Abstract: The invention relates to a heat exchanger having a tube bundle with tubes as heat exchanger matrix, it being possible for the tubes to be flowed through by a first fluid and in this way defining a first fluid channel, and to be flowed around by a second fluid and in this way defining a second fluid channel, the tube bundle being configured so as to be closed off toward the outside, in order to close off the second fluid channel, or being arranged in a housing, in order to close off the second fluid channel, the tubes being configured so as to be open on the end side for the inflow or outflow of the first fluid.

Abstract: The invention relates to a heat exchanger, in particular exhaust-gas cooler or charge-air cooler, comprising a plate stack composed of multiple elongate plate pairs, wherein in each case two interconnected plates form a first fluid duct between them, and a second fluid duct is formed between two plate pairs, wherein the plates of a plate pair are of U-shaped form with a bottom and upturned side walls and lie against one another so as to delimit the first flow duct, wherein one of the plates of a plate pair has, on its end side, a tab which serves for beading over around the end side of the other plate, wherein the tab on the bottom of the plate is beaded over, and the beading-over of the tab also continues into the side walls of the plates.

Abstract: The invention relates to a heat exchanger, in particular exhaust-gas cooler, having tubes of unipartite form or formed from two shell-like plates, which tubes form a first and a second fluid duct, wherein the respective fluid ducts are arranged adjacent to one another, wherein the first fluid duct is designed to be open at at least one of its ends for the inflow and/or outflow of the first fluid, wherein, at the ends, the tubes are, by way of an inward or outward step, designed such that the second fluid ducts are closed at the end side, wherein the step has a greater extent T in the tube longitudinal direction in the corner regions of the tube than between the corner regions.

Abstract: In an internal combustion engine having a system for utilizing the waste heat from the internal combustion engine via the Clausius-Rankine cycle, a system includes a circuit having lines with a working medium, a working medium pump, a vaporizer-exhaust gas heat exchanger, and a vaporizer-EGR heat exchanger, an expander, and a condenser for liquefying the vaporous working medium. The line for the working medium is run from the condenser to the vaporizer-EGR heat exchanger so that the working medium, after flowing through the condenser, first flows through the vaporizer-EGR heat exchanger, and the line for the working medium is run from the vaporizer-EGR heat exchanger to the vaporizer-exhaust gas heat exchanger so that the working medium, after flowing through the vaporizer-EGR heat exchanger, first flows through the vaporizer-exhaust gas heat exchanger.

Abstract: Disclosed is an intake pipe for a combustion engine, comprising a housing (1) with a supply duct (2) for especially compressed air, a heat exchanger (8) which is disposed within a main duct (4) in the housing (1) and through which the air can flow in order to exchange heat with a fluid, and a bypass duct (5) that is separated from the main duct (4) in at least some sections and is fitted with at least one positioning element (7) to allow the fed air to adjustably bypass the heat exchanger (8). An end of the bypass duct (5) on the engine side is placed at a still flow-relevant short distance from an opening (11) of an intake valve (10) of the combustion engine.

Abstract: A corrugated fin, in particular for a heat exchanger, having a substantially corrugated design, having a plurality of fin surfaces, wherein adjoining fin surfaces are connected to one another by means of a fin arch in such a way that a medium can flow through an intermediate space between adjoining fin surfaces, wherein the fin surfaces are arranged at an angle with respect to one another perpendicularly with respect to a throughflow direction for the medium, wherein the fin surface has at least one bulge which protrudes out of the plane of the fin surface, wherein the extent of the bulge in a direction perpendicularly with respect to the air throughflow direction is smaller than the extent of the fin surface in said direction.

Abstract: A heat exchanger may include a gas conduit flowable through by a predetermined gas and a heat conduit flowable through by a predetermined fluid compound working fluid. The heat conduit may be in thermal communication with the gas conduit. The heat exchanger may include a first section having a first section length, a second section having a second section length, and a third section having a third section length. The gas conduit may span, in a direction of flow of the gas, the first section, the second section, and the third section. The heat conduit may span, in a direction of flow of the working fluid, the third section, the first section, and the second section. The first section may include a gas inlet and the third section may include a working fluid inlet and a gas outlet. The section may include a working fluid outlet.

Abstract: A fin for a heat exchanger, comprising a fin plate which is corrugated in a longitudinal direction and which is arranged between two structures and comprising a multiplicity of fin flanks formed by the corrugation, wherein the fin plate can be traversed in a depth direction by a flow of an in particular gaseous fluid for the purpose of transferring heat between the structures and the gaseous fluid, and wherein a multiplicity of gills with a gill depth and with a gill angle with respect to the depth direction is provided in the fin plate, said gills being arranged one behind the other on the fin flanks, running on a neutral line and extending substantially transversely with respect to the depth direction. The fin flanks have, at least in regions, a substantially undulating structure profile, resulting in an arrangement of the gills which runs on an undulating neutral line.

Abstract: An exhaust gas recirculation system is provided that includes an internal combustion engine, which is supplied with exhaust gas, diverted at a removal point and returned via a return point and/or charge air, having a heat exchanger arranged between the removal point and the return point, for the returned exhaust gas and/or the charge air, and having an exhaust gas recirculation valve, by means of which the amount of returned exhaust gas and/or charge air can be regulated. To provide an exhaust gas recirculation system, which has a simple structure and can be manufactured cost-effectively, the exhaust gas recirculation valve is connectable between the removal point and the heat exchanger.

