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:
Sep. 05, 2000
Filed:
Mar. 23, 1998
Paul Kueper, Wiernsheim, DE;
Wulf Sebbesse, Munich, DE;
Roland Huss, Esslingen, DE;
Alf Degen, Friolzheim, DE;
Dr. Ing. h.c.F. Porsche AG, Weissach, DE;
Bayerische Motoren Werke Aktiengesellschaft, Munich, DE;
DaimlerChrysler AG, Stuttgart, DE;
Volkswagen Aktiengesellschaft, Wolfsburg, DE;
Abstract
A combination of an adsorbent with a catalyst for internal combustion engines. The adsorbent-catalyst combination is built up in two or more alternating layers of zones, which are coated to be adsorbing, and zones, which are coated to have catalytic activity, and are connected in series in relation to the flow of exhaust gas. The zones having adsorbing activity are to be designed thermodynamically so that they have a lesser heat transfer than the zones having catalytic activity, so that the zones having catalytic activity have a higher support temperature than the upstream zones having adsorbing activity.