10/06/2024
What is CVT transmission and how does it work?
The CVT (continuously variable transmission) transmission uses a double variator, and through pulleys linked together by a steel belt. Each pulley is moved by hydraulic pressure. This pressure is fed by the oil pump. the CVT in order to determine the separation between pulleys and the speed ratio to which it will be subjected. The position of the pulleys is made in such a way that the belt is always in tension to avoid dislocation of the belt that would cause the transmission to be damaged and neutralized.
Depending on the position of the accelerator pedal and the selector lever. The hydraulic system determines the separation of the pulley opening in order to execute the required change. Forward or reverse speed is provided by a conventional timing assembly
The harvesting pulleys, as already mentioned, use a mechanism similar to that of the bicycle where the chain or belt is always tensioned, but this is done thanks to a change in the dimensions of the sprockets or in this case a variation in the diameter of the pulleys. They do it thanks to an electrohydraulic work that with pressure and hydraulic fluid generates this variation in diameters thanks to the fact that the pulleys expand or close to give downward and upward movement to the metal belt.
speed mechanism
(position D: Drive)
The transmission of force begins at the flywheel, which transmits the movement to the primary shaft of the gearbox. With the forward gear clutch closed and the brake open, the planet carrier and the output ring of the epicyclic gear are made integral with the primary shaft, forming a rotation block, with which the movement is transmitted to the driving pulley. . Through the metal belt the force reaches the driven pulley and as long as the vehicle is stationary but with the engine started, the starter clutch will remain open to prevent transmission. As soon as D is selected on the gear lever, the brake is released and the a
