Continuous variable valve duration apparatus and engine provided with the same

A continuous variable valve duration apparatus comprising:

• a camshaft;
• a first cam portion and a second cam portion on which two cams are formed respectively, on which a cam key is formed, of which the camshaft is inserted thereto, of which relative phase angles with respect to the camshaft are variable, disposed on one cylinder and an adjacent cylinder respectively, and of which a cam cap engaging portion is formed between the cams respectively;
• a first inside bracket and a second inside bracket transmitting rotation of the camshaft to the first and second cam portions respectively and on which a first sliding opening and a second sliding opening are formed respectively;
• a slider housing of which the first and second inside brackets are rotatably inserted thereto, of which relative position with respect to the camshaft is variable and of which a guide protruded portion is formed at an upper side portion thereof;
• cam caps of which each cam cap engaging portion is rotatably connected thereto;
• a connecting bracket connecting the cam caps and of which a guide opening for the guide protruded portion to be inserted thereto for guiding movement of the slider housing is formed thereto;
• a slider pin rotatably inserted into the first sliding opening and slidably inserted into the camshaft;
• a cam pin of which a cam key opening for the cam key to be slidably inserted thereto is formed and rotatably inserted into the second sliding opening;
• and
• a controller selectively changing a position of the slider housing.