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:
Aug. 05, 2014
Filed:
Aug. 05, 2010
Sabine Roesch, Ditzingen, DE;
Benjamin Gaertner, Neureut, DE;
Johannes Grabis, Renningen, DE;
Alexander Hetznecker, Karlsruhe, DE;
Thorsten Ochs, Schwieberdingen, DE;
Henrik Schittenhelm, Stuttgart, DE;
Sabine Roesch, Ditzingen, DE;
Benjamin Gaertner, Neureut, DE;
Johannes Grabis, Renningen, DE;
Alexander Hetznecker, Karlsruhe, DE;
Thorsten Ochs, Schwieberdingen, DE;
Henrik Schittenhelm, Stuttgart, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
Self-diagnosis of a particle sensor may be used for determining a particle content in a gaseous stream. The particle sensor may include at least two interlocking, interdigital electrodes and a heating element. The heating element may be separated from the electrodes by an insulation layer. The particle sensor may be heated in a regeneration phase and a soot load on the particle sensor can thereby be removed. A semiconductive layer may be formed in the insulation layer directly beneath the electrodes by means of external doping or auto-doping. To perform a self-diagnosis, a measurement voltage may be applied at least periodically between the electrodes and a self-diagnostic current may be measured.