ABNORMALITY DETECTION APPARATUS AND ABNORMALITY DETECTION METHOD FOR RANKINE CYCLE SYSTEM

摘要

An abnormality detection apparatus (100) for a Rankine cycle system (1) includes: a gas-liquid separator (5) that separates a cooling medium that circulates in an internal combustion engine (2) into a gas-phase and a liquid-phase; a superheater (7) that gives waste heat of the engine (2) to the cooling medium; a waste heat recoverer (4) that recovers energy of waste heat of the cooling medium; a valve (13) provided in a passageway (32); a liquid surface sensor (53) that detects liquid surface level of the liquid-phase cooling medium in the gas-liquid separator (5); a vapor temperature sensor (54) that detects temperature of the gas-phase cooling medium in the superheater (7); and an ECU (50) that determines whether the valve (13) is abnormal on the basis of the amount of the liquid-phase cooling medium and the temperature of the gas-phase cooling medium if abnormality of the cooling medium supply portion of the engine (2) is not detected.