Patents by Inventor Ryan D. HOPPER

Ryan D. HOPPER has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • System and method for estimating quality of refrigerant at inlet of compressor in thermal system of electric vehicle
    Patent number: 12115837
    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.
    Type: Grant
    Filed: October 4, 2021
    Date of Patent: October 15, 2024
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Neeraj S. Shidore, Min Sun, David Eugene Edwards, Ryan D. Hopper
  • SYSTEM AND METHOD FOR ESTIMATING QUALITY OF REFRIGERANT AT INLET OF COMPRESSOR IN THERMAL SYSTEM OF ELECTRIC VEHICLE
    Publication number: 20230107888
    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.
    Type: Application
    Filed: October 4, 2021
    Publication date: April 6, 2023
    Inventors: Neeraj S. SHIDORE, Min SUN, David E. EDWARDS, Ryan D. HOPPER