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1. 发明授权

US11591994B2 Fuel injection device 有权
公开(公告)号：US11591994B2
公开(公告)日：2023-02-28
申请号：US16652758
申请日：2018-10-31
申请人： Hitachi Automotive Systems, Ltd.
发明人： Masashi Sugaya , Takao Miyake , Yasuo Namaizawa
IPC分类号： F02M61/20 , F02M61/04 , B05B1/30
摘要： For a fuel injection device, a configuration to improve fuel sealability when a valve is closed is provided. Therefore, the fuel injection device includes: a valve body that opens and closes a fuel flow path; a movable iron core in which a fuel passage hole communicating an upstream side and a downstream side is formed, and that operates the valve body toward the upstream side; a biasing spring whose one end contacts the movable iron core, and that biases the movable iron core in a valve opening direction; and a regulating unit that regulates movement of the one end of the biasing spring, in which the shortest distance between the one end of the biasing spring and the fuel passage hole is larger than a radial travel distance of the one end until radial movement of the one end is regulated by the regulating unit.

2. 发明申请

US20150047611A1 SPARK-IGNITION DIRECT FUEL INJECTION VALVE 有权
标题翻译：火花点火直喷燃油喷射阀
公开(公告)号：US20150047611A1
公开(公告)日：2015-02-19
申请号：US14379973
申请日：2012-12-07
申请人： Hitachi Automotive Systems, Ltd.
发明人： Yoshihito Yasukawa , Kiyotaka Ogura , Takao Miyake , Eiji Ishii , Motoyuki Abe , Tohru Ishikawa
IPC分类号： F02M67/12
CPC分类号： F02M61/1813 , F02M51/0671 , F02M51/0675 , F02M61/1833 , F02M67/12
摘要： 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.
摘要翻译：火花点火直接燃料喷射阀至少包括设置有燃料喷射孔和阀座的座椅构件和阀体，其通过与阀座接触和分离来控制从喷射孔喷射的燃料。在火花点火式直接燃料喷射阀中，喷射孔具有一个向座椅构件向内开口的喷射孔入口和一个向座椅构件向外敞开的喷射孔出口; 喷孔入口的开口边缘具有形成在相对于朝向喷射孔入口的燃料流的上游侧的第一圆形倒角部分; 并且喷射孔的延伸长度（L）不超过喷射孔的孔径（D）的三倍。

3. 发明授权

US10704518B2 Spark-ignition direct fuel injection valve 有权
公开(公告)号：US10704518B2
公开(公告)日：2020-07-07
申请号：US16012275
申请日：2018-06-19
申请人： Hitachi Automotive Systems, Ltd.
发明人： Yoshihito Yasukawa , Kiyotaka Ogura , Takao Miyake , Eiji Ishii , Motoyuki Abe , Tohru Ishikawa
IPC分类号： F02M69/04 , F02M61/18 , F02M51/06 , F02M67/12
摘要： 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.

4. 发明授权

US10280886B2 Fuel injection valve 有权
公开(公告)号：US10280886B2
公开(公告)日：2019-05-07
申请号：US15512370
申请日：2015-06-17
申请人： Hitachi Automotive Systems, Ltd.
发明人： Masashi Sugaya , Kiyotaka Ogura , Takao Miyake , Yoshihito Yasukawa , Ryo Kusakabe , Atsushi Nakai
IPC分类号： F02M51/06 , F02M61/16 , F02M61/18 , F02M61/20
摘要： An object of the present invention is to provide a fuel injection valve which has a structure where failure hardly occurs in a valve member and a peripheral member thereof at the time of press-fitting of a fixed core. The present invention provides a fuel injection valve that includes: a valve member 114A; an anchor 102 which is relatively displaceable with respect to the valve member 114A; a fixed core 107 in which a through-hole 107A is formed; a gap forming member 133 which forms a gap between an engagement portion 129B on the valve member side and an engagement portion 102D on the anchor side; and a biasing spring 134 which biases the gap forming member 133 in a valve closing direction. The engagement portions 102D and 129B are provided in both the anchor 102 and the valve member 114A so as to be engaged with each other when the anchor 102 is displaced in a valve opening direction with respect to the valve member 114A, thereby regulating the displacement of the anchor 102 in the valve opening direction. An outer diameter of the gap forming member 133, an outer diameter of the biasing spring 134, and a maximum outer diameter of the valve member 114A are set to be smaller than an inner diameter of the through-hole 107A.

5. 发明授权

US10995655B2 Fuel injection device 有权
公开(公告)号：US10995655B2
公开(公告)日：2021-05-04
申请号：US16347099
申请日：2017-11-21
申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.
发明人： Akira Iizuka , Tohru Ishikawa , Takao Miyake , Kazuki Yoshimura
IPC分类号： F02B23/06 , F02F1/24 , F02F1/42 , F02M61/18 , F02M51/06
摘要： A fuel injection device including a valve body having an injection hole-formed part having a plurality of injection holes on the leading end side of the valve body. An injection hole comprises a crossing angle, θ1, between a central axis of the injection hole-formed part and an injection hole axis, and another injection hole comprises a crossing angle, θ2, between the central axis and another injection hole axis. θ2 is larger than θ1. The injection holes are formed such that a distance between the central axis and an inlet surface center of the injection hole is longer than a distance between the central axis and another inlet surface center of the another injection hole. A straight line beyond an outlet surface in the injection hole axis does not intersect with another straight line beyond another outlet surface in the another injection hole axis.

