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:
Feb. 22, 2011
Filed:
Dec. 21, 2006
Erich Schneider, Kirchheim, DE;
Qiang Qiu, Ditzingen, DE;
Christoph Woll, Gerlingen, DE;
Peter Doebler, Bietigheim-Bissingen, DE;
Erich Schneider, Kirchheim, DE;
Qiang Qiu, Ditzingen, DE;
Christoph Woll, Gerlingen, DE;
Peter Doebler, Bietigheim-Bissingen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A procedure is introduced to diagnose a catalytic converter system with at least two catalytic converters, through which separate exhaust gas flows flow, with the steps: test if oxygen storage capacities of the catalytic converters, which are at least two in number, exceed a predetermined threshold value. The procedure characterizes itself, in that the oxygen storage capacity of the first of two catalytic converters is compared with at least one first threshold value, in that an additional threshold value is ascertained as a function of a result of the comparison and in that the oxygen storage capacity of the second of two catalytic converters is compared with the additional threshold value. Additionally a control device is introduced, which executes the procedure.