A VCT system for an internal combustion engine having at least one camshaft and
a VCT phaser mounted to the camshaft. The phaser having a plurality of advance
chambers and retard chambers, an advance line in fluid communication with the advance
chamber and leading to a cam bearing area of the camshaft, and a retard line in
fluid communication with the retard chamber and leading to the cam bearing area
of the camshaft. A cam bearing supports the cam bearing area around the camshaft
and has ports aligned with the advance line and the retard line. A plurality of
seals are located inside the cam bearing. At least one seal is between the ports
to the advance line and the retard line, and a pair of seals are on opposite sides
of the ports aligned with the advance and retard line. A control system is located
separately from the phaser.