Waste-heat utilization assembly of an internal combustion engine, and method for operating the waste-heat utilization assembly

A waste-heat utilization assembly of an internal combustion engine, the waste-heat utilization assembly comprising:

• a control unit;
• and
• a working circuit configured to conduct a working medium;
• wherein the working medium flows in a direction through a feed pump, an evaporator, an expansion machine and a condenser arranged in the working circuit;
• wherein the evaporator is also arranged in an exhaust gas tract of the internal combustion engine;
• wherein an exhaust gas bypass channel is arranged in the exhaust gas tract parallel to the evaporator;
• wherein an exhaust gas bypass valve is configured to control a distribution of a mass flow of the exhaust gas of the internal combustion engine to the evaporator and to the exhaust gas bypass channel;
• wherein the waste-heat utilization assembly also comprises a cooling device configured to conduct a coolant;
• wherein the condenser is arranged in the cooling device,
• wherein a temperature sensor is arranged in the cooling device and is configured to measure an actual temperature;
• and
• wherein the control unit controls the exhaust gas bypass valve to have the actual temperature measured in the cooling device be less than or equal to a predetermined maximum temperature.