
    FR2383322B1|1984-02-17|
    JPS53110722A|1978-09-27|
    GB1588050A|1981-04-15|
    FR2383322A1|1978-10-06|
    SE417857B|1981-04-13|
    HU176699B|1981-04-28|
    DD134129A1|1979-02-07|
    引用文献:
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE19772710138|DE2710138A1|1977-03-09|1977-03-09|MULTI-HOLE INJECTION NOZZLE|
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