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:
Dec. 03, 2013
Filed:
Sep. 06, 2011
Thomas Nagel, Engelskirchen, DE;
Carsten Kruse, Troisdorf, DE;
Gerhard Kahmann, Wolfenbüttel, DE;
Thorsten Düsterdiek, Hannover, DE;
Thomas Nagel, Engelskirchen, DE;
Carsten Kruse, Troisdorf, DE;
Gerhard Kahmann, Wolfenbüttel, DE;
Thorsten Düsterdiek, Hannover, DE;
EMITEC Gesellschaft fuer Emissionstechnologie mbH, Lohmar, DE;
Abstract
A method for operating a device for the purification of exhaust gas of an internal combustion engine which is operated with an excess of air includes heating at least one heating apparatus of the device above a predetermined first setpoint temperature. The at least one heating apparatus is at least partially in contact with the exhaust gas, can be activated by electrical energy and is formed at least partially with an oxidation coating. At least the temperature of the at least one heating apparatus or of the exhaust gas is subsequently monitored. An increase in the hydrocarbon fraction of the exhaust gas is initiated if at least the temperature of the heating apparatus or of the exhaust gas has reached a threshold temperature or a low-load phase of the internal combustion engine is present. A motor vehicle having the device is also provided.