Honda Giken Kogyo Kabushiki Kaisha

Jirou Fujimoto

Yasuo Shimizu

Hidetaka Ozawa

Toshihiro Yamaki

Minoru Nakamura

Chihaya Sugimoto

An electromagnetic actuator is equipped with two springs which act in opposite directions, and an armature that is connected to the springs and is supported in an unactivated state in a neutral position provided by the two springs. The armature is coupled to a mechanical element such as a valve of an engine. The actuator includes a pair of electromagnets that drive the armature between a first terminal position and a second terminal position, and a power supply device that controls the voltage supplied to the electromagnet attracting the armature to a constant voltage when the armature is driven from one of the terminal positions to the other terminal position. The voltage supplied to the electromagnets is maintained at a constant value and the larger current flows in the larger is the gap between the armature and the yoke and smaller is the counter electromotive force.

Growing community of inventors

Wako, Japan

Jirou Fujimoto