Toroidal infinitely variable ratio drive variator for road vehicle with internal combustion engine has rotary cylinder turning axis of rotation of roller with respect to driving and driven toroids

摘要

The variator (26) has a driving toroid (28) pressed toward a driven toroid (30) with a power transmission roller (34) between them. The axle (48) carrying the roller is mounted in the ends of a carrier fork (50) rotatable (54) about its longitudinal axis. The fork is rotated by a rotary piston-cylinder assembly (70) connected to a hydraulic control circuit (80).