Abstract: A method for energy management of air-conditioning units in motor vehicles in which each of the air-conditioning units has a plurality of air-conditioning compressors prevents very heavy loading of an engine of a motor vehicle and prevents the engine from almost stalling when the air-conditioning compressors start up, as currently occurs during starting of the engine of the motor vehicle, after idling of the engine of the motor vehicle, and after an acceleration process in which the engine was in the full load mode. Each of the air-conditioning compressors is allocated a different priority, with the highest priority, for example, assigned to the air-conditioning compressor for a front vehicle region which is intended, inter alia, to prevent the front windscreen from misting up by removing moisture from the air. A lower priority can be assigned to the air-conditioning compressor for a rear vehicle region.

Abstract: The present invention relates to a refrigerating cycle of a dual-type air conditioning system for vehicles having a front and rear evaporators provided at the front and rear sides of the car, in which the installation space for a refrigerant discharging pipe installed in the refrigerant discharging sides respectively of the front and rear evaporators can be minimized, and also the arrangement of the refrigerant discharging pipe is improved to prevent the refrigerant from back-flowing, thereby enabling a smooth operation of the compressor and also improving the performance of the air conditioning system.

Abstract: An air conditioning system for use in an over-the-road or off road vehicle that provides operation during both engine on and engine off conditions. The system includes a variable speed compressor, a motor, and a controller. The controller receives electric power from the vehicle's electric power generation system when the engine is on to enable operation of the compressor during an engine on condition. When the engine is off, the controller receives electric power from a battery to enable operation of the compressor during the engine off condition.

Abstract: An arrangement of components for exchanging heat for motor vehicles with multiple cooling circuits comprising at least one pump, at least one control device and at least one heat exchanger. The arrangement is characterized in that a first cooling circuit is selectively connected with at least one or more additional cooling circuits to transfer thermal energy, and a selective fluid connection is provided between the additional cooling circuits by means of at least one control element.

Abstract: A vehicle air conditioning system equipped with a refrigerant circuit comprising an electrically operated compressor is intended to enable simplification of data communication between the inside and outside of a passenger compartment and to enable accurate air conditioning control.

Abstract: An air conditioning system for use in an over-the-road or off road vehicle provides operation during both engine on and engine off conditions. The system includes a variable speed compressor, a motor, and a controller. The controller receives electric power from the vehicle's electric power generation system when the engine is on to enable operation of the compressor during an engine on condition. When the engine is off, the controller receives electric power from a battery to enable operation of the compressor during the engine off condition.

Abstract: The present invention concerns a method for pre-cooling the passenger compartment of an automotive vehicle. The vehicle includes at least one electrically actuatable window and a HVAC system having at least a controller, a blower, a passenger compartment temperature sensor, and a HVAC ducting leading to the passenger compartment. The controller and the blower are connected to a vehicle battery. The method includes determining the passenger compartment temperature and comparing the temperature to a first predetermined value; cycling an blower inlet to an outside air intake position and operating the blower to provide pressurized air to the passenger compartment if the passenger compartment temperature is greater than the first predetermined value; opening the vehicle windows; comparing the passenger compartment temperature to a second predetermined value; and stopping operation of the blower when the passenger compartment temperature drops below the second predetermined value.

Abstract: A rooftop air-conditioner operating according to the cold vapor-compression principle using an internal coolant for a vehicle. The air-conditioner including a sequence made up of a high-pressure side heat exchanging device with an associated fan device, followed by an expansion device and an evaporation device that use the internal coolant. The vehicle including an internal channel arrangement to convey air to be conditioned, which exchanges heat with the evaporation device. The air-conditioner having a modular construction of a high-pressure side heat exchanging device with associated fan device in its own housing. The connections for coupling identical high-pressure heat exchanging device modules can be provided, prepared or designed, and the modules are designed for grid-like coupling of modules of identical output and/or modules of stepped output.

