System and method for estimating quality of refrigerant at inlet of compressor in thermal system of electric vehicle

System and method for estimating quality of refrigerant at inlet of compressor in thermal system of electric vehicle

A system includes a compressor outlet temperature module, a refrigerant quality module, and a correction factor module. The compressor outlet temperature module is configured to estimate a temperature at an outlet of a compressor in a thermal system of an electric vehicle. The refrigerant quality mo...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Hopper, Ryan D, Sun, Min, Shidore, Neeraj S, Edwards, David Eugene
Format: Patent
Sprache:eng
Schlagworte:
ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING,OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODSSPACES OF VEHICLES
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PERFORMING OPERATIONS
PHYSICS
TESTING
TRANSPORTING
VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:A system includes a compressor outlet temperature module, a refrigerant quality module, and a correction factor module. The compressor outlet temperature module is configured to estimate a temperature at an outlet of a compressor in a thermal system of an electric vehicle. The refrigerant quality module is configured to estimate a quality of refrigerant at an inlet of the compressor based on an enthalpy at the compressor inlet and an inlet enthalpy correction factor. The refrigerant quality is a ratio of vapor refrigerant mass to total refrigerant mass. The correction factor module is configured to determine the inlet enthalpy correction factor based on the estimated compressor outlet temperature and a temperature measured at the compressor outlet.