Hitachi Automotive Systems, Ltd.

Hitachi, Ltd.

Yusuke Irino

Motoyuki Abe

Tohru Ishikawa

Yasuo Namaizawa

Takehiko Kowatari

Masahiko Hayatani

Noriyuki Maekawa

Atsushi Sekine

Atsushi Takaoku

In a fuel injection valve, it is intended to enhance valve-closing responsivity while maintaining durability (anti wear property) of a collision portion between a stationary core and a movable core and valve-opening responsivity. An annular end faceA of the movable corein the fuel injection valve is provided with a collision portionC that collides to a stationary corewhen the movable core is magnetically attracted toward the stationary core side and a non-collision portion that keeps a fluid gap between both cores at an area of an outer side or an inner side from the collision portion. The annular end faces of the stationary core and the movable core are coated with platingshaving anti wear property, and at least one of the platings of the stationary core and the movable core is formed in such a manner that the thickness thereof at the collision portionC is to be thicker and the thickness thereof at the non-collision portion is to be thinner.

Fuel injection valve for internal combustion engine

Each of the injection holes has an inclined angle with respect to a center line of an injection valve main body as well as the inclined angle of each of the injection holes is provided with a predetermined offset amount with respect to a target inclination angle of a center of gravity position of each of the injected fuel sprays. The predetermined offset amount is set based on a correction amount for correcting positional drift with respect to the target direction of the center of gravity position of the fuel spray.

Multihole injector

A fuel injection nozzle for directly injecting fuel into a cylinder of an internal combustion engine is inserted in a connecting pipe extending from a fuel rail and is fixed to the connecting pipe by fastening member. The fuel injection nozzle has a sealing part for sealing a fuel passage to prevent fuel leakage, and a contact part in contact with the fastening member. The contact part is softer than the fastening member, and the contact part undergoes plastic deformation when a bending moment that bends the axis of the fuel injection nozzle acts on the fuel injection nozzle.

Fuel injection nozzle and method of holding the same

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Hitachinaka, Japan

Yusuke Irino