| 摘要 |
PROBLEM TO BE SOLVED: To provide a waste heat utilization device for an internal combustion engine, capable of properly functioning both of a cooling water heating circuit and a Rankine cycle circuit of the internal combustion engine, according to an operation state of the internal combustion engine. SOLUTION: The waste heat utilization device comprises a cooling water circuit 8 having a radiator 26 cooling the cooling water, and the Rankine cycle circuit 4 forming a heat exchanging area by an evaporator 8 and a heat exchanger 12, and forming an energy generating area 56 by an expansion machine 14 and a condenser 16. The Rankine circuit has bypass passages 4c, 4e bypassing the energy generating area, and a flow passage switching means forming a heat pipe path making working fluid heated by the heat exchanger flow into the evaporator by switching to the bypass passages, and heating the cooling water by the working fluid. COPYRIGHT: (C)2008,JPO&INPIT
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