Abstract: The invention relates to a cooler arrangement for a drive train (21) in a motor vehicle (23). Said cooler arrangement comprises a first coolant circuit (3) with a first coolant cooler (7) as well as a second coolant circuit (5) with a second coolant cooler (9). The invention is characterized in that there is a connection between the first coolant circuit (3) and the second coolant circuit (5).

Abstract: In an internal combustion engine having a system for utilizing the waste heat from the internal combustion engine via the Clausius-Rankine cycle, a system includes a circuit having lines with a working medium, a working medium pump, a vaporizer-exhaust gas heat exchanger, and a vaporizer-EGR heat exchanger, an expander, and a condenser for liquefying the vaporous working medium. The line for the working medium is run from the condenser to the vaporizer-EGR heat exchanger so that the working medium, after flowing through the condenser, first flows through the vaporizer-EGR heat exchanger, and the line for the working medium is run from the vaporizer-EGR heat exchanger to the vaporizer-exhaust gas heat exchanger so that the working medium, after flowing through the vaporizer-EGR heat exchanger, first flows through the vaporizer-exhaust gas heat exchanger.

Abstract: A charging fluid suctions module is provided for an internal combustion engine, comprising a housing forming a flow path for a gaseous charging fluid, particularly air, a gas, and/or an air/gas mixture. Whereby, a heat exchanger is disposed in the housing for the gaseous charging fluid. In order to allow for an improved exhaust gas return the housing comprise an inlet channel for an exhaust gas, and the inlet channel flows into the flow path downstream of the heat exchanger for the gaseous charging fluid.

Abstract: An exhaust gas recirculation system is provided that includes an internal combustion engine, which is supplied with exhaust gas, diverted at a removal point and returned via a return point and/or charge air, having a heat exchanger arranged between the removal point and the return point, for the returned exhaust gas and/or the charge air, and having an exhaust gas recirculation valve, by means of which the amount of returned exhaust gas and/or charge air can be regulated. To provide an exhaust gas recirculation system, which has a simple structure and can be manufactured cost-effectively, the exhaust gas recirculation valve is connectable between the removal point and the heat exchanger.

Abstract: An exhaust gas installation is provided that comprises an exhaust gas evaporator mounted downstream of an internal combustion engine of a motor vehicle. The exhaust gas evaporator has a sandwich-type structure wherein exhaust gas planes and coolant planes are alternately directly adjacently arranged, providing a very compact while very efficient exhaust gas evaporator.

Abstract: A device for the exchange of heat between a first and a second medium with pairs of trays stacked one on top of the other in a stacking direction is provided, wherein a first flow chamber that can be flowed through by a first medium is provided between the two trays of at least one pair of trays or several pairs of trays and a second flow chamber that can be flowed through by a second medium is provided between two pairs of trays adjacent to one another, wherein the first flow chamber has first flow path with flow path sections that can be flowed through consecutively in opposite directions for the first medium, which are separated from one another by a division wall arranged between the at least two trays of the at least one pair of trays, and wherein the second flow chamber has a second flow path for the second medium.

Abstract: Disclosed is an intake pipe for a combustion engine, comprising a housing (1) with a supply duct (2) for especially compressed air, a heat exchanger (8) which is disposed within a main duct (4) in the housing (1) and through which the air can flow in order to exchange heat with a fluid, and a bypass duct (5) that is separated from the main duct (4) in at least some sections and is fitted with at least one positioning element (7) to allow the fed air to adjustably bypass the heat exchanger (8). An end of the bypass duct (5) on the engine side is placed at a still flow-relevant short distance from an opening (11) of an intake valve (10) of the combustion engine.

Abstract: The invention relates to a circuit arrangement (K), with a low-temperature coolant circuit (1) for the cooling of charge air on a motor vehicle with a charging device, comprising a charge air/coolant cooler (2). A temperature sensor (4) is provided at the exit of the coolant from the charge air/coolant (2), or directly thereafter, for the measurement of the coolant exit temperature. The invention further relates to a method for operation of such a circuit arrangement (K).

Abstract: An apparatus for returning exhaust gas of an internal combustion engine is provided. The apparatus includes a compressor that is driven by exhaust gas, wherein an exhaust-gas flow enters into the compressor on a high-pressure side and exits the compressor on a low-pressure side. A branch is provided on the high-pressure side with regard to the compressor for returned exhaust gas, and at least one exhaust-gas cooler is provided for transferring heat out of the branched-off exhaust-gas flow into a cooling medium. A heat exchanger is provided, via which heat can be transferred between the exhaust-gas flow, which branches off on the high-pressure side, and an exhaust-gas flow on the low-pressure side with regard to the compressor.

Abstract: A device for regulating an air flow for engine cooling, is disclosed herein with a fan element arranged over part of a heat exchanger face which can be traversed by air, and a covering element over a further part of the exchanger face, the covering element extending from the fan element up to an end of the exchanger face, and able to be at least partially selectively opened to allow air to flow through. A device providing an improved efficiency of the heat exchanger in at least one operating state of a motor vehicle is provided that is possible for a first opening section, which, in order to avoid excessive recirculation, is at a minimum distance from the fan element, the covering element is selectively opened and it is possible for at least one second opening section which substantially adjoins the fan element to be selectively opened.

Abstract: The invention relates to a cooler arrangement for a drive train (21) in a motor vehicle (23). Said cooler arrangement comprises a first coolant circuit (3) with a first coolant cooler (7) as well as a second coolant circuit (5) with a second coolant cooler (9). The invention is characterized in that there is a connection between the first coolant circuit (3) and the second coolant circuit (5).