Denso Corporation

Keita Kurigami

Hiroshi Inoue

Shinichiro Koshimoto

Yoshihito Suzuki

Tatsumi Oguri

Takayuki Makihara

Keigo Ohata

Taiki Kukita

A high-pressure pump includes a pressurizing chamber forming portion, a suction passage forming portion, a seat member, a valve member, a cylindrical member, a needle, a movable core, a biasing member, a fixed core, and a coil including a winding portion. The coil generates an attractive force between the fixed core and the movable core when the winding portion is energized. The coil includes an outer cylindrical surface and multiple inner cylindrical surfaces that have different diameters. The multiple inner cylindrical surfaces are arranged in order of increasing diameter in a direction toward a pressurizing chamber. The movable core has an end surface that faces the fixed core, and the end surface of the movable core is located between a center, in an axial direction, of a smallest diameter one of the plurality of inner cylindrical surfaces and a center, in an axial direction, of the outer cylindrical surface.

High-pressure pump

Growing community of inventors

Kariya, Japan

Keita Kurigami