| 摘要 |
The invention relates to a vehicle drive train, in particular of a heavy goods vehicle or rail vehicle, comprising a hydrodynamic retarder with a rotor and a stator, or a rotor and a counter-rotating rotor, said combinations forming a working chamber, in which a circulating flow can be established for a working medium to hydrodynamically transfer torque from the rotor to the stator or the counter-rotating rotor (4), or comprising a dynamic retarder with a rotor and a stator, or a rotor and a counter-rotating rotor to transfer torque from the rotor electrodynamically by means of a magnetic force or by means of liquid or mechanical friction, the torque transfer or heat dissipation from the retarder being achieved by means of a working medium. The drive train also comprises an expander (6), which is operated by a working medium in the form of a fluid or steam and which is used to supply mechanical drive power to the drive train. The invention is characterised in that the retarder and the expander are united by one or several of the following features: the rotor and/or the counter-rotating rotor have a drive connection to the expander or such a connection can be established; a heat exchanger conducts the working medium of the retarder and the working medium of the expander to dissipate heat from said two components and to partially or completely condense the working medium of the expander; the working medium of the retarder is conducted through a heat exchanger, which simultaneously conducts the working medium of the expander, or is conducted through the expander in such a way that the heat introduced into the working medium in the retarder is converted into mechanical energy in the expander; a control system comprising a pressurised control medium is provided to activate and deactivate the retarder, the working medium of the expander also constituting the control medium. |
