Electrically controlled fuel injection pump for internal combustion
engines
    1.
    发明授权
    Electrically controlled fuel injection pump for internal combustion engines 失效
    用于内燃机的电控燃油喷射泵

    公开(公告)号:US4653455A

    公开(公告)日:1987-03-31

    申请号:US775872

    申请日:1985-09-13

    摘要: The injection pump has a pump piston driven with a constant stroke which pumps fuel at injection pressure to an injection nozzle so long as an electrically actuated overflow valve blocks the flow of the fuel overflowing via an overflow conduit to a low-pressure chamber. The overflow valve is a needle valve, the valve needle of which, opening inward toward a pressure chamber that can be placed under injection pressure, by means of a conical closing surface radially defining a needle tip controls a valve seat that widens conically toward the pressure chamber. The cone angle of the closing surface is larger than the cone angle of the associated valve seat and the closing surface forms a sealing edge, the diameter of which is equal to or only slightly smaller than the guide diameter of the guide shank on the valve member. In a preferred embodiment, the needle tip of the valve member has an external contour on its end, adjacent to the closing surface, which directs the fuel flow and reinforces the opening movement. The injection pump is particularly suitable for high-pressure injection in Diesel engines, in order to attain an exact electrical control of the supply onset and supply quantity, if a reservoir chamber defined by a deflecting piston is connected to a high-pressure chamber that includes the pump work chamber.

    摘要翻译: 注射泵具有以恒定行程驱动的泵活塞,其将注射压力的燃料泵送到注射喷嘴,只要电致动的溢流阀将经由溢流管道溢出的燃料流阻塞到低压室即可。 溢流阀是一种针阀,其阀针通过径向限定针尖的圆锥形闭合表面向可朝向注射压力放置的压力室向内打开,从而控制一个阀座,该阀座朝向压力 房间。 闭合表面的锥角大于相关阀座的锥角,并且闭合表面形成密封边缘,其直径等于或仅略小于阀构件上的引导柄的引导直径 。 在优选实施例中,阀构件的针尖在其端部上具有邻近封闭表面的外部轮廓,其引导燃料流动并加强打开运动。 如果由偏转活塞限定的储存室连接到高压室,则喷射泵特别适用于柴油发动机中的高压喷射,以便获得供应开始和供应量的精确电气控制,所述高压室包括 泵工作室。

    Fuel injection pump for internal combustion engines, in particular
diesel engines
    2.
    发明授权
    Fuel injection pump for internal combustion engines, in particular diesel engines 失效
    内燃机燃油注射泵,特别是柴油发动机

    公开(公告)号:US5072706A

    公开(公告)日:1991-12-17

    申请号:US542808

    申请日:1990-06-22

    摘要: A fuel injection arrangement for internal combustion engines, particularly for diesel engines, is indicated, in which the fuel injection is divided into an advance injection and a main injection for the purpose of noise reduction. An advance injection unit (27) is provided for the purpose of proportioning the advance injection quantity and a fuel injection pump of a conventional construction is provided for proportioning the main injection quantity. For an optimal design of the advance injection quantity with respect to noise reduction without influencing the main injection quantity, the advance injection unit (27) comprises a high-pressure storage (28), which is compressed to injection pressure, and at least one solenoid valve (30), which is controlled with respect to time. The advance and main injections are preferably effected via separate nozzle cross sections (21, 22).

    摘要翻译: 指示用于内燃机,特别是用于柴油发动机的燃料喷射装置,其中为了减少噪音,将燃料喷射分为预喷射和主喷射。 提供了用于比例预先喷射量的预喷射单元(27),并且提供了用于与主喷射量成比例的常规结构的燃料喷射泵。 为了在不影响主喷射量的前提下进行喷射量的优化设计,预喷射单元(27)包括压缩至喷射压力的高压储存器(28)和至少一个螺线管 阀门(30),其相对于时间被控制。 提前和主要喷射优选通过分开的喷嘴横截面(21,22)进行。

    Fuel injection nozzle for internal combustion engines
    3.
    发明授权
    Fuel injection nozzle for internal combustion engines 失效
    内燃机燃油喷嘴

    公开(公告)号:US4801095A

    公开(公告)日:1989-01-31

    申请号:US35584

    申请日:1986-12-15

    摘要: Fuel injection nozzle for internal combustion engines includes a nozzle element having a front cusp formed with a conical valve seat face. At least one injection hole is provided in the front cusp. The outer wall area of the front cusp which is disposed opposite to the valve seat face has a lower hardness than that of the inner wall area forming the valve seat face. When the injection hole extends from a pocket hole, preferably the outer wall area of the front cusp encompassing the picket hole has a lower hardness than that of the opposite disposed inner wall area. The intermediary center wall area preferably has a still lower hardness than the outer wall area. Thus, it is achieved that the front cusp of the nozzle element has a higher rigidity than in a known embodiment, without the valve seat face losing any hardness or that the protection of the outer wall area of the front cusp being unduly severly reduced against abrasive wear.

