The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 17, 2009
Filed:
Sep. 24, 2007
Rolf Brück, Bergisch Gladbach, DE;
Andreas Scheeder, Siegburg, DE;
Peter Geskes, Ostfildern, DE;
Ulrich Maucher, Korntal-Münchingen, DE;
Jens Ruckwied, Stuttgart, DE;
Rolf Brück, Bergisch Gladbach, DE;
Andreas Scheeder, Siegburg, DE;
Peter Geskes, Ostfildern, DE;
Ulrich Maucher, Korntal-Münchingen, DE;
Jens Ruckwied, Stuttgart, DE;
Emitec Geseelschaft fur Emissionstechnologie MBH, Lohmar, DE;
Behr GmbH & Co. KG, Stuttgart, DE;
Abstract
An exhaust gas system for an internal combustion engine includes an intake system and an exhaust outlet interconnected by an exhaust gas recirculation line having an exhaust treatment unit and a heat exchanger. The heat exchanger has a first back pressure and the exhaust treatment unit has a second back pressure, smaller than the first back pressure. The exhaust treatment unit is disposed at such a first distance from the heat exchanger in flow direction that, during operation, a gas flow entering the exhaust treatment unit is homogenized. The exhaust gas system permits an advantageous configuration of a heat exchanger and an exhaust treatment unit, such as for example a honeycomb body in the exhaust gas recirculation line, in which both the heat exchanger and the exhaust treatment unit can have a smaller structure than in conventional systems. This reduces costs considerably for equipping such a system.