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公开(公告)号：US20190003436A1
公开(公告)日：2019-01-03
申请号：US16065966
申请日：2016-11-14
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Yoshihito YASUKAWA , Kiyotaka OGURA , Takao MIYAKE , Akira IIZUKA , Akiyasu MIYAMOTO , Kazuki YOSHIMURA
Abstract: An object of the present invention is to provide a fuel injection device in which variations in an injection flow rate for each injection is suppressed and an injection amount is stabilized.The fuel injection device according to the present invention includes: a valve element that is seated on or unseated from a valve seat; a plurality of guide parts (302a, 302b, 302c) that slidably guide the valve element; and flow paths (306a, 306b, 306c) sandwiched between the guide parts in a circumferential direction. In the fuel injection device, one guide part (302a) among the plurality of guide parts is formed to have a longer circumferential length than that of other guide parts (302b, 302c).
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公开(公告)号：US20180209366A1
公开(公告)日：2018-07-26
申请号：US15891909
申请日：2018-02-08
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
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 close 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.
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公开(公告)号：US20190063387A1
公开(公告)日：2019-02-28
申请号：US16169598
申请日：2018-10-24
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Yoshihito YASUKAWA , Hideharu EHARA , Tohru ISHIKAWA , Motoyuki ABE , Ryo KUSAKABE
Abstract: A fuel injection valve includes a valve body, a coil, an inner fixed iron core that is arranged on an inner peripheral side of the coil, and an outer fixed iron core that is arranged on an outer peripheral side of the coil. The fuel injection valve also includes a movable element that is configured to be attracted to the inner fixed iron core and the outer fixed iron core, wherein the movable element is configured to be separable from the valve body and is configured to move the valve body.
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公开(公告)号：US20170241391A1
公开(公告)日：2017-08-24
申请号：US15591218
申请日：2017-05-10
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Yoshihito YASUKAWA , Kiyotaka OGURA , Takao MIYAKE , Eiji ISHII , Motoyuki ABE , Tohru ISHIKAWA
CPC classification number: F02M61/1813 , F02M51/0671 , F02M51/0675 , F02M61/1833 , F02M67/12
Abstract: A spark-ignition direct fuel injection valve includes, at least, a seat member provided with a fuel injection hole and a valve seat and a valve body which controls fuel injection from the injection hole by contacting and separating from the valve seat. In the spark-ignition direct fuel injection valve: the injection hole has an injection hole inlet which is open inwardly of the seat member and an injection hole outlet which is open outwardly of the seat member; an opening edge of the injection hole inlet has a first round-chamfered portion formed on an upstream side with respect to a fuel flow toward the injection hole inlet; and an extending length (L) of the injection hole does not exceed three times a hole diameter (D) of the injection hole.
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公开(公告)号：US20150377202A1
公开(公告)日：2015-12-31
申请号：US14765489
申请日：2014-01-24
Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
Inventor： Eiji ISHII , Motoyuki ABE , Yoshihito YASUKAWA , Kiyotaka OGURA , Hideharu EHARA , Tohru ISHIKAWA
IPC: F02M63/00
CPC classification number: F02M63/0077 , F02M51/0671 , F02M61/12 , F02M61/1813 , F02M61/1833 , F02M61/184 , F02M61/1846 , F02M61/1873 , F02M61/188 , F02M63/0078
Abstract: In a fuel injection valve used in an internal combustion engine, fuel spray travel distance is shortened.There is provided a fuel injection valve including a seat member, in which the seat member includes a conical seat surface that seats fuel by coming in contact with a valve body, and inlet opening portions of a plurality of fuel injection holes on the conical seat surface, and is configured such that an axis of the injection hole connecting the centers of an inlet and an outlet of the fuel injection hole is along a plurality of different conical surfaces, and in which, in an outlet section that is configured of a plane parallel to an inlet section of the inlet opening portion of the fuel injection hole and is positioned at the outlet of the fuel injection hole, the seat member includes the injection hole in which a major axis direction of an ellipse of the outlet section has an inclination angle of greater than 0 degrees with respect to a straight line in a fuel injection direction, which is obtained by projecting the axis of the injection hole on the outlet section, and an inclination angle of a degree before being perpendicular to the straight line in the fuel injection direction.
