Engine provided with continuous variable valve timing apparatus and continuous variable valve duration apparatus

An engine comprising:

• an electric continuously variable valve timing apparatus for adjusting an opening timing of an intake valve provided at a cylinder head;
• and
• a continuously variable valve duration apparatus for adjusting a duration of an exhaust valve provided at the cylinder head,
• wherein the electric variable valve timing apparatus comprises:
• an intake camshaft;
• first and second intake cam portions, wherein each of the first and second intake cam portions has two intake cams formed thereto, the intake camshaft is inserted into the first and second intake cam portions, and relative phase angles of the first and second intake cam portions with respect to the intake camshaft are variable;
• first and second intake inner brackets transmitting rotation of the intake camshaft to the first and second intake cam portions respectively;
• first and second intake slider housings having the first and second intake inner brackets rotatably inserted therein, respectively, and having relative positions with respect to the intake camshaft that are variable;
• an intake cam cap rotatably supporting the first and second intake cam portions together with the cylinder head, wherein the first and second intake slider housings are slidably mounted to the intake cam cap;
• an intake control shaft disposed parallel to the intake camshaft and selectively moving the first and the second intake slider housings;
• and
• an intake control portion selectively rotating the intake control shaft to change positions of the first and second intake inner brackets.