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1. 发明申请

US20190234359A1 Control Method of High-Pressure Fuel Supply Pump and High-Pressure Fuel Supply Pump Using the Same 审中-公开
公开(公告)号：US20190234359A1
公开(公告)日：2019-08-01
申请号：US15775944
申请日：2016-11-07
申请人： Hitachi Automotive Systems, Ltd.
发明人： Masanori WATANABE , Shunsuke ARITOMI , Kenichiro TOKUO , Masayuki SUGANAMI
IPC分类号： F02M59/36 , F02D41/20 , F02M59/46 , F02M63/00 , F02D41/40
CPC分类号： F02M59/368 , F02D41/20 , F02D41/38 , F02D41/406 , F02D2041/2003 , F02D2041/2037 , F02D2041/2044 , F02D2041/2048 , F02M59/466 , F02M63/0022
摘要： It is an object of the present invention to provide a control method of a high-pressure fuel supply pump and a high-pressure fuel supply pump using the same capable of effectively reducing noise generated when an electromagnetic suction valve is opened. This can be realized such that, in a control method of a high-pressure fuel supply pump including a suction valve disposed on the suction side of the pressurizing chamber, a rod for urging the suction valve toward the opening valve direction, and an anchor for moving the rod in the closing valve direction with attraction by magnetic attraction caused by a solenoid being energized, when the anchor moves in the opening valve direction, a first drive current is passed through the solenoid for a predetermined period of time, and thereafter a second drive current larger than the first drive current is passed through the solenoid for a predetermined period of time.

2. 发明申请

US20200318593A1 High-Pressure Fuel Supply Pump 审中-公开
公开(公告)号：US20200318593A1
公开(公告)日：2020-10-08
申请号：US16305303
申请日：2017-06-05
申请人： Hitachi Automotive Systems, Ltd.
发明人： Masashi NEMOTO , Shigehiko OMATA , Moritsugu AKIYAMA , Shunsuke ARITOMI , Takanori OGINUMA
IPC分类号： F02M59/46
摘要： There is provided a discharge valve mechanism provided at an outlet of a pressurizing chamber of a high-pressure fuel supply pump that aims to reduce a backflow amount of fuel from a discharge valve and to prevent cavitation erosion. There are provided a discharge valve disposed on a discharge side of a pressurizing chamber, a discharge valve seat that closes a discharge side flow passage of the pressurizing chamber by seating the discharge valve, and a discharge valve spring that presses the discharge valve toward the discharge valve seat. It is configured such that, in a case where a minimum seat diameter of a seat portion in which the discharge valve is seated on the discharge valve seat is set to D and a spring force of the discharge valve spring at a time of setting is set to F, a coefficient K obtained by dividing the spring force F by the minimum seat diameter D is set to be 0.2 or more.

3. 发明申请

US20160290299A1 High-Pressure Fuel Supply Pump 有权
标题翻译：高压燃油泵
公开(公告)号：US20160290299A1
公开(公告)日：2016-10-06
申请号：US14777627
申请日：2014-02-03
申请人： HITACHI AUTOMOTIVE SYSTEMS , LTD.
发明人： Shunsuke ARITOMI , Hitoshi KONNO , Yukio TAKAHASHI , Masayuki SUGANAMI , Katsumi MIYAZAKI , Kenichirou TOKUO
IPC分类号： F02M59/46 , F16K31/06 , F02M37/00
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.
摘要翻译：本发明的目的是提供一种电磁阀结构，其在电磁阀的响应性方面得到改进，并且有助于实现更精确的流量控制，并且提供一种高压燃料供给泵，其中，安装。提供一种高压燃料供给泵，其具有电磁阀，该电磁阀具有产生用于打开和关闭设置在燃料进入路径和压力室之间的阀体的电磁力的电磁线圈，由电磁力操作的可动部件，容纳可动部件的壳体和形成在壳体和可动部件之间的背压室，其中使背压室与进气通路连通的第一燃料通路通过可动部件的中心轴线。

4. 发明申请

US20160281693A1 High-Pressure Fuel Supply Pump 有权
标题翻译：高压燃油泵
公开(公告)号：US20160281693A1
公开(公告)日：2016-09-29
申请号：US15032941
申请日：2014-10-01
申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.
发明人： Shunsuke ARITOMI , Satoshi USUI , Atsuji SAITO , Tatsuo KAWANO , Masayuki SUGANAMI , Kenichirou TOKUO
IPC分类号： F04B11/00 , F02M59/46 , F04B53/16 , F04B53/10 , F04B53/14 , F02M59/02 , F04B19/22
CPC分类号： F04B11/0091 , F02M59/025 , F02M59/368 , F02M59/462 , F02M59/466 , F02M63/0077 , F02M63/0078 , F02M2200/04 , F02M2200/28 , F04B19/22 , F04B53/1087 , F04B53/14 , F04B53/16
摘要： An object of the present invention is to reduce erosion due to cavitation in proximity to a valve seat in a high-pressure fuel supply pump including a fuel flow passage having a bent portion in proximity to the valve seat, formed therein. The high-pressure fuel supply pump includes fuel passages interconnecting with a pressurizing chamber of fuel in which volume varies due to reciprocating motion of a plunger to be in the reciprocation motion, and fluid valves formed on the fuel passage. The fuel valves are included in a valve seat and a valve member. The fuel passages include a gap passage portion formed in a gap between the valve seat and the valve member, and a bent passage portion extending in a bent direction on the downstream side of the gap passage portion. In a case where a backflow direction of the fuel is defined as a reference, in terms of a passage surface on the side of an inner circumference of a bent passage portion including the gap passage portion and the bent passage portion, a recess portion is formed on an end portion on the upstream side of a passage surface included in the side of the bent passage portion.
摘要翻译：本发明的目的是减少在包括形成在阀座附近的具有弯曲部分的燃料流动通道的高压燃料供给泵附近的阀座附近的气蚀的侵蚀。高压燃料供给泵包括与由活塞往复运动的往复运动而体积变化的燃料加压室相互连接的燃料通路，以及形成在燃料通路上的流体阀。燃料阀包括在阀座和阀构件中。燃料通路包括形成在阀座和阀构件之间的间隙中的间隙通道部分和在间隙通道部分的下游侧沿弯曲方向延伸的弯曲通道部分。在将燃料的回流方向定义为基准的情况下，就具有间隙通路部和弯曲通路部的弯曲通路部的内周侧的通路面而言，形成有凹部在包括在弯曲通道部分侧面的通道表面的上游侧的端部上。

