Eberspächer Exhaust Technology Gmbh & Co. Kg

J. Eberspaecher Gmbh & Co. Kg

Angela Hettel

Jörg Oesterle

Anika Bürkle

Ming Dong

Arnulf Spieth

Georg Wirth

Enver Kurpejovic

Ralf Riekers

A heat exchanger () for an exhaust system () of an internal combustion engine (), includes a heating tube () for carrying hot exhaust gas and a cooling tube () for carrying a liquid cooling agent. A thermoelectric generator () generates an electric voltage from a temperature difference and is arranged with the adjacent tubes in a stacking direction () to form a stack (). A support tube () is supported in the stacking direction on wall sections () of the respective tube (), which wall sections mutually face each other, and is arranged in the respective heating tube () and/or cooling tube (). Increased energy efficiency is achieved if at least two support tubes (), which differ from one another by tube length and/or tube end () and/or by tube cross sections, are arranged in the respective tube () at right angles to a longitudinal direction ().

Heat exchanger

The present invention relates to a heat transfer device, more preferably for an exhaust system of a combustion engine, preferentially of a motor vehicle, with at least one warm tube for conducting a fluid emitting heat, with at least one cold tube for conducting a fluid absorbing heat and with at least one thermoelectric generator for generating electric energy from a temperature difference, wherein a thermoelectric generator each is arranged between a warm tube and a cold tube. The efficiency of the heat transfer device is improved if the respective thermoelectric generator is in contact with the respective tube via a heat conducting material and if the respective heat conducting material is configured as shaped body.

Heat transfer device and manufacturing method

The present invention relates to a flange plate for connecting exhaust pipes to a combustion engine, with at least two connecting sockets integrally moulded on the flange plate, on each of which an exhaust pipe can be fastened, and with a plurality of through openings for fixing the flange plate to the combustion engine. Thermal expansion effects can be better compensated if at least one of the connecting sockets is formed in a connecting region, which is surrounded by a slit penetrating the flange plate, wherein the respective slit comprises at least one interruption and the respective connecting region in the region of the respective interruption is connected to the remaining flange plate.

Flange plate, flange connection and exhaust manifold

The present invention relates to an arrangement for the heat transfer between a tubular body suitable for conducting a fluid and a contact body that is in contact with said tubular body, wherein the contact body comprises a contact side facing the tubular body, with which the contact body is in contact with an outside of the tubular body facing the contact body, wherein in a tensioned state of the arrangement a preload force presses the contact body against the tubular body in a preload direction. A high heat transfer efficiency even over an operating temperature range can be achieved if the outside in an un-tensioned state of the arrangement is convexly curved towards the contact body, if the outside in the tensioned state is deformed relative to the un-tensioned state and bears against the contact side surface-to-surface, and if in the interior of the support body a support structure is arranged, which in the tensioned state supports itself on two inner sides of the tubular body located opposite each other in the preload direction.

Growing community of inventors

Leinfelden-Echterdingen, Germany

Angela Hettel