System and method for estimating quality of refrigerant at inlet of compressor in thermal system of electric vehicle
US12115837B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2021 |
| Grant date | Oct 15, 2024 |
| Priority date | — |
| Expiry date | Dec 11, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2011/0093
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.