Abstract: A heat exchanger is provided for a motor vehicle air-conditioning system with an inner tube and with an outer tube, which at least in regions encloses the inner tube in the region of a line portion subject to forming an intermediate space in tube longitudinal direction through which a heat exchanger medium can flow. The intermediate space at least in portions is subdivided into at least three flow channels with at least three webs running in tube longitudinal direction, which open into a distribution or manifold space formed through radial expansion of the outer tube, in which the webs compared with the line portion have a smaller extension in radial direction.

Abstract: A method for manufacturing a connection between a hose and coaxial line section is provided. The method includes providing an outer pipe, inserting an inner pipe along with a hose situated at least partially on an outer periphery of the inner pipe inside the outer pipe, and deforming the outer pipe, the inner pipe or both so that the hose becomes clamped between the inner pipe and outer pipe. A coaxial line section for a refrigerant circuit of a motor vehicle also is provided.

Abstract: A heat exchanger for a motor vehicle air-conditioning system includes: an outer tube, and an inner tube. The outer tube has a first path inlet and a first path outlet through which a first fluid is permitted to flow. The inner tube is disposed within the outer tube and has a second path inlet and a second path outlet through which a second fluid is permitted to flow. The inner tube branches off in a first region into at least two heat exchanger tubes.

Abstract: Exhaust systems of a combustion engine of a motor vehicle, motor vehicles with exhaust systems, and methods for operating an exhaust system of a combustion engine in a motor vehicle are provided. An exhaust system includes an exhaust line comprising a heat exchanger branch and a bypass branch. The exhaust line has an adjustable control element by which combustion gas flowing through the exhaust line is fed to the heat exchanger branch and/or the bypass branch. A heat exchanger is connected to the heat exchanger branch and to a cooling circuit and an adjusting mechanism has an actuator for adjustment of the adjusting mechanism. The adjusting member of the adjusting mechanism is configured such that the actuator is spaced from the exhaust line.

Abstract: A connection device of a double-walled heat exchanger tube is provided, in particular for the heat exchanger of a motor vehicle air conditioning system. The heat exchanger tube has an outer tube and an inner tube that runs coaxially inside the outer tube spaced radially apart from it. The connection device further has a fitting for accommodating radially overlapping end sections of the inner and outer tube. The outer and inner tubes according to the invention are at least sectionally joined together without soldering in the area of the fitting, and with the fitting.

Abstract: A heat exchanger for a motor vehicle air-conditioning system is disclosed having an inner tube and with an outer tube. The outer tube at least partially encloses the inner tube in the longitudinal direction of the tube and form an intermediate space through which a heat exchanger medium can flow. Radially extending web at least partially divided the intermediate space into multiple flow channels between the inner tube and the outer tube. The multiple flow channels open in the longitudinal direction into a distributor or collector space formed through a radial tapering of the inner tube.

Abstract: A heat exchanger is provided for a motor vehicle air-conditioning system with an inner tube and with an outer tube, which at least in regions encloses the inner tube in the region of a line portion subject to forming an intermediate space in tube longitudinal direction through which a heat exchanger medium can flow. The intermediate space at least in portions is subdivided into at least three flow channels with at least three webs running in tube longitudinal direction, which open into a distribution or manifold space formed through radial expansion of the outer tube, in which the webs compared with the line portion have a smaller extension in radial direction.

Abstract: Exhaust systems of a combustion engine of a motor vehicle, motor vehicles with exhaust systems, and methods for operating an exhaust system of a combustion engine in a motor vehicle are provided. An exhaust system includes an exhaust line comprising a heat exchanger branch and a bypass branch. The exhaust line has an adjustable control element by which combustion gas flowing through the exhaust line is fed to the heat exchanger branch and/or the bypass branch. A heat exchanger is connected to the heat exchanger branch and to a cooling circuit and an adjusting mechanism has an actuator for adjustment of the adjusting mechanism. The adjusting member of the adjusting mechanism is configured such that the actuator is spaced from the exhaust line.

Abstract: A heat exchanger for a motor vehicle air conditioning system is provided. The heat exchanger includes an inner tube through which a heat exchanger medium can flow, an outer tube that at least regionally envelops the inner tube forming an intermediate space, and a regulating unit fluidically connected to the intermediate space. The regulating unit is configured to alter the flow resistance of the intermediate space as a function of the temperature of a heat exchanger medium that flows through the intermediate space.

