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    Electromagnetic Solenoid and Fuel Injection Valve
    21.
    发明申请
    Electromagnetic Solenoid and Fuel Injection Valve 审中-公开

    公开(公告)号：US20190078543A1

    公开(公告)日：2019-03-14

    申请号：US16084365

    申请日：2017-02-16

    Applicant: Hitachi Automotive Systems, Ltd.

    Inventor： Akihiro YAMAZAKI ,  Takahiro SAITO ,  Nobuaki KOBAYASHI ,  Akiyasu MIYAMOTO ,  Yoshihito YASUKAWA

    IPC: F02M51/06 ,  F16K31/06

    Abstract: Electromagnetic solenoid has movable core having end surface that is formed between inner circumferential surface and outer circumferential surface of movable core; and fixed core having end surface that is formed between inner circumferential surface and outer circumferential surface of fixed core and faces the end surface of movable core. Ring-shaped protruding portion is formed at least either one of the end surface of the movable core or the end surface of the fixed core. Protruding portion is provided at a position that is shifted to a radially inner circumferential side of the end surface. A length between apex and inner circumferential edge of protruding portion is shorter than a length between the apex and an outer circumferential edge of protruding portion.

    FUEL INJECTION VALVE
    25.
    发明申请
    FUEL INJECTION VALVE 审中-公开

    公开(公告)号：US20170260952A1

    公开(公告)日：2017-09-14

    申请号：US15510299

    申请日：2015-07-10

    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.

    Inventor： Atsushi NAKAI ,  Yoshihito YASUKAWA ,  Masashi SUGAYA ,  Kiyotaka OGURA ,  Takao MIYAKE ,  Ryo KUSAKABE

    IPC: F02M61/20

    CPC classification number: F02M61/20 ,  F02M51/0685 ,  F02M61/168 ,  F02M2200/8061

    Abstract: A fuel injection valve includes: a valve member; an anchor configured to be relatively displaceable in a valve opening-and-closing direction with respect to the valve member; a fixed core; a first spring biasing the valve member in a valve closing direction; a second spring biasing the anchor in the valve opening direction from an opposite side of the fixed core; and a third spring biasing the anchor in the valve closing direction from the fixed core side and has a biasing force smaller than a biasing force of the first spring and larger than a biasing force of the second spring where engagement portions are provided in both the anchor and the valve member to be engaged with each other when the anchor is displaced in the valve opening direction with respect to the valve member, thereby regulating the displacement of the anchor in the valve opening direction.

    FUEL INJECTOR
    26.
    发明申请
    FUEL INJECTOR 审中-公开

    公开(公告)号：US20170241389A1

    公开(公告)日：2017-08-24

    申请号：US15502351

    申请日：2015-07-01

    Applicant: Hitachi Automotive Systems, Ltd.

    Inventor： Yoshihito YASUKAWA ,  Takao MIYAKE ,  Atsushi NAKAI ,  Masashi SUGAYA ,  Akiyasu MIYAMOTO ,  Kiyotaka OGURA ,  Motoyuki ABE

    IPC: F02M51/06 ,  F02M61/04

    CPC classification number: F02M51/061 ,  F02M51/06 ,  F02M51/0625 ,  F02M61/04 ,  F02M61/20 ,  F02M2200/50

    Abstract: An object of the present invention is to provide a fuel injector which can promote convergence of a motion of a valve body while a valve is opened and promote stabilization of an injection amount. In the present invention, a fuel injector includes a movable iron core 404, a fixed iron core 401, a first spring member 405, a second spring member 406, contact portions 102c and 404b′, and a gap g1. The movable iron core 404 is provided relatively displaceable to a valve body 102. The fixed iron core 401 is opposed to the movable iron core 404. The first spring member 405 energizes the valve body 102 in a valve closing direction. The second spring member 406 energizes the movable iron core 404 in a valve closing direction. The contact portions 102c and 404b′ are in contact with each other in a case where the movable iron core 404 displaces in a valve opening direction with respect to the valve body 102. The gap g1 is formed between the contact portions 102c and 404b′ in a valve closing state. In a state in which the movable iron core 404 and the valve body 102 move in different directions after the movable iron core 404 collides with the fixed iron core 401 while a valve is opened, a spring force is not applied between the movable iron core 404 and the valve body 102.

    Electromagnetic Fuel Injection Valve
    27.
    发明申请
    Electromagnetic Fuel Injection Valve 审中-公开
    电磁燃油喷射阀

    公开(公告)号：US20170067430A1

    公开(公告)日：2017-03-09

    申请号：US15355380

    申请日：2016-11-18

    Applicant: Hitachi Automotive Systems, Ltd.

