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. 21, 2017
Filed:
Mar. 03, 2014
Scania Cv Ab, Södertälje, SE;
Andreas Liljestrand, Södertälje, SE;
SCANIA CV AB, , SE;
Abstract
A method for an SCR system comprising a dosing unit () for dosing reducing agent into an engine exhaust duct () upstream of a SCR catalytic converter () for reducing the NOx level in an exhaust flow from the engine. The SCR system comprises a pressurizing device () for feeding reducing agent from a container () to the dosing unit () arranged so as to dose reducing agent to the exhaust duct () under pressure. The method includes the step of: reducing, during periods of non-continuous dosing of reducing agent during continued maintained operation of the pressurizing device (), the pressure (s; s) of the reducing agent at the dosing unit () compared to the pressure during continuous dosing. Also a computer program product containing program code (P) for a computer () for implementing a method according to the invention. The invention also concerns an SCR system and a motor vehicle that is equipped with that system.