Abstract: A heat exchanger for a motor vehicle air conditioning system is provided. The heat exchanger includes an inner tube through which a heat exchanger medium can flow and a flexible outer tube that at least regionally envelops the inner tube with the formation of a flow-through intermediate space. The inner tube exhibits a tubular section that enables a change in length and/or direction of the inner tube and runs inclined relative to the longitudinal direction of the outer tube.

Abstract: A heat exchanger for a motor vehicle air conditioning system is provided. The heat exchanger includes an inner tube configured to carry a heat exchanger medium and an outer tube that at least regionally envelops the inner tube with an intermediate space between the inner tube and the outer tube. A separating web extends between the inner tube and the outer tube and is configured to divide the intermediate space into at least two flow channels. In an axial section of the inner tube and the outer tube, the separating web fluidically couples the flow channels with each other as viewed in a circumferential direction of the inner tube.

Abstract: A method is provided for ascertaining the setting of an exhaust gas flap, which is situated so it is adjustable in an exhaust system of a motor vehicle, by which a combustion gas flowing through an exhaust tract can alternately be supplied to a heat exchanger branch and/or a bypass branch, a pressure prevailing in the heat exchanger branch and/or in the bypass branch being measured to ascertain the setting of the exhaust gas flap, and a current position of the exhaust gas flap being ascertained by a comparison of the measured pressure to a reference value.

Abstract: A charge air cooling device is provided for a combustion engine with a first heat exchanger configured to transmit thermal energy of a charge airflow to a coolant and with a second heat exchanger by which thermal energy of the coolant can be discharged into the surroundings. The first heat exchanger is designed as coaxial tube heat exchanger, which directly connects a compressor provided for the combustion air to the engine.

Abstract: A heat exchanger is provided for a motor vehicle air-conditioning system with an outer tube through which a fluid and/or a gas can flow and at least one inner tube through which a fluid and/or gas can flow, which at least in sections and subject to the formation of an intermediate space through which a flow can flow runs within the outer tube and in a first region located within the outer tube branches off into at least two heat exchanger tubes.

Abstract: In an air conditioner having a refrigerant conducted in a cooling circuit, the cooling circuit includes, but is not limited to at least one vaporizer situated on a low-pressure side, a condenser situated on a high pressure side, a compressor connected between low-pressure side and high pressure side, and a thermostatic expansion valve connected between high pressure side and low pressure side, furthermore, an inner heat exchanger being provided for transferring heat from the refrigerant on the high-pressure side to refrigerant on the low-pressure side, and the thermostatic expansion valve having a head with a control filling, the characteristic curve of the control filling having a slope s with approximately 0.75 bar/10° C.?s?1.05 bar/10° C.

Abstract: A heat exchanger is provided for an exhaust gas system of a motor vehicle having a heat exchanger body, which can have a heat exchanger medium flow through it, and which is in permanent thermal contact with an exhaust gas train of an internal combustion engine of the motor vehicle, the heat exchanger body at least sectionally enclosing the exhaust gas train and being able to be fluidically coupled with a cooling loop of the internal combustion engine and/or with a transmission oil loop.

Abstract: A tubular heat exchanger is provided for a motor vehicle air conditioner with an inner tube through which a fluid or gas can flow and an outer tube radially enclosing the inner tube subject to the formation of an intermediate space through which a flow can flow. The inner tube and the outer tube are at least radially fixed to each other by means of a number of stampings radially worked into the outer tube.

Abstract: A connection device of a double-walled heat exchanger tube is provided, in particular for the heat exchanger of a motor vehicle air conditioning system. The heat exchanger tube has an outer tube and an inner tube that runs coaxially inside the outer tube spaced radially apart from it. The connection device further has a fitting for accommodating radially overlapping end sections of the inner and outer tube. The outer and inner tubes according to the invention are at least sectionally joined together without soldering in the area of the fitting, and with the fitting.

Abstract: A tubular heat exchanger is provided for a motor vehicle air conditioner with an inner tube through which a fluid or gas can flow and an outer tube radially enclosing the inner tube subject to the formation of an intermediate space through which a flow can flow. The inner tube in this case includes, but is not limited to a quantity of stampings arranged spaced from one another and with their longitudinal extension at least partially extending in axial direction of the inner tube.