5. 发明申请

US20210156350A1 FUEL SUPPLY PUMP AND METHOD FOR MANUFACTURING FUEL SUPPLY PUMP 有权
公开(公告)号：US20210156350A1
公开(公告)日：2021-05-27
申请号：US17046853
申请日：2019-02-13
申请人： Hitachi Automotive Systems, Ltd.
发明人： Shunsuke ARITOMI , Masayuki SUGANAMI
IPC分类号： F02M63/02 , F02M63/00
摘要： An object of the invention is to provide a fuel supply pump that can simultaneously prevent cavitation erosion in a relief valve seat portion at the time of increasing the pressure and reduce a maximum pressure when releasing an abnormally high pressure. Therefore, in the fuel supply pump, a relief valve mechanism includes a seat portion and a relief valve seated on the seat portion, and sets a set discharge pressure to 30 MPa or more. A seat angle of the seat portion is formed to be 40° to 50°, and a set valve opening pressure of the relief valve mechanism is set to 2 MPa or more than the set discharge pressure.

6. 发明申请

US20200318592A1 DEVICE FOR CONTROLLING HIGH-PRESSURE FUEL SUPPLY PUMP, AND HIGH-PRESSURE FUEL SUPPLY PUMP 审中-公开
公开(公告)号：US20200318592A1
公开(公告)日：2020-10-08
申请号：US16305366
申请日：2017-03-15
申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.
发明人： Masanori WATANABE , Shunsuke ARITOMI , Masayuki SUGANAMI , Ryo KUSAKABE
IPC分类号： F02M59/36 , F02D41/38
摘要： To reduce collision noise caused when an electromagnetic valve of a high-pressure fuel supply pump is opened. Therefore, in a control device for controlling a high-pressure fuel supply pump including: an anchor; a fixed core configured to attract the anchor with an electromagnetic force; a suction valve configured to be opened or closed when the anchor is sucked by the fixed core; and an electromagnetic force generation unit configured to generate the electromagnetic force when applied with a driving voltage, it can be achieved by providing a control unit configured to perform control to lower a driving current from a peak current before a timing at which the anchor is sucked by the fixed core and collides in an operation state where an engine is under no load and an engine rotation speed is equal to or less than a set rotation speed.

7. 发明申请

US20190136841A1 Pump for Supplying High-Pressure Fuel 审中-公开
公开(公告)号：US20190136841A1
公开(公告)日：2019-05-09
申请号：US16238807
申请日：2019-01-03
申请人： Hitachi Automotive Systems, Ltd.
发明人： Shunsuke ARITOMI , Kenichirou TOKUO , Satoshi USUI , Shingo TAMURA
IPC分类号： F04B19/22 , F04B1/04 , F02M59/10 , F02M59/44
摘要： A pump for supplying high-pressure includes a plunger, a cylinder, a body, and a holder. The uppermost end surface of the cylinder is an end of the cylinder that is closest to the pressurizing chamber. A first gap formed between the outer periphery of the cylinder and the body in the radial direction is smaller than a second gap formed in the radial direction between the inner diameter of the pressurizing chamber and the outer diameter of the plunger. A radial gap is formed in an entire area of the cylinder in an axial direction thereof.

8. 发明申请

US20180238287A1 High-Pressure Fuel Pump and Control Device 审中-公开
公开(公告)号：US20180238287A1
公开(公告)日：2018-08-23
申请号：US15580480
申请日：2016-08-01
申请人： Hitachi Automotive Systems, Ltd.
发明人： Kenichiro TOKUO , Ryo KUSAKABE , Shunsuke ARITOMI , Satoshi USUI , Masayuki SUGANAMI , Minoru HASHIDA , Masamichi YAGAI , Yuta SASO , Atsuji SAITO
IPC分类号： F02M63/00 , F02M59/46 , F02M59/36
CPC分类号： F02M63/0017 , F02D41/20 , F02D41/38 , F02D41/3845 , F02D2041/2037 , F02M59/368 , F02M59/462 , F02M59/466 , F02M63/0022 , F02M2200/09
摘要： Provided is a high-pressure fuel pump in which responsiveness of closing a suction valve can be maintained even when the high-pressure fuel pump is increased in pressure or capacity of the high-pressure fuel pump is increased, thereby ensuring discharge efficiency. Therefore, the high-pressure fuel pump includes the rod that urges the suction valve in the valve opening direction, the mover that drives the rod in the valve closing direction, and the solenoid that generates a magnetic attraction force for moving the mover in the valve closing direction. After the suction valve starts moving from the suction valve closing position in the valve opening direction, the rod reaches the suction valve closing position and further moves in the valve opening direction.

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