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:
Jan. 10, 2023
Filed:
Jan. 15, 2018
Scania Cv Ab, Södertälje, SE;
Mikael Lundström, Hägersten, SE;
Scania CV AB, Södertälje, SE;
Abstract
A method that determines a cause for the impaired performance of a catalytic configuration of the exhaust gas of a combustion engine (), the method including determining (s) a course of a NOx-conversion ratio; determining (s) a prevailing temperature of the catalytic configuration; increasing (s) the temperature of the catalytic configuration from a prevailing temperature below a predetermined temperature value (Te) to a temperature (TSred) above the predetermined temperature value above which sulphur is removed from the catalytic configuration; and/or decreasing (s) the temperature of the catalytic configuration from a prevailing temperature (TSred) above the predetermined temperature value (Te) to a temperature below the predetermined temperature value so as to impair the performance of the catalytic configuration in case sulphur is present; and determining (s) one cause out of a set of causes on the basis of the course of the NOx-conversion ratio thus determined.