Variable camshaft timing system with remotely located control system

摘要

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 (102) and retard chambers (104), an advance line (108) in fluid communication with the advance chamber and leading to a cam bearing area of the camshaft (126), and a retard line (110) 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 (128) 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.