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AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorsHidetaka Ozawa, Yasuo Shimizu, Chihaya Sugimoto, Minoru Nakamura, Jirou Fujimoto, Toshihiro Yamaki
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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.
An electromagnetic actuator comprising:
An electromagnetic actuator for driving a valve of an engine comprising:
A method of driving a valve of an engine with an electromagnetic valve actuator having a first electromagnet for closing the valve, and a second electromagnet for opening the valve, comprising the steps of:
Dependencies are inferred from the claim text.