公开(公告)号：US20170298915A1

公开(公告)日：2017-10-19

申请号：US15476070

申请日：2017-03-31

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Kazuhiro ASAYAMA ,  Satoki TAKAGI

IPC分类号： F04B17/04

CPC分类号： F04B17/042 ,  H02K21/028

摘要： A plunger electric fuel pump includes a cylinder; a plunger; a pump body; a movable element to which the plunger is connected; a fixed core provided so as to face the movable element; a rotational core including a permanent magnet; an electric motor configured to rotate the rotational core; and a spring configured to urge the movable element in a direction away from the pump body. The rotational core and the fixed core are provided with a switching portion configured to switch between a first state and a second state when a rotational phase of the rotational core is changed, the first state being a state where the magnetic force of the permanent magnet is not applied to the movable element, the second state being a state where the magnetic force of the permanent magnet is applied to the movable element.

公开(公告)号：US20170096988A1

公开(公告)日：2017-04-06

申请号：US15275917

申请日：2016-09-26

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Kazuhiro ASAYAMA ,  Hirokazu YOKOYAMA ,  Satoki TAKAGI

IPC分类号： F04B17/03 ,  F04B15/00 ,  F02M59/10 ,  F04B53/14 ,  F04B53/16 ,  F02M59/02 ,  H02K33/12 ,  F04B19/22

CPC分类号： F04B17/03 ,  F02M59/025 ,  F02M59/10 ,  F04B15/00 ,  F04B17/042 ,  F04B19/22 ,  F04B53/14 ,  F04B53/16 ,  H02K33/06 ,  H02K33/12 ,  H02K33/16

摘要： A fuel pump includes a plunger that reciprocates in a cylinder. The fuel pump further includes a first mover connected to the plunger, a second mover serving as a counterweight for the first mover, an electromagnet provided between the first mover and the second mover, a first magnetic member provided between the first mover and the second mover, and a first spring urging the first mover and the second mover away from each other. Further, a second magnetic member is provided between both of the electromagnet and the first magnetic member and a first inclined surface of the first mover, while a third magnetic member is provided between both of the electromagnet and the first magnetic member and a second inclined surface of the second mover.