NOVELTY - The internal combustion engine (1) has a circuit having a connection line (13) through which water is passed to a waste heat usage system (3). An evaporator exhaust gas heat exchanger (16) and an exhaust gas recirculation evaporator heat exchanger (17) are provided for heating and/or evaporation of water with exhaust gas. Evaporated water is liquefied by a capacitor (19). Water is collected at a water collecting and compensating tank (21). Water is passed from capacitor to evaporator exhaust gas recirculation heat exchanger and to evaporator exhaust gas heat exchanger.    USE - Internal combustion engine for use in motor vehicle e.g. truck.    ADVANTAGE - The working fluid in the evaporator is heated with the exhaust gas heat exchanger, and is partially vaporized in the evaporator, for complete evaporation and superheating by the exhaust gas recirculation heat exchanger. The waste heat of internal combustion engine can be utilized effectively by Clausius-Rankine cycle process. Hence thermal stress of the evaporator exhaust gas recirculation heat exchanger can be reduced to prolong the durability of the internal combustion engine. The temperature of the evaporator exhaust gas recirculation heat exchanger can be reduced to ensure homogeneous distribution of the working fluid, without contributing to local dehydration in some areas of the evaporator exhaust gas recirculation heat exchanger. The formation of hot-spots can be avoided, so that the overall performance of the internal combustion engine can be improved.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for method for operating internal combustion engine.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view illustrating the structure of internal combustion engine.    Internal combustion engine (1)    Waste heat usage system (3)    Evaporator exhaust gas heat exchanger (16)    Exhaust gas recirculation evaporator heat exchanger (17)    Capacitor (19)    Water collecting and compensating tank (21)