Abstract: A heating, ventilation, and air-conditioning (HVAC) system in a hybrid or battery-electric vehicle is provided. The HVAC system includes a compressor that has its own dedicated motor to control its speed. The compressor includes an inlet pressure sensor to determine and output the suction pressure, and an outlet pressure sensor to determine and output the discharge pressure of the compressor. At least one controller can be programmed to determine the discharge-to-suction pressure ratio, and limit the operating speed of the compressor in response to the ratio exceeding a pressure-ratio-threshold. The pressure-ratio-threshold can vary based on ambient air temperature. In the event an inlet pressure sensor is not available, the operating speed of the compressor can be reduced in response to the outlet pressure exceeding an ambient-temperature-based variable threshold.

Abstract: Methods and systems for providing control of a heat pump of a motor vehicle are presented. In one operating mode, speed of a heat pump compressor is controlled responsive to an outlet pressure of the heat pump compressor. In a second operating mode, speed of the heat pump compressor is controlled responsive to a pressure ratio between an inlet and an outlet of the heat pump compressor.

Abstract: A vehicle climate control system for an electrified vehicle including a thermal circuit and a controller is provided. The thermal circuit includes a heat pump and a positive temperature coefficient (PTC) heater. The controller is programmed to direct operation of the heat pump and the PTC heater responsive to receipt of a request for simultaneous cooling and heating based on a heat source mode table and detection of a system configuration in which flow is permitted through one of a fixed orifice expansion device (FOT), a thermal expansion valve (TXV), and an electronic expansion valve (EXV). The heat source mode table may call for the heat pump to operate in a cool mode and the PTC heater to operate in a heat mode when heater core coolant is identified as warm and ambient temperature is above a predetermined threshold.

Abstract: A method of climate control in a vehicle, which includes cooling a battery and cabin of a vehicle at a target chiller-pump speed of a chiller, the target speed corresponding to a difference between a temperature of an battery and a target temperature of the battery, and wherein the target pump speed does not exceed a limit defined by a look-up table that identifies a capacity of the chiller by mapping the load and the difference.

Abstract: A method of operating a vehicle climate system includes, by a controller, responsive to a same blower motor request, operating a blower motor at a first speed responsive to a heater core isolation valve (HCIV) directing coolant used to heat a cabin to an engine. The method further includes, by the controller, responsive to the same blower motor request, operating the blower motor at a second speed less than the first speed responsive to the HCIV directing the coolant to an electric heater and not to the engine.

Abstract: A method for controlling a vehicle climate control system includes steps of determining that a first predetermined set of conditions are satisfied whereby a heating, ventilation, and air-conditioning (HVAC) system airflow into a passenger cabin will exceed a predetermined HVAC airflow temperature threshold and, if so, automatically implementing a first climate control system operating condition at least reducing the HVAC airflow into the passenger cabin. On determining that a second predetermined set of conditions are satisfied whereby the HVAC airflow into the passenger cabin will satisfy the predetermined HVAC airflow temperature threshold, the method includes a step of automatically implementing a second climate control system operating condition increasing the HVAC airflow into the passenger cabin. Climate control systems for implementing the described methods are provided.

Abstract: A method according to an exemplary aspect of the present disclosure includes, among other things, conditioning a battery of an electrified vehicle while off charge in response to an operator request for improved performance as a tradeoff for decreased range. An electrified vehicle system according to an exemplary aspect of the present disclosure includes, among other things, a battery, an electric machine configured to receive electric power from the battery to drive vehicle wheels, and a system control that generates a control signal to condition the battery while off charge in response to an operator request for improved performance as a tradeoff for decreased range.

Abstract: A cooling system is provided for a traction battery of an electrified motor vehicle. That cooling system includes a cooling circuit, a refrigerant circuit, a plurality of flow control valves and a control system. That control system includes a controller configured to (a) control operation of the plurality of flow control valves, including a coolant proportional valve, and (b) prioritize cabin cooling over traction battery cooling.

Abstract: A vehicle climate control system includes a cooling system including a chiller, a coolant circuit, a refrigerant circuit, a pump, and a compressor. The coolant circuit bypasses the chiller. The refrigerant circuit incorporates the chiller. The pump is configured to move coolant through the coolant circuit. The compressor is configured to move refrigerant through the refrigerant circuit. The vehicle climate control system also includes a controller configured to, in response to a temperature of a battery exceeding a threshold while the pump is moving fluid through the coolant circuit, activate the chiller and the compressor.

