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:
Nov. 18, 2025
Filed:
Jun. 14, 2023
Bayerische Motoren Werke Aktiengesellschaft, Munich, DE;
Gert Barnstedt, Behamberg, AT;
Michael Maurer, Ottensheim, AT;
Lukas Stoeger, St. Peter in der Au, AT;
Bayerische Motoren Werke Aktiengesellschaft, Munich, DE;
Abstract
A method for operating an exhaust system includes supplying exhaust gas to a first SCR catalytic converter. The method relates to a cold start, wherein a prior operating state of the first SCR catalytic converter existing prior to the cold start ascertained by a computer is considered. Aside from a water quantity that was adsorbed on the first SCR catalytic converter prior to the cold start, a reducing agent quantity that was adsorbed on the first SCR catalytic converter prior to the cold start, which quantity is assigned to the prior operating state is also taken into consideration to determine an actual reducing agent quantity on the first SCR catalytic converter. A compensation reducing agent quantity is metered as required and characterizes a differential value between a setpoint quantity and the actual reducing agent quantity, and being admixed to the exhaust gas upstream of the first SCR catalytic converter.