A method for controlling a vehicle air-conditioning system and a vehicle air-conditioning system, the method includes acquiring an actual degree of superheat, a preset degree of superheat and a degree of opening of an electronic expansion valve; determining, according to the actual degree of superheat, the preset degree of superheat and the degree of opening of the electronic expansion valve and whether the electronic expansion valve is in a fault state; and outputting a control signal to an executive control mechanism to adjust a parameter of a device in a vehicle air-conditioning system, which influences the variation of the actual degree of superheat, so as to adjust the degree of superheat of the vehicle air-conditioning system.

Methods, systems, and apparatus for managing climate control. The control system includes one or more sensors that are configured to measure sunload energy. The control system includes a heating, ventilation and air conditioning (HVAC) unit that is configured to output air with an airflow rate into the cabin of the vehicle. The electronic control unit is configured to obtain the amount of sunload energy and obtain a blower map based on the amount of sunload energy. The electronic control unit is configured to determine the airflow rate based on the obtained blower map and an expected temperature. The electronic control unit is configured to control the airflow rate to adjust an air temperature within the cabin of the vehicle to reach the expected temperature therefore increasing the fuel efficiency.

A vehicle thermal management system including an electric powertrain, a single thermal loop, and a controller is provided. The electric powertrain includes a high voltage battery. The single thermal loop is for managing thermal conditions of the high voltage battery and a vehicle cabin and may include a climate control system, a blower, and a front evaporator in fluid communication with the vehicle cabin. The controller is programmed to, responsive to detection of a climate control system off request, output a command to direct the blower to push air through a heater core to the vehicle cabin at a predetermined temperature such that a temperature within the vehicle cabin is maintained at a predetermined temperature and refrigerant continues to flow through the front evaporator. The system may include a vehicle cabin temperature sensor and an ambient temperature sensor, each in electrical communication with the controller.

A system including mode, engine, and battery modules, where the mode module determines whether to operate in an engine mode or a battery mode based on parameters. The engine module, while operating in the engine mode, runs a compressor at a first speed based on a temperature within a temperature controlled container of a vehicle and permits passage of refrigerant through eutectic plates independent of the temperature. A battery, while in the engine mode, is charged based on power received from an electrical source. The battery module, while operating in the battery mode and based on the temperature, runs the compressor at a second speed and prevents passage of the refrigerant through the eutectic plates. While in the battery mode, the battery is not being charged based on power from a shore power source and the electrical source from which power is received during the engine mode.

A vehicle heating, ventilating, and air conditioning (HVAC) system can be configured to reduce and/or prevent condensation build up on one or more elements of the system. Subsequent to a power state of the vehicle being switched from an active state to an inactive state, a fresh mode air source can be selected as an intake for a blower. It can be determined whether an ambient temperature is greater than or equal to a predetermined temperature. It can then be determined whether the compressor was in operation prior to the vehicle having been switched from the active state to the inactive state. It can be determined whether a temperature of an evaporator of the HVAC system is rising. If it is determined that the ambient temperature is greater than or equal to the predetermined temperature value, that the compressor was in operation prior to the vehicle having been switched from the active state tot eh inactive state, and that the temperature of the evaporator is rising, a blower can be activated to blow air from the fresh mode air source across the evaporator.

A vehicle air-conditioning device may achieve comfortable heating of a vehicle interior by starting a compressor, an indoor blower and heat generating means at appropriate timing. The vehicle air-conditioning device includes a compressor which compresses a refrigerant, a radiator disposed in an air flow passage to let the refrigerant radiate heat, a heat absorber which lets the refrigerant absorb heat, and an indoor blower which blows the air through the air flow passage. The vehicle interior is heated by heat radiated from the radiator. The vehicle air-conditioning device includes a heating medium-air heat exchanger of a heating medium circulating circuit disposed in the air flow passage to heat air supplied to the vehicle interior. On a basis of an outdoor air temperature, the timing to start the compressor, the indoor blower and the heating medium circulating circuit is controlled.

A method for controlling a superheat degree of a vehicle air-conditioning system, and a vehicle air-conditioning system are provided. The method comprises: acquiring an actual superheat degree in real time, a preset superheat degree and a feed-forward information which influences a change of the actual superheat degree; and adjusting an opening degree of an electronic expansion valve in real time according to the actual superheat degree, the preset superheat degree and the feed-forward information that are acquired, so as to control the superheat degree of the vehicle air-conditioning system.

A vehicle air-conditioning device may achieve comfortable heating of a vehicle interior by starting a compressor, an indoor blower and heat generating means at appropriate timing. The vehicle air-conditioning device includes a compressor which compresses a refrigerant, a radiator disposed in an air flow passage to let the refrigerant radiate heat, a heat absorber which lets the refrigerant absorb heat, and an indoor blower which blows the air through the air flow passage. The vehicle interior is heated by heat radiated from the radiator. The vehicle air-conditioning device includes a heating medium-air heat exchanger of a heating medium circulating circuit disposed in the air flow passage to heat air supplied to the vehicle interior. On a basis of an outdoor air temperature, the timing to start the compressor, the indoor blower and the heating medium circulating circuit is controlled.

An air conditioning system for a vehicle, having an evaporator configured for a heat exchange between a coolant and air, a fan configured to generate an air flow passing through the evaporator and intended to be fed into a vehicle passenger compartment, at least one pressure sensor configured to measure the pressure of the coolant, and a control unit to adjust the rotation speed of the fan, configured to automatically decrease the rotation speed of the fan when the detected pressure of the coolant rises above a pressure threshold, so as to reduce the air flow on the evaporator and thus reduce the pressure of the coolant is provided.

A system including mode, engine, and battery modules, where the mode module determines whether to operate in an engine mode or a battery mode based on parameters. The engine module, while operating in the engine mode, runs a compressor at a first speed based on a temperature within a temperature controlled container of a vehicle and permits passage of refrigerant through eutectic plates independent of the temperature. A battery, while in the engine mode, is charged based on power received from an electrical source. The battery module, while operating in the battery mode and based on the temperature, runs the compressor at a second speed and prevents passage of the refrigerant through the eutectic plates. While in the battery mode, the battery is not being charged based on power from a shore power source and the electrical source from which power is received during the engine mode.