公开(公告)号：US20220298996A1

公开(公告)日：2022-09-22

申请号：US17545328

申请日：2021-12-08

Applicant: HITACHI ASTEMO, LTD.

Inventor： Yuya SUZUKI ,  Norihide OUCHI ,  Nozomu SASAKI ,  Junpei KOGAWA ,  Sho KANDA

IPC: F02M51/06

Abstract: In an electromagnetic fuel injection valve, a plurality of recess parts are provided in an attracted face of a movable core, the recess parts dividing a taper face of the movable core into a plurality of sections along a peripheral direction of the movable core. Accordingly, a fuel oil film present in an engaged part between an annular projection of a fixed core and the taper face is sectioned at a plurality of locations, thereby suppressing a sticking phenomenon of the engaged part caused by the fuel oil film. Therefore, when energization of a coil is cut off, a delay in detachment of the movable core from the fixed core is eliminated, thus contributing to improvement of valve-closing responsiveness.