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:
Sep. 02, 2025
Filed:
Oct. 13, 2020
Robert Bosch Gmbh, Stuttgart, DE;
Helerson Kemmer, Vaihingen, DE;
Ingo Brauer, Vaihingen, DE;
Felix Guenther, Stuttgart, DE;
Michael Schmidt, Weinstadt, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The invention relates to a method for operating a fuel cell system (), in particular a PEM fuel cell system, in which at least one fuel cell () is supplied with a hydrogen-containing anode gas via an anode gas path () and anode gas exiting the fuel cell () is returned via a recirculation path (), wherein, in order to reduce a nitrogen content in the anode gas, a flush valve () arranged in the recirculation path () is opened and the recirculation path () is flushed. According to the invention, the hydrogen content of the anode gas is determined using at least one sensor () and used as a control variable when controlling the flushing of the recirculation path (). The invention also relates to a control device () for carrying out the method according to the invention.