Ambient humidity virtual sensor
AssigneeGM Global Technology Operations LLC
InventorsMin Sun, David Eugene Edwards, Cameron Paul Smith, Rupesh Sonu Kakade
Life of this patent
Estimating the term…
Abstract
A method of operating a cooling system of a vehicle includes 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.
Claims18
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.
A cooling system of a vehicle, comprising:
- a refrigerant circuit having a flow of refrigerant circulating therethrough, the refrigerant circuit including:
- a compressor;
- an evaporator;
- one or more refrigerant pressure sensors;
- and
- one or more refrigerant temperature sensors;
- a refrigerant circuit controller operably connected to the refrigerant circuit, the refrigerant circuit controller configured to:
- estimate a relative humidity of a supply airflow across the evaporator utilizing a measured refrigerant pressure and a measured refrigerant temperature;
- and
- change operation of one or more components of the refrigerant circuit as a result of the estimated relative humidity;
- wherein the refrigerant circuit controller is configured to estimate the relative humidity utilizing a 2-zone moving boundary refrigerant dynamic model.
Dependencies are inferred from the claim text.