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    • 5. 发明授权
    • Electromagnetic drive mechanism and a high-pressure fuel supply pump
    • 电磁驱动机构和高压燃油供应泵
    • US07398768B2
    • 2008-07-15
    • US11354851
    • 2006-02-16
    • Satoshi UsuiKenichiro TokuoHiroyuki YamadaMasami AbeHiroshi Odakura
    • Satoshi UsuiKenichiro TokuoHiroyuki YamadaMasami AbeHiroshi Odakura
    • F02M37/04
    • F02D41/20F02D2041/2027F02D2041/2058F02M59/102F02M59/367F02M63/0017F02M63/0035F02M63/0225F02M63/024F02M2200/09F02M2200/315
    • The objective of the present invention is to dampen operating sounds of an electromagnetic drive mechanism used for a variable displacement control mechanism in a high-pressure fuel supply pump to reduce an individual difference depending on apparatus due to the change over time or installation tolerance.To achieve the above objective, the present invention is configured such that before the electromagnetic drive mechanism supplies a drive force to a plunger which is electromagnetically driven by the electromagnetic drive mechanism, another displacement force situates the plunger in a specific position. When compared to an occasion where the plunger is displaced all strokes by a magnetic biasing force, the above configuration is able to reduce the force of impact on a member (for example, valve body) mounted to the plunger and a restricting member, thereby damping the collision noise. Furthermore, since an extra member, such as a damping member, is not required, individual difference depending on apparatus do not easily occur.
    • 本发明的目的是抑制用于高压燃料供应泵中的可变排量控制机构的电磁驱动机构的操作声音,以减少由于随着时间的变化或安装公差的变化而导致的装置的个体差异。 为了实现上述目的,本发明被构造成使得在电磁驱动机构向由电磁驱动机构进行电磁驱动的柱塞供给驱动力之前,另一个位移力使柱塞位于特定位置。 当与柱塞通过磁偏置力移动所有冲程的情况相比,上述构造能够减小对安装到柱塞和限制构件的构件(例如,阀体)的冲击力,从而阻尼 碰撞噪声。 此外,由于不需要诸如阻尼构件的额外构件,因此不容易发生根据装置的个体差异。