Abstract: A control method of shifting gear in an automatic manual transmission having a twin-clutch gearbox to pass from a current gear to a successive gear, the control method including the steps of receiving a command of gear shifting, opening a first clutch associated with current gear, closing a second clutch which is associated with successive gear and starts transmitting a torque after a delay time interval from the start of the closing, and starting the opening of first clutch, thus decreasing the torque transmitted by first clutch itself before second clutch starts transmitting a torque, such that first clutch decreases the torque transmitted to the driving wheels before the second clutch starts transmitting a torque to the driving wheels.

Abstract: An embodiment of a control method for carrying out a gear shifting in an automatic manual transmission having a dual-clutch gearbox to pass from a current shorter gear to a successive longer gear; the embodiment includes the steps of: receiving a gear shifting command; opening a first clutch associated to the current gear; closing a second clutch associated to the successive gear in a same first moment; finishing the opening of the first clutch associated to the current gear and finishing the closure of the second clutch associated to the successive gear in a same closing moment; keeping the rotation speed of the drive shaft of the engine constant and equal to an initial value imposed by the gear ratio of the current gear until the closing moment in which the opening of the first clutch is completed; after the closing moment, progressively decreasing the rotation speed of the drive shaft of the engine from the initial value imposed by the gear ratio of the current gear to a final value imposed by the gear rat

Abstract: A control method for controlling, during a gear shifting or during a drive-away, a vehicle provided with an automatic manual transmission, the control method including the steps of: determining, in a design phase, a transmissibility function of a clutch, which provides the torque which is transmitted by clutch according to the degree of opening of clutch itself, determining an engine model in a design phase, determining a target torque which must be transmitted by means of clutch during the gear shifting or during the drive-away, controlling clutch for pursuing target torque which must be transmitted by means of clutch by using the transmissibility function, determining a target engine torque of engine according to target torque which must be transmitted by means of clutch and controlling the engine to pursue a target engine torque by using a feedforward control based on the engine model.

Abstract: A control method for closing a clutch in an automatic manual transmission during a gear shifting to pass from a current gear to a successive gear; the automatic manual transmission has a gearbox provided with at least one primary shaft and at least one secondary shaft connected to driving wheels, and at least one clutch interposed between the primary shaft of the gearbox and a drive shaft of an engine; the control method includes, during the closing of the clutch, when the rotation speed of an engine side of the clutch is close to the rotation speed of a gearbox side of the clutch, the steps of: determining a speed difference between the rotation speed of the engine side of the clutch and the rotation speed of the gearbox side of the clutch; determining an acceleration target according to the speed difference; and determining a target torque that has to be transmitted through the clutch according to the acceleration target.