Internal combustion engine with evaporative cooling and waste heat utilization

An internal combustion engine with evaporative cooling and waste heat utilization in a common vapor circulation system, the internal combustion engine comprising:

• a first exhaust gas heat exchanger disposed in an exhaust gas recirculation system of the internal combustion engine;
• an evaporator system, which is fluidly connected to the first exhaust gas heat exchanger, the evaporator system being formed from a cooling jacket heat exchanger inside the internal combustion engine in a housing for the evaporative cooling;
• a second exhaust gas heat exchanger disposed in the exhaust gas recirculation system, which is fluidly connected to the evaporator system;
• an expansion machine, which is fluidly connected to the second exhaust heat exchanger;
• a condenser, which is fluidly connected to the expansion machine;
• a feed pump, which is fluidly connected to the condenser and, in turn, to the first exhaust gas heat exchanger;
• a third exhaust gas heat exchanger disposed in an exhaust gas train, the first exhaust gas heat exchanger being fluidically connected to the second exhaust gas heat exchanger via the third exhaust gas heat exchanger and then via the cooling jacket heat exchanger;
• and
• a valve unit that is fluidically connected to the first exhaust gas heat exchanger and the second exhaust gas heat exchanger, the valve unit being configured to provide at least two different line paths in the evaporator system while also providing various switching states between the first exhaust gas heat exchanger and second exhaust gas heat exchanger,
• wherein, in a first switching state of the valve unit, the first exhaust gas heat exchanger is fluidically connected, via the third exhaust gas heat exchanger and then via the cooling jacket heat exchanger, to the second exhaust gas heat exchanger, and
• wherein, in a second switching state of the valve unit, the first exhaust gas heat exchanger is fluidically connected, via the cooling jacket heat exchanger and then via the third exhaust gas heat exchanger, to the second exhaust gas heat exchanger.

An internal combustion engine, comprising:

• a common vapor circulation system configured to perform evaporative cooling and waste heat utilization, the common vapor circulation system comprising:
• a first exhaust gas heat exchanger disposed in an exhaust gas recirculation system,
• a third exhaust gas heat exchanger disposed in an exhaust gas train,
• a cooling jacket heat exchanger,
• a second exhaust gas heat exchanger disposed in the exhaust gas recirculation system,
• one or more valves configured to provide, in a directional flow path for the working medium between the first exhaust gas heat exchanger and the second exhaust gas heat exchanger, at least a first line path and a second line path,
• an expansion machine,
• a condenser, and
• a feed pump,
• wherein the cooling jacket heat exchanger is formed from a housing of the internal combustion engine;
• wherein the common vapor circulation system provides a directional flow path for a working medium that extends from the first exhaust gas heat exchanger to the second exhaust gas heat exchanger via the third exhaust gas heat exchanger and the cooling jacket heat exchanger;
• wherein the first line path connects the first exhaust gas heat exchanger, first via the third exhaust gas heat exchanger and then via the cooling jacket heat exchanger, to the second exhaust gas heat exchanger;
• and
• wherein the second line path connects the first exhaust gas heat exchanger, first via the cooling jacket heat exchanger and then via the third exhaust gas heat exchanger, to the second exhaust gas heat exchanger.