Abstract: A heat pump system for climate control of an electric or hybrid vehicle includes an air conditioning unit having a heating heat exchanger, and an air conditioning unit evaporator having a refrigeration circuit, in which the air conditioning unit evaporator and a condenser are arranged. The refrigeration circuit includes a low temperature (LT) circuit in which at least one electrical power component is arranged. The heat pump system is configured to switch over between a cooling mode and a heating mode. The condenser, which is configured to transfer heat into the LT circuit, and an LT cooler are incorporated into the LT circuit. In the heating mode, the condenser outputs heat into the LT circuit and from there into a heating circuit, in which the heating heat exchanger is arranged, and in the cooling mode, the condenser outputs heat via the LT circuit to the LT cooler.

Abstract: A method of operating a refrigerant circuit as a heat pump is provided. By way of a compressor, refrigerant is compressed and is pumped through a refrigerant/heating heat exchanger. The refrigerant coming from the refrigerant/heating heat exchanger is expanded in at least a first expansion element. The refrigerant expanded by way of the first expansion element flows to a suction input of the compressor through at least one evaporator. At a branch-off point of the refrigerant/heating heat exchanger situated between a refrigerant input and a refrigerant output of the refrigerant/heating heat exchanger, refrigerant is branched off and is guided by way of a second expansion element in the direction of the suction input of the refrigerant compressor.

Abstract: A vehicle is provided with a heating device. The heating device includes an electrically driven heat source and a reflector configured to reflect heat radiation emitted by the heat source in the direction of a passenger compartment of the vehicle. The vehicle further includes a contact protection device which is permeable to radiation so that heat radiation reflected by the reflector or emitted by the heat source radiates into the passenger compartment. The heat source and the reflector are arranged on one side of the contact protection device, and the side is averted from the passenger compartment.

Abstract: A vehicle has an electric heating device which in operation reaches a temperature of more than 50° C., and includes a flat perforated decorative layer which is disposed on a front face of the heating device. Because of the perforation of the decorative layer, the heating device can radiate infrared radiation through holes provided in the decorative layer directly into a passenger compartment of the vehicle. The vehicle also has a reflector layer which is disposed on a rear face of the heating device facing away from the front face and is provided in order to reflect infrared radiation emitted by the heating device in the direction of the passenger compartment.

Abstract: The invention relates to a method and a system for preconditioning a heating and/or cooling unit in a motor vehicle while the motor vehicle is at a standstill. The heating and/or cooling unit draws energy to heat and/or cool the vehicle interior from an electrical store. While the vehicle is at a standstill, the heating and/or cooling unit is activated in a first power stage in response to a signal of a remote starting device, and is then switched from the first power stage to a second power stage based on specified conditions. The first power stage may be designed such that the heating and/or cooling circuit is internally preconditioned to reach a specified target temperature by appropriately controlling the heating and/or cooling unit with the ventilation flaps at least nearly closed.

Abstract: A method of operating a refrigerant circuit as a heat pump is provided. By way of a compressor, refrigerant is compressed and is pumped through a refrigerant/heating heat exchanger. The refrigerant coming from the refrigerant/heating heat exchanger is expanded in at least a first expansion element. The refrigerant expanded by way of the first expansion element flows to a suction input of the compressor through at least one evaporator. At a branch-off point of the refrigerant/heating heat exchanger situated between a refrigerant input and a refrigerant output of the refrigerant/heating heat exchanger, refrigerant is branched off and is guided by way of a second expansion element in the direction of the suction input of the refrigerant compressor.

Abstract: Thermal conditioning of a combustion engine of a vehicle is achieved by means of a fluid circuit or a sub-circuit of the fluid circuit and/or the air flowing into a passenger compartment of the vehicle by means of a heat pump circuit. In at least one operational state of the vehicle, heat is transferred from the fluid circuit or the sub-circuit of the fluid circuit to the heat pump circuit.

Abstract: A method of heating the interior of a vehicle is provided. The vehicle has a central heating system and several decentralized heating surfaces constructed as infrared radiators. The temperature of the vehicle interior is controllable by the central heating system and/or the decentralized heating surfaces corresponding to a heating demand of at least one vehicle occupant. For controlling the temperature of the vehicle interior corresponding to a heating demand, a power distribution takes place between the central heating system and the decentralized heating surfaces as a function of specified distribution demands.

Abstract: A method of heating the interior of a vehicle is provided, particularly of a hybrid or electric vehicle. The vehicle has a central heating system and several decentralized heating surfaces constructed as infrared radiators. The temperature of the vehicle interior is controllable by the central heating system and/or the decentralized heating surfaces corresponding to a heating demand of at least one vehicle occupant. For controlling the temperature of the interior by way of the decentralized heating surfaces, the heating power of at least one decentralized heating surface is specified or influenced as a function of the position of the vehicle occupant or of a part of the vehicle occupant's body relative to the respective decentralized heating surface or to a defined group of several decentralized heating surfaces.

Abstract: A method and a correspondingly designed motor vehicle are provided for pre-climatizing the motor vehicle when shut-off by way of a heating and/or cooling unit, which draws its energy for heating and/or cooling from an electric storage unit. When the heating and/or cooling unit is activated by a vehicle external operator control element, the heating and/or cooling unit is initially activated in a first output stage. Then, the heating and/or cooling unit is switched from the first output stage to a second output stage as a function of predetermined conditions.