Abstract translation: 在内燃机中使用的燃料喷射阀中，燃料喷射行驶距离缩短。 提供了一种燃料喷射阀，其包括座椅构件，座椅构件包括通过与阀体接触而抵靠燃料的锥形座面，以及锥形座表面上的多个燃料喷射孔的入口开口部 并且被构造成使得连接燃料喷射孔的入口和出口的中心的喷射孔的轴线沿着多个不同的锥形表面，并且其中在由平行的平面构成的出口部分 到燃料喷射孔的入口开口部的入口部并且位于燃料喷射孔的出口处，座椅构件包括喷射孔，其中出口部的椭圆的长轴方向具有倾斜角 相对于燃料喷射方向上的直线大于0度，其通过将喷射孔的轴线突出在出口部分上而获得，并且倾斜度 在燃料喷射方向垂直于直线之前的角度角。
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Patent Agency Ranking
公开(公告)号：US20140027541A1
公开(公告)日：2014-01-30
申请号：US13948844
申请日：2013-07-23
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Yoshio OKAMOTO , Yoshihito YASUKAWA , Noriyuki MAEKAWA , Eiji ISHII , Kazuki YOSHIMURA , Takahiro SAITO , Nobuaki KOBAYASHI
IPC: F02M61/16
CPC classification number: F02M61/163 , F02M51/0682 , F02M61/162 , F02M61/1853 , F02M61/188
Abstract: A fuel injection valve which ensures improved uniformity of a swirl flow in a circumferential direction. It includes: a valve element provided movably; a nozzle body with an opening downstream, including a valve seat face for the valve element to rest on in a valve closed state; a swirling path communicating with the opening of the nozzle body, located downstream of the opening; a swirling chamber located downstream of the swirling path, in which fuel is swirled and given a swirling force; and a fuel injection hole formed at the bottom of the swirling chamber to inject fuel outward. The swirling chamber has an inner wall surface which makes a spiral curve. The swirling chamber and the fuel injection hole are formed so that the center of a base circle for the spiral curve coincides with the center of the fuel injection hole.
Abstract translation: 一种燃料喷射阀，其确保旋转流在圆周方向上的均匀性得到改善。 它包括：可移动地设置的阀元件; 具有下游开口的喷嘴体，包括用于阀元件在阀关闭状态下静止的阀座面; 与喷嘴体的开口连通的旋转路径，位于开口的下游; 位于旋转路径下游的旋转室，其中燃料旋转并产生旋转力; 以及形成在旋转室的底部的燃料喷射孔，以向外喷射燃料。 旋转室具有形成螺旋曲线的内壁表面。 旋转室和燃料喷射孔形成为使得螺旋曲线的基圆的中心与燃料喷射孔的中心重合。
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公开(公告)号：US20130175367A1
公开(公告)日：2013-07-11
申请号：US13737645
申请日：2013-01-09
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Yoshio OKAMOTO , Yoshihito YASUKAWA , Noriyuki MAEKAWA , Nobuaki KOBAYASHI , Takahiro SAITO
IPC: F02M51/06
CPC classification number: F02M61/1853 , F02M51/061 , F02M51/0664 , F02M61/162
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.
Abstract translation: 用于旋转的一个通道形成在固定在喷嘴体上的孔板中。 在燃料流动方向下游侧的一个通道的端部设置有两个涡流室，其中使燃料旋转，使得燃料具有旋转力。 因此，能够缓和涡流室内的回旋流与在旋转通路中流动的燃料之间的碰撞，能平滑地产生回旋流，促进从燃料喷射口喷射的喷雾的粉碎。
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公开(公告)号：US20170298882A1
公开(公告)日：2017-10-19
申请号：US15640838
申请日：2017-07-03
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Yoshihito YASUKAWA , Hideharu EHARA , Tohru ISHIKAWA , Motoyuki ABE , Ryo KUSAKABE
CPC classification number: F02M51/0657 , F02D41/20 , F02M45/00 , F02M45/08 , F02M51/061 , F02M51/0625 , F02M51/066 , F02M61/04 , F02M61/10 , F02M61/20 , F02M2200/08
Abstract: A fuel injection valve includes a valve body, a coil, an inner fixed iron core that is arranged on an inner peripheral side of the coil, and an outer fixed iron core that is arranged on an outer peripheral side of the coil. The fuel injection valve also includes a movable element that is configured to be attracted to the inner fixed iron core and the outer fixed iron core, wherein the movable element is configured to be separable from the valve body and is configured to move the valve body.