    摘要翻译: PCT No.PCT / DE86 / 00159 Sec。 一九八六年十二月十五日 102(e)1986年12月15日日期PCT提交1986年4月11日PCT公布。 公开号WO87 / 00889 日本1987年2月12日。用于内燃机的燃料喷嘴包括具有形成有锥形阀座面的前尖端的喷嘴元件。 在前尖部设置至少一个注射孔。 与阀座面相对设置的前尖部的外壁面的硬度比构成阀座面的内壁面的硬度低。 当注入孔从凹穴延伸时,优选地包围刺孔的前尖部的外壁区域的硬度比相对设置的内壁区域的硬度低。 中间中心壁区域优选地具有比外壁区域更低的硬度。 因此,实现了喷嘴元件的前尖部具有比已知实施例更高的刚性,而没有阀座面损失任何硬度,或者前尖端的外壁面积的保护被不适当地减少磨损 穿。

    Fuel injection nozzle
    4.
    发明授权
    Fuel injection nozzle 失效
    燃油喷嘴

    公开(公告)号:US4403740A

    公开(公告)日:1983-09-13

    申请号:US261062

    申请日:1981-05-06

    摘要: The invention relates to a fuel injection nozzle in which a control piston acts on the valve needle, which control piston can also be acted upon by another fluid with an arbitrarily changeable pressure. In this manner it is relatively simple to meet the ever increasing requirements to apply an influence of engine characteristic values to the fuel injection process.

    摘要翻译: 本发明涉及一种燃料喷射喷嘴,其中控制活塞作用在阀针上,该控制活塞也可以由具有任意可变压力的另一流体作用。 以这种方式,满足越来越多的要求来应用发动机特性值对燃料喷射过程的影响是相对简单的。

    Fuel injection nozzle
    5.
    发明授权
    Fuel injection nozzle 失效
    燃油喷嘴

    公开(公告)号:US4285471A

    公开(公告)日:1981-08-25

    申请号:US886323

    申请日:1978-03-13

    摘要: The invention relates to a fuel injection nozzle in which a control piston acts on the valve needle, which control piston can also be acted upon by another fluid with an arbitrarily changeable pressure. In this manner it is relatively simple to meet the ever increasing requirements to apply an influence of engine characteristic values to the fuel injection process.

    摘要翻译: 本发明涉及一种燃料喷射喷嘴,其中控制活塞作用在阀针上,该控制活塞也可以由具有任意可变压力的另一流体作用。 以这种方式,满足越来越多的要求来应用发动机特性值对燃料喷射过程的影响是相对简单的。

    Fuel injection nozzle
    7.
    发明授权
    Fuel injection nozzle 失效
    燃油喷嘴

    公开(公告)号:US4162043A

    公开(公告)日:1979-07-24

    申请号:US881931

    申请日:1978-02-28

    IPC分类号: F02M61/06 F02M61/04

    CPC分类号: F02M61/06

    摘要: A fuel injection nozzle in which the needle valve has been improved so that all similarly constructed nozzles will exhibit exactly the same flow cross section with a fully opened valve, and so that, with a constant injection pressure, the fuel quantity injected will not vary between the various nozzles serving the engine. The needle valve is provided with a cyclindrical section, which together with an edge region of the nozzle body defines the narrowest flow cross section obtainable with a spray-forming portion of the needle valve at a fully opened position of the needle valve.

    摘要翻译: 一种燃料喷射喷嘴,其中针阀已经改进,使得所有类似构造的喷嘴将具有与完全打开的阀完全相同的流动横截面,并且使得在恒定的喷射压力下,注入的燃料量将不会在 用于发动机的各种喷嘴。 针阀设置有循环部分,其与喷嘴体的边缘区域一起限定了在针阀的完全打开位置处由针阀的喷雾形成部分获得的最窄的流动横截面。

    Fuel injection nozzle for internal combustion engines
    8.
    发明授权
    Fuel injection nozzle for internal combustion engines 失效
    内燃机燃油喷嘴

