Patent ID: 8713939

Claim:
An exhaust heat recovery system for recovering, by using a Rankine cycle, exhaust heat from an internal-combustion engine, the system comprising: a refrigerant-filling-amount adjuster for arbitrarily adjusting a filling amount of refrigerant in the Rankine cycle depending on super-cooling degree of the refrigerant in the Rankine cycle, the refrigerant-filling-amount adjuster including: a low-pressure-side valve connected to a low-pressure circuit portion of the Rankine cycle, a high-pressure-side valve connected to a high-pressure circuit portion of the Rankine cycle, and a refrigerant tank, for storing the refrigerant, connected to the low-pressure-side valve and the high-pressure-side valve, wherein the internal-combustion engine or an electric heater heats the refrigerant tank to adjust an internal temperature and an internal pressure of the refrigerant tank to inject refrigerant under pressure into an inlet of a condenser at the low-pressure circuit portion of the Rankine cycle.