Patent ID: 6824067
Filing Date: 2004-11-30
Classification: F01P,F02B,F16H,H02K

Abstract:
A method of facilitating the cooling of engine coolant flowing through a radiator, comprising the steps of:monitoring temperature of the engine coolant in the radiator; positioning a fan adjacent the radiator; supporting the fan on a rotatable fan shaft having a driven fan pulley attached thereto, the driven fan pulley including a groove formed therein; providing a drive pulley having a groove formed therein, the groove having a predetermined depth; positioning a fan belt about the groove of the driven fan pulley and the groove of the drive pulley such that rotation of the drive pulley is translated to the driven fan pulley by the fan belt; rotating the fan at a predetermined speed; and varying the speed of the fan in response to the temperature of the engine coolant by varying the depth of the groove in the drive pulley.