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:
Apr. 06, 2010
Filed:
Dec. 27, 2006
Stefan Wickert, Albershausen, DE;
Joerg Mosthaf, Muehlacker, DE;
Christian Fuchs, Stuttgart, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A method of controlling a reducing agent generation system of an internal combustion engine includes generating a reagent substance in a form of pulses and delivered to an exhaust gas duct of the internal combustion engine upstream of an SCR-catalytic converter for the selective catalytic reduction of the nitrogen oxides contained in an exhaust gas. A catalytic converter model is used to model a reagent substance fill level of the SCR-catalytic converter and a closed-loop feedback control system compares the modeled reagent substance fill level with a storage set point. A reagent substance demand signal is generated that at least releases a reagent substance pulse when a difference between the storage set point and the reagent substance fill level exceeds a specified threshold value.