Continuous variable valve duration apparatus and engine provided with the same

A continuous variable valve duration apparatus comprising:

• a camshaft;
• first and second cam portions on which a cam is formed, respectively, the camshaft being inserted to the first and second cam portions of which relative phase angles with respect to the camshaft are variable;
• first and second inner brackets configured to transmit rotation of the camshaft to the first and second cam portions respectively;
• a slider housing in which the first and second inner brackets are rotatably inserted, a relative position of the slider housing with respect to the camshaft being variable, and a control slot formed on the slider housing;
• a cam cap configured to rotatably support the first and the second cam portions, and the slider housing slidably mounted on the cam cap;
• a control shaft parallel to the camshaft, and a control rod eccentrically formed on the control shaft;
• an eccentric plate rotatably connected to the control rod and rotatably inserted into the control slot;
• and
• a control portion configured to selectively rotate the control shaft so as to control a position of the slider housing.