| 摘要 |
PROBLEM TO BE SOLVED: To realize early warming up of an engine for quickly starting waste heat recovery and improving fuel economy. SOLUTION: The waste heat recovery device 100 includes an engine body 1 which is cooled by boiling of a cooling medium inside, an overheat evaporator 7 which performs heat exchange between the cooling medium flowing from the engine body 1 side through a cooling medium supply passage 3 and the exhaust air exhausted from the engine body 1, and a turbine part 9 which recovers energy from the vaporized cooling medium which passes through the overheat evaporator 7. The waste heat recovery device 100 further includes a cooling medium recovery passage 10 which recirculates the cooling medium from which the energy is recovered by the turbine part 9 to the engine body 1 side. A solenoid valve 14 is arranged in the cooling medium supply passage 3, and a unidirectional valve 15 is arranged in the cooling medium recovery passage 10. The waste heat recovery device 100 is divided into the engine body 1 and the overheat evaporator 7 by the solenoid valve 14 and the unidirectional valve 15 during warming up of the engine body 1. COPYRIGHT: (C)2011,JPO&INPIT
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