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

There is disclosed a vehicle air conditioner which is capable of enlarging an effective range of a dehumidifying and heating mode to environmental conditions and smoothly dehumidifying and heating a vehicle interior. A vehicle air conditioner 1 executes a dehumidifying and heating mode in which a controller lets a refrigerant discharged from a compressor 2 radiate heat in a radiator 4, and decompresses the refrigerant by which heat has been radiated and then lets the refrigerant absorb heat in a heat absorber 9 and an outdoor heat exchanger 7, the controller decreases an outdoor blower voltage FANVout of an outdoor blower 15 and decreases an air volume into the outdoor blower 15 in a case where a temperature Te of the heat absorber 9 is high even when the controller adjusts a valve position of an outdoor expansion valve 6 into a lower limit of controlling in a situation in which a temperature TCI of the radiator 4 is satisfactory.

A vapor compression cooling system includes a centrifugal compressor(s) for compressing a primary fluid in a cycle including at least two compressions, and a control module for controlling the centrifugal compressor dependent upon at least a condition of a secondary fluid. The module controls a power of the centrifugal compressor by adjusting a speed of the motor driving the compressor and/or an opening of guide vanes associated with at least one impeller. The module may also control a pressure drop of a primary fluid moving through at least one expansion device. The at least two compressions may be made in parallel or in series. A related method includes compressing a primary fluid in a first and a second compression cycle and adjusting a parameter of the compressor dependent upon a calculated desired power of the compressor.

A method and an apparatus for controlling a compressor are provided. The method includes measuring a vehicle speed, an engine speed, a position value of an accelerator pedal, and an external air temperature and comparing the vehicle speed with a predetermined speed. A basic operation rate of the compressor is then determined based on the engine speed and the position value of the accelerator pedal when the vehicle speed is equal to or less than the predetermined speed. A final operation rate of the compressor is determined based on the external air temperature and the determined basic operation rate and the compressor is operated based on the determined final operation rate.

An air cleaning system for a vehicle includes: an air purification button generating an operation signal for purifying air in an interior of the vehicle; an inside air purification unit blocking air outside of the vehicle from being introduced into the interior of the vehicle and filtering and circulating air inside of the vehicle, when the air purification button is operated; a fog detection unit detecting a humidity of a window of the vehicle by detecting moisture on the window; and a controller controlling an operation of the inside air purification unit when the air purification button is operated and determining whether a defogging unit of the vehicle for removing the moisture on the window is to be operated based on a signal from the fog detection unit.

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

A temperature control system that automatically operates the air-conditioning system of an unattended motor vehicle upon detecting the presence of persons or animals in the vehicle when temperatures sensed therein exceed a predetermined threshold.

A refrigeration system for a refrigerated cargo container includes two or more refrigeration circuits, each circuit configured to cool a compartment of the refrigerated cargo container. Each circuit includes a compressor (38) to compress a gaseous flow of refrigerant, a gas cooler (40) in fluid communication with the compressor to cool the compressed flow of refrigerant, and an evaporator (46) located at the compartment and in fluid communication with the gas cooler and the compressor. An electrical generator (34) is operably connected to the compressor of each circuit to drive the compressors and a control system operably connected to the electrical generator and the two or more circuits. The control system is configured to calculate a maximum electrical power generated by the generator, calculate a target electrical load of the components of each circuit, and distribute the available electrical power from the generator to meet the target electrical load of each circuit.

A method for operating a refrigeration system for a mobile unit includes steps of: 1) providing a refrigeration unit having a compressor, an evaporator, and at least one fan operable to move air towards the evaporator, a generator dedicated to the refrigeration unit, and a battery; 2) determining at least one environmental parameter in one or both of the mobile unit and the refrigeration unit; and 3) selectively operating the refrigeration unit in one of a plurality of modes based on the environmental parameter. The plurality of modes includes a first mode wherein at least the fan is powered by the battery, and a second mode wherein the compressor and the fan are powered by the generator.

The present invention suppresses electromagnetic noise generated from a substrate on which a microcomputer and the like are mounted. An electric compressor control system has regions divided by a plurality of ground patterns formed on a substrate. On the substrate, a vehicle information obtaining line is formed so as to traverse the regions divided by the plurality of ground patterns, and the vehicle information obtaining line is connected to a microcomputer provided on the substrate. On the vehicle information obtaining line, a coil is provided at a location that traverses the region and the region divided by the different ground patterns. The coil reduces noise generated from the vehicle information obtaining line.