Vehicular rankine cycle system

摘要

A vehicular Rankine cycle system includes: an evaporator for heating a liquid-phase working medium with thermal energy of exhaust gas of an engine so as to generate a gas-phase working medium; a displacement type expander for converting thermal energy of the gas-phase working medium generated by the evaporator into mechanical energy; gas-phase working medium controller for controlling the temperature and/or pressure of the gas-phase working medium supplied to the expander at a target temperature and/or a target pressure by changing the amount of liquid-phase working medium supplied to the evaporator; and throttle opening degree controller for controlling a throttle opening degree of the engine by correcting an accelerator opening degree directed by a driver. The throttle opening degree controller controls the throttle opening degree so as to suppress a rise in thermal energy of the exhaust gas, thus inhibiting the temperature and/or pressure of the gas-phase working medium from overshooting the target temperature and/or the target pressure.