[MAUCHER ULRICH, BARWIG JUERGEN, ENSMINGER STEFFEN, PANTOW EBERHARD, LANG CLAUDIA, SCHMID MATTHIAS, PEIFER TIMO, STEIMER JUERGEN] DE The present invention relates to a heat exchanger which includes a disc laminate (2) including multiple long disc pairs (32) and, more specifically, to an exhaust gas cooler or a supercharge air cooler. Two coupled discs (18, 18′) form a first fluid channel (4) therebetween. A second fluid channel (30) is formed between two pairs of discs. The discs in one pair of discs are formed in a U-shape having a bottom and upright side walls and are placed to overlap each other to restrict the first fluid channel. One disc in one pair of discs includes a lug on the front face thereof. The lug is used to bend an edge thereof while surrounding the front face of the other disc. A process of bending the edge of the lug is performed on the bottom of the disc, and the process of bending the edge of the lug is performed up to the side walls of the discs.

[MAUCHER ULRICH, BARWIG JUERGEN, ENSMINGER STEFFEN, PANTOW EBERHARD, LANG CLAUDIA, SCHMID MATTHIAS, PEIFER TIMO, STEIMER JUERGEN] DE The present invention relates to a heat exchanger which includes a disc laminate (2) including multiple long disc pairs (32) and, more specifically, to an exhaust gas cooler or a supercharge air cooler. Two coupled discs (18, 18′) form a first fluid channel (4) therebetween. A second fluid channel (30) is formed between two pairs of discs. The discs in one pair of discs are formed in a U-shape having a bottom and upright side walls and are placed to overlap each other to restrict the first fluid channel. One disc in one pair of discs includes a lug on the front face thereof. The lug is used to bend an edge thereof while surrounding the front face of the other disc. A process of bending the edge of the lug is performed on the bottom of the disc, and the process of bending the edge of the lug is performed up to the side walls of the discs.

[JUERGEN BARWIG, MATTHIAS SCHMID, STEFFEN ENSMINGER, ULRICH MAUCHER] DE

[MAUCHER ULRICH, RUCKWIED JENS, BARWIG JUERGEN, ABLITZER FREDERIC, FETZER TOBIAS] DE

[GESKES PETER, BARWIG JUERGEN, RUCKWIED JENS, FETZER TOBIAS] DE

[Peter Geskes, Juergen Barwig, Jens Ruckwied] DE Stuttgart The invention relates to a heat exchanger, particularly for a motor vehicle, comprising at least one duct (24-29) through which a fluid flows and of which at least some section have a curved shape. Preferably, said heat exchanger comprises several ducts through which a fluid flows and of which at least some sections have a curved shape. In order to increase the heat exchanging capacity, the duct (24-29) of which at least some sections have a curved shape is provided inside a profiled extruded element.

[Juergen Barwig, Michael Schmidt] DE Stuttgart A corrugated rib structure for a heat exchanger may include wave-shaped wave crests and wave troughs running in a through-flow direction, and which may be connected with one another via wave-shaped walls running in the through-flow direction; and inwardly flared fins provided in at least one of: (i) the wave crests, and (ii) the wave troughs.

[Michael Schmidt, Ulrich Maucher, Juergen Barwig, Tobias Fetzer, Hans-Ulrich Steurer, Peter Geskes, Jens Ruckwied] DE Bietigheim-Bissingen A heat exchanger, particularly an exhaust gas heat exchanger, for transferring heat in two stages between a first fluid and second and third fluids that have different temperatures includes a block for separately conducting the first and second and third fluids in a heat transferring manner. The block encompasses a number of ducts through which the first fluid can flow, a first chamber of a high-temperature part through which the second fluid can flow and which accommodates the ducts, a second chamber of a low-temperature part through which the third fluid flows and which accommodates the ducts, and a housing in which the first and second chamber as well as the ducts are arranged. The first chamber and the second chamber are separated from one another by a separation area that is mounted in a groove.

[BARWIG JUERGEN, CZEMMEL HEINZ, DOMES CHRISTIAN, GESKES PETER, RUCKWIED JENS, SCHLEIER GERD, SPITZNAGEL BERND] DE

[BARWIG JUERGEN, ENSMINGER STEFFEN, MAUCHER ULRICH, SCHMID MATTHIAS] DE