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:
Nov. 24, 2020
Filed:
May. 08, 2017
Applicant:
Robert Bosch Gmbh, Stuttgart, DE;
Inventors:
Eckehard Knoefler, Marbach, DE;
Torsten Handler, Stuttgart, DE;
Assignee:
Robert Bosch GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 27/419 (2006.01); F01N 11/00 (2006.01); G01N 27/417 (2006.01);
U.S. Cl.
CPC ...
G01N 27/4175 (2013.01); F01N 11/00 (2013.01); F01N 11/007 (2013.01); G01N 27/419 (2013.01); F01N 2550/00 (2013.01); F01N 2550/02 (2013.01); F01N 2560/026 (2013.01); Y02T 10/40 (2013.01);
Abstract
The invention relates to a method for monitoring a NOx sensor () having an oxygen-ion-conducting solid electrolyte and having at least one cavity (), wherein at least one cavity () of the NOx sensor is flooded with a defined oxygen concentration during a self-diagnosis of the NOx sensor. The gradient of a pump current resulting therefrom is evaluated and, in the case of a deviation in comparison with reference values, possibly impaired dynamics of the NOx sensor are inferred.