OIL SUPPLY STRUCTURE FOR CAM SHAFT AND CONTINUOUS VARIABLE VALVE TIMING APPARATUS FOR AUTOMOBILE

摘要

PURPOSE: An oil supply structure for a cam shaft and a variable valve timing device for a vehicle is provided to effectively solve th problem of decreased fuel efficiency due to increase in engine friction caused by increased oil pressure. CONSTITUTION: An oil supply structure is formed between a cylinder head and a cam shaft(100) in an advance direction and a delay direction so that oil flowing from an oil pump can be supplied to a variable valve timing device through an oil control valve. The oil flows into the cam shaft through advance direction passages(200). A delay direction passage(500) is formed between the cam shaft and cam shaft center bolt(400). The oil flows into the variable valve timing device through the delay direction passage.