公开(公告)号：US10584700B1

公开(公告)日：2020-03-10

申请号：US14901127

申请日：2014-06-05

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Takeyuki Yabuuchi ,  Hirokazu Yokoyama

IPC: F04B53/16 ,  F04B1/04 ,  F02M59/44 ,  F02M59/02 ,  F04B19/22 ,  F04B53/10 ,  F04B53/14

Abstract: A high-pressure fuel pump (10) includes a plunger (11), a pump housing (12), an intake valve (13), a discharge passage (14), a fuel seal member (18), and a fuel inlet conduit (34). The pump housing (12) includes a fuel pressurizing chamber (23), an intake passage (24a), a discharge passage (24b), a cylinder housing member (21), a cover member (31) that covers the cylinder housing member (21), and an intake gallery chamber (12g). The fuel inlet conduit (34) is connected to the cover member (31) and configured to introduce fuel into the intake gallery chamber (12g) from outside the cover member (31). The pump housing (12) includes a return passage (33e) that communicates the intake gallery chamber (12g) with a space surrounded by the plunger (11), the cylinder housing member (21), and the fuel seal member (18). A first end portion of the return passage (33e) on the intake gallery chamber (12g) side is positioned on an opposite side of the cylinder housing member (21) from the fuel inlet conduit (34).

公开(公告)号：US10066613B2

公开(公告)日：2018-09-04

申请号：US15275917

申请日：2016-09-26

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kazuhiro Asayama ,  Hirokazu Yokoyama ,  Satoki Takagi

IPC: F04B17/04 ,  F04B17/03 ,  F02M59/02 ,  F02M59/10 ,  F04B15/00 ,  F04B19/22 ,  F04B53/14 ,  F04B53/16 ,  H02K33/12 ,  H02K33/06 ,  H02K33/16

Abstract: 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.