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:
Mar. 29, 2005
Filed:
Mar. 24, 2000
Walter Boegner, Remseck, DE;
Martin Hartweg, Erbach, DE;
Brigitte Konrad, Blaustein, DE;
Bernd Krutzsch, Denkendorf, DE;
Michel Weibel, Bernsteinstrasse, DE;
Guenter Wenninger, Stuttgart, DE;
Walter Boegner, Remseck, DE;
Martin Hartweg, Erbach, DE;
Brigitte Konrad, Blaustein, DE;
Bernd Krutzsch, Denkendorf, DE;
Michel Weibel, Bernsteinstrasse, DE;
Guenter Wenninger, Stuttgart, DE;
DaimlerChrysler AG, Stuttgart, DE;
Abstract
An exhaust-gas cleaning system for cleaning exhaust gas from a combustion source so as to remove at least nitrogen oxides contained therein is provided. An ammonia-generation catalytic converter for generating ammonia uses constituents of at least some of the exhaust gas emitted from the combustion source during ammonia-generation operating phases. A downstream nitrogen oxide reduction catalytic converter is provided for reducing nitrogen oxides which are contained in the exhaust gas emitted from the combustion source using the ammonia generated as the reducing agent. According to the invention, a plasma generator for using plasma technology to generate reactive particles, which promote the ammonia-generation reaction, from constituents of the exhaust gas fed to the ammonia-generation catalytic converter during the ammonia-generation operating phases is connected upstream of the ammonia-generation catalytic converter. This ensures that sufficient ammonia is generated even at relatively low exhaust-gas temperatures.