公开(公告)号：US09890753B2

公开(公告)日：2018-02-13

申请号：US14777627

申请日：2014-02-03

Applicant: Hitachi Automotive Systems, Ltd.

Inventor： Shunsuke Aritomi ,  Hitoshi Konno ,  Yukio Takahashi ,  Masayuki Suganami ,  Katsumi Miyazaki ,  Kenichirou Tokuo

IPC: F02M59/46 ,  F02M59/36 ,  F16K31/06 ,  F02M37/00

CPC classification number: F02M59/466 ,  F02M37/0023 ,  F02M59/36 ,  F02M59/367 ,  F02M59/46 ,  F02M59/464 ,  F16K31/06 ,  F16K31/0644 ,  F16K31/0655 ,  F16K31/0693

Abstract: 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.