Patent ID: 8857181

Claim:
A drive train, comprising: a hydrodynamic retarder which one of is in and can be switched to a drive connection with the drive train, said hydrodynamic retarder including a working chamber which one of is and can be filled with a working medium in order to generate a braking torque in a hydrodynamic way; an expansion machine which is driven with one of a fluid and steam as a working medium, said expansion machine configured for one of supplying a drive power to the drive train and driving one of said electric generator and another unit, said working medium of said retarder being simultaneously said working medium of said expansion machine; an engine; and a cooling circuit in which a cooling medium is revolved to cool said engine, said working medium of said retarder and said expansion machine and said cooling medium being fluidly decoupled from one another and being thermally coupled to one another at said hydrodynamic retarder.