Mahle International Gmbh

M Ahle International Gm Bh

Matthias Schmid

Ulrich Maucher

Steffen Ensminger

Eberhard Pantow

Claudia Lang

Jürgen Barwig

Timo Peifer

Jürgen Steimer

Juergen Barwig

A heat exchanger, in particular exhaust-gas cooler, is described herein. The heat exchanger includes tubes of unipartite form or formed from two plates. The tubes form a first and a second fluid duct, and the respective fluid ducts are arranged adjacent to one another. The first fluid duct is designed to be open at at least one of its ends for the inflow and/or outflow of a first fluid. The second fluid ducts are closed at an end side of the tubes by way of an inward or outward step. The step has a greater extent T in the tube longitudinal direction in the corner regions of the tube than between the corner regions. Several non-limiting descriptive embodiments are disclosed herein.

Plate type heat exchanger for exhaust gas

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.

Heat exchanger

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.

A heat exchanger, in particular an exhaust gas cooler or charge air cooler, is provided that includes a plate stack which has a plurality of elongated plate pairs, each set of two interconnected plates forming a respective second fluid channel between themselves, and a first fluid channel being formed between two plate pairs, a first fluid channel being surrounded by two second fluid channels, each second fluid channel being connected to at least one manifold.

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Stuttgart, Germany

Matthias Schmid