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1. 发明申请

US20200165998A1 Flow Volume Control Device, and Method for Manufacturing Flow Volume Control Device 审中-公开
公开(公告)号：US20200165998A1
公开(公告)日：2020-05-28
申请号：US16629489
申请日：2018-07-17
申请人： Hitachi Automotive Systems, Ltd.
发明人： Takao MIYAKE , Masaru KAWAI , Masashi SUGAYA , Yasuo NAMAIZAWA
IPC分类号： F02D41/38 , F02M51/06
摘要： Provided are a flow volume control device capable of securing a strength withstanding a high fuel pressure, and a method for manufacturing the flow volume control device. A fuel injection valve 1 includes a movable element 102 and a nozzle holder 101 that is positioned on the outer peripheral side of the movable element 102 and holds the movable element 102 inside in a radial direction. The nozzle holder 101 is molded using precipitation hardening stainless steel as a material. In addition, the manufacturing method includes forging and molding a material by forging using the precipitation hardening stainless steel as the nozzle holder 101, performing solution thermal treatment on the material after the forging and molding step, and performing precipitation hardening thermal treatment on the material after the solution thermal treatment, and finishing and molding the material after the precipitation hardening thermal treatment.

2. 发明申请

US20180252192A1 ELECTROMAGNETIC VALVE 审中-公开
公开(公告)号：US20180252192A1
公开(公告)日：2018-09-06
申请号：US15754499
申请日：2016-07-25
申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.
发明人： Masashi SUGAYA , Kiyotaka OGURA , Takao MIYAKE , Yoshihito YASUKAWA
IPC分类号： F02M51/06 , F02M61/10 , F16K31/06
摘要： Provided is an electromagnetic valve capable of stabilizing an injection amount even when injection is performed while an intermediate member continues to be displaced after valve closing and returns to a closed valve standby state.For that purpose, a valve body 303 opens or closes a flow path. A movable iron core 404 moves the valve body 303 in a valve opening direction using a magnetic attraction force. An intermediate member 414 forms a preliminary stroke gap (g1) between the movable iron core 404 and the valve body 303 in a closed valve state. A stopper portion 410c collides with the intermediate member 414 when the intermediate member 414 moves in a direction in which the preliminary stroke gap (g1) is reduced.

3. 发明申请

US20180017005A1 DRIVE DEVICE FOR FUEL INJECTION DEVICE 审中-公开
公开(公告)号：US20180017005A1
公开(公告)日：2018-01-18
申请号：US15546432
申请日：2016-02-01
申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.
发明人： Ryo KUSAKABE , Takatoshi IIZUKA , Takao MIYAKE , Masashi SUGAYA , Kiyotaka OGURA , Shirou YAMAOKA
IPC分类号： F02D41/20 , F02D41/26 , F02M61/10 , F02D41/30 , F02M51/06
CPC分类号： F02D41/20 , F02D41/26 , F02D41/3064 , F02D41/307 , F02D2041/2041 , F02D2041/2051 , F02D2041/2058 , F02M51/00 , F02M51/06 , F02M51/061 , F02M61/10
摘要： The purpose of the present invention is to provide a drive device that improves the precision of injection quantities by stabilizing the behavior of a valve body 214 under the condition that a valve body reaches a height position lower than a maximum height position and making the injection pulse width and the injection quantity gradient small. The present invention is a drive device for a fuel injection device for use in an internal combustion engine, wherein: the fuel injection device is provided with a valve body 214 that can open and close a fuel passage, a needle 202 that activates an opening and closing valve by transmitting power between itself and the valve body 214, and an electromagnet that comprises a solenoid 205 and a fixed core 207 provided as drive means for the needle 202, and a cylindrical nozzle holder 201 disposed on the outer peripheral side of the needle 202; and the drive device 150 controls a drive current flowing to the coil so as to decrease from the maximum drive current to a first drive current 610 that is lower than the maximum drive current before the valve body 214 reaches the maximum height position so that the valve body 214 reaches a height position lower than the maximum height position.

4. 发明申请

US20170292488A1 Fuel Injection Valve 审中-公开
公开(公告)号：US20170292488A1
公开(公告)日：2017-10-12
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： F02M61/18 , F02M51/06 , F02M61/20
CPC分类号： F02M61/18 , F02M51/061 , F02M51/0685 , F02M61/168 , F02M61/20 , F02M2200/8061
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. 发明申请

