Abstract: A drivetrain for a hybrid electric vehicle is provided. The drivetrain includes a motor-generator connected to an engine shaft and transmission via a planetary gear set.

Abstract: The present invention relates to a drivetrain (2) for a motor vehicle, having an engine (4) which has a drivable engine shaft (8) with a tirst axial direction (12), having a transmission (16) which has a transmission input shaft (18) in rotationally driving connection with the engine shaft (8), having an electric machine (26) which has a rotor (30) and a stator (32) and which can be operated in a generator mode and a starter mode, and having a planetary gear set (38) which has three elements (42, 44, 46), specifically a sun gear (50), a planet gear carrier (48) with planet gear carriers (54), and a ring gear (52), of which a first element (42), which forms the drive input side of the planetary gear set (38) in the generator mode and forms the drive output side of the planetary gear set (38) in the starter mode, is in rotationally driving connection with the engine shaft (8), a second element (44), which forms the drive output side of the planetary gear set (38) in the generator mode and forms the drive input