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AssigneesNingbo Geely Automobile Research & Dev. Co., Ltd., Zhejiang Geely Holding Group Co., Ltd.
InventorsEmil Frykberg, Henrik Fellbom, Kristian Nicklasson, Mikael Larsson
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A method for controlling a refrigeration system of a vehicle includes a circuit containing a refrigerant, a compressor, and first and second evaporators which are connected in parallel to the compressor, and a first expansion valve arranged upstream the first evaporator that regulates a pressure drop of the refrigerant before the first evaporator, and a second expansion valve arranged upstream the second evaporator that regulates a pressure drop of the refrigerant before the second evaporator, and a condenser arranged downstream the compressor between the compressor and the first and second expansion valves. The method includes controlling a total opening of the first expansion valve and the second expansion valve, based on a temperature and a pressure of the refrigerant which refrigerant temperature and refrigerant pressure are measured downstream the first and second evaporators at a position between the first and second evaporators and the compressor.
A method for controlling a refrigeration system of a vehicle, the refrigeration system comprising a circuit containing a refrigerant, a compressor, and a first evaporator and a second evaporator which are connected in parallel to the compressor, and a first expansion valve arranged upstream the first evaporator, which first expansion valve regulates a pressure drop of the refrigerant before the first evaporator, and a second expansion valve arranged upstream the second evaporator, which second expansion valve regulates a pressure drop of the refrigerant before the second evaporator, and a condenser arranged downstream the compressor between the compressor and the first and second expansion valves, the circuit having a main circuit, a first subcircuit for the first evaporator and a second subcircuit for the second evaporator, wherein controlling a total opening of the first expansion valve and the second expansion valve, based on a temperature and a pressure of the refrigerant which refrigerant temperature and refrigerant pressure are measured downstream the first and second evaporators at a position between the first and second evaporators and the compressor in the main circuit, the measuring position being situated between a point, where the first subcircuit and the second subcircuit merge into the main circuit, and an inlet of the compressor, and
A control unit for controlling a refrigeration system of a vehicle, the refrigeration system comprising a circuit containing a refrigerant, a compressor, and a first evaporator and a second evaporator which are connected in parallel to the compressor, and a first expansion valve arranged upstream the first evaporator, which first expansion valve regulates a pressure drop of the refrigerant before the first evaporator, and a second expansion valve arranged upstream the second evaporator, which second expansion valve regulates a pressure drop of the refrigerant before the second evaporator, and a condenser arranged downstream the compressor between the compressor and the first and second expansion valves, the circuit having a main circuit, a first subcircuit for the first evaporator and a second subcircuit for the second evaporator, wherein the control unit is configured to control a total opening of the first expansion valve and the second expansion valve, based on a temperature and a pressure of the refrigerant which refrigerant temperature and refrigerant pressure are measured downstream the first and second evaporators at a position between the first and second evaporators and the compressor in the main circuit, the measuring position being situated between a point, where the first subcircuit and the second subcircuit merge into the main circuit, and an inlet of the compressor, and
Dependencies are inferred from the claim text.