Patent ID: 8326514
Filing Date: 2012-12-04
Classification: F16H

Abstract:
1. A drive for an internal combustion engine having a predetermined take-up rate (TU) and comprising a drive pulley having a first pitch radius (Rp 1 ), a driven pulley having a second pitch radius (Rp 2 ), a shoe hinged about an axis (A) and a toothed belt which is oil wet and cooperating in contact with a guiding surface of said shoe, being a winding angle (α) of said guiding surface comprised between a maximum value (α′max) and a minimum value (α′min) so that: where: α′ α′ α′rif is the winding angle of a shoe having a guiding surface consisting of an arc of circumference having diameter D′rif equal to the difference between a centre distance (I) of said drive pulley and said driven pulley and the sum of said first and second pitch radius (Rp