When an A/C switch is ON and a predetermined dehumidification condition is met, an ECU determines whether or not HV travel is selected. When the HV travel is selected, the ECU controls an air conditioning facility so that a heat pump cycle performs a cooling operation (dehumidification) and hot-water heating is used for the heating capability. When the EV travel is selected, the ECU controls the air conditioning facility so that the heat pump cycle performs dehumidification heating.

An air conditioning system of a vehicle having an internal combustion engine includes a condenser configured to receive refrigerant output by an electric compressor and transfer heat from the refrigerant within the condenser to air passing the condenser. A first evaporator is configured to receive refrigerant from the condenser when a first control valve is open and transfer heat from air passing the first evaporator to the refrigerant within the first evaporator. A first blower is configured to blow air across the first evaporator to a first section of a cabin of the vehicle. A second evaporator is configured to receive refrigerant from the condenser when a second control valve is open and transfer heat from air passing the second evaporator to the refrigerant within the second evaporator. A second blower is configured to blow air across the second evaporator to a second section of the cabin of the vehicle.

Disclosed are climate systems for vehicles and methods for controlling the climate systems. In some implementations, a climate system includes: (1) a temperature sensor configured to measure a temperature within the compartment of the vehicle; (2) a first compressor powered by an engine of the vehicle to compress a refrigerant; (3) a second compressor driven by an electric motor to compress the refrigerant; and (4) a controller electrically coupled to the first compressor and the second compressor. The controller configured to: (1) calculate a thermal load of the compartment based on a difference between a desired temperature and a measured temperature; and, (2) based on the calculated load, selectively activate: (i) the engine, (ii) the first compressor, and/or (iii) the second compressor.

During control of an air-conditioning for a vehicle, when a torque to the engine is outputted that satisfies a total value of drive torques of the vehicle and an air-conditioning compressor, a minimum discharge capacity is set when fuel to the engine is cut. An assessment is made as to whether or not the discharge capacity needs to be changed from the minimum discharge capacity in accordance with the state inside the cabin. The discharge capacity is changed from the minimum discharge capacity to an upper limit capacity that is allowed during normal operation upon accessing that the discharge capacity needs to be changed from the minimum discharge capacity. After a predetermined time elapses following the changing of the discharge capacity, the discharge capacity is changed from the upper limit capacity to a discharge capacity that corresponds to the state inside the cabin.

An evaluation device includes a set temperature evaluation portion, an ecological driving evaluation portion, and a notification portion. The set temperature evaluation portion determines a set temperature evaluation value based on a set temperature that is a target temperature. The ecological driving evaluation portion is configured to determine an ecological driving evaluation value based on at least the set temperature evaluation value. The notification portion is configured to notify the occupant of the ecological driving evaluation value. The level of power saving rises with change of the set temperature evaluation value or the ecological driving evaluation value. When the set temperature is changed, and the change of the set temperature causes increase of the level of power saving without decrease in power consumption of the vehicular air conditioner, the set temperature evaluation portion changes the set temperature evaluation value in the one of positive and negative directions.

A transport refrigeration unit and a method for controlling the transport refrigeration unit, wherein the transport refrigeration unit has a controller device for operating a compressor of the transport refrigeration unit with a continuously-variable speed, which allows the compressor to run continuously but with a smooth gradient range of speed variations. The controller device allows the transport refrigeration unit to have a start-stop operation stage, continuous run operation stage, and/or a cycle-sentry operation stage.

Methods and systems for controlling a heating, ventilation, and air-conditioning (HVAC) intake. An air-conditioning control device receives the detected ambient air from an ambient air sensor, and the detected air temperature at a front of a condenser. The two temperatures are compared to determine whether to change the HVAC intake. In response to determining the air temperature at the front of the condenser is higher than the ambient air, the HVAC intake is placed into a recirculate position to allow air from the vehicle compartment to enter the HVAC intake.

A clutch current control circuit may include as a circuit for controlling a current of a clutch connected to a compressor, a strain gauge, wherein a resistance value of the strain gauge is varied according to the movement amount of an Electric Control Valve (ECV) shaft; a switching element of performing a switching operation by comparing a gate-source voltage determined according to a change in the resistance value of the strain gauge and the threshold voltage, and allowing a flow of a first clutch current to generate by a first switching operation state; and a resistor connected in parallel with the switching element, and allowing a flow of a second clutch current to generate by a second switching operation state of the switching element.

An air conditioning system for an electric transport vehicle supplied by an electrical supply network includes at least one actuator for the production of heat or cold, and a regulator configured in order to generate at least one operating command applied to the at least one actuator as a function of values for parameters representing the climatic conditions, the actuator delivering an average power over a predetermined time period. The regulator are configured in order to generate at least one operating command applied to at least one actuator as a function moreover of the value for a parameter relating to at least one electric transport vehicle supplied by the electrical supply network, the value for the parameter indicating that electrical energy is consumed by the at least one electric transport vehicle or that electrical energy is produced by the at least one electric vehicle.

Methods and systems for coordinating operation of two or more transport refrigeration systems (TRSs) are disclosed. In one embodiment, the method includes a controller determining whether the first transport unit is stationary. The method also includes the controller identifying whether the first transport unit is in close proximity of a second transport unit when the controller determines that the transport unit is stationary. Also, the method includes the controller determining an executive control strategy for controlling the first TRS in coordination with a second TRS when the controller identifies that the first transport unit is in close proximity of the second transport unit. Further, the method includes the controller operating the first TRS based on the executive control strategy.