Abstract: A vehicle climate control system with a seat position sensor and an occupant weight sensor. The seat position sensor and the occupant weight sensor communicate a seat position and a weight of a vehicle occupant to a controller. By determining the seat position, an occupant's relative size can be estimated. Thus, when the controller receives the occupant weight data and the seat position data, a fitness factor is determined. The fitness factor is a metric that combines the occupant weight and size into a single measurement to judge the occupant's fitness level. The fitness factor, either directly or indirectly is used to determine a temperature at outlet (TAO), which is then used to adjust an HVAC system so that comfortable cabin air conditions can be provided to occupants who have different fitness factors and thus different fitness levels without the occupants making manual changes to the HVAC system.

Abstract: An air-blowing unit includes a blower unit including an irreversible fan, a first blower-side duct connected to an inlet port of the blower unit, a second blower-side duct connected to an air discharge port of the blower unit, a first air opening-side duct including a first air opening, a second air opening-side duct including a second air opening, and an air passage switching device disposed between the blower-side ducts and the air opening-side ducts. The air passage switching device switches air passage connection between the blower-side ducts and the air opening-side ducts.

Abstract: A system with an internal combustion engine which has a heat transfer circuit, a fuel cell and a climate control unit which is accommodated in the heat transfer circuit of the internal combustion engine. The system has a heat transfer arrangement for transferring the exhaust heat of the fuel cell to the heat transfer circuit and a bypass for bridging a segment of the heat transfer circuit which runs through the internal combustion engine so that, in the bypassed operating state, an isolated circuit is formed. In stationary operation, this enables an optimized operating mode since the internal combustion engine is no longer heated and the exhaust heat of the fuel cell is fully available for heating purposes.

Abstract: A roof module (10) for a motor vehicle, with an integrated climate control system (12, 14, 16, 18). Furthermore, the roof module (10) includes a fuel cell system (32, 34, 38). The roof module (10) is preferably a pre-mounted complete motor vehicle roof with bordering modules, preferably with extra integrated functions.

Abstract: A multiple zoned air conditioning system for providing air conditioning to the interior of an automotive vehicle. The air conditioning system includes a main air conditioning module with a first heat exchanger for cooling and with a second heat exchanger for heating, as well as a multiple zone module. The main air conditioning module creates, in cooperation with the multiple zone module, at least one first air flow conditioned for temperature. The multiple zone module is interchangeably disposed in the main air conditioning module, with the second heat exchanger engaging the multiple zone module so as to allow air flow therethrough, when the multiple zone module is disposed on the main air conditioning module.

Abstract: An air conditioner for a vehicle includes an air conditioning unit for generating a conditioned air, an air-blowing outlet portion for blowing the conditioned air toward a target portion of a passenger in a passenger compartment of the vehicle, and a control unit adapted to conduct a cool-down control. The target portion includes a face area, a seat-contact portion and a hand area of the passenger, the seat-contact portion contacting a seat of the vehicle. The cool-down control includes a first blowing operation for blowing the conditioned air from the air-blowing outlet portion toward the face area, a second blowing operation for blowing the conditioned air from the air-blowing outlet portion toward the seat-contact portion and a third blowing operation for blowing the conditioned air from the air-blowing outlet portion toward the hand area. The first blowing operation, the second blowing operation and the third blowing operation successively begun.

Abstract: In an air conditioner for a vehicle, a blower of a blower unit includes a double-axial motor having a rotation axis positioned approximately in a vehicle top-bottom direction, a pair of centrifugal fans located at two sides of the double-axial motor in an axial direction, and a pair of scroll casings in which the centrifugal fans are accommodated, respectively. The two air outlet portions are arranged in the vehicle top-bottom direction, and are adjacent to be joined to an air inlet portion of the air conditioning unit, substantially as a single air outlet. Furthermore, the two air outlet portions are located approximately at the same height position as that of the air passing portion of the cooling heat exchanger, and have a height dimension (H2) at its downstream end side that is approximately equal to a height dimension (H1) of the air passing portion of the cooling heat exchanger.

