A refrigeration cycle device has a cooling heat exchanger, an evaporation-pressure control valve, an inside-air ratio adjuster, and a controller. The evaporation-pressure control valve controls an evaporation pressure of a refrigerant in the cooling heat exchanger. The inside-air ratio adjuster changes a ratio of an inside air to an entire volume of the air exchanging heat with the refrigerant in the cooling heat exchanger. The controller controls the inside-air ratio adjuster. The evaporation-pressure control valve increases the evaporation pressure of the refrigerant as a flow rate of the refrigerant flowing through the evaporation-pressure control valve increases. The controller, in a first mode, increases the ratio of the inside air as an evaporation temperature of the refrigerant in the cooling heat exchanger falls.

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.

In a vehicle air conditioner device of a heat pump system, control of an air mix damper is appropriately performed in each operation mode, thereby achieving efficient vehicle interior air conditioning. The vehicle air conditioner device includes an air mix damper 28 to adjust a ratio at which air in an air flow passage 3 passed through a heat absorber 9 is to be passed through a radiator 4. In a cooling mode, a controller controls the air mix damper 28 to adjust the ratio at which the air is to be passed through the radiator 4 on the basis of one, any combination, or all of a target outlet temperature, a temperature of the radiator and a temperature of the heat absorber, and in a heating mode, the controller controls the air mix damper 28 to pass all the air in the air flow passage 3 through the radiator 4.

A method for specifying a group of control commands for a motor vehicle is based on the use of an NFT that links the access path for a group of control commands with owner and/or holder data and with identification data for the motor vehicle.

Disclosed embodiments include airflow systems, vehicles, and controllers of airflow units. An illustrative airflow system of a vehicle includes an airflow inlet duct, an airflow intake duct, an air intake door, and an airflow unit. The airflow inlet duct is adapted to draw ambient air. The airflow intake duct is adapted to receive airflow from the airflow inlet duct. The air intake door is positioned therebetween. The airflow unit includes a controller configured to close the air intake door and seal off the air intake duct from the airflow inlet duct in response to receipt of at least one signal indicating at least one condition chosen from 1) a presence of water in the airflow inlet duct, 2) a hood of the vehicle being in an open condition, 3) a presence of rain received from a precipitation sensor, and 4) activation of a predetermined speed setting of a windshield wiper.

A control method for a vehicle includes determining whether an internal combustion engine is overheated based on driving information of the vehicle and cooling information of a passenger compartment while the vehicle is driving and an HVAC system is operating in a cooling mode, and controlling an alternator or an actuator of a switching door to reduce a cooling capacity provided by the HVAC system when it is determined that the internal combustion engine is overheated.

An embodiment provides a vehicle heating device comprising a heating module which is arranged toward passengers on a flow channel of air, connected to an air conditioning unit, to emit heat, wherein the heating module comprises a heating unit and an overheat protection means for preventing the heating unit from overheating above a predetermined temperature, and the heating unit heats the interior space of a vehicle through at least one of heat convection generated by heating the air and heat radiation obtained by radiating heat directly toward the passengers.

A vent assembly of a vehicle includes a vent having a vent opening through which an airflow is directed, and a primary duct operably connected to the vent to convey the airflow toward the vent opening. A pressure relief valve is located along the primary duct. The pressure relief valve is configured to open when a pressure of the airflow in the primary duct exceeds a threshold, to divert a portion of the airflow through the pressure relief valve.

A method controls the discharge of temperature-conditioned air from a plurality of zone outlets of an automotive HVAC system via an open architecture multi-zone HVAC unit having a single blower fan, an evaporator downstream of the blower and a heater downstream of the evaporator, wherein each zone in the module includes a temperature mix door for proportioning hot and cold air, which is controlled by a separate Discharge Temperature Maintenance control (DTM control), and an output valve for controlling a zonal output flow rate. The output valve of each zone outlet is placed in an output valve position associated with a target resistance; and the single blower fan is operated at a minimum voltage required for generating a total requested blower output flowrate.

A method for operating a device for the thermal conditioning of a motor vehicle interior, including: a refrigerant circuit including a compressor and a heat exchanger able to form an evaporator, the heat exchanger being able to exchange heat with a flow of air intended to be conditioned, a bypass means able to divert from the heat exchanger at least part of said air flow and which can be controlled in terms of position between the closed position in which no flow is diverted from the heat exchanger and a multitude of open positions in which part of the flow is diverted from the heat exchanger according to the position of opening, a mixing zone for mixing the flow that has passed through the evaporator and the flow of air diverted by the bypass means.