METHOD TO CONTROL THE EXECUTION OF AN UPSHIFT WITH A RELEASED ACCELERATOR PEDAL IN A DRIVETRAIN PROVIDED WITH A DUAL-CLUTCH, SERVO-ASSISTED TRANSMISSION

A method to control the execution of a shift to a higher gear with a released accelerator pedal (22) in a drivetrain (6) provided with a dual-clutch, servo-assisted transmission (7), comprising the steps of: opening, in a first instant (t), an outgoing clutch (16A); closing, in the first instant (t), an incoming clutch (16B); synchronizing, between a second instant (t) and a third instant (t), a rotation speed (ω) of the internal combustion engine (4) with a rotation speed (ω) of the incoming clutch (16B), namely with the rotation speed (ω) imposed by the gear ratio of the following gear (B); completely opening, in the third instant (t), the outgoing clutch (16A); completely closing, in the third instant (t), the incoming clutch (16A); keeping the torque (T) transmitted by the outgoing clutch (16A) constant between the second instant (t) and a fourth instant (t); and keeping the torque (T) transmitted by the incoming clutch (16B) constant between the second instant (t) and the fourth instant (t).