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公开(公告)号：US10753357B2
公开(公告)日：2020-08-25
申请号：US15705660
申请日：2017-09-15
发明人： Satoshi Usui , Kenichiro Tokuo , Tatsuo Kawano , Masahiko Hayatani , Shingo Tamura , Hiroyuki Yamada , Katsumi Miyazaki
摘要： A fuel pump includes an intake valve unit which is provided between a low-pressure chamber and a pressurizing chamber. The intake valve unit includes an intake valve configured to move in an axial direction of the intake valve unit and a valve stopper arranged between the intake valve and the pressurizing chamber. A plurality of fuel passages configured to allow fuel to communicate between the low-pressure chamber and the pressurizing chamber are formed on a radially outward of an outer peripheral surface of the valve stopper.
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公开(公告)号：US10655585B2
公开(公告)日：2020-05-19
申请号：US16102214
申请日：2018-08-13
发明人： Satoshi Usui , Kenichiro Tokuo , Tatsuo Kawano , Masahiko Hayatani , Shingo Tamura , Hiroyuki Yamada , Katsumi Miyazaki
摘要： A high-pressure fuel supply pump includes a pressurizing chamber, a piston plunger, and an electromagnetically-driven intake valve mechanism. The piston plunger reciprocates within the pressurizing chamber. The electromagnetically-driven intake valve mechanism is provided at an inlet of the pressurizing chamber. The electromagnetically-driven intake valve mechanism includes an anchor which pulls a plunger rod, a fixed core which attracts the anchor, and a yoke in which inner peripheral part has the fixed core and the anchor. The fixed core is fixed to a bottom part of the yoke. A through hole is formed at a bottom part of the fixed core.
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公开(公告)号：US09890753B2
公开(公告)日：2018-02-13
申请号：US14777627
申请日：2014-02-03
发明人： Shunsuke Aritomi , Hitoshi Konno , Yukio Takahashi , Masayuki Suganami , Katsumi Miyazaki , Kenichirou Tokuo
CPC分类号： F02M59/466 , F02M37/0023 , F02M59/36 , F02M59/367 , F02M59/46 , F02M59/464 , F16K31/06 , F16K31/0644 , F16K31/0655 , F16K31/0693
摘要： It is an object of the present invention to provide an electromagnetic valve structure improved in terms of the responsiveness of the electromagnetic valve and helping to realize a more accurate flow rate control, and to provide a high-pressure fuel supply pump in which the same is mounted. There is provided a high-pressure fuel supply pump having an electromagnetic valve equipped with an electromagnetic coil generating an electromagnetic force for opening and closing a valve body provided between a fuel intake path and a pressure chamber, a movable member operated by the electromagnetic force, a housing accommodating the movable member, and a back-pressure chamber formed between the housing and the movable member, wherein a first fuel path causing the back-pressure chamber to communicate with the intake path passes the center axis of the movable member.
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公开(公告)号：US11047380B2
公开(公告)日：2021-06-29
申请号：US16126774
申请日：2018-09-10
发明人： Satoshi Usui , Shingo Tamura , Katsumi Miyazaki , Sunao Takahashi , Masayuki Suganami , Minoru Hashida
摘要： A high pressure fuel pump includes a pump housing, pressure and damper chambers, a metal diaphragm, a press-fitted portion, and a weld portion. The pressure chamber is provided in the pump housing. The damper chamber is formed by the pump housing and a damper cover. The metal diaphragm damper is arranged in the damper chamber. At the press-fitted portion, an annular surface of the damper cover is press fitted to an annular surface of the pump housing. The weld portion fixes the damper cover to the pump housing at an entire circumference of the press-fitted portion.
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公开(公告)号：US09797357B2
公开(公告)日：2017-10-24
申请号：US14625798
申请日：2015-02-19
发明人： Satoshi Usui , Kenichiro Tokuo , Tatsuo Kawano , Masahiko Hayatani , Shingo Tamura , Hiroyuki Yamada , Katsumi Miyazaki
CPC分类号： F02M59/366 , F02M37/0023 , F02M37/043 , F02M59/367 , F02M63/0017 , F02M63/0035 , F04B7/0076 , F04B53/10 , F04B53/1087 , Y10T137/86027
摘要： Responsiveness is improved in valve opening and valve closing of an electromagnetically driven intake valve unit in which a valve is provided on a pressurizing chamber side of a valve seat. The valve includes an annular abutting surface that abuts the valve seat to shut off a fuel intake passage and a bottomed cylindrical part provided at an inner peripheral part of the annular abutting surface. The bottomed cylindrical part is inserted into a fuel introduction hole formed in the valve housing inside the valve seat, and the outer surface of an end part of the bottomed cylindrical part is exposed to fuel in a low pressure fuel chamber provided upstream of the fuel introduction hole.
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公开(公告)号：US09709055B2
公开(公告)日：2017-07-18
申请号：US14497755
申请日：2014-09-26
发明人： Satoshi Usui , Shingo Tamura , Katsumi Miyazaki , Sunao Takahashi , Masayuki Suganami , Minoru Hashida
IPC分类号： F04B53/16 , F04B53/14 , F04B35/01 , F04B9/04 , F04B11/00 , F02M55/04 , F02M59/44 , F02M59/48 , F02M37/00
CPC分类号： F04B53/143 , F02M37/0041 , F02M55/04 , F02M59/442 , F02M59/48 , F04B9/042 , F04B11/0008 , F04B35/01
摘要： A mechanism for reducing pressure pulsation includes a pair of metal dampers formed by joining two disk-shaped metal diaphragms over an entire circumference and forming a hermetically sealed space inside a joined portion. Gas is sealed in the aforementioned hermetically sealed space of the damper, and a pair of pressing members give pressing forces to both outer surfaces of the aforementioned metal dampers at a position at an inner diameter side from the joined portion. The mechanism is unitized, with the pair of pressing members being connected in a state in which they sandwich the metal damper.