    Inventor： Motoyuki ABE ,  Ryo KUSAKABE ,  Hideharu EHARA ,  Yoshihito YASUKAWA

    IPC: F02M51/06 ,  F02M61/20

    CPC classification number: F02M51/0675 ,  F02M51/0685 ,  F02M61/12 ,  F02M61/20

    Abstract: An electromagnetic fuel injection valve includes a valve element, a movable element, a magnetic core, and a coil. The movable element includes an inner movable element that faces a radially inner part of the magnetic attractive surface of the magnetic core in a moving direction of the valve element. The inner movable element is biased in a valve closing direction by a first spring. The movable element also includes an outer movable element that faces a radially outer part of the magnetic attractive surface of the magnetic core in the moving direction of the valve element. The outer movable element biased in a valve opening direction by a second spring.

    Abstract translation: 电磁燃料喷射阀包括阀元件，可动元件，磁芯和线圈。 可动元件包括在阀元件的移动方向上面向磁芯的吸引磁性表面的径向内部的内部可移动元件。 内部可移动元件通过第一弹簧以关闭方向偏置。 可移动元件还包括外部可移动元件，该外部可移动元件在阀元件的移动方向上面对磁芯的吸引磁性表面的径向外部。 外部可动元件通过第二弹簧以阀打开方向偏压。

    Fuel Injection Valve
    28.
    发明申请
    Fuel Injection Valve 审中-公开

    公开(公告)号：US20160305385A1

    公开(公告)日：2016-10-20

    申请号：US15189069

    申请日：2016-06-22

    Applicant: Hitachi Automotive Systems, Ltd.

    Inventor： Yoshio OKAMOTO ,  Yoshihito YASUKAWA ,  Noriyuki MAEKAWA ,  Nobuaki KOBAYASHI ,  Takahiro SAITO

    IPC: F02M61/18 ,  F02M61/16 ,  F02M51/06

    Abstract: One passage for swirling is formed in an orifice plate fixed on a nozzle body. Two swirl chambers in which fuel is caused to swirl so that the fuel has swirling force are provided at an end of the one passage for swirling on the downstream side of the flow direction of fuel. Therefore, the collision between the swirling flow in the swirl chamber and the fuel flowing in the passage for swirling is mitigated, and the swirling flow can be smoothly produced to promote pulverization of sprays injected from fuel injection ports.

    Drive Device for Fuel Injection Device, and Fuel Injection System
    29.
    发明申请
    Drive Device for Fuel Injection Device, and Fuel Injection System 有权
    燃油喷射装置驱动装置和燃油喷射系统

    公开(公告)号：US20160177855A1

    公开(公告)日：2016-06-23

    申请号：US14907908

    申请日：2013-07-29

    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.

    Inventor： Ryo KUSAKABE ,  Motoyuki ABE ,  Ayumu HATANAKA ,  Toshihiro AONO ,  Teppei HIROTSU ,  Hideyuki SAKAMOTO ,  Masahiro TOYOHARA ,  Osamu MUKAIHARA ,  Takao FUKUDA ,  Yoshihito YASUKAWA ,  Akiyasu MIYAMOTO

    IPC: F02D41/20 ,  F02M65/00 ,  F02M51/06

    CPC classification number: F02D41/20 ,  F02D41/0085 ,  F02D2041/2003 ,  F02D2041/2037 ,  F02D2041/2055 ,  F02D2041/2058 ,  F02D2200/063 ,  F02M51/0685 ,  F02M61/1833 ,  F02M65/005

    Abstract: A drive device capable of detecting individual variations of an injection quantity of a fuel injection device of each cylinder and adjusting a current waveform provided to an injection pulse width and a solenoid such that the individual variations of the fuel injection devices are reduced. The fuel injection device in the present invention includes a valve body that closes a fuel passage by coming into contact with a valve seat and opens the fuel passage by separating from the valve seat and a magnetic circuit constructed of a solenoid, a fixed core, a nozzle holder, a housing, and a needle and when a current is supplied to the solenoid, a magnetic suction force acts on the needle and the needle has a function to open the valve body by colliding against the valve body after performing a free running operation and changes of acceleration of the needle due to collision of the needle against the valve body are detected by a current flowing through the solenoid.

    Abstract translation: 一种驱动装置，能够检测每个气缸的燃料喷射装置的喷射量的各个变化，并且调节提供给喷射脉冲宽度的电流波形和螺线管，使得燃料喷射装置的各个变化减小。 本发明的燃料喷射装置包括阀体，该阀体通过与阀座接触而关闭燃料通路，并且通过与阀座分离而打开燃料通道，以及由螺线管，固定铁芯， 喷嘴保持器，壳体和针，并且当向螺线管供应电流时，磁吸力作用在针上，并且针具有通过在执行自由运行操作之后与阀体碰撞来打开阀体的功能 并且通过流过螺线管的电流来检测针头与阀体的碰撞引起的针的加速度的变化。

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