Abstract
This paper proposes two types of high-speed electromagnetic linear actuator for engine valve drive. One is previous model, and the other is HD model. 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. Firstly, the concept of two types of electromagnetic valve actuator is explained. Secondly, the previous model is designed considering the installation on the real engine. The experimental setup of previous model is fabricated and tested. Thirdly, the HD model is proposed to improve the driving speed. The experimental setup of HD model is fabricated and tested, but the performance is not enough. Finally, the previous model is redesigned to improve it's driving speed. The analytical results show better performance and possibility for driving speed improvement.
