1. 北京航空航天大学交通科学与工程学院，中国北京市，100191 2. School of Mechanical and Manufacturing Engineering, National University of Science and Technology, Islamabad 46000, Pakistan 3. School of Natural Sciences, University of Engineering and Technology, Lahore 54000, Pakistan
Design of a hybrid magnetomotive force electromechanical valve actuator
1. School of Transportation Science and Engineering, Beihang University, Beijing 100191, China 2. School of Mechanical and Manufacturing Engineering, National University of Science and Technology, Islamabad 46000, Pakistan 3. School of Natural Sciences, University of Engineering and Technology, Lahore 54000, Pakistan
We propose a novel axis-symmetric modified hybrid permanent magnet (PM)/electromagnet (EM) magnetomotive force actuator for a variable valve timing camless engine. The design provides a large magnetic force with low energy consump-tion, low coil inductance, PM demagnetization isolation, and improved transient response. Simulation and experimental results confirm forces of about 200 N (in the presence of coil current) at the equilibrium position and 500 N (in the absence of coil current) at the armature seat. We compared our proposed design with a double solenoid valve actuator (DSVA). The finite element method (FEM) designs of the DSVA and our proposed valve actuator were validated by experiments performed on manufactured prototypes.
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