Keihin Corporation

Manabu Shouji

Hidetaka Ozawa

Kazuhito Kakimoto

Yasuharu Hourai

Tsukasa Naganuma

Tadao Tsuchiya

Kenichi Omori

To provide a fuel injection device for controlling a fuel injection valve including a solenoid and a magnetostrictive element to generate a drive force for driving the fuel injection valve, the fuel injection device including: a solenoid power source () for driving the solenoid, a solenoid drive circuit () adapted to control the electrification to the solenoid by the solenoid power source (), a plurality of magnetostrictive element driving power sources () for driving the magnetostrictive element, and a magnetostrictive element drive circuit () adapted to control the electrification to a magnetostrictive coil of the magnetostrictive element by the magnetostrictive element driving power sources. Since the plurality of the magnetostrictive element driving power sources can be respectively used when performing a valve-opening operation and when performing a valve-closing operation of the fuel injection valve of the fuel injection device, the opening/closing operation of the fuel injection valve of the fuel injection device can be properly performed.

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Miyagi, Japan

Manabu Shouji