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:
Dec. 23, 2014
Filed:
Apr. 21, 2010
Andreas Genssle, Musberg, DE;
Enno Baars, Leonberg, DE;
Markus Eitel, Stuttgart, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The invention relates to a method for monitoring a sensor unit () that is arranged in the exhaust gas region of an internal combustion engine (). According to the invention, a sensor temperature () is directly or indirectly determined by the sensor unit (), and is compared to an exhaust temperature () that is determined by a further sensor unit and/or to model variables and/or to defined threshold values, whereby a dismounting and/or an inappropriate mounting of the sensor unit is indicated. The invention further relates to a device for monitoring a sensor unit () arranged in an exhaust region of an internal combustion engine (), the sensor unit being used to directly or indirectly determine a sensor temperature () which can be compared to an exhaust temperature () that is determined by a further sensor unit and/or to model variables and/or to defined threshold values in an engine control unit (), wherein a malfunction entry and/or a warning signal can be derived from said comparison.