High pressure fuel pump with parallel cooling fuel flow
    4.
    发明授权
    High pressure fuel pump with parallel cooling fuel flow 有权
    高压燃油泵并联冷却燃油

    公开(公告)号:US08308450B2

    公开(公告)日:2012-11-13

    申请号:US12398570

    申请日:2009-03-05

    IPC分类号: F04B39/02 F04B39/06

    摘要: A high pressure fuel pump with parallel cooling fuel flow is disclosed wherein a fuel pump barrel having a substantially cylindrical plunger bore with an annular drain groove is provided. A first fuel path is provided that fluidically couples a fuel supply to an annular cooling ring formed on the outer surface of the barrel. The first fuel path further fluidically couples the annular cooling ring to a storage tank via an exit passage. A second, parallel fuel path is provided that fluidically couples the first fuel path to the drain groove, and further includes a drain passage fluidically coupled to the drain groove and the first fuel path via the storage tank.

    摘要翻译: 公开了一种具有平行冷却燃料流的高压燃料泵,其中具有具有环形排水槽的基本上圆柱形的柱塞孔的燃料泵筒。 提供了第一燃料通道,其将燃料供给流体地耦合到形成在筒的外表面上的环形冷却环。 第一燃料通路进一步通过出口通道将环形冷却环流体耦合到储罐。 提供了第二平行燃料通道,其将第一燃料路径流体耦合到排水沟槽,并且还包括排水通道,其通过储罐与流体槽和第一燃料路径流体连接。

    Fuel pump with a guided tappet assembly and methods for guiding and assembly
    6.
    发明授权
    Fuel pump with a guided tappet assembly and methods for guiding and assembly 有权
    具有引导挺杆组件的燃油泵及其导向和组装方法

    公开(公告)号:US07311087B2

    公开(公告)日:2007-12-25

    申请号:US10994291

    申请日:2004-11-23

    IPC分类号: F02M37/04

    摘要: A fuel pump for an internal combustion engine including a fuel pump housing, a cylindrical bore having a central axis and being defined by a bore wall surface, a receiving hole formed in the housing, and a tappet assembly received in the cylinder bore. The tappet assembly includes an outer peripheral surface with an elongated key slot longitudinally extending parallel to the central axis. A guide key partially received in the receiving hole is provided, the guide key including a head that extends into the cylindrical bore to engage the elongated key slot of the tappet assembly. The head has an outer dimension that is larger than a dimension of the receiving hole along the central axis. Methods for guiding a reciprocating tappet assembly in a fuel pump and assembling a fuel pump are also provided.

    摘要翻译: 一种用于内燃机的燃料泵,其包括燃料泵壳体,具有中心轴线并由孔壁表面限定的圆柱形孔,形成在壳体中的接收孔和容纳在气缸孔中的挺杆组件。 挺杆组件包括具有纵向延伸平行于中心轴线的细长键槽的外周表面。 提供部分地容纳在接收孔中的引导键,该引导键包括延伸到圆柱形孔中以与挺杆组件的细长键槽接合的头部。 头部具有大于沿着中心轴线的接收孔的尺寸的外部尺寸。 还提供了用于将往复挺杆组件引导到燃料泵中并组装燃料泵的方法。

    Juncture for a high pressure fuel system
    8.
    发明授权
    Juncture for a high pressure fuel system 有权
    适用于高压燃油系统

    公开(公告)号:US07021291B2

    公开(公告)日:2006-04-04

    申请号:US10743823

    申请日:2003-12-24

    IPC分类号: F02M55/02

    摘要: A juncture and method for changing direction of fuel flow in a high pressure fuel injection system such as a common rail and/or a fuel pump, the juncture comprising a body, a first passage formed in the body having a first diameter and a longitudinal axis extending therethrough, the first passage including a groove positioned along a portion of the longitudinal axis, and a second passage formed in the body having a second diameter, a central axis extending therethrough, and an opening, the opening of the second passage being provided in the groove of the first passage to allow fluidic communication between the second passage and the first passage so that stresses at the juncture caused by high pressure fuel changing direction of flow is reduced.

    摘要翻译: 一种用于改变诸如共轨和/或燃料泵的高压燃料喷射系统中的燃料流动方向的接合和方法,所述接合部包括主体,形成在主体中的第一通道具有第一直径和纵向轴线 所述第一通道包括沿着所述纵向轴线的一部分定位的凹槽,以及形成在所述主体中的第二通道,所述第二通道具有第二直径,穿过其延伸的中心轴线和开口,所述第二通道的开口设置在 所述第一通道的槽允许第二通道和第一通道之间的流体连通,使得由高压燃料改变流动方向引起的接合处的应力减小。