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. 08, 2010
Filed:
Nov. 14, 2006
Markus Gloeckle, Stuttgart, DE;
Markus Gloeckle, Stuttgart, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
Methods of reducing agent control in an exhaust gas aftertreatment system of a combustion engine with an exhaust gas pipe in which in the direction of flow of the exhaust gas there is an SCR catalyzer. A reducing agent generating system has an NOand CO/Hgenerating unit, an oxidation catalyzer, and a combined NOstorage/ammonia generating unit in the standard gas path of the reducing agent generating system. Ammonia is introduced as a reducing agent for the reduction of nitric oxides before the SCR catalyzer of the reducing agent generating system. Precursor materials for generation of ammonia are directed at least temporarily to the NOand CO/Hgenerating unit through a fuel feed and an air feed. A CO/Hreducing agent stream is temporally modulated during a rich phase. A CO/Hconcentration is primarily held constant at a high level.