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.

Date of Patent:
Aug. 25, 2026

Filed:

Sep. 26, 2022
Applicant:

Mercedes-benz Group Ag, Stuttgart, DE;

Inventors:

Siegfried Mueller, Ingersheim, DE;

Michael Heinrichsmeyer, Steinheim, DE;

Heiko Beil, Stuttgart, DE;

Christian Dominik Ladwig, Stuttgart, DE;

Assignee:

Mercedes-Benz Group AG, Stuttgart, DE;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01N 3/20 (2006.01); F01N 3/10 (2006.01);
U.S. Cl.
CPC ...
F01N 3/208 (2013.01); F01N 3/103 (2013.01); F01N 3/2033 (2013.01); F01N 3/2066 (2013.01); F01N 2240/16 (2013.01); F01N 2900/1602 (2013.01);
Abstract

A method for operating an exhaust gas post-treatment device for an internal combustion engine. The exhaust gas post-treatment device has an oxidation catalyst having a catalytic coating, a heating element upstream of the oxidation catalyst or a heating element provided with the catalytic coating with which heat energy can be introduced actively into the exhaust system at a heating point. The exhaust gas post-treatment device further has a dosing element with which a reducing agent can be introduced into the exhaust gas at an introduction point arranged downstream of the oxidation catalyst and has an SCR system arranged downstream of the introduction point. The method provides checking whether target temperatures have been reached in the exhaust gas system. If the target temperatures are fallen short of, the target temperatures can be reached within a defined period of time by using the heating element and by carrying out a post-injection.


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