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:
Jun. 15, 2010
Filed:
Feb. 04, 2005
Martin Votsmeier, Maintal, DE;
Juliane Kluge, München, DE;
Ulrich Goebel, Hattersheim, DE;
Jürgen Gieshoff, Gelnhausen, DE;
Thomas Kreuzer, Karben, DE;
Martin Votsmeier, Maintal, DE;
Juliane Kluge, München, DE;
Ulrich Goebel, Hattersheim, DE;
Jürgen Gieshoff, Gelnhausen, DE;
Thomas Kreuzer, Karben, DE;
Umicor AG & Co. KG, Hanau-Wolfgang, DE;
Abstract
When a nitrogen oxide storage catalyst is being regenerated, the regeneration may be terminated for example as a result of a premature load change in the engine, which can lead to incomplete emptying of the storage catalyst. The residual filling level which remains in the catalyst following an incomplete regeneration of this nature is used as the starting value for calculation of the filling level during the next storage phase. After incomplete regeneration, the nitrogen oxide conversion rate is initially greater than would be expected, on account of the residual filling level. By taking this increased conversion rate into account when calculating the filling level during the storage phase, it is possible to further improve the accuracy of the calculation.