Abstract
In this paper, we describe experimental results of newly electromagnetic intake and exhaust valve system. Newly developed electromagnetic valve is a type of solenoid valve. It is equipped with a amateur on top of a valve stem, and around them, coil windings are laid out. Experimental result shows wide range phase control of valve by adjustment valve opening time. Also, valve lift displacement could be control laid by varying duty ratio. Moreover, it has reduced electrical power consumptions by PWM control.
