Multiple variable valve lift apparatus

A multiple variable valve lift apparatus comprising:

• a first moving cam formed in a hollow cylindrical shape in which a camshaft inserted into the hollow cylindrical shape, provided to rotate together with the camshaft and move in an axial direction of the camshaft, and configured to form a first cam guide protrusion and a plurality of cams realizing different valve lifts from each other;
• a second moving cam formed in a second hollow cylindrical shape in which a second camshaft inserted into the second hollow cylindrical shape, provided to rotate together with the second camshaft and move in an axial direction of the second camshaft, and configured to form a second cam guide protrusion and a plurality of cams realizing different valve lifts from each other;
• a first operating device configured with a plurality of pins for guiding the first cam guide protrusion disposed thereon and operated to move the first moving cam in a first direction;
• a second operating device configured with a plurality of pins for guiding the second cam guide protrusion disposed thereon and operated to move the second moving cam in a second direction;
• a controller configured to control operations of the first operating device and the second operating device;
• and
• a valve opening/closing device contacting with any one cam of the plurality of cams so as to open/close a valve,
• wherein at least one of gaps between the plurality of pins respectively disposed at the first operating device and the second operating device is different from another gap.