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:
Oct. 06, 2020
Filed:
Oct. 26, 2017
Robert Bosch Gmbh, Stuttgart, DE;
Kersten Wehmeier, Ludwigsburg, DE;
Michael Pfeil, Marbach am Neckar, DE;
Michael Fey, Wiernsheim, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The invention relates to a method for adjusting a fuel/air ratio of an internal combustion engine (), comprising a catalyst volume () with a first catalyst partial volume () and a second catalyst partial volume (). The second catalyst partial volume () is arranged downstream from the first catalyst partial volume (). An actual filling level of an exhaust gas constituent in the catalyst volume () is calculated from operating parameters of the internal combustion engine () and the exhaust system () using a computing model, and is adjusted to a nominal value by modifying the fuel/air ratio. The adjustment is carried out first for the second catalyst partial volume () and only later for the first catalyst partial volume ().