A vehicle air-conditioning system, including: a DC-to-AC inverter, for supplying alternating current to the alternator of the vehicle from a battery, for rotating the wheel of the alternator; mechanical connection between the alternator wheel and a wheel of the air-conditioner of the vehicle; and an operating element, for user-operating the DC-to-AC inverter and the clutch of the mechanical connection, thereby operating the air-conditioner without power of the engine wheel.

Methods and systems are provided for operating a climate control system. In one example, a method for operating a vehicle climate control system includes modeling a temperature in a cabin heating circuit coupled to a heat pump. The method also includes operating the heat pump to deliver thermal energy to a cabin heat exchanger based on the modeled temperature.

Methods and systems are provided for operating a climate control system. In one example, a method for operating a vehicle climate control system includes modeling a pressure in a heat pump downstream of an exterior heat exchanger an upstream of an expansion valve. The method also includes operating the expansion valve to cool a vehicle cabin using the modeled pressure in conjunction with a temperature from a sensor positioned upstream of the expansion valve and downstream of the exterior heat exchanger.

An electric vehicle includes an electric motor, an electrical storage device, an air-conditioning apparatus and a controller. A coolant circuit of the air-conditioning apparatus has a compressor, an outdoor heat exchanger, an expansion valve for cooling, and an evaporator. The evaporator has a heat storage member. In a case in which regenerative braking by the electric motor is performed when the state of charge of the electrical storage device is the predetermined value or more, the controller controls the air-conditioning apparatus such that a temperature of the evaporator is decreased so as to be lower than a temperature of the evaporator when a state of charge of the electrical storage device is less than a predetermined value.

Technologies described herein pertain to delivering power to primary and accessory electrical components associated with a vehicle that is at least partially electrically powered, as well as to a power source of the vehicle itself. To operate one or more of accessory electrical components and deliver power to a vehicle battery, via a power distribution unit, the embodiments facilitate understanding of dynamic power available to the accessory electrical components as well as the vehicle battery, and distributing of the power in a prioritized manner to optimize the system for a most efficient power delivery process, with regards to power needs and power availability. Managing power supplied to a climate control unit that is used in a transport climate control system providing climate control to at least one of an internal space of a vehicle, may be performed by a controller that is electrically connected to at least the climate control unit.

A roof-type air conditioner for vehicles may include an evaporator to discharge cold air to the internal of a vehicle, and a conveying unit to move the evaporator in a longitudinal direction of the vehicle on a ceiling of the vehicle such that the evaporator is disposed to the ceiling of the internal of the vehicle and positioned to a region required for cooling.

Methods, systems, and apparatus for a heating, ventilation and air conditioning (HVAC) system that limits the speed of the compressor to allow for the adoption or use of an internal heat exchanger. The HVAC system includes a compressor configured to drive refrigerant flow and an inverter configured to control a speed of the compressor. The HVAC system includes a first sensor configured to measure a temperature of the inverter and an electronic control unit. The electronic control unit is configured to obtain, from the first sensor, the temperature of the inverter. The electronic control unit is configured to determine a range of speeds for the compressor based on the obtained temperature of the inverter. The electronic control unit is configured to operate the compressor within the determined range of speeds.

A system for controlling a compressor may include an engine controller controlling a fuel injection amount corresponding to an engine load and an opening amount of a throttle by reflecting a required torque required for an air conditioner, an operation information detector for detecting operation information according to driving state of the vehicle, a compressor generating pressure through a piston operation of a cylinder utilizing the power of the engine during operation of the air conditioner, and a controller determining an engine negative pressure of an intake manifold stored in the brake booster at a value, and when the negative pressure of intake manifold is below a first threshold value when the brake is operated, the engine enters a negative pressure recovery mode for predicting an insignificant negative pressure drop condition that falls below a second threshold value which is the A/C cut control condition and reduces the A/C duty.

A transportation refrigeration system including: a transportation refrigeration unit including a compressor, one or more valves, and a controller; an energy storage device configured to provide electrical power to the transportation refrigeration unit; and an intelligent charging connector in electrical communication with the energy storage device and/or the transportation refrigeration unit, the intelligent charging connector being connectable to a power grid and being configured to selectively control a provision of electrical power to the transportation refrigeration unit from the energy storage device and/or the power grid by transitioning the provision of electrical power to the transportation refrigeration unit from being supplied by the energy storage device or the power grid in response to the intelligent charging connector being connected to the power grid or in conjunction with the intelligent charging connector being disconnected from the power grid, respectively.

A method for controlling a climate control system is disclosed. In one example, the climate control system includes adjusting an air mixing valve state and adjusting a displacement of a compressor in response to an energy conversion device load. The method may provide improved climate control in a vehicle cabin during high energy conversion device load conditions.