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公开(公告)号：US20160230722A1
公开(公告)日：2016-08-11
申请号：US15134642
申请日：2016-04-21
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Ryo KUSAKABE , Motoyuki ABE , Yoshihito YASUKAWA , Noriyuki MAEKAWA , Takuya MAYUZUMI , Tohru ISHIKAWA
CPC classification number: F02M51/0653 , F02D41/20 , F02D2041/2013 , F02D2041/2055 , F02D2041/2058 , F02D2200/0618 , F02M45/12 , F02M51/0671 , F02M51/0685 , F02M59/366 , F02M61/1833 , F02M63/0033
Abstract: A method of controlling a fuel injection device that can control a small amount of injection is provided. A fuel injection device for use in an internal combustion engine, includes: a valve body that can open and close a fuel passage, a needle that transfers a force with the valve body, and executes valve opening/closing operation, and an electromagnet that includes a coil and a magnetic core provided as a driver for driving the needle, and a cylindrical nozzle holder disposed on an outer periphery of the magnetic core and the needle, in which a current is supplied to the coil to exert a magnetic attractive force between the magnetic core and the needle to open the valve body.
Abstract translation: 提供了一种控制能够控制少量喷射的燃料喷射装置的方法。 一种用于内燃机的燃料喷射装置，包括：能够打开和关闭燃料通道的阀体，与阀体传递力并执行阀打开/关闭操作的针，以及电磁体，其包括 设置为用于驱动针的驱动器的线圈和磁芯，以及设置在磁芯和针的外周上的圆柱形喷嘴保持架，其中电流被供应到线圈以在第一和第二磁芯之间施加磁力吸引力 磁芯和针头打开阀体。
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公开(公告)号：US20160025052A1
公开(公告)日：2016-01-28
申请号：US14774925
申请日：2014-01-27
Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
Inventor： Yoshihito YASUKAWA , Hideharu EHARA , Tohru ISHIKAWA , Kiyotaka OGURA , Motoyuki ABE , Ryo KUSAKABE , Akiyasu MIYAMOTO
CPC classification number: F02M51/0614 , F02M51/0625 , F02M51/0671 , F02M61/042 , F02M63/0012 , F02M2200/8084 , F02M2200/9069
Abstract: In an electromagnetic fuel injection which is structured such that both end surfaces of an inner circumferential iron core portion and an outer circumferential iron core portion face a movable iron core, and a non-magnetic portion made of a metal material is provided between both end surfaces, an object of the present invention is to realize a structure of the electromagnetic fuel injector in which a surface of a target object is unlikely to be affected by a heat treatment with the surface facing the movable iron core. In an electromagnetic fuel injector 1 of the present invention which is structured such that both end surfaces of an inner circumferential iron core portion 401a and an outer circumferential iron core portion 401b face a movable iron core 402, and a non-magnetic portion 401d made of a metal material is provided between both end surfaces, in order to achieve this object, heat in a target member to be heat treated is generated by applying energy to a target member's surface which is different from a target member's surface that faces the movable iron core 402. More preferably, energy is applied to a surface different from a surface on a side that faces the movable iron core 402.
Abstract translation: 在电磁燃料喷射中，内周铁心部分和外周铁芯部分的两个端面面对可动铁芯，以及由金属材料制成的非磁性部分设置在两个端面之间 本发明的目的是实现电磁燃料喷射器的结构，其中目标物体的表面不易受到与可动铁芯面对的表面的热处理的影响。 在本发明的电磁燃料喷射器1中，内周铁芯部401a和外周铁芯部401b的两端面与可动铁芯402相对，而非磁性部401d由 在两个端面之间设置有金属材料，为了达到上述目的，通过向目标构件的表面施加能量而产生热处理对象构件的热量，该目标构件的表面与目标构件的面对可动铁芯的表面不同 更优选地，能量施加到与面对可动铁芯402的一侧上的表面不同的表面。
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