A transmission (G) for a motor vehicle includes an electric machine (EM1), a first input shaft (GW1), a second input shaft (GW2), an output shaft (GWA), two planetary gear sets (P1, P2, P3), and at least five shift elements (A, B, C, D, E). Different gears are implementable by selectively actuating the at least five shift elements (A, B, C, D, E) and, in addition, in interaction with the electric machine (EM1), different operating modes are implementable. A drive train for a motor vehicle with the transmission (G), and to a method for operating the transmission (G) are also provided.

A transmission (G) for a motor vehicle includes an electric machine (EM1), a first input shaft (GW1), a second input shaft (GW2), an output shaft (GWA), two planetary gear sets (P1, P2, P3), and at least five shift elements (A, B, C, D, E). Different gears are implementable by selectively actuating the at least five shift elements (A, B, C, D, E) and, in addition, in interaction with the electric machine (EM1), different operating modes are implementable. A drive train for a motor vehicle with the transmission (G), and to a method for operating the transmission (G) are also provided.

A control apparatus for a vehicle includes an input-rotation limiting portion configured, when the vehicle starts running and is accelerated, to calculate an estimated speed value that is a speed value of an input rotational speed of an automatic transmission upon elapse of a predetermined length of time, and to calculate an estimated force value that is a force value of a piston pressing force acting on a piston in a forward direction in a released engagement device upon the elapse of the predetermined length of time, based on a centrifugal hydraulic pressure in a pressure chamber of the released engagement device and the centrifugal hydraulic pressure in a canceller chamber of the released engagement device. When the estimated force value is not smaller than a predetermined threshold, the input-rotation limiting portion restrains an increase of the input rotational speed.

A control apparatus for a vehicle includes an input-rotation limiting portion configured, when the vehicle starts running and is accelerated, to calculate an estimated speed value that is a speed value of an input rotational speed of an automatic transmission upon elapse of a predetermined length of time, and to calculate an estimated force value that is a force value of a piston pressing force acting on a piston in a forward direction in a released engagement device upon the elapse of the predetermined length of time, based on a centrifugal hydraulic pressure in a pressure chamber of the released engagement device and the centrifugal hydraulic pressure in a canceller chamber of the released engagement device. When the estimated force value is not smaller than a predetermined threshold, the input-rotation limiting portion restrains an increase of the input rotational speed.

Planetary gear systems, transmissions, and apparatuses include a plurality of compound planet gears, each having three gear stages, a first non-fixed annular gear, a second non-fixed annular gear, a fixed annular gear, and a non-fixed sun gear. A rotational input to the non-fixed sun gear results in opposite rotational outputs of the first non-fixed annular gear and the second non-fixed annular gear. Compound planet gears and carriers for planetary gear systems are also disclosed.