Abstract: The invention relates to a stacked panel-shaped heat transmitter comprising a plurality of interstacked trough-shaped panels (23,24) of a first and second type forming therebetween flow channels (25,26) for a first medium at a first height h and for a second medium at a second height H. The panels (23,24) have erect peripheral edges which are soldered to each other, the height thereof being different for the first and second type of panel. According to the invention, the first type of panel (23) has an edge (23a) corresponding to height h1 and a flank angle A. The second type of panel (24) has a higher edge which consists of at least three sections (24a, 24b, 24c), the height thereof being H1, H2 and H3. The first edge section (24a) corresponding to a height H1 and the third edge section (24c) corresponding to a height H3 respectively have a flank angle ?. The second edge section (24b) corresponding to height H2 extends vertically in relation to the base of the panel (24e).

Abstract: The invention relates to an arrangement for recirculating and cooling exhaust gas of an internal combustion engine (2), in particular of a diesel engine in a motor vehicle, wherein the internal combustion engine (2) has an exhaust line (3) with an exhaust gas turbine (6) and an intake line (4) with a charge air compressor (8) which is driven by the exhaust gas turbine (6), wherein an extraction point (11) for branching off an exhaust gas recirculation line (EGR line 5) is arranged downstream of the turbine (6) and a recirculation point (12) for recirculating the EGR line (5) is arranged upstream of the compressor (8), and wherein at least one exhaust gas heat exchanger (13) and an EGR valve (14) are arranged in the EGR line (5). It is proposed according to the invention that a charge air throttle element (17) is arranged in the intake line (4) and that the EGR valve (14), the recirculation point (12) and the throttle element (17) are formed as an integrated component (19).

Abstract: The invention relates to a one-piece turbulence insert for a heat exchanger (1), particularly for a radiator of a motor vehicle, comprising an essentially corrugated profile. The turbulence insert (24) has a number of sections (41-45) with corrugated profiles that extend in the same direction of the extension of the corrugations and which, perpendicular to the direction of the extension of the corrugations, are offset from one another. In order to enable a better thermodynamic efficiency, the turbulence insert (24) has a number of sections (27-32, 41, 45) with corrugated profiles extending in different directions of extension of the corrugations.

Abstract: The invention relates to exhaust gas heat exchangers, as they are generally known, and to a sealing device which is especially suitable for using in exhaust gas heat exchangers. The inventive exhaust gas heat exchanger comprises connection points for the exhaust gas flow, for connecting the exhaust gas heat exchanger both to an exhaust gas supply line for supplying a hot exhaust gas and an exhaust gas withdrawal line for withdrawing the exhaust gas flow cooled in the exhaust gas heat exchanger. The exhaust gas flow flows through the exhaust gas heat exchanger in a bundle of exhaust gas guiding pipes in a flow direction. A coolant also flows through the exhaust gas heat exchanger, in a coolant flow. To this end, the exhaust gas heat exchanger is provided with at least one coolant supply connection and at least one coolant withdrawal connection. The coolant is guided in a coolant channel in the exhaust gas heat exchanger, inside which it flows around the bundle of exhaust gas guiding pipes.

Abstract: The invention relates to a heat exchanger, especially a charge air cooler (5) for motor vehicles. Said heat exchanger comprises a heat exchange block which is constituted of flat tubes (6) having flat tube ends and ribs (7) and tube bottoms (8) having ventilation passages (9) in which the flat tube ends are received and welded together. The heat exchanger also comprises collecting tanks that can be placed on the tube bottoms (8) and means for deflecting the flow in the feed section of the flat tube ends. The inventive heat exchanger is characterized in that the means for deflecting flow (deflection means 2) and means for reinforcing the flat tube ends (reinforcing means) are configured as an integrated structural component (1).

Abstract: Device for exchanging heat between an acidiferous gas and a heat transfer medium, with at least one flow duct for the acidiferous gas which consists essentially of aluminum and/or an aluminum alloy.

Abstract: The invention relates to an exhaust gas turbocharger internal combustion engine comprising at least one cylinder in which a fuel-air mixture which is pre-compressed by means of a compressor (10) is compressed and burned. Exhaust gas is created, that is evacuated from the cylinder and released in a turbine (19). Part of the exhaust gas evacuated from the cylinder is recirculated, before it is released in the turbine (19), via a high-pressure recirculation system provided with an exhaust gas cooling device comprising at least two cooling circuits that are guided through heat exchanging blocks (26,27) that are successively connected in the flow direction of the exhaust gas. The air of the invention is to create an exhaust gas turbocharger internal combustion engine that can be economically produced and has a high output.

Abstract: The invention relates, in general, to internal combustion engine cooling, in particular for a motor vehicle, more specifically to a cooling agent compensation tank of a cooling circuit, in particular a low-temperature circuit for indirectly cooling a super-charging air for an internal combusting engine and to a method for cooling a highly heated structure, in particular an internal combustion engine. The inventive compensation tank is integrated into a main cooling circuit, wherein a means for directly introducing the cooling fluid is arranged on the compensation tank between the input and output connections and the cooling fluid flow coming into the compensation tank runs directly from the input connection to the output connection by means of said directly introducing means.

