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. 16, 2010
Filed:
Nov. 20, 2006
Norbert Breuer, Ditzingen, DE;
Stefan Woerz, Vaihingen/Enz, DE;
Andreas Genssle, Musberg, DE;
Peter Riegger, Stuttgart, DE;
Franz-josef Trompeter, Freiberg A.N., DE;
Thomas Hauber, Altbach, DE;
Markus Hernier, Gerlingen, DE;
Ralf Wegst, Gaggenau, DE;
Thorsten Raatz, Schwieberdingen, DE;
Norbert Breuer, Ditzingen, DE;
Stefan Woerz, Vaihingen/Enz, DE;
Andreas Genssle, Musberg, DE;
Peter Riegger, Stuttgart, DE;
Franz-Josef Trompeter, Freiberg A.N., DE;
Thomas Hauber, Altbach, DE;
Markus Hernier, Gerlingen, DE;
Ralf Wegst, Gaggenau, DE;
Thorsten Raatz, Schwieberdingen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
Devices and methods for the production of ammonia as a reducing agent for the selective catalytic reduction (SCR) of nitrogen oxides in the exhaust gas of a combustion source, especially of an internal combustion engine. The ammonia is admixed with the exhaust gas in the direction of flow in front of a SCR-catalytic converter. In so doing, nitrogen oxide is produced in a nitrogen oxide production unit separated from the combustion source and its exhaust gas duct and is stored in at least one storage catalytic converter or a nitrogen oxide storage and a subsequently connected catalytic converter. Furthermore, hydrogen and/or a hydrogen-carbon monoxide-mixture is produced in a hydrogen production unit separated from the combustion source and its exhaust gas duct and delivered to a storage catalytic converter. Hydrogen and the stored nitrogen oxide are converted catalytically to ammonia in the storage catalytic converter or in the catalytic converter.