6. 发明授权

US10815949B2 Fuel injection device 有权
公开(公告)号：US10815949B2
公开(公告)日：2020-10-27
申请号：US16301552
申请日：2017-04-13
申请人： Hitachi Automotive Systems, Ltd.
发明人： Yoshihito Yasukawa , Kiyotaka Ogura , Takao Miyake , Akira Iizuka , Kazuki Yoshimura , Akiyasu Miyamoto
IPC分类号： F02M61/18 , F02M61/10 , F02M51/06 , F16K1/44
摘要： Provided is a structure capable of reducing dribbling of fuel generated when a valve body is closed. In order to achieve the above object, a fuel injection device includes: a valve body; and a seat member having a seat portion on which the valve body is seated and having a fuel injection hole formed on a downstream side of the seat portion. The seat member is formed such that a gap between the seat member and the opposing valve body in the whole region on the downstream side of the fuel injection hole is smaller than a diameter of the fuel injection hole.

7. 发明授权

US09534573B2 Fuel injection valve 有权
标题翻译：燃油喷射阀
公开(公告)号：US09534573B2
公开(公告)日：2017-01-03
申请号：US14765455
申请日：2014-01-24
申请人： Hitachi Automotive Systems, Ltd.
发明人： Kiyotaka Ogura , Hideharu Ehara , Motoyuki Abe , Eiji Ishii , Masanori Mifuji , Atsushi Takaoku , Takao Miyake
IPC分类号： B05B1/30 , F02M61/16 , F02M51/06
CPC分类号： F02M61/162 , F02M51/0664 , F02M51/0671
摘要： An object of the invention is to provide a fuel injection valve that applies a swirl to an upstream side of a seat section to shorten spray penetration.When flows into injection hole entries are indicated by arrows 101a to 106a and injection hole exit directions are indicated by arrows 201 to 206, an angle α defined by the inflow direction 101a and the exit direction 201 of an injection hole 71 can be increased. In a method for applying the twisted angle α, a side groove 15a on an outer peripheral side of a guide member 12a is set to be accompanied with a twist with respect to an axis O1. Furthermore, a flow passage area of the side groove 15a is set smaller than a flow passage area on an upstream side of the guide member 12a and is also set larger than a flow passage area of a seat section 7B that is constructed by a gap between a valve body 7 and an orifice cup 7.
摘要翻译：当流入喷射孔入口时，箭头101a至106a表示出喷射孔出射方向，箭头201至206表示喷射孔71的流入方向101a和出射方向201所限定的角度α。在施加扭转角α的方法中，引导构件12a的外周侧上的侧槽15a被设定为相对于轴线O1而扭转。此外，侧槽15a的流路面积被设定为小于引导构件12a的上游侧的流路面积，并且也设定为大于由座部7B的流路面积构成的座部7B的流路面积，阀体7和孔口杯7。

8. 发明授权

US11242830B2 Fuel injection valve 有权
公开(公告)号：US11242830B2
公开(公告)日：2022-02-08
申请号：US16646785
申请日：2018-09-28
申请人： Hitachi Automotive Systems, Ltd.
发明人： Akiyasu Miyamoto , Yasuo Namaizawa , Takao Miyake , Takuya Watai
IPC分类号： F02M51/06
摘要： Provided is a fuel injection valve capable of quickly stopping a position of a movable element at a predetermined position after closing a valve while reducing an impact force of a valve body. Therefore, a valve body 101 includes a sleeve 113. A first movable core 201 (first movable element) lifts the valve body 101 by the attractive force of a magnetic core 107. A second movable core 202 (second movable element) further lifts the valve body 101 by the attractive force of the magnetic core 107 after the first movable core 201 (first movable element) lifts the valve body 101. After the valve body 101 is seated on the seat member 102 and the second movable core 202 (second movable element) is separated from the sleeve 113, a bottom surface 201g of the first movable core 201 (first movable element) collides with a storage bottom surface 111b (collision receiving portion).

9. 发明授权

US10890147B2 Flow control device 有权
公开(公告)号：US10890147B2
公开(公告)日：2021-01-12
申请号：US16072637
申请日：2017-01-19
申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.
发明人： Takao Miyake , Kiyotaka Ogura , Masashi Sugaya , Takumi Takahashi
IPC分类号： F02M51/06 , F02M61/16 , F02M63/00 , F02M61/18
摘要： Provided is a fuel injection device that can secure strength capable of withstanding high fuel pressure. In a fuel injection device in which a fuel boundary includes two or more components, two components are press-fitted with an inner diameter and an outer diameter and are brought into contact at a butting surface, abutting welding is performed from a direction nearly parallel to the butting surface, an inner diameter side corner portion of the butting surface of a component to be fitted and press-fitted on an inner diameter side is chamfered longer in a direction perpendicular to the butting surface to increase a welding coupling length than a butting length, welding coupling length is less than welding depth, weld penetration depth is not less than material thickness, and the center of the weld is on a base material side, the outer diameter of which is larger than a joining face.

10. 发明授权

US10883434B2 Control device for fuel injection device 有权
公开(公告)号：US10883434B2
公开(公告)日：2021-01-05
申请号：US16327268
申请日：2017-07-07
申请人： Hitachi Automotive Systems, Ltd.
发明人： Takao Miyake , Akiyasu Miyamoto , Takatoshi Iizuka , Kiyotaka Ogura
IPC分类号： F16K31/06 , F02D41/20 , F02M51/06 , F02M61/10 , F02M51/00
摘要： An object is to suppress an inclination of a waveform indicating an injection quantity with respect to an injection pulse particularly when a lift amount of a valve body is small and an injection pulse width is short, thereby improving control accuracy of the injection quantity of a fuel injection device. Thus, a control device for controlling a fuel injection device, which includes a valve body, a solenoid, and a movable element to open the valve body, is provided with a control unit that controls a drive voltage or a drive current to be applied to the solenoid, in which the control unit controls the drive current such that the drive current to be supplied to the solenoid decreases from a maximum drive current after the maximum drive current is supplied to the solenoid and before the valve body starts to open.

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