Abstract: A vehicle air conditioning system is disclosed that includes a compressor, a condenser, a front evaporator and a rear evaporator. The condenser is operably coupled to the compressor. The front evaporator is operably coupled to the condenser and the rear evaporator is operably coupled to the condenser. A high pressure tube operably couples the condenser to the rear evaporator and a low pressure tube operably couples the rear evaporator to the compressor. At least a portion of the high pressure tube and at least a portion of the low pressure tube are formed as a dual conduit section having side-by-side relationship for heat exchange therebetween.

Abstract: A refrigeration unit includes an external housing located primarily outside of a vehicle compartment of a vehicle, and an internal housing located primarily inside of the vehicle compartment. A vehicle roof of the compartment has an external layer and an internal layer spaced apart from the external layer with insulation located there between. The vehicle roof includes an opening that receives the refrigeration unit. A gasket provides a seal between the refrigeration unit and the vehicle roof. The gasket covers the exterior layer and the interior layer. The gasket is formed of multiple layers of material which are secured to one another.

Abstract: An air conditioning case houses an evaporator for an air conditioning system and a blower unit. A drainage hole for water that condenses on the evaporator is located between the evaporator and the blower unit. An extension wall shields the drainage hole from the air blown by the blower unit. A shielding wall shields a water channel located between the evaporator and the air conditioning case from the blower unit. A partition wall located within the water channel extends from the air conditioning case to the evaporator.

Abstract: In an air conditioning apparatus for a vehicle, a blower unit is arranged such that air is discharged in a substantially front and rear direction of the vehicle. An evaporator is opposed to an air discharge port of the blower unit and inclined at an angle equal to or greater than 45 degrees with respect to a horizontal plane. The heater core is arranged horizontally above the blower unit and an end of the heater core is adjacent to an upper end of the evaporator. Further, a slide door is provided downstream of the air discharge port to distribute the air toward the evaporator and the heater core. By this arrangement, dimensions of the air conditioning apparatus are reduced with respect to horizontal and vertical directions. Thus, this compact air conditioning apparatus can be installed in a small space such as in a center console or an interior side trim space.

Abstract: An air conditioning system for a vehicle includes a climate control system for selectively heating and cooling ambient air in a passenger compartment of the vehicle. One or more fans cooperate with the climate control system and are configured to draw air from the passenger compartment to expel air to the exterior of the vehicle. One or more devices are provided in proximity to the passenger compartment to detect a variety of conditions of the air in the passenger compartment. The one or more devices selectively signal a controller to activate and deactivate the one or more fans prior to an occupant entering the vehicle. The controller may activate the one or more fans to draw air from the passenger compartment based on detection of predetermined conditions in response to input from the one or more devices.

Abstract: When a switching signal to switch the mode to the defroster mode is generated and the target air volume is smaller than a predetermined air volume ?, the target air volume is automatically increased to the predetermined air volume ?. In doing so, an increase starting point of time of increasing the target air volume is determined according to the blowout mode immediately before a switch signal to switch the mode to the defroster mode is generated.

Abstract: A beverage cooler for use in a land vehicle. The beverage cooler includes a housing having an inlet for receiving air from a register in the land vehicle and having an outlet in fluid communication with the inlet for discharging air into the passenger compartment of the land vehicle carrying the register. A mounting bracket is connected to the housing for securing the housing to the register of a land vehicle. An insert is removably positioned within the housing. The insert includes a tubular sleeve for releasably holding a beverage container. The sleeve has a circular bottom wall and a cylindrical side wall that is affixed to, and extends upwardly from, the bottom wall. A peripheral collar extends outwardly from the top of the sleeve so as to engage the top of the housing. An absorbent pad is positioned the bottom of the tubular sleeve atop the bottom wall. A wicking strip contacts the absorbent pad and conveys, via capillary action, water away from the absorbent pad.

