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:
Jan. 30, 2018
Filed:
May. 21, 2014
Robert Bosch Gmbh, Stuttgart, DE;
Benjamin Gaertner, Neureut, DE;
Andy Tiefenbach, Vaihingen-Horrheim, DE;
Mathias Klenk, Tuebingen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The invention relates to a particle sensor () for determining a particle content in a gas flow, wherein the particle sensor () has, on the surface thereof, at least two interlocking interdigital IDE electrodes () and a heating element (), separated from the IDE electrodes () by an insulating layer (), by means of which heating element the particle sensor () can be heated in a regeneration phase and a soot load on the particle sensor can thus be removed, and by means of which particle sensor, in a diagnostic phase during the regeneration phase, a current is measured by intermittently applying a measurement voltage to the IDE electrodes () and, based on the chronological progression and size thereof, a functional inspection of the particle sensor () is carried out. During the regeneration phase, additional operating phases are introduced, in which, outside of the diagnostic phase (), ions are specifically moved by intermittently applying specific voltage potentials different from zero volts to the IDE electrodes ().