Device for continuous adjustment of valve timing

An apparatus for continuously variable adjustment of the valve timing may change an opening time of a valve. The apparatus for continuously variable adjustment of the valve timing may have a camshaft, in which a cam slot is formed, a cam portion of which a cam and a cam slot formed thereon and of which a center of rotation is identical with a center of rotation of the camshaft, and a cam portion of where a phase angle of the camshaft is variable and a time control section that changes the phase angle between the camshaft slot and the cam slot.