GEAR BOX FOR A HYBRID VEHICLE, AND DRIVE TRAIN FOR A HYBRID VEHICLE

Transmission (G) for a hybrid vehicle, wherein the transmission (G) has a drive shaft (GW1), an output shaft (GW2), an electric machine (EM) with a rotationally fixed stator (S) and a rotatable rotor (R), a gear set (RS) with a first and a second planetary gear set (P1, P2), which together have four shafts (W1, W2, W3, W4) designated in the order of their speed sequence as first, second, third and fourth shafts, as well as at least a first, second, and third switching element (A, B, D), wherein a plurality of forward gears (G1-G3) can be engaged between the drive shaft (GW1) and the output shaft (GW2) through selective pairwise closing of the switching elements (A, B, D), wherein the drive shaft (GW1) can be connected via the first switching element (A) to the first shaft (W1) and via the second switching element (B) to the third shaft (W3), wherein the second shaft (W2) is in constant rotationally fixed connection with the output shaft (GW2), wherein the fourth shaft (W4) can be rotationally fixed via the third switching element (D), and wherein the rotor (R) of the electric machine (EM) is in constant operative connection with the third shaft (W3) via a fixed transmission ratio.