Abstract: An air conditioner for automotive vehicle use intended to prevent a defrosting operation in an instantaneous foot-defroster mode. The DEF mode in which air mainly from a DEF opening is blown toward the windshield is set by an exclusive front DEF switch. The F/D mode for blowing a substantially equal amount of air to the windshield and the feet of the occupants from the DEF opening and the FOOT opening, respectively, together with the other blow modes (FACE, B/L, FOOT), are sequentially switched for each operation of the blow mode switch in a predetermined sequence. In the case where the F/D mode is selected, the air condition control operation is not performed nor is the blow mode displayed in F/D mode before the lapse of a predetermined length of time (about 1 second). In the case where the blow mode other than F/D mode is desired, therefore, the unrequired control operation in F/D mode is not performed and the instantaneous change is not displayed even though the F/D mode is unavoidably passed-through.

Abstract: A local air conditioning system for a vehicle includes a local air conditioning unit for performing one of a cooling operation and a heating operation for a predetermined portion of a seat of the vehicle. In the local air conditioning system, information regarding a user is acquired, and a current scene is identified based on the acquired information. The local air conditioning unit is controlled to perform one of the cooling operation and the heating operation for the predetermined portion of the seat on condition that the current scene is identified as a getting-in-vehicle scene in which the user gets in the vehicle and sits on the seat. For example, the predetermined portion of the seat is a portion corresponding to a high body temperature portion of a user, such as a nape of a neck and backs of knees.

Abstract: An air conditioning system for construction and agricultural vehicles is disclosed. A case includes an air-mix chamber into which blown air flows after passing through a cooling heat exchanger. The blown air that has flowed into the air-mix chamber flows out through a front face opening and a rear face opening. The front face opening and the rear face opening are arranged in such a manner that a first angle between the inflow direction in which the blown air flows into the air-mix chamber and a first outflow direction in which the blown air flows out from the front face opening is not smaller than a second angle between the inflow direction and a second outflow direction in which the blown air flows out from the rear face opening.

Abstract: Systems and methods for a temperature control loop in a vehicular engine compartment to concurrently cool at least two devices with a single fluid supply source when each device requires the cooling supply fluid to have a distinct temperature. The supply fluid, having a first temperature, can be simultaneously routed through a primary heat exchanger and a mixing valve. The primary heat exchanger cools the first temperature fluid to produce a second temperature fluid. The mixing valve controllably receives at least some of the first temperature fluid and some of the second temperature fluid discharged from the primary heat exchanger and mixes the respective fluids to produce a third temperature fluid. The second temperature fluid not diverted to the mixing valve is used to cool a first device located downstream of the primary heat exchanger. The third temperature fluid is used to cool a second device located downstream of the mixing valve.

Abstract: The invention pertains to heat transfer compositions, particularly to automobile refrigerants comprising a hydrofluoroalkene, an iodocarbon, a lubricant and a metal stabilizer.

Abstract: A method and system for controlling a climate control system on a vehicle after entering a heat soak mode in which the outside air temperature associated with the vehicle is affected by absorption of non-ambient heat includes an ambient temperature sensor for sensing a current ambient temperature outside the vehicle. A controller coupled to the ambient temperature sensor compares the current ambient temperature to a stored ambient temperature representative of the outside air temperature prior to entering the heat soak mode. The controller controls the climate control system using the current ambient temperature if the current ambient temperature is less than the stored ambient temperature. If the current ambient temperature is greater than the stored ambient temperature, the controller determines a heat build up affecting the current ambient temperature and controls the climate control system using the current ambient temperature only upon elimination of the heat build up.

Abstract: A glove box assembly for a vehicle is provided and includes a storage bin, a dedicated climate controlled bin, and an air flow manifold. The air flow manifold is arranged to receive cooled air from a vehicle heating ventilation and air conditioning unit and direct the flow of cooled air into the climate controlled bin for cooling the climate controlled bin independent of the storage bin. The air flow manifold is further arranged to draw cooled air from the heating ventilation and air conditioning unit upstream of a blend door when air conditioning is operating so as to provide cooled air to the climate controlled bin independent of a vehicle cabin temperature setting.

