Transmission device and method for controlling and regulating a transmission device

A method for controlling and regulating a transmission device (1) having a first planetary gearset (2) being driven solely by a single drive input shaft (6), the first planetary gearset (2) having a first shaft (4) connected to the drive input shaft (6), a second shaft (7) being one of at least two drive output shafts (7, 8) and a third shaft (9) which is in active communication with a first brake (19);

• and
• a second planetary gearset (3) being driven solely by the single drive input shaft (6), the second planetary gearset (3) having a fourth shaft (5) connected to the drive input shaft (6), a fifth shaft (8) being another of the at least two drive output shafts (7, 8) and a sixth shaft (10) which is in active communication with a second brake (20),
• the third shaft (9) communicates with the first brake (19) and the sixth shaft (10) communicates with the second brake (20) such that a degree of distribution of the drive torque between the at least two drive output shafts (7, 8) varies as a function of transfer capacities of the first and the second brakes (19, 20), and the first planetary gearset (2) and the second planetary gearset (3) communicating only via an engagement between the first shaft (4) and the fourth shaft (5), the method comprising the steps of:
• adjusting the transfer capacities of the first and the second brakes (19, 20) such that one of the first and the second brakes (19, 20) is engaged, to distribute a drive torque of a power source between the two output shafts (7, 8) of the transmission device (1);
• and
• varying the transfer capacity of another of the first and the second brakes (20 or 19) between a lower limiting value (W(u)) and an upper limiting value (W(o)), which corresponds to an engaged condition of the first and second brakes(19, 20).

A drive train (28) of a vehicle with at least two driven vehicle axles (29, 30) and at least one transmission device (1) having a first planetary gearset (2) having a first shaft (4) connected to a drive input shaft (6), a second shaft (7) being one of at least two drive output shafts (7, 8) and a third shaft (9) which is in active communication with a first brake (19);

• and
• a second planetary gearset (3) having a fourth shaft (5) connected to the drive input shaft (6), a fifth shaft (8) being another of the at least two drive output shafts (7, 8) and a sixth shaft (10) which is in active communication with a second brake (20) and the drive input shaft (6) being the sole drive input for the transmission device (1),
• the third shaft (9) communicates with the first brake (19) and the sixth shaft (10) communicates with the second brake (20) such that a degree of distribution of the drive torque between the at least two drive output shafts (7, 8) varies as a function of transfer capacities of the first and the second brakes (19, 20),
• the transmission device (1) is arranged in a power path between a power source and the vehicle axles (29, 30) to distribute drive torque from the power source between the vehicle axles (29, 30), as necessary, and in a manner that depends on at least one operating situation, and in a power path of a vehicle axle (29 or 30) to distribute a fraction of the drive torque delivered to the vehicle axle (29 or 30) in a transverse direction of the vehicle between two drive wheels of the vehicle axle (29 or 30), as necessary, and in a manner that depends on the operating situation, and the second shaft (7) being solely driven by the first planetary gearset (2) and the fifth shaft (8) being solely driven by the second planetary gearset (3)without any sun gear or carrier of the first planetary gearset (2) being connected with any sun gear or carrier of the second planetary gearset (3).