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, 2004
Filed:
Aug. 09, 2002
Hermann Hahn, Hannover, DE;
Sören Hinze, Braunschweig, DE;
Volkswagen Aktiengesellschaft, Wolfsburg, DE;
Abstract
The invention relates to a method for controlling a NO storage catalyst by means of a NO -sensitive measuring device, especially a NO sensor, that is arranged downstream in relation to the NO storage catalyst which is arranged in an exhaust gas channel of a combustion engine. According to the invention, a reference time (t ) is determined by means of a signal path of the NO -sensitive measuring device ( ) after the combustion engine ( ) has been switched into a lean operating mode. Said reference time is used as the timely starting point for controlling processes being related to the NO storage catalyst ( ). The invention also relates to a device for carrying out the method. According to said device, means are provided by means of which the following procedure steps can be carried out: determining a reference time (t ) by means of a signal path (SV) of the NO -sensitive measuring device ( ) after regeneration of the NO storage catalyst ( ) and using the reference time (t ) as the timely starting point for controlling processes of the NO storage catalyst ( ).