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    High-pressure fuel supply pump including an electromagnetically driven intake valve
    2.
    发明授权
    High-pressure fuel supply pump including an electromagnetically driven intake valve 有权

    公开(公告)号：US10718296B2

    公开(公告)日：2020-07-21

    申请号：US16111619

    申请日：2018-08-24

    Applicant: Hitachi Automotive Systems, Ltd.

    Inventor： Masahiko Hayatani ,  Satoshi Usui ,  Hideki Machimura ,  Tatsuo Kawano ,  Syunsuke Aritomi ,  Shingo Tamura

    IPC: F04B17/04 ,  F04B49/22 ,  F02M21/02 ,  F02M59/36 ,  F02M59/46

    Abstract: A high-pressure fuel supply pump including an electromagnetically driven intake valve is configured such that a pressure equalizing hole is provided in the valve stopper positioned between the valve and a pressurizing chamber. The pressure equalization hole connects a spring storage space, provided between a valve and a valve stopper, with a surrounding fluid passage. The high-pressure fuel supply pump is further configured such that an opening of the pressure equalizing hole at the spring storage chamber side is open at a position at the inner side of a diameter of the spring. Since the pressure in the pressurizing chamber can be introduced into the inner side of the spring without traversing the spring, the unstable behavior of the spring or the valve due to the introduced pressure eliminated. Since the force applied to the valve when the valve closes is stabilized, the closing timing of the valve is stable.

    High-pressure fuel supply pump
    4.
    发明授权
    High-pressure fuel supply pump 有权

    公开(公告)号：US10371109B2

    公开(公告)日：2019-08-06

    申请号：US15105973

    申请日：2014-11-17

    Applicant: Hitachi Automotive Systems, Ltd.

    Inventor： Yuta Saso ,  Atsuji Saito ,  Satoshi Usui ,  Shingo Tamura ,  Moritsugu Akiyama ,  Hiroyuki Yamada ,  Atsushi Hohkita

    IPC: F02M59/44 ,  F04B49/24 ,  F02M59/46 ,  F04B53/16 ,  F02M59/48 ,  F02M59/02 ,  F02M59/36

    Abstract: A high-pressure fuel supply pump in which a relief valve mechanism is not detached by a force generated by a differential pressure between an inlet side and an output side of a relief valve mechanism is obtained. According to the present invention, in order to obtain the high-pressure fuel supply pump, the relief valve mechanism of the high-pressure fuel supply pump is oriented from a downstream side of a discharge valve to an upstream side of the discharge valve, and the output side of the relief valve mechanism is inserted from the upstream side of the discharge valve into the pump housing, and the relief valve mechanism is fixed with press fitting. Therefore, a force exerted by the differential pressure between the inlet side pressure and the output side pressure of the relief valve mechanism is exerted in a direction in which the relief valve mechanism is inserted, so that the relief valve mechanism can be prevented from being detached.

    High-pressure fuel supply pump including an electromagnetically driven intake valve
    5.
    发明授权
    High-pressure fuel supply pump including an electromagnetically driven intake valve 有权

    公开(公告)号：US10087889B2

    公开(公告)日：2018-10-02

    申请号：US14368041

    申请日：2012-11-28

    Applicant: Hitachi Automotive Systems, Ltd.

    Inventor： Masahiko Hayatani ,  Satoshi Usui ,  Hideki Machimura ,  Tatsuo Kawano ,  Syunsuke Aritomi ,  Shingo Tamura

    IPC: F04B17/04 ,  F04B49/22 ,  F02M21/02 ,  F02M59/36 ,  F02M59/46

    Abstract: A high-pressure fuel supply pump including an electromagnetically driven intake valve is configured such that a pressure equalizing hole is provided in the valve stopper positioned between the valve and a pressurizing chamber. The pressure equalization hole connects a spring storage space, provided between a valve and a valve stopper, with a surrounding fluid passage. The high-pressure fuel supply pump is further configured such that an opening of the pressure equalizing hole at the spring storage chamber side is open at a position at the inner side of a diameter of the spring. Since the pressure in the pressurizing chamber can be introduced into the inner side of the spring without traversing the spring, the unstable behavior of the spring or the valve due to the introduced pressure eliminated. Since the force applied to the valve when the valve closes is stabilized, the closing timing of the valve is stable.

    HIGH-PRESSURE FUEL SUPPLY PUMP INCLUDING AN ELECTROMAGNETICALLY DRIVEN INTAKE VALVE
    7.
    发明申请
    HIGH-PRESSURE FUEL SUPPLY PUMP INCLUDING AN ELECTROMAGNETICALLY DRIVEN INTAKE VALVE 审中-公开
    高压燃油泵，包括电磁驱动阀

    公开(公告)号：US20140377109A1

    公开(公告)日：2014-12-25

    申请号：US14368041

    申请日：2012-11-28

    Applicant: Hitachi Automotive Systems, Ltd.

    Inventor： Masahiko Hayatani ,  Satoshi Usui ,  Hideki Machimura ,  Tatsuo Kawano ,  Syunsuke Aritomi ,  Shingo Tamura

    IPC: F02M21/02 ,  F04B49/22

    CPC classification number: F02M21/0245 ,  F02M59/366 ,  F02M59/368 ,  F02M59/462 ,  F02M59/464 ,  F02M2200/304 ,  F02M2200/50 ,  F04B17/04 ,  F04B49/225

    Abstract: A high-pressure fuel supply pump including an electromagnetically driven intake valve is configured such that a pressure equalizing hole is provided in the valve stopper positioned between the valve and a pressurizing chamber. The pressure equalization hole connects a spring storage space, provided between a valve and a valve stopper, with a surrounding fluid passage. The high-pressure fuel supply pump is further configured such that an opening of the pressure equalizing hole at the spring storage chamber side is open at a position at the inner side of a diameter of the spring. Since the pressure in the pressurizing chamber can be introduced into the inner side of the spring without traversing the spring, the unstable behavior of the spring or the valve due to the introduced pressure eliminated. Since the force applied to the valve when the valve closes is stabilized, the closing timing of the valve is stable.

    Abstract translation: 包括电磁进气阀的高压燃料供给泵被构造成使得在阀和加压室之间的阀止动件中设置有均压孔。 压力平衡孔将设置在阀和阀止动器之间的弹簧储存空间连接到周围的流体通道。 高压燃料供给泵进一步构造成使得弹簧储存室侧的均压孔的开口在弹簧的直径的内侧的位置处开口。 由于加压室中的压力可以不通过弹簧而被引入弹簧的内侧，所以消除了由于引入的压力引起的弹簧或阀的不稳定行为。 由于在阀关闭时施加到阀的力稳定，因此阀的关闭时机是稳定的。

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