Patent ID: 6684836
Filing Date: 2004-02-03
Classification: F01L

Abstract:
An internal combustion engine comprising:a camshaft that drives an engine valve; a cam bracket fixed to a cylinder head and rotatably supporting therebetween the camshaft; a head cover that covers an upper portion of the cylinder head at which the camshaft and the cam bracket are provided; a variable valve timing mechanism provided at an end of the camshaft and actuated by oil pressure for varying a valve timing; an oil pressure control valve that controls the oil pressure; and an oil passage fluidly connecting between the oil pressure control valve and the variable valve timing mechanism; wherein the oil pressure control valve is installed on the head cover; and wherein the oil passage includes: a first oil passage section formed in the camshaft and in communication with the variable valve timing mechanism; a second oil passage section formed in the head cover and in communication with the oil pressure control valve; and a third oil passage section formed in the cam bracket and providing communication between the first oil passage section and the second oil passage section.