Patent ID: 7942121
Filing Date: 2011-05-17
Classification: F01L,F01M

Abstract:
1. A camshaft system for an internal combustion engine, comprising: a cylinder head; at least one camshaft mounted upon a plurality of bearing surfaces contained in said cylinder head; at least one annular thrust ring incorporated in said at least one camshaft; a first combination lubricant reservoir and thrust reactor, formed in said cylinder head, for engaging said thrust ring; a control valve, mounted to said cylinder head, for operating a camshaft phaser, with said control valve furnishing lubricating oil under pressure to said camshaft phaser; at least one lubricant drain passage for conducting post-phaser lubricating oil from the control valve to the combination lubricant reservoir and thrust reactor at crankcase pressure; and a second combination lubrication reservoir and thrust reactor formed in the cylinder head, with said second combination reservoir and thrust reactor being furnished with lubricant overflowing from said first combination reservoir and thrust reactor.