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. 07, 2005
Filed:
Jun. 23, 2000
Axel Lang, Wolfenbüttel, DE;
Axel Wachtendorf, Hude, DE;
Uwe Kammann, Warberg, DE;
Harald Loeck, Wolfsburg, DE;
Rudolf Krebs, Wendeburg, DE;
Michael Daetz, Tiddische, DE;
Frank Michael Wittig, Braunschweig, DE;
Axel König, Wolfsburg, DE;
Axel Lang, Wolfenbüttel, DE;
Axel Wachtendorf, Hude, DE;
Uwe Kammann, Warberg, DE;
Harald Loeck, Wolfsburg, DE;
Rudolf Krebs, Wendeburg, DE;
Michael Daetz, Tiddische, DE;
Frank Michael Wittig, Braunschweig, DE;
Axel König, Wolfsburg, DE;
Volkswagen AG, , DE;
Abstract
A process for detecting a state of a catalyst system installed in an exhaust gas channel of an internal combustion engine of a motor vehicle, through which catalyst system exhaust gas from the internal combustion engine flows so that the exhaust gas can be purified, the process including the steps of: detecting at least one operating parameter of the catalyst system over a predetermined time period, determining a total energy output of the internal combustion engine within the predetermined time period, and calculating a characteristic value (k) based on a ratio of the at least one operating parameter to the total energy output.