POWER UNIT FOR A HYBRID ELECTRIC VEHICLE

A power unit for a hybrid electric vehicle comprising an internal combustion engine coupled to a gearbox, the gearbox having an output shaft with an axis of rotation, a first rotary device mounted on a first side of the axis of rotation of the output shaft, a second rotary device mounted on a second side of the axis of rotation of the output shaft, opposite said first side, each of said first and second rotary devices having a respective rotor shaft disposed parallel to the output shaft of the gearbox and being mechanically coupled to said output shaft for transmitting torque between the respective rotor shaft and the output shaft, wherein said first and second rotary devices are arranged substantially symmetrically about a plane aligned with the axis of rotation of the output shaft of the gearbox.