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:
Aug. 16, 2005
Filed:
Jan. 12, 2001
Hermann Hahn, Hannover, DE;
Sören Hinze, Braunschweig, DE;
Hermann Hahn, Hannover, DE;
Sören Hinze, Braunschweig, DE;
Volkswagen Atkiengesellschaft, Wolfsburg, DE;
Abstract
The invention relates to a method and device for controlling the NOregeneration of a NOstorage catalyst () disposed in the exhaust gas train () of an internal combustion engine () of a motor vehicle. The NOregeneration is at least initiated when a threshold value is exceeded for a load state of a NOstorage catalyst () or a NOemission downstream from the NOstorage catalyst (). According to the invention, it is detected (a) whether the internal combustion engine () is idling and (b) alternately or in any possible combination, the threshold value for the load state or the NOemission is increased; the NOregeneration is only initiated after a specific amount of time has elapsed and a current NOregeneration is interrupted when a shift occurs into an idling mode.