Free wheels

Free wheels

The free wheels consist of two concentric races and a cage enclosing a set of asymmetrical pawls, which permit the relative rotation of the two races in a particular direction (A), while in the opposite direction the pawls jam, preventing relative rotation and providing a reaction torque.

The roller clutch F0 connects the clutch carrier drum D and crownwheel K1 of the gear set P1 when the clutch C1 is active, and the motion comes from the gearbox input shaft.

The roller clutch F1 prevents the anti-clockwise rotation of the crownwheel K2 of the gear set P2.

HYDRAULIC CONTROL SYSTEM

The operation of the automatic transmission is made possible by the operation of the clutches and brakes, via hydraulic actuators driven by valves which move in accordance with the commands issued by the control module. The feed is provided by a gear pump, driven directly by the engine through the torque converter.

A cooling radiator and fan controlled by a thermal switch keeps the oil temperature within pre-established limits.