-
公开(公告)号：US20250033438A1
公开(公告)日：2025-01-30
申请号：US18359165
申请日：2023-07-26
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Devin C. Richardson
Abstract: A method of operating a heating, ventilation and air conditioning (HVAC) system of a vehicle includes operating the HVAC system in a heating mode to heat a supply airflow and direct the heated supply airflow into a passenger compartment of the vehicle; and selectably directing a flow of refrigerant through an evaporator of the HVAC system to reduce a relative humidity of the supply airflow by condensing excess moisture out of the supply airflow at the evaporator.
-
公开(公告)号：US11685234B2
公开(公告)日：2023-06-27
申请号：US17375890
申请日：2021-07-14
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Devin C. Richardson , Cameron Paul Smith , Anthony James Donatelli , Nathan John English , Tanay Kalpej Patel
CPC classification number: B60H1/3205 , B60H1/00392 , B60H1/00485 , B60H1/3227 , B60H2001/326 , B60H2001/3266 , B60H2001/3272 , B60H2001/3279 , B60H2001/3285
Abstract: A control system includes a refrigerant recovery module and at least one of a valve control module and a compressor control module. The refrigerant recovery module is configured to generate a refrigerant recovery signal to initiate a recovery of refrigerant from a first heat exchanger of a thermal system for an electric vehicle, and to stop the refrigerant recovery based on a temperature of refrigerant circulating through the first heat exchanger. The valve control module is configured to open a first valve to allow refrigerant to flow through the first heat exchanger in response to the refrigerant recovery signal. The compressor control module is configured to increase a speed of a compressor disposed upstream from the first heat exchanger in response to the refrigerant recovery signal.
-
3.发明申请公开(公告)号：US20230012558A1
公开(公告)日：2023-01-19
申请号：US17305753
申请日：2021-07-14
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Devin C. Richardson , Nathan J. English , Anthony J. Donatelli , Cameron P. Smith , Tanay K. Patel
Abstract: Presented are joint active thermal management (JATM) systems with heat exchanger storage of surplus refrigerant, methods for making/operating such systems, and vehicles equipped with such systems. A JATM system includes a coolant loop that fluidly connects to a vehicle battery system for pumping thereto coolant, an oil loop thermally coupled to the coolant loop and fluidly connected to a vehicle powertrain system for pumping thereto oil, and a refrigerant loop thermally coupled to the coolant loop and operable to circulate refrigerant for heating/cooling a passenger compartment. An electronic controller determines if a current amount of refrigerant in the refrigerant loop exceeds a calibrated threshold for the current operating mode of the JATM system. If so, the controller determines if one of the refrigerant loop's heat exchangers is available to store excess refrigerant. If the heat exchanger is available, the refrigerant loop stores excess refrigerant in the available refrigerant heat exchanger.
-
4.发明授权公开(公告)号：US11541719B1
公开(公告)日：2023-01-03
申请号：US17305753
申请日：2021-07-14
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Devin C. Richardson , Nathan J. English , Anthony J. Donatelli , Cameron P. Smith , Tanay K. Patel
Abstract: Presented are joint active thermal management (JATM) systems with heat exchanger storage of surplus refrigerant, methods for making/operating such systems, and vehicles equipped with such systems. A JATM system includes a coolant loop that fluidly connects to a vehicle battery system for pumping thereto coolant, an oil loop thermally coupled to the coolant loop and fluidly connected to a vehicle powertrain system for pumping thereto oil, and a refrigerant loop thermally coupled to the coolant loop and operable to circulate refrigerant for heating/cooling a passenger compartment. An electronic controller determines if a current amount of refrigerant in the refrigerant loop exceeds a calibrated threshold for the current operating mode of the JATM system. If so, the controller determines if one of the refrigerant loop's heat exchangers is available to store excess refrigerant. If the heat exchanger is available, the refrigerant loop stores excess refrigerant in the available refrigerant heat exchanger.
-
-
-
Search Results
4
records
(took 0.013 seconds)
