Patent ID: 6186105
Filing Date: 2001-02-13
Classification: F01L

Abstract:
A variable valve timing mechanism for an internal combustion engine having a cam shaft having a bearing portion at one end thereof for journaling in an engine body at least in part by a bearing cap fixed to said engine body by threaded fasteners disposed on opposite sides of said cam shaft bearing portion, a variable valve timing mechanism associated with said one end of said cam shaft for driving said cam shaft from an engine crankshaft and for varying the phase angle between said cam shaft and the engine crankshaft, said bearing portion being formed with at least one circumferential groove for receiving hydraulic fluid for actuating said variable valve timing mechanism, and a valve element mounted by said bearing cap for controlling the flow of fluid therethrough to said groove, said valve element being spaced relative to said threaded fasteners in the direction of the axis of said cam shaft.