RANKINE CYCLE DEVICE

PROBLEM TO BE SOLVED: To control a Rankine cycle device with satisfactory response property to prevent temperature of steam generated in an evaporator from overshooting target temperature even when the operation condition of an engine is changed and heat energy of exhaust gas is abruptly increased. SOLUTION: When steam temperature cannot be controlled to target temperature because heat energy of exhaust gas is suddenly changed in accordance with change of load of the engine E even when amount of water supply to the evaporator 11 is operated by a water supply amount controller 27 of a temperature control means 21 to make the temperature of steam supplied from the evaporator 11 of the Rankine cycle device to an expander coincide with the target temperature, a water injection amount controller 24 of a temperature control means 21 supplies water to any position from a combustion chamber to the evaporator 11 in an expansion process or an exhaust process of the engine E to suppress the overshooting of steam temperature due to rapid increase of heat energy of exhaust gas securely by cooling exhaust gas by the water. COPYRIGHT: (C)2006,JPO&NCIPI