Variable camshaft timing system with remotely located control system
Patent No. 6,971,354
Issued: December 6, 2005
Inventors: Smith; Franklin R. (Cortland, NY); Wing; Braman (Interlaken, NY)
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.
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