Abstract: The invention relates to a heat exchanger for an air-conditioning system (54) of a motor vehicle having a plurality of conducting members (102) for a refrigerant, between which air can flow for heat exchange purposes. In order to provide a heat exchanger which supplies refrigerating output even when the compressor is switched off, the conducting members (102) are penetrated by one or more storage members (114) in which a storage medium is contained.

Abstract: Disclosed is a heating and/or air-conditioning system for a vehicle and a method for adjusting a recirculating air fraction of the inlet air delivered to a passenger compartment of a vehicle in order to avoid exceeding a predetermined limit value of at least one air parameter, in particular the carbon dioxide fraction and/or the humidity in the passenger compartment air. The method provides that one or more secondary parameters be obtained and analyzed for indirect determination of the air parameter, and that the recirculating air fraction be adjusted as a function of the analysis.

Abstract: Disclosed is a heating and/or air-conditioning system for a vehicle and a method for adjusting a recirculating air fraction of the inlet air delivered to a passenger compartment of a vehicle in order to avoid exceeding a predetermined limit value of at least one air parameter, in particular the carbon dioxide fraction and/or the humidity in the passenger compartment air. The method provides that one or more secondary parameters be obtained and analyzed for indirect determination of the air parameter, and that the recirculating air fraction be adjusted as a function of the analysis.

Abstract: The invention relates to a heat exchanger for an air-conditioning system (54) of a motor vehicle having a plurality of conducting members (102) for a refrigerant, between which air can flow for heat exchange purposes. In order to provide a heat exchanger which supplies refrigerating output even when the compressor is switched off, the conducting members (102) are penetrated by one or more storage members (114) in which a storage medium is contained.

Abstract: An air-conditioning system is disclosed for a cab of a commercial vehicle, which has a driver's area, a front-passenger's area and a sleeping area in the cab interior. The system is constructed as simply and cost-effectively as possible and permits more economical air-conditioning of the individual areas of the cab interior. The air-conditioning system has at least two fans (30, 32, 34) and a central control unit (16) that contains at least one heater and at least one cooling heat exchanger. Air temperature is controlled individually for each area and is guided via individual air ducts (20, 22, 24, 26, 28) into the respective areas. A first fan (30) is assigned to the drivers and front-passenger's area, and at least one second fan (32, 34) is assigned to the sleeping area.

Abstract: An air-conditioning system for a motor vehicle has a circuit (14) which is capable of being changed over from cooling to heating. The system has a heater (22), through which the air to be conditioned flows, a cooling heat exchanger (18) acting as an evaporator in the cooling mode, and an additional heat exchanger (20) capable of being selectively used for providing auxiliary heat in the heating mode. The additional heat exchanger can be advantageously utilized by operating it as an auxiliary cooling heat exchanger, acting as an evaporator, in the cooling mode.

Abstract: A four zone conditioned air unit for use in a motor vehicle providing heating or cooling to a plurality of regions having relatively independent temperature setting. The structure provides compact, flexible and convenient temperature conditioning for each region.

Abstract: An air-conditioning system for a motor vehicle has a circuit (14) which is capable of being changed over from cooling to heating. The system has a heater (22), through which the air to be conditioned flows, a cooling heat exchanger (18) acting as an evaporator in the cooling mode, and an additional heat exchanger (20) capable of being selectively used for providing auxiliary heat in the heating mode. The additional heat exchanger can be advantageously utilized by operating it as an auxiliary cooling heat exchanger, acting as an evaporator, in the cooling mode.

Abstract: An air-conditioning system is disclosed for a cab of a commercial vehicle, which has a driver's area, a front-passenger's area and a sleeping area in the cab interior. The system is constructed as simply and cost-effectively as possible and permits more economical air-conditioning of the individual areas of the cab interior. The air-conditioning system has at least two fans (30, 32, 34) and a central control unit (16) that contains at least one heater and at least one cooling heat exchanger. Air temperature is controlled individually for each area and is guided via individual air ducts (20, 22, 24, 26, 28) into the respective areas. A first fan (30) is assigned to the drivers and front-passenger's area, and at least one second fan (32, 34) is assigned to the sleeping area.

