Drive system, comprising: a combustion engine ; and a cooling device for discharging heat from the combustion engine; wherein the cooling device comprises: a radiator for transferring heat to a surrounding medium, wherein in particular the radiator is an air cooler and the surrounding medium is air; and a thermodynamic cycle device , in particular an ORC device, having a working medium, an evaporator for evaporating the working medium by transferring waste heat of the combustion engine to the working medium, an expansion device for generating mechanical energy, and a condenser for condensing the working medium expanded in the expansion device ; wherein the cooling device comprises a condenser coolant circuit for discharging heat from the condenser of the thermodynamic cycle device via the radiator ; and wherein the cooling device further comprises a combustion engine coolant circuit , wherein a first branch of the combustion engine coolant circuit passes through the evaporator for transferring heat to the working fluid; characterized in that the combustion engine coolant circuit in the flow direction of a cooling fluid upstream of the evaporator comprises a first branch-off into a second branch of the combustion engine coolant circuit for bypassing the evaporator and a merging of the second branch with the first branch downstream of the evaporator , the second branch comprising a first valve , preferably a controlled valve. a combustion engine ; and a cooling device for discharging heat from the combustion engine; wherein the cooling device comprises: a radiator for transferring heat to a surrounding medium, wherein in particular the radiator is an air cooler and the surrounding medium is air; and a thermodynamic cycle device , in particular an ORC device, having a working medium, an evaporator for evaporating the working medium by transferring waste heat of the combustion engine to the working medium, an expansion device for generating mechanical energy, and a condenser for condensing the working medium expanded in the expansion device ; a radiator for transferring heat to a surrounding medium, wherein in particular the radiator is an air cooler and the surrounding medium is air; and a thermodynamic cycle device , in particular an ORC device, having a working medium, an evaporator for evaporating the working medium by transferring waste heat of the combustion engine to the working medium, an expansion device for generating mechanical energy, and a condenser for condensing the working medium expanded in the expansion device ; wherein the cooling device comprises a condenser coolant circuit for discharging heat from the condenser of the thermodynamic cycle device via the radiator ; and wherein the cooling device further comprises a combustion engine coolant circuit , wherein a first branch of the combustion engine coolant circuit passes through the evaporator for transferring heat to the working fluid; characterized in that the combustion engine coolant circuit in the flow direction of a cooling fluid upstream of the evaporator comprises a first branch-off into a second branch of the combustion engine coolant circuit for bypassing the evaporator and a merging of the second branch with the first branch downstream of the evaporator , the second branch comprising a first valve , preferably a controlled valve. <EOS>