Abstract: A vehicle having a heating and cooling system includes a refrigerant loop having first and second heat exchangers, and a coolant loop. The coolant loop is connected to allow a first flow of coolant to be directed through at least one of a plurality of air-to-coolant heat exchangers and at least one component for regulating a temperature of the at least component, and to allow a second flow of coolant to be directed through at least one other of the plurality of air-to-coolant heat exchangers and the at least one component for regulating the temperature of the at least one component dependent upon a mode of operation. A control module, control unit, controller, or the like commonly used in vehicles controls the first and second flows of coolant dependent upon the mode of operation.

Abstract: A vehicle having a heating and cooling system includes a refrigerant loop having first and second heat exchangers, a compressor, and an expansion device, and a coolant loop. The coolant loop is connected, in one embodiment, to allow a first flow of coolant to be directed through each of a plurality of heat exchangers and an auxiliary coolant loop and to allow a second flow of coolant to be directed through each of the plurality of heat exchangers and the auxiliary coolant loop dependent upon a mode of operation. A control module controls the first and second flows dependent upon the mode of operation. In one other embodiment, the coolant loop includes manifolds and reservoirs with regulating sending and receiving ports for directing the flows. The auxiliary coolant loop is for heating/cooling one or more components, such as a battery, dependent upon the mode of operation.

Abstract: A vehicle having a heating and cooling system includes a cold source through which a first flow of coolant flows, a heat source through which a second flow of coolant flows, and first and second parallel connected air-to-coolant heat exchangers. The first and second coolant flows are directed through one or both of the air-to-coolant heat exchangers dependent upon a mode of operation. A control module controls the first and second flows of coolant dependent upon the mode of operation.

Abstract: An HVAC unit is provided for treating air in a passenger cabin of a vehicle. An HVAC housing has a recirculation entry section, a fresh entry section, a blower section, and an output section. A blower is mounted to the blower section for driving an airflow from the HVAC housing out through the output section into the passenger cabin. A recirculation opening is provided proximate the recirculation entry section for providing at least a base recirculation flow from the passenger cabin into the HVAC housing whenever the blower drives the airflow. A climate sensor is fluidically coupled within the base recirculation flow for sensing a climate characteristic representative of the air in the passenger cabin.

Abstract: A vehicle having a heating and cooling system includes a refrigerant loop having first and second heat exchangers, a compressor, and an expansion device, and a coolant loop. The coolant loop is connected, in one embodiment, to allow a first flow of coolant to be directed through each of a plurality of heat exchangers and an auxiliary coolant loop and to allow a second flow of coolant to be directed through each of the plurality of heat exchangers and the auxiliary coolant loop dependent upon a mode of operation. A control module controls the first and second flows of coolant dependent upon the mode of operation. In one other embodiment, the coolant loop includes first and second manifolds and reservoirs with regulating sending and receiving ports for directing the first and second flows. The auxiliary coolant loop is for heating/cooling one or more components, such as a battery, dependent upon the mode of operation.

Abstract: A vehicle having a heating and cooling system includes a refrigerant loop having first and second heat exchangers, and a coolant loop. The coolant loop includes a plurality of valves directing a first flow of coolant through the first refrigerant-to-coolant heat exchanger, a second flow of coolant through the second refrigerant-to-coolant heat exchanger, and a third flow of coolant including a first portion of the first flow of coolant exiting the first refrigerant-to-coolant heat exchanger and a first portion of the second flow of coolant exiting the second refrigerant-to-coolant heat exchanger through an auxiliary coolant loop, and a control module for controlling the plurality of valves to direct the flows of coolant dependent upon a mode of operation. The auxiliary coolant loop is for heating/cooling one or more components, such as a battery, dependent upon the mode of operation.

Abstract: A refrigerant composition of R-1234yf and R-744 is disclosed. In some embodiments, the R-744 is 5% or less by weight of the composition. In instances where PVE is utilized as a lubricant with the refrigerant, R-744 may be 50% or less of the composition. Systems utilizing the refrigerant and methods of using such are also disclosed.

Abstract: A refrigerant composition of R-1234yf, R-134a, R-744 and R-152a is described, wherein R-152a and R-134a comprise 16% by weight or less of the overall composition. The refrigerant compositions may be utilized in heat transfer systems as an efficient and environmentally safe refrigerant.

Abstract: A heat transfer composition for use in a mobile air-conditioning system in a vehicle, includes a first component comprised of a hydrofluoroolefin refrigerant. A second component of the composition includes a polyvinylether lubricant. The heat transfer composition is compatible for use in a mobile air-conditioning system when the mobile air-conditioning system is powered by a mechanically driven compressor, and is also compatible for use in the mobile air-conditioning system when the mobile air-conditioning system is powered by an electrically driven compressor built-in to the mobile air-conditioning system.

Abstract: A heat transfer composition for use in a mobile air-conditioning system in a vehicle, includes a first component comprised of a hydrofluoroolefin refrigerant. A second component of the composition includes a polyvinylether lubricant. The heat transfer composition is compatible for use in a mobile air-conditioning system when the mobile air-conditioning system is powered by a mechanically driven compressor, and is also compatible for use in the mobile air-conditioning system when the mobile air-conditioning system is powered by an electrically driven compressor built-in to the mobile air-conditioning system.

Abstract: A HVAC system including a multi-function unit for conditioning and controlling the flow of refrigerant. The multi-function unit may be contained within a housing that houses a receiver/dryer, integral heat exchanger and thermal expansion valve.

Abstract: A HVAC system including a multi-function unit for conditioning and controlling the flow of refrigerant. The multi-function unit may be contained within a housing that houses a receiver/dryer, integral heat exchanger and thermal expansion valve.

Abstract: An HVAC unit is provided for treating air in a passenger cabin of a vehicle. An HVAC housing has a recirculation entry section, a fresh entry section, a blower section, and an output section. A blower is mounted to the blower section for driving an airflow from the HVAC housing out through the output section into the passenger cabin. A recirculation opening is provided proximate the recirculation entry section for providing at least a base recirculation flow from the passenger cabin into the HVAC housing whenever the blower drives the airflow. A climate sensor is fluidically coupled within the base recirculation flow for sensing a climate characteristic representative of the air in the passenger cabin.