Patent ID: 6508213
Filing Date: 2003-01-21
Classification: F01P,F02B,F16H

Abstract:
A drive assembly for driving an auxiliary member of an internal combustion engine, said assembly comprising:a first drive pulley connected to and driven by a rotatable member of said internal combustion engine; a second driven pulley connected to said auxiliary member; a belt disposed about said first and second pulleys to transmit power there between; wherein at least one of said first and second pulleys is an adjustable pulley having an adjustable drive ratio; and an actuator operatively connected to said drive assembly and controlling said drive ratio of said at least one of said first and second pulleys to selectively determine a desired rotational speed of said auxiliary member, wherein said actuator includes an adjustable idler mechanism disposed between said first and second pulleys and engaging said belt, said adjustable idler mechanism moveable within a displacement range to adjust a travel length of said belt between said first and second pulleys thereby changing said drive ratio of said at least one of said first and second pulleys.