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公开(公告)号：US10316808B2
公开(公告)日：2019-06-11
申请号：US15893012
申请日：2018-02-09
IPC分类号： F02M59/46 , F16K31/06 , F04B53/10 , F02M59/36 , F04B49/24 , F04B7/00 , F02M63/00 , F02M59/48 , F02M59/02 , F02M37/00
摘要： To reduce collision noise created by the operation of an electromagnetic suction valve provided on a high pressure fuel supply pump, the mass of a member which collides by magnetic attractive force is reduced. The noise generated when a core and an anchor collide with each other by magnetic attractive force depends on the magnitude of the kinetic energy of a moving element. The kinetic energy to be consumed in the collision is only the kinetic energy of the anchor. The kinetic energy of a rod, being absorbed by a spring, does not contribute to the noise; thus, the energy when the anchor and the core collide with each other can be reduced, whereby the noise to be created can be reduced.
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公开(公告)号：US10107285B2
公开(公告)日：2018-10-23
申请号：US15617766
申请日：2017-06-08
发明人： Satoshi Usui , Shingo Tamura , Katsumi Miyazaki , Sunao Takahashi , Masayuki Suganami , Minoru Hashida
IPC分类号： F04B53/16 , F04B53/14 , F02M55/04 , F02M59/48 , F02M59/44 , F04B35/01 , F04B9/04 , F04B11/00 , F02M37/00
摘要： A mechanism for reducing pressure pulsation includes a pair of metal dampers formed by joining two disk-shaped metal diaphragms over an entire circumference and forming a hermetically sealed space inside a joined portion. Gas is sealed in the aforementioned hermetically sealed space of the damper, and a pair of pressing members give pressing forces to both outer surfaces of the aforementioned metal dampers at a position at an inner diameter side from the joined portion. The mechanism is unitized, with the pair of pressing members being connected in a state in which they sandwich the metal damper.
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公开(公告)号：US09920727B2
公开(公告)日：2018-03-20
申请号：US15019699
申请日：2016-02-09
IPC分类号： F02M59/46 , F16K31/06 , F02M59/02 , F02M63/00 , F02M59/36 , F04B53/10 , F04B49/24 , F02M59/48 , F04B7/00 , F02M37/00
CPC分类号： F02M59/466 , F02M37/0023 , F02M59/025 , F02M59/366 , F02M59/368 , F02M59/462 , F02M59/485 , F02M63/0017 , F02M63/0021 , F02M63/0075 , F02M2200/09 , F02M2200/502 , F04B7/0003 , F04B49/243 , F04B53/10 , F04B53/1082 , F16K31/0696
摘要： To reduce collision noise created by the operation of an electromagnetic suction valve provided on a high pressure fuel supply pump. In the present invention, in order to achieve the above object, the mass of a member which collides by magnetic attractive force is reduced to reduce the noise to be generated. The thus configured present invention provides the following advantageous effects. The noise generated when a core and an anchor collide with each other by magnetic attractive force depends on the magnitude of the kinetic energy of a moving element. The kinetic energy to be consumed in the collision is only the kinetic energy of the anchor. The kinetic energy of a rod, being absorbed by a spring, does not contribute to the noise; thus, the energy when the anchor and the core collide with each other can be reduced, whereby the noise to be created can be reduced.
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10.发明申请HIGH-PRESSURE FUEL SUPPLY PUMP HAVING AN ELECTROMAGNETICALLY-DRIVEN INLET VALVE 审中-公开具有电磁式入口阀的高压燃油泵公开(公告)号：US20150017039A1
公开(公告)日：2015-01-15
申请号：US14374840
申请日：2013-01-15
发明人： Satoshi Usui , Tatsuo Kawano , Hiroyuki Yamada , Katsumi Miyazaki , Kenta Iwakura , Minoru Hashida
CPC分类号： F02M51/04 , F02M59/44 , F02M59/466 , F04B1/0439 , F04B1/0456 , F04B7/0076 , F04B53/1082
摘要： A high-pressure fuel supply pump having a normally-closed type electromagnetically-driven inlet valve mechanism supporting a large capacity and causing least sound is provided. A valve member having a seat surface that comes into abutment with an inlet valve seat; and a plunger rod positioned on the seat surface side of the valve member and configured to operate the valve member by a magnetic attraction force are provided, and a protector configured to face a surface of the valve member on the surface opposite to the seat surface with a gap therebetween when the plunger rod makes a full stroke in the valve-open direction of the valve member and an anchor for driving the plunger rod comes into contact with a stopper is provided.
摘要翻译： 提供了一种具有常闭型电磁驱动入口阀机构的高压燃料供给泵，其支撑大容量并且产生最小的声音。 具有与入口阀座抵接的座面的阀构件; 并且设置有位于所述阀构件的所述座表面侧并且被构造成通过磁吸引力来操作所述阀构件的柱塞杆，以及保护器，其构造成在所述阀构件的与所述座表面相对的表面上面对， 当柱塞杆在阀构件的阀打开方向上的全行程和用于驱动柱塞杆的锚固件与止动件接触时，其间的间隙被设置。
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