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. 07, 2025
Filed:
Dec. 07, 2023
Robert Bosch Gmbh, Stuttgart, DE;
Thomas Zein, Sindelfingen, DE;
Yunjie Lian, Markgroeningen, DE;
Frank Meier, Stuttgart, DE;
Gunther Kegel, Rutesheim, DE;
ROBERT BOSCH GMBH, Stuttgart, DE;
Abstract
A method for determining a nitrogen oxide emission and an ammonia emission in the combustion exhaust gas of an engine system having an exhaust-gas-guided internal combustion engine using an output-side nitrogen oxide sensor having a cross-sensitivity to ammonia. The method including: detecting a measurement signal of the nitrogen oxide sensor; ascertaining a partial conversion indication for each of multiple catalytic converter segments arranged in series in the combustion exhaust gas depending on local operating conditions with the aid of a provided conversion model that maps a local operating condition on the partial conversion indication; determining a conversion indication from the multiple partial conversion indications; and ascertaining a nitrogen oxide emission and an ammonia emission depending on the measurement signal and the conversion indication.