Abstract: A system for a vehicle includes a traction battery, an engine, and a controller configured to inhibit requests to start the engine in response to both the vehicle being within a first radius about a previously-identified frequent destination and an available battery energy being greater than twice a total battery energy expended during a prior trip to the destination from a second radius about the destination, the second radius being smaller than the first radius.

Abstract: A climate-control system for a vehicle, comprising a controller in communication with a chiller configured to cool a vehicle battery and an evaporator configured to cool a vehicle cabin. The controller is configured to output a target chiller-pump speed based upon a difference between a battery coolant temperature and a target-battery coolant temperature to mitigate a temperature swing of air entering the cabin, and limiting the target chiller-pump speed in response to an available capacity of the chiller.

Abstract: An exemplary preconditioning method includes, among other things, preconditioning an electrified vehicle using power from an external source without charging a traction battery from the external source. An exemplary vehicle assembly includes, among other things, a conditioning system that preconditions an electrified vehicle using power from an external source, and a traction battery having a state of charge that does not increase as the conditioning system preconditions the electrified vehicle.

Abstract: A vehicle includes a controller that prompts a user to confirm a willingness to accept a reduced maximum acceleration or speed responsive to user confirmation of a desire to increase an electric drive range by a user selected amount. The controller further operates a propulsion system with the reduced maximum acceleration or speed to increase the electric drive range responsive to user confirmation of the willingness.

Abstract: A thermal system for an electrified vehicle including a thermal loop and a controller is provided. The thermal loop may include a rear evaporator and a compressor fluidly connected thereto, a conduit to distribute oil throughout the thermal loop, and an evaporator valve. The controller may be programmed to, responsive to receipt of a signal indicating evaporator valve shut-off and detection of a vehicle plug-in event, cycle the compressor to promote oil movement through the compressor. The controller may be further programmed to, responsive to receipt of the signal, open the evaporator valve to force oil back to the compressor. The thermal loop may further include a first expansion valve up stream of a chiller fluidly connected to the compressor, a second expansion valve between the evaporator valve and the rear evaporator, and a third expansion valve up stream of a front evaporator fluidly connected to the compressor.

Abstract: A system according to an exemplary aspect of the present disclosure includes, among other things, an electrified vehicle including a battery pack, a human-machine interface configured to receive inputs setting a charging profile, and a controller. The system further includes a battery system configured to selectively charge the battery pack in response to an instruction from the controller. Further, the controller is configured to instruct the battery system to charge the battery pack consistent with the charging profile.

Abstract: A cooling system is provided for a traction battery of an electrified motor vehicle. That cooling system includes a cooling circuit, a refrigerant circuit, a plurality of flow control valves and a control system. That control system includes a controller configured to (a) control operation of the plurality of flow control valves, including a coolant proportional valve, and (b) prioritize cabin cooling over traction battery cooling.

Abstract: A thermal system for a vehicle includes a compressor configured to pressurize refrigerant that selectively flows through a chiller for battery coolant and an evaporator for cabin cooling. The system further includes a controller programmed to, responsive to cabin cooling demand becoming zero, change from adjusting compressor speed responsive to changes in an evaporator temperature to adjusting compressor speed responsive to changes in a chiller refrigerant pressure.

Abstract: A vehicle includes a refrigerant system having a chiller and a coolant system having a chiller loop and a radiator loop. The chiller loop is arranged to circulate coolant through the chiller, and the radiator loop is arranged to circulate coolant through a battery, a radiator, and a bypass valve connected to a bypass conduit. A controller is configured to, in response to an ambient-air temperature exceeding a battery-coolant temperature, actuate the valve to circulate coolant to the bypass conduit to skip the radiator.

Abstract: A cooling system is provided for a traction battery of an electrified motor vehicle. That cooling system includes a cooling circuit, a refrigerant circuit, a plurality of flow control valves and a control system. That control system includes a controller configured to (a) control operation of the plurality of flow control valves and (b) prioritize cabin cooling over traction battery cooling.

Abstract: This disclosure relates to a system and method for heating an electrified vehicle. An exemplary electrified vehicle includes a passenger cabin, and an infrared heater configured to radiate heat for conditioning the passenger cabin. The vehicle further includes a heating device configured to heat airflow for conditioning the passenger cabin. Further, the vehicle includes a controller configured to selectively command a change in an output of the heating device based on an amount of power available to the infrared heater.