Abstract: A conditioned air unit for use in a motor vehicle providing heating or cooling to a plurality of regions having relatively independent temperature setting. The structure provides compact, flexible and convenient temperature conditioning for each region.

Abstract: A conditioned air unit for use in a motor vehicle providing heating or cooling to a plurality of regions having relatively independent temperature setting. The structure provides compact, flexible and convenient temperature conditioning for each region.

Abstract: An air conditioner in a motor vehicle containing a refrigerant circuit, which includes an evaporator, an output-controlled compressor that is driven by an engine, a condenser and an expansion device is provided. The evaporator and the condenser are each assigned a blower for applying an air flow. To operate the air conditioner, there is provided an electronic control device which, as a function of input signals, generates output signals for driving actuators for output-controllable components of the air conditioner. For this purpose, at least two state variables of the refrigerant circuit are detected, and the cutoff function of the compressor is determined from a comparison of (i) a value, derived from the at least two state variables and relating to the current delivery rate of the compressor, with (ii) a prescribed value for the maximum delivery rate.

Abstract: A device and method for controlling air conduction in a vehicle includes an air conduction element. The air conduction element is controlled as a function of the moisture in the vehicle interior, intermediate positions of the air conduction element being possible between a maximum proportion of circulating air and a maximum proportion of fresh air. In this way, the proportion of fresh air is increased only gradually when there is a high pollution impact if the interior moisture does not exceed a maximum moisture value .PHI..sub.max. Control of the moisture in the vehicle interior increases the comfort of the vehicle occupants. A circulating-air dryer makes it possible, in principle, to continue in circulating-air operation for an unlimited period.

Abstract: A method for controlling a motor vehicle air conditioning system is described. The motor vehicle air conditioning system comprises a refrigeration circuit including a refrigerant compressor, a condenser, an evaporator and a throttle device arranged upstream of the evaporator. The condenser is associated with a ventilating fan and the evaporator is associated with a blower. The compressor capacity, the condenser capacity and the evaporator capacity are directly or indirectly sensed by sensor means and supplied as electrical variables to an electronic control circuit which logically combines these input signals and generates output signals in dependence on at least two of these capacity values and including further parameters. The control circuit acts on electrically controllable acturators for influencing the compressor capacity, the condenser capacity and/or the evaporator capacity.

Abstract: In an air conditioner for a motor vehicle, which, for the purpose of contling the humidity, has in the ir duct suitable devices, controlled by a microcomputer. The microcomputer receives values for outside temperature, inside temperature and inside humidity, measured by sensors. From the values for outside temperature, inside temperature and inside humidity, the microcomputer determines the threshold humidity (l.sub.thresh) as the ratio of the saturated vapor pressure (P.sub.S) inside at the pane and the saturated vapor pressure (P.sub.i) of the inside air. If this difference (.DELTA.l) between threshold humidity (l.sub.thresh) and inside humidity (l.sub.i) falls below a stipulated value (x), dehumidification devices are actuated. If the stipulated value is exceeded, humidification devices are actuated.

Abstract: An evaporator apparatus comprises an evaporator assembly to which a coolant is supplied by an expansion valve and a flow divider. The connecting means between the expansion valve and the flow divider is provided with at least one bend. The bend causes a non-homogeneous coolant flow at the flow divider, resulting in an uneven distribution of gaseous and liquid coolant to the individual evaporator pipe sets. A mixing element, provided directly upstream of the flow divider, has a flow cross-section which expands in the direction of the coolant flow, resulting in a brisk mixing of the gaseous and liquid coolant phases to provide a homogeneous mixture. Preferred embodiments of this mixing element include a cylindrical mixing cell having a preferred inlet diameter/cell diameter ratio, a tapered insert which first decreases and then increases the flow cross-section, and a simple screen. The two latter embodiments may be installed in pipes which have constant diameters.