Patent ID: 7987830

Claim:
An oil supply structure of a continuously variable valve timing apparatus, comprising: a first oil filter configured to receive oil from a main gallery and filter impurities therefrom; a first oil control valve configured to receive oil from the first oil filter; a first continuously variable valve timing apparatus configured to receive oil from the first oil control valve; a second oil filter configured to receive oil from the main gallery and filter impurities therefrom; a second oil control valve configured to receive oil from the second oil filter; a second continuously variable valve timing apparatus configured to receive oil from the second oil control valve; and an oil supply line disposed in a cylinder head, that fluidly connects the main gallery, the first and second oil filters, the first and second oil control valves, and the first and second continuously variable valve timing apparatuses; wherein the oil supply line comprises: a first oil passage configured to receive oil from the main gallery; a second oil passage that is connected with the first oil passage and configured to supply oil to the first and second oil filters; a third oil passage that interconnects the first oil filter and the first oil control valve; a fourth oil passage that interconnects the first oil control valve and the first continuously variable valve timing apparatus; a fifth oil passage that interconnects the second oil filter and the second oil control valve; and a sixth oil passage that interconnects the second oil control valve and the second continuously variable valve timing apparatus.