Abstract
This paper proposes a new type of high-speed electromagnetic linear actuator for engine valve drive. The proposed actuator uses permanent magnet (PM) in addition to the electromagnet. The PM produces bias flux to hold the armature on the surface of the stator pole. Hence this actuator can reduce the driving power drastically than the conventional solenoid type one. First, the concept of electromagnetic valve actuator is explained. Then the actuator is designed considering the installation on the real engine. Finally the experimental setup is fabricated and tested. The results showed better performance and high possibility for practical use.