Abstract: A glove box assembly for a vehicle is provided. The glove box assembly includes a storage bin and a dedicated climate controlled bin. The climate controlled bin is arranged to receive cooled air from a vehicle heating, ventilation and air conditioning (HVAC) unit for cooling the climate controlled bin independent of the storage bin. The glove box assembly further includes a cooled air inlet. The cooled air inlet is arranged to draw cooled air from the HVAC unit upstream of a blend door when air conditioning is operating so as to provide cooled air to the climate controlled bin independent of a vehicle cabin temperature setting.

Abstract: In a cooling system (10) for cooling heat-generating installations (44, 46, 48) in an aircraft, with a refrigerating installation (12), at least one refrigeration consumer (44, 46, 48) and a refrigeration transport system (14) connecting the refrigerating installation (12) and the refrigeration consumer (44,46, 48), it is provided that the refrigerating installation (12) comprises at least one refrigeration machine (18, 20) which covers the maximum refrigeration requirement of the at least one refrigeration consumer (44, 46, 48) and in that the at least one refrigeration consumer (44, 46, 48) is supplied with cold generated in the refrigerating installation (12) via a refrigerating agent circulating in the refrigeration transport system (14).

Abstract: A cooling system for a vehicle and method of operating it is disclosed. The cooling system may include a refrigerant to liquid heat exchanger, which may be located outside of a passenger cabin, and a chiller, which may be located inside the passenger cabin. A refrigerant circuit and a water circuit may both engage the refrigerant to liquid heat exchanger. The refrigerant to liquid heat exchanger may be an integrated heat exchanger and expansion device.

Abstract: The present invention provides a system for controlling the climate of a hybrid vehicle. The system includes a thermoelectric module, a heat exchanger, a pump, and a valve. The thermoelectric module includes thermoelectric elements powered by electric energy. The thermoelectric elements emit or absorb heat energy based on the polarity of the electrical energy provided. A tube containing coolant runs proximate the thermoelectric elements. To aid in the transfer of heat energy, a blower is provided to generate an air flow across the thermoelectric elements and the tube. The coolant is provided from the thermoelectric module to a heat exchanger that heats or cools the air flow provided to the cabin of the vehicle. The pump and valve are in fluid communication with the heat exchanger and thermoelectric module. The pump pressurizes the coolant flow through the tube and coolant lines. In a cooling mode, the valve is configured to selectively bypass the engine coolant system of the vehicle.

Abstract: An air conditioner for a vehicle is provided with an air conditioning unit for blowing conditioned air to a passenger compartment of the vehicle, multiple seat air conditioning units for respectively controlling temperatures of seats of the vehicle, and a control unit for controlling the air conditioning unit and the seat air conditioning units. The larger the difference between a target blowing-out temperature of the air conditioning unit and a compartment setting temperature of the passenger compartment, the larger the degree of influence of the target blowing-out temperature on a seat target blowing-out temperature in the calculation of the seat target blowing-out temperature, based on which the seat air conditioning unit is controlled.

Abstract: An aircraft is provided with an integrated galley refrigeration unit and vehicle cabin air conditioning packet. A control selectively determines whether the provision of cooled air into an air cooled galley takes precedent over the provision of cooled air into the passenger cabin. Valving is provided to selectively provide cold fluid to a recirculation air heat exchanger, which supplies supplemental cooled air for delivery into the passenger cabin. This refrigeration air heat exchanger is utilized when precedent is given to providing cooled air to the cabin. On the other hand, the valve is maintained in an off position when it is determined that the air cooled galleys should take precedent.

