Automatic manual transmission for a hybrid car provided with an internal combustion engine and with an electrical machine

An automatic manual transmission for a hybrid car provided with an internal combustion engine and with an electrical machine;

• the automatic manual transmission comprising:
• a single-clutch mechanical gearbox, which is provided with:
• one primary shaft, which is suited to receive a torque from a crankshaft of the internal combustion engine, one secondary shaft, which is suited to transmit the torque to driving wheels, a plurality of pairs (I, II, III, IV) of gears, each of which has a corresponding gear ratio and comprises a primary gear, which is mounted on the primary shaft, and a secondary gear, which is mounted on the secondary shaft and meshes, in a permanent manner, with the primary gear, and a plurality of first servo-assisted locking devices, each of which is mounted on a shaft and is suited to be actuated so as to lock at least one corresponding gear to the shaft;
• a plurality of first actuators, each of which is coupled to a corresponding first locking device, so as to actuate the locking device;
• a differential gear, which receives the motion from the secondary shaft of the gearbox and transmits the motion to driving wheels;
• one clutch, which is interposed between the one secondary shaft of the gearbox and the differential gear;
• a second actuator, which is coupled to the clutch, so as to open and close the clutch;
• an auxiliary shaft, which is different and separate from the primary shaft and from the secondary shaft and along which the electrical machine is mounted;
• a first gear train, which is different and separate from the pairs (I, II, III, IV) of gears of the gearbox and connects a first end of the auxiliary shaft, which is arranged upstream of the electrical machine, to the primary shaft of the gearbox;
• and
• a second gear train, which is different and separate from the pairs (I, II, III, IV) of gears of the gearbox and connects a second end of the auxiliary shaft, which is arranged downstream of the electrical machine, to an output shaft of the clutch.