Patent ID: 8459220
Filing Date: 2013-06-11
Classification: F01L,Y10T

Abstract:
1. A concentric phaser camshaft, comprising: an outer camshaft member; an inner camshaft member being rotatably mounted within the outer camshaft member; at least one pinned lobe structure comprising a pair of valve actuating lobes, each valve actuating lobe being at a selected angular position with respect to a bore through the pinned lobe structure, the selected angular position for a first valve actuating lobe of the pair differing from the selected angular position for the other valve actuating lobe of the pair and wherein the pinned lobe structure is affixed to the inner camshaft member by a pin extending through the bore and into the inner camshaft member, the pin extending through a slot in the outer camshaft member such that the pinned lobe structure rotates with the inner camshaft member relative to the outer camshaft member; and at least on lobe structure comprising a bearing journal, at least one valve actuating lobe and an index feature, the index feature indicating a pre-selected angular position for the at least one valve actuating lobe and the index feature assisting in angularly locating the at least one lobe structure with respect to the outer camshaft member while the lobe structure is affixed to the outer camshaft member by an interference fit.