Methods and systems are provided for improving operation of a vehicle heating, ventilation, and air conditioning system. In one example, a method may include calibrating a vehicle humidity sensor position inside a cabin of the vehicle by obtaining one or more humidity measurements with one or more personal computing devices positioned inside the cabin, and may further include adjusting operation of the heating, ventilation, and air conditioning system responsive to the calibration. In this way, an interior humidity sensor of a vehicle may be regularly calibrated, which may improve operation of the vehicle heating, ventilation, and air conditioning system, and may further increase fuel economy.

Methods and systems are provided for improving operation of a vehicle heating, ventilation, and air conditioning system. In one example, a method may include calibrating a vehicle humidity sensor position inside a cabin of the vehicle by obtaining one or more humidity measurements with one or more personal computing devices positioned inside the cabin, and may further include adjusting operation of the heating, ventilation, and air conditioning system responsive to the calibration. In this way, an interior humidity sensor of a vehicle may be regularly calibrated, which may improve operation of the vehicle heating, ventilation, and air conditioning system, and may further increase fuel economy.

An air conditioning system has a heat pump, a first-liquid-medium circuit in which a first liquid medium circulates, a second-liquid-medium circuit in which a second liquid medium circulates, a heat source, a connection switching device, and a controller. The connection switching device switches between a connection state in which the heat source is connected to the second-liquid-medium circuit and a disconnection state in which the heat source is disconnected from the second-liquid-medium circuit. The controller controls the connection switching device to switch between the connection state and the disconnection state based on a heat-related physical quantity relating to a heat of the first-liquid-medium circuit, a heat-related physical quantity a heat of the second-liquid-medium circuit, a heat-related physical quantity the heat generated by the heat source, or a heat-related physical quantity a heat of the heat pump.

An air conditioning system has a heat pump, a first-liquid-medium circuit in which a first liquid medium circulates, a second-liquid-medium circuit in which a second liquid medium circulates, a heat source, a connection switching device, and a controller. The connection switching device switches between a connection state in which the heat source is connected to the second-liquid-medium circuit and a disconnection state in which the heat source is disconnected from the second-liquid-medium circuit. The controller controls the connection switching device to switch between the connection state and the disconnection state based on a heat-related physical quantity relating to a heat of the first-liquid-medium circuit, a heat-related physical quantity a heat of the second-liquid-medium circuit, a heat-related physical quantity the heat generated by the heat source, or a heat-related physical quantity a heat of the heat pump.

A vehicular air conditioning system includes an intake unit configured to inhale an indoor air and an outdoor air. The intake unit includes an outdoor air inlet configured to introduce the outdoor air, an indoor air inlet configured to introduce the indoor air and a plurality of doors configured to selectively open the outdoor air inlet and the indoor air inlet. The intake unit further includes an auxiliary indoor air introduction part configured to introduce the indoor air. The auxiliary indoor air introduction part is configured to introduce a part of the indoor air existing on the side of the indoor air inlet.

A vehicle includes a traction battery, an electric machine powered by the traction battery and configured to power wheels of the vehicle, and a thermal-management system. The thermal-management system includes a battery loop, a cabin heating loop, and a valve configured to fluidly connect the battery loop and the cabin heating loop when in a first position and configured to fluidly isolate the battery loop and the cabin heating loop when in a second position. A controller is programmed to, responsive to (i) battery heating being requested, (ii) a temperature of the battery being greater than a lower threshold, and (iii) cabin heating being requested, actuate the valve to the first position to heat a cabin and the battery.

A vehicle includes a traction battery, an electric machine powered by the traction battery and configured to power wheels of the vehicle, and a thermal-management system. The thermal-management system includes a battery loop, a cabin heating loop, and a valve configured to fluidly connect the battery loop and the cabin heating loop when in a first position and configured to fluidly isolate the battery loop and the cabin heating loop when in a second position. A controller is programmed to, responsive to (i) battery heating being requested, (ii) a temperature of the battery being greater than a lower threshold, and (iii) cabin heating being requested, actuate the valve to the first position to heat a cabin and the battery.

An air-conditioning system for a vehicle is provided. The system includes a heating blower and a cooling blower that are disposed on opposite sides with an adjustment space being interposed there between. A first duct and a second duct transfer outside air or inside air and extend in the axial direction of the heating blower and the cooling blower. An inlet door unit is disposed in the adjustment space and adjusts the air introduced from the first duct or the second duct to be selectively supplied to the heating blower or the cooling blower. A condenser and an evaporation core are respectively disposed in the radial directions of the heating blower and the cooling blower and are connected via a refrigerant line. An outlet door unit regulates the air to be selectively discharged to the indoor space or the outdoor space.

An air-conditioning system for a vehicle is provided. The system includes a heating blower and a cooling blower that are disposed on opposite sides with an adjustment space being interposed there between. A first duct and a second duct transfer outside air or inside air and extend in the axial direction of the heating blower and the cooling blower. An inlet door unit is disposed in the adjustment space and adjusts the air introduced from the first duct or the second duct to be selectively supplied to the heating blower or the cooling blower. A condenser and an evaporation core are respectively disposed in the radial directions of the heating blower and the cooling blower and are connected via a refrigerant line. An outlet door unit regulates the air to be selectively discharged to the indoor space or the outdoor space.

An air conditioner for a vehicle which can reduce ventilation resistance and secure a sufficient cross-sectional area of an air outlet to prevent deterioration in air volume. The air conditioner includes: an air-conditioning case having an air passageway formed therein and a plurality of air outlets formed at an exit thereof, and at least one heat exchanger disposed in the air passageway of the air-conditioning case to exchange heat with air passing through the air passageway, wherein the air outlet includes a center vent for discharging air-conditioned wind toward the center of a vehicle width and a side vent for discharging the air-conditioned wind toward the side of the vehicle width, and one between the center vent and the side vent is arranged in an upper side of the air-conditioning case, and the other is arranged in one side of the air-conditioning case in a back-and-forth direction of the vehicle.