US 12,447,797 B2
Ambient humidity virtual sensor
Min Sun, Troy, MI (US); David Eugene Edwards, Rochester Hills, MI (US); Cameron Paul Smith, Milford, MI (US); and Rupesh Sonu Kakade, West Bloomfield, MI (US)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed on May 8, 2023, as Appl. No. 18/313,449.
Prior Publication US 2024/0375480 A1, Nov. 14, 2024
Int. Cl. B60H 1/00 (2006.01); B60H 1/32 (2006.01)
CPC B60H 1/00785 (2013.01) [B60H 1/0073 (2019.05); B60H 2001/3252 (2013.01); B60H 2001/3261 (2013.01); B60H 2001/3263 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method of operating a cooling system of a vehicle, comprising:
measuring a refrigerant pressure and a refrigerant temperature of a flow of refrigerant in a refrigerant circuit of the cooling system;
estimating a relative humidity of a supply airflow across an evaporator of the refrigerant circuit utilizing the measured refrigerant pressure and the measured refrigerant temperature; and
changing operation of one or more components of the refrigerant circuit as a result of the estimated relative humidity;
wherein the relative humidity is estimated utilizing a 2-zone moving boundary refrigerant dynamic model.