| 摘要 |
<P>PROBLEM TO BE SOLVED: To recover energy by early generating effective vapor for recovering energy, when starting an engine, in the engine for recovering the energy from waste heat by using a Rankine cycle. Ž<P>SOLUTION: A waste heat recovery device 1 of the engine includes a refrigerant passage 4 for circulating a refrigerant vaporized by waste heat of the engine, a superheater 5 for arranging a flow passage of exhaust gas and a flow passage of the refrigerant so as to exchange heat between the exhaust gas in an exhaust passage 3 and the refrigerant in the refrigerant passage 4, a power recovery machine 6 making refrigerant vapor vaporized this superheater 5 flow in and recovering the energy from the refrigerant vapor, a temperature sensor 10 for measuring the temperature of the superheater 5, a pump 8 for supplying the refrigerant of a liquid phase in the superheater 5, and an ECU 9. This ECU 9 switches a supply command signal of the refrigerant to the pump 8 based on the temperature measured by the temperature sensor 10. This waste heat recovery device 1 becomes empty in the superheater 5 by extracting the refrigerant in the superheater 5 when operation of the pump 8 is stopped by stopping of the engine. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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