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公开(公告)号：US20180238287A1
公开(公告)日：2018-08-23
申请号：US15580480
申请日：2016-08-01
发明人： Kenichiro TOKUO , Ryo KUSAKABE , Shunsuke ARITOMI , Satoshi USUI , Masayuki SUGANAMI , Minoru HASHIDA , Masamichi YAGAI , Yuta SASO , Atsuji SAITO
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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公开(公告)号：US20170248110A1
公开(公告)日：2017-08-31
申请号：US15506040
申请日：2015-06-29
发明人： Minoru HASHIDA , Hiroyuki YAMADA , Satoshi USUI , Kenichirou TOKUO , Masayuki SUGANAMI , Atsushi HOHKITA , Masamichi YAGAI
CPC分类号： F02M59/366 , F02M59/025 , F02M59/368 , F02M59/466 , F02M63/0022 , F02M2200/50 , F04B19/22 , F04B53/10 , F04B53/14 , F04B53/16
摘要： A high pressure fuel supply pump includes: an electromagnetic suction valve that adjusts an amount of fuel sucked into a pressuring chamber; a discharge valve that discharges the fuel from the pressuring chamber; and a plunger that makes a reciprocating motion in the pressuring chamber. The electromagnetic suction valve includes an electromagnetic coil, a suction valve, and a movable portion that is able to close the suction valve by a magnetic force when the electromagnetic coil is energized. The movable portion includes an anchor that is driven to close the suction valve by the magnetic force and stops at a fixed member, and a rod that is driven with the anchor and is able to move even after the anchor stops. The electromagnetic suction valve includes a first and second springs that bias the suction valve in closed and open direction, respectively, and a third spring in the rod.
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