Patent ID: 6631700
Filing Date: 2003-10-14
Classification: F01L

Abstract:
An arrangement of a dual oil feed variable timed camshaft for an automotive vehicle internal combustion engine comprising:a camshaft having a radial side and an extreme longitudinal end face, said camshaft having a first passage fluidly connecting said end face with said radial side away from said end face, said first passage including a longitudinal bore with a threaded portion, said camshaft also having a second passage fluidly separated from said first passage connecting said end face with said radial side away from said end face; a hub with a face for abutting connection with said camshaft end face, said hub having a central opening intersecting with said first and said second passage of said camshaft, said hub having at least first and second radial passages intersecting with said hub central opening axially spaced from one another; a timing pulley assembly mounted on said hub having relative rotational movement with respect to said hub; at least one movable pressure boundary connected to one of said timing pulley assembly and said hub, said pulley assembly and said hub defining a pressure chamber which is bifurcated by said movable pressure boundary into a first directional angle space intersecting with said hub first radial passage and a second directional angle space intersecting with said hub second radial passage; a fastener having a head and a threaded shank extending therefrom, said fastener shank having intersecting longitudinal and radial bores fluidly connecting said camshaft first passage with said hub first radial passage, and said fastener head contacting said hub to fasten said hub with said camshaft; and a sealing member providing an interface between said fastener shank and said hub central opening to separate portions of said hub central opening exposed to said hub first radial passage from portions of said hub central opening exposed to said hub second radial passage.