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:
Aug. 04, 2015
Filed:
Oct. 21, 2010
Patrice Keghelian, Lyons, FR;
Damien Brunel, Vaulx en Velin, FR;
Patrice Keghelian, Lyons, FR;
Damien Brunel, Vaulx en Velin, FR;
Volvo Trucks AB, Gothenburg, SE;
Abstract
A method is provided for detecting urea deposits in an exhaust line of an automotive vehicle and includes determination if an exhaust gas's temperature is reached, if the result of determination is positive, stoppage of urea injection, and determination of the quantity of NOx in the exhaust gases on the outlet of the selective catalytic reduction system. A comparison is performed between the quantity of NOx determined on the outlet of the selective catalytic reduction system and a theoretical quantity or a measured quantity of NOx produced by the internal combustion engine. If the comparison shows that the quantities are different, it is considered that urea deposits are present in the exhaust line. A vehicle is also disclosed.