Patent ID: 7798030

Claim:
A transmission design for a hybrid twin-clutch transmission and a twin-clutch transmission including in a transmission housing ( 99 ) a main shaft arrangement having two main shafts ( 11 , 12 ) and two counter shafts ( 23 , 24 ) with drive power flowing alternatively via the two countershafts ( 23 , 24 ), said countershafts being arranged parallel to, and at a distance from, one another and the main shaft arrangement, twin clutches ( 10 ) arranged at an input end of the transmission for selectively connecting at least one of the main shafts ( 11 , 12 ) of the main shaft arrangement to an internal combustion engine, said transmission including an internal space for accommodating an electric motor/generator ( 112 ) for hybrid function for rotation with one of the main shafts ( 11 , 12 ) via a step-up stage ( 93 or 94 ), the electric motor/generator being rotationally fixedly connected to one clutch ( 8 or 9 ) of the twin clutch ( 10 ), in such a way as to permit both, recuperation and also exclusive travel drive by means of the electric motor/generator ( 112 ), and also a starter Motor (M) provided in order to start the internal combustion engine at least under cold starting conditions.