Abstract: The invention relates to a flap (2) of a motor vehicle ventilation system, which is disposed in a housing (1) in the mounted state and controls the air supply to the interior of the vehicle along with a second flap (4). The flap (2) according to the invention comprises a pivot axis about which the same can be pivoted. At least one portion of the flap area (2?) is pivotable and/or flexible to the pivot axis or shaft (2?) and/or another portion of the flap (2) juxtaposing the pivot axis.

Abstract: The invention relates to a cooling circuit of an internal combustion engine of motor vehicles, comprising a main cooling circuit that encompasses a section located upstream of the radiator, a main radiator, a radiator return path, a coolant pump, a main thermostat, and a bypass or short circuit which is disposed between the main thermostat and the coolant pump. Said cooling circuit further comprises a low-temperature circuit encompassing a low-temperature radiator, a low-temperature radiator return path, a valve unit, and an additional heat exchanger.

Abstract: The invention relates to an exhaust gas heat exchanger, in particular, to an exhaust gas cooler for exhaust gas recirculation in a motor vehicle comprising heat exchanging channels (3) which are coolable by a fluid and passed through by the exhaust gas, wherein the inventive exhaust gas heat exchanger (1) is integrated into an oxidation catalyst comprising a support provided with an oxidation catalyst coating (6) in such a way a deposit (5) is formed in the channels (3).

Abstract: The invention relates to a condenser for an air-conditioning system, particularly for a motor vehicle, with vertically arranged tubes, through which a coolant can flow and which are connected to an upper and a lower horizontally arranged manifold whereby permitting the flow of coolant. The inventive condenser also comprises a collector parallelly arranged underneath the lower manifold and, via an inflow opening and an outflow opening, between which a separating device is placed, is connected to the manifold in a manner that permits the flow of coolant. The collector accommodates a filtering and/or drying device. The separating device has a suction device for, in essence, liquid coolant.

Abstract: The invention relates to an axial ventilator for the cooling device of an internal combustion engine, in particular for a motor vehicle, wherein said axial ventilator comprises a rotatably driven hub (2) provided with air blades (11-19) which are fixed thereto and radially inwardly limited by an internal diameter (Di) and radially outwardly limited by an external diameter (Da). In order to obtain a small-sized axial ventilator, the ratio between the internal (Di) and external (Da) diameters is greater than 40%.

Abstract: The invention concerns a micro-heat exchanger having a microstructure of channels (2) arranged at least in one matrix element (1) in the form of a plate and circulating at least one coolant, said matrix element (1) having upper and lower surfaces (5, 6) as well as lateral surfaces (3, 4). The invention is characterized in that the channels (2) are open on the upper surface (5) and/or on the lower surface (6) and closed on the lateral surfaces (3, 4).

Abstract: The invention relates to a frame part (10) for a tubular heat exchanger. The frame part (10) according to the invention is designed for being fastened (10) to a tubular body that is constituted of a number of parallel tubes through which a heat-exchange medium flows. The tubes run at both ends into a collecting tube which extends at an angle to the tubes. The tubular heat exchanger is provided with a frame part (10) on at least one of the sides of the tubular body that runs parallel to the tubes. Said frame part occludes the tubular heat exchanger from the exterior and can be at least indirectly linked with the collecting tubes. According to the invention, the frame part (10) has at least one predetermined breaking point (20).

Abstract: The invention relates to a heat exchanger (1) having a plurality of tubes (4) and at least one box (3) that is closed by a bottom (2) provided with openings (6), at least one end (5) of the tubes (4) leading to said box.

Abstract: The invention relates to a method for soldering an all-aluminum heat exchanger, particularly a coolant radiator (1) for motor vehicles with a collecting reservoir (2) inside of which an additional heat exchanger (4), particularly a transmission oil cooler is placed. The invention also relates to a heat exchanger produced according to this method. The invention provides that the additinal heat exchanger (4) is, according to the so-called Nocolok® method, firstly soldered separately in a vacuum before being soldered together with the all-aluminum heat exchanger (1). The additional heat exchanger (4) is attached to the collecting reservoir (2) only via connecting sleeves (5) and soldered nuts (7).

Abstract: The invention relates to a solder film for soldering parts, particularly plates of heat exchangers. To this end, the solder foil has a defined contour adapted to the parts to be soldered. According to the invention, the solder foil (12) can be produced as a part of a strip (11) of individual foils (12) connected to one another by material bridges (13).

Abstract: The invention relates to a heating device for motor vehicles with an internal combustion engine and a coolant circuit. The heating device (1) comprises a heat-generation compartment (2) with a cooling jacket (6) around which a coolant flows, and a rotor (13) mounted on a drive shaft (9). The cooling jacket (6) is part of a cooling chamber (3) that comprises a coolant inlet (4) and a coolant outlet (5). A pump wheel (17) is disposed in the cooling compartment (3), is driven by the drive shaft (9) and circulates the coolant.

Abstract: The invention relates to a heat exchanger of a plate-type construction having first flow channels for a first medium, each formed by a pair of plates, and having corrugated ribs, around which a second medium flows, arranged between neighboring plate pairs. In order to provide an improved heat exchanger which allows a more compact construction of the plant when used in a heating or air conditioning unit of a motor vehicle, it is proposed that the corrugated ribs and at least one of the neighboring plate pairs form second flow channels for the second medium and the second flow channels have a curved course, so that the second medium undergoes a change of flow direction on flowing through the heat exchanger.