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. 03, 2024
Filed:
Dec. 23, 2020
Robert Bosch Gmbh, Stuttgart, DE;
Helerson Kemmer, Vaihingen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The invention relates to a method for opening a valve assembly for a fuel tank, comprising a pilot valve (V) and at least one additional valve (V), in particular for use in a fuel cell-operated vehicle, having the steps of applying () an amplification voltage (S) in order to open the pilot valve (V) in an opening phase (P) of the pilot valve (V), deactivating () the amplification voltage (S) in order to terminate the opening phase (P) of the pilot valve (V), applying () a pull-in voltage (S) in a pull-in phase (P) of the pilot valve (V) in order to hold the pilot valve (V) open, and activating and deactivating () the pull-in voltage (S) in an alternating manner in order to hold the pilot valve (V) open and in order to open the at least one other valve (V) and hold same open in a readjustment phase (P) such that the hold-open energy required on average for holding the pilot valve (V) open and the opening energy and/or hold-open energy required on average for the at least one other valve (V) is provided.