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. 08, 2023
Filed:
Jul. 08, 2020
Robert Bosch Gmbh, Stuttgart, DE;
Johannes Georg Mueller, Ludwigsburg, DE;
Roland Waschler, Stuttgart, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The invention proposes a method for operating a metering system () with a plurality of metering valves () for an SCR catalyst system, in which opening times for the injection of reducing agent are calculated for the metering valves () based on a metering amount requirement. In the calculations of the opening times, a metering-valve-specific adaptation factor is used, w herein a deviation (Δp) of a system pressure (p) in the metering system () from a target pressure (p) and a weighting factor are used for calculation of the metering-valve-specific adaptation factor. The weighting factor depends on a proportion (r, r) of the required metering amount ((formula (I)), (formula (II)) of the respective metering valve () in relation to a total metering amount ((formula (I)), (formula (II)) of all metering valves ().