METHOD TO AUTOMATICALLY CONTROL A DRIVETRAIN PROVIDED WITH A SERVO-ASSISTED TRANSMISSION

A method to automatically control a drivetrain (6) provided with a servo-assisted transmission (7); the method comprises the steps of: measuring a rotation speed (ω) of the internal combustion engine (4); carrying out a shift to a lower gear in an autonomous manner and independently of an intervention of a driver, when the rotation speed (ω) of the internal combustion engine (4) reaches a lower threshold (TH); carrying out a shift to a higher gear in an autonomous manner and independently of an intervention of the driver, when the rotation speed (ω) of the internal combustion engine (4) reaches an upper threshold (TH); detecting a release of an accelerator pedal (22) in a first instant (t); waiting, starting from the first instant (t), a time interval (TO) until a second instant (t), which is subsequent to the first instant (t); and increasing a value of the lower threshold (TH) starting from the instant (t) until a following pressing of the accelerator pedal (22).