US20210239081A1 FUEL INJECTION VALVE 有权
公开(公告)号：US20210239081A1
公开(公告)日：2021-08-05
申请号：US15734482
申请日：2019-08-08
申请人： Hitachi Automotive Systems, Ltd.
发明人： Takuya WATAI , Takao MIYAKE , Masashi SUGAYA , Yasuo NAMAIZAWA
IPC分类号： F02M61/18 , F02M61/04 , F02M51/06 , F02M61/20
摘要： Provided is a fuel injection valve capable of improving durability as compared with the conventional case and making the amount of fuel injected uniform as compared with the conventional case. Further, the present invention provides a fuel injection valve capable of injecting fuel with a high fuel pressure as compared with the conventional case and improving the reliability of the product as compared with the conventional case. For this reason, the configuration has a shape relationship in which φB>φC>φD>φE>φF is satisfied where φB represents a hole diameter of a valve body insertion hole 31 consisting of the through hole formed in the central axis of a movable core 30, φC represents an outer diameter of an intermediate portion 22, of a valve body 20, that slides on a valve body insertion hole (through hole) 31, φD represents a diameter of an inner peripheral face 121 of a front end member 12 having an injection hole 11 that slides on a front end side (downstream side) spherical portion 230 of the valve body 20, φE represents an outermost diameter (sphere diameter) of a front end side (downstream side) spherical portion 230 of the valve body 20, and φF represents an outer diameter of a neck 223, the smallest diameter portion, which is located toward the rear end (upstream) relative to the front end side (downstream side) spherical portion 230 of the valve body 20 and located at the intermediate portion 22 of the valve body 20, and a side face of the movable core 30 and the inner peripheral face of the nozzle body 10 are not in contact with each other.

6. 发明申请

US20210207566A1 FUEL INJECTION DEVICE 有权
公开(公告)号：US20210207566A1
公开(公告)日：2021-07-08
申请号：US15779198
申请日：2017-01-23
申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.
发明人： Takatoshi IIZUKA , Kiyotaka OGURA , Takao MIYAKE , Masashi SUGAYA
IPC分类号： F02M51/06
摘要： Provided is a fuel injection device that sets an electromagnetic attraction force, which is generated in a magnetic gap between a magnetic core and a movable element, to more than or equal to a desired value. The fuel injection device includes a movable element that is attracted to the magnetic core and a housing provided opposite to the movable element in a direction orthogonal to an axial direction, wherein the movable element is configured so that an axial length of the movable element is 1.25 to 1.46 times as long as an axial length of the housing.

7. 发明申请

US20210102520A1 FUEL INJECTION VALVE AND METHOD FOR ASSEMBLING SAME 有权
公开(公告)号：US20210102520A1
公开(公告)日：2021-04-08
申请号：US16971081
申请日：2019-01-24
申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.
发明人： Akiyasu MIYAMOTO , Masashi SUGAYA , Yasuo NAMAIZAWA , Takuya WATAI
IPC分类号： F02M51/06 , F02M61/16
摘要： Provided is a fuel injection valve capable of stroking a valve body in two stages of large and small strokes and improving responsiveness of a valve opening operation. Therefore, a first mover 201 is attracted to a magnetic core 107. A second mover 202 is formed separately from the first mover 201, and is attracted to the magnetic core 107 on an inner diameter side of the first mover 201. A valve body 101 has a flange portion 101a on an upstream side of the second mover 202. A spacer 213 forms a gap (void g1) in an axial direction between the flange portion 101a and the second mover 202 in a valve closed state.

8. 发明申请

US20190040827A1 FLOW CONTROL DEVICE 审中-公开
公开(公告)号：US20190040827A1
公开(公告)日：2019-02-07
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 , F02M63/00
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.

9. 发明申请

US20200232433A1 FUEL INJECTION DEVICE 审中-公开
公开(公告)号：US20200232433A1
公开(公告)日：2020-07-23
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： F02M61/04 , F02M61/20 , 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.

10. 发明申请

US20180163685A1 SOLENOID VALVE 审中-公开
公开(公告)号：US20180163685A1
公开(公告)日：2018-06-14
申请号：US15579682
申请日：2016-06-17
申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.
发明人： Yoshihito YASUKAWA , Akiyasu MIYAMOTO , Takao MIYAKE , Takatoshi IIZUKA , Masashi SUGAYA , Kiyotaka OGURA , Motoyuki ABE
IPC分类号： F02M63/00 , F02M47/02 , F02M51/06
CPC分类号： F02M63/0075 , F02M47/027 , F02M51/06 , F02M51/0675 , F02M63/0017 , F16K27/029 , F16K31/06 , F16K31/0675 , F16K31/0689 , H01F3/00
摘要： A solenoid valve provided with a valve element that abuts against and separates from a valve seat to seal fuel; a movable iron core capable of being separated from the valve element; and a fixed iron core arranged opposed to the movable iron core. The solenoid valve also includes: a first spring member that energizes the valve element toward a side of the valve seat; a second spring member that energizes the movable iron core toward the fixed iron core; and a stopper part disposed on the side of the valve seat with respect to the movable iron core, and arranged with the movable iron core via a gap in a displacement direction in a valve closed state. The gap is set so the movable iron core collides with the stopper part when being displaced in the valve closing direction after the valve element is opened.

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