Abstract: A vehicle air conditioner includes an air conditioning case having an air introducing port from which air is introduced in an air introducing direction from a side of a cooling heat exchanger to a space under the cooling heat exchanger. Further, the air conditioning case includes a flow turning portion by which air introduced from the air introducing port is turned and flows through the cooling heat exchanger upwardly, and the cooling heat exchanger is slanted to have an upper end portion and a lower end portion approximately parallel to the air introducing direction. Furthermore, a plate member is arranged in the air conditioning case at a position under the lower end portion of the cooling heat exchanger, and the plate member has a plate surface which crosses with the air introducing direction to reduce a flow speed of air.

Abstract: A twin-type blower motor unit that drives fans provided on both sides in an axial direction by an electric motor is disposed on an upper portion of a main casing in the vertical direction. The blower motor unit is movably assembled in the vehicle widthwise direction with respect to the main casing.

Abstract: An apparatus and method for providing a partial recirculation mode of operation in an HVAC control system of a vehicle to place a fresh air passage, a recirculation passage, and an interior passage in fluid communication to reduce vehicle door closing energy by allowing external discharge of cabin air pressure from the interior passenger compartment through the fresh air passage during vehicle door closure. The partial recirculation mode bypasses distribution vent covers, distribution ductwork, heater and evaporator cores, and blowers in order to open a more direct air outlet path to atmosphere which can be activated as required in order to reduce vehicle door closing energy. The partial recirculation mode of operation is activated in response to predetermined vehicle conditions, such as, ignition switched off seat belt unbuckled, transmission switched to park, emergency brake applied, vehicle door opened, vehicle door unlocked, and/or vehicle seat sensor switched to unoccupied.

Abstract: A vehicle HVAC system includes a HVAC components such as a duct, vent, manually adjustable airflow control head, toggle or housing manufactured from a molded plastic material having an antimicrobial additive. The antimicrobial additive is preferably introduced as an additive during molding of the HVAC components that are typically injection or blow molded parts. Usage of a plastic having an antimicrobial additive continuously fights the growth of microbes such as most common bacteria, yeasts, molds and fungi that cause stains, odors and product degradation that can cause stains, odors and product degradation. The antimicrobial additive becomes an integral part of the HVAC components and therefore is maintenance free.

Abstract: An air conditioning arrangement for a work vehicle having a cabin includes: a hood disposed forwardly of the cabin; an air conditioning unit housed in the hood forwardly of the cabin; and a dashboard provided in a front portion in the cabin. The air conditioning unit includes a rear duct for delivering conditioned air rearward and a front duct having a portion for delivering conditioned air frontward. The front duct further has a portion extending rearward under the air conditioning unit. The dashboard includes an upper outlet, a defrost outlet and a lower outlet. Each of the upper outlet, the defrost outlet and the lower outlet is communicated with either one of the front duct and the rear duct.

Abstract: The present invention relates to a combined cooling/climate control system for motor vehicles for cooling the motor vehicle's electrical and/or electronic components and air conditioning of a passenger compartment of the vehicle, comprising: a main ventilation duct (13); a fan (15) for drawing in air disposed in the main ventilation duct; a heating unit (16) downstream of the fan (15) for selective warming of air, which is to be supplied to the passenger compartment; and for cooling the electrical and/or electronic components with air drawn in by the fan (15), an air supply pipe (20) downstream of the fan (15) and upstream of the heating unit (16) connected to the main ventilation duct (13) and an air discharge pipe (22) upstream of the fan (15) connected to the main ventilation duct (13).

Abstract: An evaporator placed in a vehicle compartment includes a meandering flattened pipe, a header joined with one end of the flattened pipe for introducing a compressed refrigerant from a compressor placed in an engine room, and a header joined with the other end of the flattened pipe for discharging the refrigerant toward the compressor, wherein both headers are located in the engine room.

Abstract: In a vehicle air conditioner, when a passenger set temperature of a vehicle compartment is changed through an operation portion by a passenger, a storage portion updates a value of a control set temperature corresponding to a predetermined point of a detection area at a time of the changing operation to a value of the changed passenger set temperature, and stores therein the value of the updated temperature. Furthermore, when the detection point is not any one of the predetermined points, a control portion interpolates and calculates a control set temperature corresponding to the detection point from the control set temperature stored in the predetermined point of the detection area and the control set temperature stored in the predetermined point of a surrounding area around the detection area, and then controls the air-conditioning state in the vehicle compartment based on the interpolated and calculated control set temperature.

