Patent ID: 6308672
Filing Date: 2001-10-30
Classification: F01L

Abstract:
front-mounting camshaft phaser module for shifting rotational phase between an engine crankshaft and intake valve camshaft and between an engine crankshaft and an exhaust valve camshaft, comprising:a) a housing connectable to said engine;b) a first cam phaser sub-assembly including a timing sprocket, stator, rotor, a plurality of chambers formed between said stator and said rotor, cover plate, and oil commutator, said first phaser sub-assembly being disposed on an end of said intake valve camshaft and extending into a first well in said housing;c) a second cam phaser sub-assembly including a timing sprocket, stator, rotor, a plurality of chambers formed between said stator and said rotor, cover plate, and oil commutator, said second phaser sub-assembly being disposed on an end of said exhaust valve camshaft and extending into a second well in said housing;d) a first control valve sub-assembly disposed on an outer surface of said housing and having oil inlet and outlet ports in communication with said commutator in said first cam phaser sub-assembly for passing oil into and out of said chambers to vary the phase relationship between said crankshaft and said intake valve camshaft;e) a second control valve sub-assembly disposed on an outer surface of said housing and having oil inlet and outlet ports in communication with said commutator in said second cam phaser sub-assembly for passing oil into and out of said chambers to vary the phase relationship between said crankshaft and said exhaust valve camshaft.