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    • 4. 发明授权
    • Fluid pump and fuel dispenser
    • 流体泵和燃油分配器
    • US08512011B2
    • 2013-08-20
    • US11960299
    • 2007-12-19
    • Bengt I. LarssonMarie Hakansson
    • Bengt I. LarssonMarie Hakansson
    • F04B35/04F04B17/04
    • B67D7/64B67D7/04B67D7/048F04B17/044F04B35/045
    • A fluid pump for a fuel dispensing unit comprises a pump housing with a first chamber and a second chamber, each chamber having a fluid inlet valve and a fluid outlet valve, respectively. The chambers are separated by a movable piston arranged to repeatedly decrease and increase the volumes of the chambers. The piston comprises a magnetic device, and an electromagnetic control configured to move the piston by altering a magnetic field, for repeatedly decreasing and increasing the volume of the chambers. A controllable fluid flow passage connected to first chamber and to the second chamber that allows fluid to pass from the first chamber to the second chamber without passing through the any of the fluid inlet valves or the fluid outlet valves so that when there is a flow of fuel from the first chamber to the second chamber via the fluid flow passage and when the piston moves towards the first side the first outlet valve and the second inlet valve remain closed during operation.
    • 用于燃料分配单元的流体泵包括具有第一室和第二室的泵壳体,每个室分别具有流体入口阀和流体出口阀。 这些室被可移动的活塞分开,可移动的活塞被布置成反复地减小和增加室的体积。 活塞包括磁性装置和电磁控制器,其被配置为通过改变磁场来移动活塞,以重复地减小和增加腔室的体积。 连接到第一室和第二室的可控流体流动通道,其允许流体从第一室传递到第二室,而不通过任何流体入口阀或流体出口阀,使得当流动 燃料经由流体流动通道从第一室到第二室,并且当活塞朝向第一侧移动时,第一出口阀和第二入口阀在操作期间保持关闭。