Retention bolt for a cam phaser

摘要

A central bolt (28) for attaching a camshaft phaser (16) to a camshaft (24) of an internal combustion engine (10). The bolt (28) also functions as oil supply means and is provided with a first longitudinal passage (100), for supplying engine oil under pressure from a front camshaft bearing (26) to an oil control valve (20) disposed in an outer cover (18) of the phaser (16), and with second (108) and third (110) longitudinal passages for supplying phaser control oil from the oil control valve (20) to advance (44) and retard (46) chambers within the phaser (16).