Vehicle control apparatus and vehicle control method are described. The vehicle control apparatus may include a compressor and a controller. The controller may determine a thermal load level at one or more of: a first time point at which an engine is switched to an ON state from an OFF state, a second time point at which a first discharge amount of the battery exceeds a first reference value while the engine is in the OFF state, or a third time point at which a second discharge amount of the battery exceeds a second reference value smaller than the first reference value and a discharge rate associated with the battery exceeds a third reference value while the engine is in the OFF state. The controller may control the compressor using a control value corresponding to the thermal load level.

A vehicle accessory power management assembly has a power device, an accessory device, a power transmitting device and a controller. The power transmitting device has an input part coupled to the power device, an output part coupled to the accessory device, and a speed ratio switching part switchable between a first operating state in which the input part and the output part rotate at a first speed ratio relative to one another and a second operating state in which the input part and the output part rotate at a second speed ratio relative to one another. The controller is configured to switch the speed ratio switching part between the first operating state and the second operating state in response determining whether the speed of output of the power device is above a pre-determined value or below a pre-determined value.

A vehicle air-conditioning apparatus is provided which is capable of efficiently eliminating or suppressing fogging of a window while comfortably heating a vehicle interior. A controller changes and executes a heating mode to let a refrigerant discharged from a compressor 2 radiate heat in a radiator 4, and a dehumidifying and heating mode to let the refrigerant discharged from the compressor radiate heat in the radiator and let the refrigerant absorb heat in a heat absorber 9. When the temperature of air blown out to the vehicle interior is not capable of reaching a target outlet temperature in the dehumidifying and heating mode, the controller actuates a window heater 35 heating a front window 30 and shifts to the heating mode.

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 thermal system for a vehicle includes a compressor configured to pressurize refrigerant that selectively flows through a chiller for battery coolant and an evaporator for cabin cooling. The system further includes a controller programmed to, responsive to cabin cooling demand becoming zero, change from adjusting compressor speed responsive to changes in an evaporator temperature to adjusting compressor speed responsive to changes in a chiller refrigerant pressure.

A capacity control valve includes a valve housing formed with a discharge port, a suction port, and first and second control ports, a rod movably arranged in the valve housing and driven by a solenoid, a CS valve configured to control a fluid flow between the first control port and the suction port in accordance with a movement of the rod, and a DC valve configured to control a fluid flow between the second control port and the discharge port in accordance with the movement of the rod. In a non-energization state, the CS valve is closed and the DC valve is closed. As the energization of the solenoid becomes larger, the CS valve transitions from a closed state to an open state and the DC valve transitions from a closed state to an open state.

A transport refrigeration unit controllably cools a container, and includes a compressor (58) constructed and arranged compress a refrigerant and a compressor motor (60) configured to drive the compressor (58). A battery (52) of the unit is configured to at least in-part provide electric power to the compressor motor (60). A power management system of the unit includes a computer-based controller configured to generate diagnostic data from data signals received from a battery temperature sensor (122), a battery current sensor (124), and a compressor motor current sensor (126).

A method of controlling an air conditioning system for a vehicle is provided. The method includes setting a scheduled heating and performing charging of the battery and the scheduled heating. A desire target temperature (DTT) of a user is then received and a discharge temperature of air supplied into the vehicle is compared with the DTT to adjust revolutions per minute (RPM) of a compressor. When the RPM of the compressor is adjusted the RPM of the compressor is determined based on whether the discharge temperature is the same as the DTT, and whether to operate the electric heater is determined.

A refrigerated compartment and refrigerated vehicle with dynamic control of a temperature field, including a compartment body. A refrigeration mechanism is fixed on a compartment body side wall and injects cold air into the compartment body. Steering mechanisms are fixed on the top wall of the compartment body, and each is connected with a fan. The fan accelerates the flowing cold air and the steering mechanism drives the fan to rotate and the change the cold air flow direction. Temperature sensors are equipped with the compartment body side walls and can detect the temperature. The temperature sensors are connected to a control mechanism arranged outside the compartment body and transmit detected information thereto. The control mechanism is connected to the steering mechanism, fan, and refrigeration mechanism through the speed regulator. The control mechanism controls the refrigeration mechanism working power and the operation of the steering mechanism and the fan.

A vehicle air conditioning device which is capable of inhibiting liquid return to a compressor and generation of noise due to bumping in an accumulator. There are executed a heating mode to close a solenoid valve 17, open a solenoid valve 21, let a refrigerant from a compressor 2 radiate heat in a radiator 4, decompress the refrigerant through an outdoor expansion valve 6, let the refrigerant absorb heat in an outdoor heat exchanger 7, and send the refrigerant to an accumulator 12, and a dehumidifying and cooling mode to open the solenoid valve 17, close the solenoid valve 21, decompress the refrigerant through an indoor expansion valve 8, let the refrigerant absorb heat in a heat absorber, and send the refrigerant to the accumulator. When shifting from the heating mode to the dehumidifying and cooling mode, the solenoid valve 21 is opened for a predetermined period of time.