Abstract: A method and a correspondingly designed motor vehicle are provided for pre-climatizing the motor vehicle when shut-off by way of a heating and/or cooling unit, which draws its energy for heating and/or cooling from an electric storage unit. When the heating and/or cooling unit is activated by a vehicle external operator control element, the heating and/or cooling unit is initially activated in a first output stage. Then, the heating and/or cooling unit is switched from the first output stage to a second output stage as a function of predetermined conditions.

Abstract: The invention relates to an expansion device for a refrigerant, in particular an expansion device to control the high-pressure level of an air conditioner. In accordance with the invention, it is provided that the expansion device (16) is a sliding seat valve (22). In addition, the invention relates to an air conditioner (10), in particular an air conditioner (10) for a motor vehicle, with a compressor (12), a condenser or gas cooler (14), an expansion device (16) as well as an evaporator (18). In accordance with the invention, it is proposed that the expansion device (16) is formed by at least one sliding seat valve (22).

Abstract: The invention relates to a system for cooling and heating, having a first heat exchanger (10) for outputting heat to and extracting it from a heat reservoir (12); a second heat exchanger (14) for extracting heat from and outputting it into a space (16) to be cooled or heated; a compressor (18); an expansion device (20); and means (22, 24) for switchover between a cooling mode and a heating mode; wherein the switchover means (22, 24) are integrated with a module (26). The invention also relates to a method for switching over between a cooling mode and a heating mode.

Abstract: The invention relates to an expansion device for a refrigerant, in particular an expansion device to control the high-pressure level of an air conditioner. In accordance with the invention, it is provided that the expansion device (16) is a sliding seat valve (22). In addition, the invention relates to an air conditioner (10), in particular an air conditioner (10) for a motor vehicle, with a compressor (12), a condenser or gas cooler (14), an expansion device (16) as well as an evaporator (18). In accordance with the invention, it is proposed that the expansion device (16) is formed by at least one sliding seat valve (22).

Abstract: The invention is based on a climate control system for a vehicle that is driven by an internal combustion engine (10), having a heating heat exchanger (24) which is connected to a coolant loop (12) of the engine (10) and is preceded upstream of a blower (48) by an evaporator (44), and a compressor (50) in a refrigerant loop (40), during a cooling mode, pumps a refrigerant via a gas cooler (42) and via an expansion valve (54) to the evaporator (44) and during a heating mode pumps it to the evaporator bypassing the gas cooler (42), and between the coolant loop (12) and the refrigerant loop (40) a coupling heat exchanger (38) is provided.

Abstract: The invention relates to a system to regulate the heat balance of a vehicle, with a heat cycle that dissipates engine heat, which features a cooling circuit (38) and a heating circuit (36), through which circuits a coolant can flow, and with at least one component (20) of the vehicle producing waste heat, wherein a system is provided with which the waste heat of at least one component of the vehicle can be transferred to the heat cycle.

Abstract: The invention relates to an air-conditioning unit (10) for a motor vehicle with a heating heat transfer unit (28) connected to a coolant circuit (42) in an internal combustion engine and comprising an evaporator (22) installed upstream in the direction of flow of a fan (36). A compressor (12) in a refrigerant circuit (32) pumps a refrigerant through a gas cooler (16) and an expansion valve (20) during a cooling operation, and pumps said refrigerant to the evaporator (22) via the expansion valve (20) by by-passing the gas cooler (16) during a heating operation. A coupled heat exchanger (30) is provided between the coolant circuit (42) and the refrigerant circuit (32).

Abstract: The invention relates to an air-conditioning unit (10) for a motor vehicle with a heating heat transfer unit (28) connected to a coolant circuit (42) in an internal combustion engine and comprising an evaporator (22) installed upstream in the direction of flow of a fan (36). A compressor (12) in a refrigerant circuit (32) pumps a refrigerant through a gas cooler (16) and an expansion valve (20) during a cooling operation, and pumps said refrigerant to the evaporator (22) via the expansion valve (20) by by-passing the gas cooler (16) during a heating operation. A coupled heat exchanger (30) is provided between the coolant circuit (42) and the refrigerant circuit (32).

Abstract: The invention is based on a climate control system for a vehicle that is driven by an internal combustion engine (10), having a heating heat exchanger (24) which is connected to a coolant loop (12) of the engine (10) and is preceded upstream of a blower (48) by an evaporator (44), and a compressor (50) in a refrigerant loop (40), during a cooling mode, pumps a refrigerant via a gas cooler (42) and via an expansion valve (54) to the evaporator (44) and during a heating mode pumps it to the evaporator bypassing the gas cooler (42), and between the coolant loop (12) and the refrigerant loop (40) a coupling heat exchanger (38) is provided.

Abstract: The present invention relates to a cooling device, in particular for cooling of components of power electronics, using a coolant which flows through a micro heat exchanger (10) having a good heat contact with the component (1), and wherein the coolant is selected in such a way that it evaporates in the micro heat exchanger (10) at the desired component temperature.