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:
Oct. 16, 2012
Filed:
May. 18, 2009
Bodo Odendall, Lenting, DE;
Stefan Rosenberger, Ingolstadt, DE;
Torsten Knebel, Ismaning, DE;
Martin Schneider, Pietenfeld, DE;
Bodo Odendall, Lenting, DE;
Stefan Rosenberger, Ingolstadt, DE;
Torsten Knebel, Ismaning, DE;
Martin Schneider, Pietenfeld, DE;
Audi AG, Ingolstadt, DE;
Abstract
In a change from a lean to a rich exhaust gas mixture, a characteristic behavior appears in a short time interval in the vicinity of the lambda jump of an upstream catalytic converter lambda probe in the signal characteristic which is measured by a downstream catalytic converter lambda probe. From the signals in small intervals, around the instant of changing, the reliability performance of the downstream lambda probe can be deduced without the actual probe jump in curves of the voltage characteristics having to be considered.