US 12,140,113 B2
Electromagnetic valve mechanism and fuel pump
Takafumi Ito, Hitachinaka (JP); Kiyotaka Ogura, Hitachinaka (JP); Masashi Nemoto, Hitachinaka (JP); and Kenichiro Tokuo, Hitachinaka (JP)
Assigned to Hitachi Astemo, Ltd., Hitachinaka (JP)
Appl. No. 18/280,490
Filed by Hitachi Astemo, Ltd., Hitachinaka (JP)
PCT Filed Feb. 2, 2022, PCT No. PCT/JP2022/004021
§ 371(c)(1), (2) Date Sep. 6, 2023,
PCT Pub. No. WO2022/249550, PCT Pub. Date Dec. 1, 2022.
Claims priority of application No. 2021-089117 (JP), filed on May 27, 2021.
Prior Publication US 2024/0159208 A1, May 16, 2024
Int. Cl. F02M 59/36 (2006.01); F02M 59/44 (2006.01)
CPC F02M 59/366 (2013.01) [F02M 59/44 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An electromagnetic valve mechanism comprising:
a valve body;
a rod that engages with the valve body; and
a magnetic attraction force generation unit that generates a magnetic attraction force for moving the rod in an axial direction, wherein
the rod and a rod contact component in contact with the rod is provided with a low friction portion and a non-low friction portion, and
the low friction portion is set to a friction coefficient such that a frictional force generated between the rod and the rod contact component is smaller than a rotational propulsive force of the rod, and
the non-low friction portion includes an end portion of the rod on a side in contact with the valve body.