Abstract: The present invention provides a system for controlling at least two functions selected from the group consisting of ventilation, air cleaning, seat temperature and inside temperature of a vehicle when the vehicle engine is turned off, the system comprising: (a) a solar cell module providing driving power from solar heat; and (b) a controller operating the solar cell module by stepwise magnitudes of a current input from the solar cell module. A method for controlling the system is also provided.

Abstract: A pipe structure of an electric compressor has an electric compressor disposed in an engine compartment of a vehicle and configured to be driven by a battery power source to compress a refrigerant, a harness connecting portion disposed on an upper surface of the electric compressor and electrically connecting a harness to the electric compressor, and a pipe connecting portion disposed forward of the harness connecting portion and connecting an air conditioner pipe to the electric compressor. At least a part of the air conditioner pipe is disposed above the electric compressor and forward of the harness connecting portion.

Abstract: A method of controlling an air conditioner in a hybrid car includes the steps of operating a blower at a low level after initial startup, controlling the blower for a predetermined time during idle-stop, maintaining a compressor duty to zero, and activating an air conditioner indicator during idle-stop. In the step of controlling a blower for a predetermined time during idle-stop, an operation mode may be automatically switched from a fresh mode to a recycle mode.

Abstract: A shore power HVAC system for a vehicle is provided. The vehicle has a vehicular HVAC system with an engine compressor, a condenser, and an expansion valve and an evaporator coupled to each other in series by a plurality of conduits. The shore power HVAC system includes an electric compressor structured to compress a coolant fluid and a diverter valve structured to allow fluid to pass through a selected fluid path. The electric compressor is coupled to, and in fluid communication with the evaporator and the diverter valve. The diverter valve is further coupled to the engine compressor. Thus, a first coolant fluid loop and a second coolant fluid loop are created. The first coolant fluid loop passes through, in series, the engine compressor, the diverter valve, the condenser, the expansion valve, and the evaporator. The second coolant fluid loop passes through, in series, the electric compressor, the diverter valve, the condenser, the expansion valve and the evaporator.

Abstract: In a hybrid vehicle air conditioning system in which coolant is supplied to a heater core from a vehicle running engine, for heating, a demand of the operation of the vehicle running engine is controlled to obtain respective set coolant temperatures TWS2 for target air-outlet temperature TAO of air sent out into a passenger compartment during a bilevel mode operation and TWS1 for the target air-outlet temperature TAO during a foot mode operation by setting the set coolant temperature TWS2 higher than the set coolant temperature TWS1.

Abstract: An air conditioner comprises: a refrigerating cycle including a compressor and an evaporator; a heater core for heating the air that has passed through the evaporator; a first sensor for acquiring information related to a temperature of the evaporator; a second sensor for acquiring information related to a temperature of a medium to supply heat to the heater core; and a compressor control unit for controlling the compressor. When the temperature of the evaporator is not higher than a predetermined threshold temperature, the compressor control unit reduces a ratio of compression of the refrigerant by the compressor. When the temperature of the medium is not more than a first predetermined value, the compressor control unit sets the threshold temperature at a value higher than a frost limit temperature of the evaporator.

Abstract: The present invention relates to an air conditioner for vehicles, and more particularly, to an air conditioner for vehicles, in which a seat vent is formed on an air-conditioning case to supply some of air existing in a mixing area formed inside the air-conditioning case to the seat and a heat exchanger for seat is also mounted in the air-conditioning case, thereby securing an installation space for installing convenient devices inside a seat, and in which the air conditioner is utilized to cool and heat the seat, thereby reducing consumption of energy by enhancing efficiency, decreasing the number of components since additional temperature-adjusting door is not needed, and supplying a fixed amount of air to the seat regardless of air-conditioning modes.