Engine fuel pump mounting structure
    1.
    发明授权
    Engine fuel pump mounting structure 失效
    发动机燃油泵安装结构

    公开(公告)号:US06895942B2

    公开(公告)日:2005-05-24

    申请号:US09923914

    申请日:2001-08-08

    Abstract: A rocker shaft holder that supports a rocker shaft and a camshaft holder that supports an intake camshaft and an exhaust camshaft in association with the rocker shaft holder are superimposed and connected to each other on the upper surface of a cylinder head, and a fuel pump that supplies fuel at high pressure to an injector is driven by a journal on a shaft end of the exhaust camshaft. The fuel pump is fastened to the cylinder head by means of a bolt; to the integral type camshaft holder, in which a plurality of bearings are integrally connected together via connecting parts, by means of a bolt; and to the rocker shaft holder by means of bolts, and the rigidity of that parts on which the fuel pump is mounted is thereby enhanced to reliably support the camshaft and the rocker shaft.

    Abstract translation: 支撑摇臂轴的摇臂轴支架和支撑与摇臂轴保持器相关联的进气凸轮轴和排气凸轮轴的凸轮轴保持器在气缸盖的上表面上彼此叠置并连接,并且燃料泵 在喷射器的高压下供给燃料由排气凸轮轴的轴端的轴颈驱动。 燃油泵通过螺栓固定在气缸盖上; 通过螺栓将多个轴承通过连接部分一体地连接在一体式凸轮轴保持器上; 并通过螺栓与摇臂轴保持器相连,从而提高了安装燃油泵的部件的刚度,从而可靠地支撑凸轮轴和摇杆轴。

    High pressure fuel pump having a bellows sealing arrangement
    2.
    发明授权
    High pressure fuel pump having a bellows sealing arrangement 失效
    具有波纹管密封装置的高压燃料泵

    公开(公告)号:US6142060A

    公开(公告)日:2000-11-07

    申请号:US76704

    申请日:1998-05-13

    Abstract: There is provided a high pressure fuel pump which includes a reliable fuel seal having a long durability and which can be produced at a relatively low cost. When a rotating shaft 4 is rotated to rotate a swash plate 7, such rotation is transmitted to a piston shoe guide plate 8 through a thrust ball bearing 9. Since the plate 8 is supported by a spherical portion 16 of a rod 14 mounted to a body 12, the plate 8 performs a precession to recurrently operate a plurality of fuel pumps 21 to 25 disposed around the rod 14. Each of the fuel pumps 21 to 25 includes a bellows provided between an outer end of the piston and the body 12, and the bellows completely seals a fuel leaked from a sliding clearance between the piston and the cylinder. Since the leaked fuel is introduced into a return passage 19 through a groove formed in an outer wall of the cylinder, a large internal pressure is not applied to the bellows and therefore, the bellows can be made of a low-priced material such as Teflon.

    Abstract translation: 提供了一种高压燃料泵,其包括可靠的燃料密封件,其具有长的耐久性并且可以以相对低的成本生产。 当旋转轴4旋转以旋转斜盘7时,这种旋转通过推力球轴承9传递到活塞靴引导板8.由于板8由安装到 主体12,板8进行旋转以循环地操作设置在杆14周围的多个燃料泵21至25.每个燃料泵21至25包括设置在活塞的外端和主体12之间的波纹管, 并且波纹管完全密封从活塞和气缸之间的滑动间隙泄漏的燃料。 由于泄漏的燃料通过形成在气缸的外壁中的凹槽引入回流通道19中,因此不会对波纹管施加大的内部压力,因此波纹管可以由诸如特氟隆的低价材料制成 。

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