Internal combustion engine vapor supercharging waste heat recovery system

The invention discloses an internal combustion engine vapor supercharging waste heat recovery system. According to the technical scheme, internal combustion engine cylinder sleeve cooling water is in tandem connection with the cold end of a thermoelectric generator, an expansion machine, a preheater and a circulating water pump sequentially through pipelines to form into a cooling water heat utilization circulating system; air performed air suction compression through a compressor is sent to an internal combustion engine; an exhaust pipe of the internal combustion engine is in tandem connection with the thermal end of the thermoelectric generator, the gas side of an evaporator sequentially to form into an exhaust thermal utilization system; a preheater is in tandem connection with the working medium side of the evaporator, a turbine expansion machine, the working medium side of the condenser and a working medium pump sequentially to form into an organic rankine cycle system; the compressor is in shaft connection with a turbo machine to form into a turbosupercharger. The internal combustion engine vapor supercharging waste heat recovery system has the advantages of breaking the temperature limit of the recycle source of the organic rankine cycle, recycling the waste heat energy of the exhaust and the cooling water, achieving efficient utilization of the waste heat, avoiding the condition that the exhaust energy is not enough to drive a supercharging system when the load is low, increasing the effective working range of the supercharging system and achieving the purpose of efficiently recycling the waste heat energy.