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:
Oct. 30, 2012
Filed:
Sep. 09, 2010
Brigitte Bandl-konrad, Goeppingen, DE;
Andreas Hertzberg, Markgroeningen, DE;
Bernd Krutzsch, Denkendorf, DE;
Arno Nolte, Stuttgart, DE;
Markus Paule, Korb, DE;
Stefan Renfftlen, Eislingen, DE;
Norbert Waldbuesser, Stuttgart, DE;
Michel Weibel, Stuttgart, DE;
Guenter Wenninger, Stuttgart, DE;
Rolf Wunsch, Malsch, DE;
Brigitte Bandl-Konrad, Goeppingen, DE;
Andreas Hertzberg, Markgroeningen, DE;
Bernd Krutzsch, Denkendorf, DE;
Arno Nolte, Stuttgart, DE;
Markus Paule, Korb, DE;
Stefan Renfftlen, Eislingen, DE;
Norbert Waldbuesser, Stuttgart, DE;
Michel Weibel, Stuttgart, DE;
Guenter Wenninger, Stuttgart, DE;
Rolf Wunsch, Malsch, DE;
Daimler AG, Stuttgart, DE;
Abstract
An exhaust gas aftertreatment installment and associated exhaust gas aftertreatment method utilizes a nitrogen oxide storage catalytic converter and an SCR catalytic converter. A particulate filter is provided upstream of the nitrogen oxide storage catalytic converter or between the latter and the SCR catalytic converter or downstream of the SCR catalytic converter. The time of regeneration operating phases of the nitrogen oxide storage catalytic converter can be determined as a function of the nitrogen oxide content of the exhaust gas downstream of the nitrogen oxide storage catalytic converter or of the SCR catalytic converter and/or as a function of the ammonia loading of the latter. Moreover, a desired ammonia generation quantity can be determined for a respective regeneration operating phase. The installation and method are adopted for use for motor vehicle internal combustion engines and other engines which are operated predominantly in lean-burn mode.