HYBRID DRIVE UNIT AND METHOD FOR STARTING A VEHICLE WITH A HYBRID DRIVE UNIT

The invention relates to a hybrid drive unit comprising an internal combustion engine (1) with an electric machine (1a) having an integrated gear mechanism (B), which can be operated as a motor and generator, wherein the electric machine (1a) of the hybrid drive unit (A) assumes the function of an electromagnetic clutch and wherein a gear mechanism (B) is designed as a permanently excited rotor of the electric machine (1a).