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US 2017/0204775 A1Published application
Rankine cycle system
AssigneeToyota Jidosha Kabushiki Kaisha
InventorHideo KOBAYASHI
Life of this patent
Estimating the term…
Abstract
A rankine cycle system includes: an internal combustion engine; a gas-liquid separator; a first pump; a steam generator; a superheater; an expander; a condenser; a first control valve; and a controller.
Claims4
A rankine cycle system comprising:
- an internal combustion engine cooled by a refrigerant circulating through the internal combustion engine;
- a gas-liquid separator;
- a first pump that supplies a refrigerant from the internal combustion engine to the gas-liquid separator, and supplies a liquid-phase refrigerant from the gas-liquid separator to the internal combustion engine again;
- a steam generator that transfers waste heat from the internal combustion engine to a liquid-phase refrigerant supplied from the gas-liquid separator, and supplies a refrigerant to the gas-liquid separator;
- a superheater that transfers waste heat from the internal combustion engine to a gas-phase refrigerant supplied from the gas-liquid separator;
- an expander driven by a refrigerant supplied from the superheater;
- a condenser that condenses a refrigerant supplied from the expander;
- a second pump that supplies a refrigerant from the condenser to the gas-liquid separator;
- a first control valve that controls a flow rate of a refrigerant from the internal combustion engine to the gas-liquid separator;
- and
- a controller that controls the first control valve to be close to a closing side, when a temperature of a refrigerant is low in the internal combustion engine, as compared with when a temperature of a refrigerant is high in the internal combustion engine.
8 more elements
A rankine cycle system comprising:
- an internal combustion engine cooled by a refrigerant circulating through the internal combustion engine;
- a gas-liquid separator;
- a first pump that supplies a refrigerant from the internal combustion engine to the gas-liquid separator, and supplies a liquid-phase refrigerant from the gas-liquid separator to the internal combustion engine again;
- a steam generator that transfers waste heat from the internal combustion engine to a liquid-phase refrigerant supplied from the gas-liquid separator, and supplies a refrigerant to the gas-liquid separator;
- a superheater that transfers waste heat from the internal combustion engine to a gas-phase refrigerant supplied from the gas-liquid separator;
- an expander driven by a refrigerant supplied from the superheater;
- a condenser that condenses a refrigerant supplied from the expander;
- a second pump that supplies a refrigerant from the condenser to the gas-liquid separator;
- a first path through which a liquid-phase refrigerant is capable of flowing from the gas-liquid separator;
- a second path through which a liquid-phase refrigerant is capable of flowing from the internal combustion engine;
- a third path that is capable of supplying a liquid-phase refrigerant to the internal combustion engine;
- and
- a thermostat that is provided at a junction point of the first, second, and third paths, closes the first path and communicates between the second and third paths when a temperature of a liquid-phase refrigerant supplied from the second path is lower than a predetermined value, and closes the second path and communicates between the first and third paths when a temperature of a liquid-phase refrigerant supplied from the second path is higher than the predetermined value.
10 more elements
Dependencies are inferred from the claim text.