    公开(公告)号:US4909446A

    公开(公告)日:1990-03-20

    申请号:US243299

    申请日:1988-08-17

    IPC分类号: F02M61/06 F02M61/18

    CPC分类号: F02M61/06

    摘要: Fuel injection nozzle for internal combustion engines comprising an inwardly opening valve needle (14) and a nozzle bore hole (20) into which a throttle pivot (18) of the valve needle (14) dips during an initial lift. The throttle pivot (18) is provided with at least two flattened portions (30, 32 and 30, 32, 40, respectively) for forming preferred pass-through cross sections in the nozzle bore hole (20), wherein at least two flattened portions (30, 32 and 32, 40, respectively) end in different cross-sectional planes of the throttle pivot (18). Accordingly, a stepwise enlargement of the total cross section in the nozzle bore hole (20) can be achieved during the initial lift of the valve needle (14) with manufacturing methods which can be controlled in a favorable manner.

    摘要翻译: PCT No.PCT / DE87 / 00009 Sec。 371日期1988年8月17日 102(e)日期1988年8月17日PCT提交1987年1月10日PCT公布。 第WO87 / 05077号公报 日期1987年8月27日。用于内燃机的燃料喷射喷嘴,包括向内打开的阀针(14)和喷嘴孔(20),阀针(14)的节气门枢轴(18)在初始 电梯。 节气门枢轴(18)设置有至少两个平坦部分(分别为30,32和30,32,40),用于在喷嘴钻孔(20)中形成优选的贯穿横截面,其中至少两个平坦部分 (30,32和32,40)分别在节流阀枢轴(18)的不同横截面上终止。 因此,可以通过可以以有利的方式控制的制造方法在阀针(14)的初始升程期间实现喷嘴孔眼(20)中的总横截面的逐步增大。

    Fuel injection nozzle for internal combustion engines
    9.
    发明授权
    Fuel injection nozzle for internal combustion engines 失效
    内燃机燃油喷嘴

    公开(公告)号:US4768719A

    公开(公告)日:1988-09-06

    申请号:US90152

    申请日:1987-07-17

    CPC分类号: F02M45/083 F02M2200/8015

    摘要: Fuel injection nozzle for internal combustion engines includes a first closing spring which acts continuously on the valve needle by means of a central pressure pin and, in addition, a second closing spring which acts continuously on the valve needle by means of a pressure piece after covering the distance of an initial stroke. The pressure piece is supported at the nozzle body by means of an intermediate bush during the initial stroke. The initial stroke is limited by means of the shoulders at the valve needle and the intermediate bush, whereas the total stroke is limited by means of the shoulders at the intermediate bush and the intermediate disk. Accordingly, the initial stroke can be adjusted very accurately to a desired magnitude merely by means of grinding the valve needle and does not change during the assembly of the injection nozzle.

    摘要翻译: PCT No.PCT / DE86 / 00453 Sec。 371日期1987年7月17日 102(e)日期1987年7月17日PCT申请日1986年11月7日PCT公布。 公开号WO87 / 03339 1987年6月4日。用于内燃机的燃料喷射喷嘴包括第一闭合弹簧,其通过中心压力销连续作用在阀针上,并且还包括第二闭合弹簧,其通过 在覆盖初始冲程的距离之后的压块的装置。 在初始冲程期间,压片通过中间衬套在喷嘴体处被支撑。 初始行程通过在阀针和中间衬套处的肩部受到限制,而总行程通过中间衬套和中间盘的肩部受到限制。 因此,仅通过研磨阀针就可以非常准确地将初始行程调整到所希望的大小,并且在注射喷嘴的组装期间不改变。

    Fuel injection nozzle
    10.
    发明授权
    Fuel injection nozzle 失效
    燃油喷嘴

    公开(公告)号:US4346846A

    公开(公告)日:1982-08-31

    申请号:US213714

    申请日:1980-12-05

    CPC分类号: F02M61/14 F02M55/005

    摘要: The invention proposes a fuel injection nozzle wherein the mounting, for example in the form of a cap nut or sleeve nut, used for clamping the fuel pressure line to the nozzle holder, is replaced by a cap screw, the outer thread of which engages a corresponding threaded area in the engine bore which is arranged to receive the nozzle. This has the result that, together with the mounting of the fuel line, the injection nozzle is simultaneously firmly clamped to the engine.

    摘要翻译: 本发明提出了一种燃料喷射喷嘴,其中用于将燃料压力管线夹紧到喷嘴座的用于将螺母或套筒螺母形式的安装件替换为盖螺钉,其外螺纹与 发动机孔中相应的螺纹区域被布置成接收喷嘴。 结果是,连同燃油管路的安装,喷射喷嘴同时牢固地夹在发动机上。