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:
Oct. 22, 2013
Filed:
Jul. 11, 2011
Håkan Sarby, Huddinge, SE;
Håkan Sarby, Huddinge, SE;
Scania CV AB, , SE;
Abstract
An arrangement for controlling injection of a reducing agent in an exhaust line of a combustion engine (): An injection system (-) injects the reducing agent into the exhaust line (). A first catalyst () reduces the amount of nitrogen oxides in the exhaust gases in the exhaust line () using the reducing agent. A second catalyst () downstream of the first catalyst () in the exhaust line () converts ammonia in the exhaust gases to nitrogen gas and nitrous oxide. A nitrous oxide sensor () monitors the amount of nitrous oxide in the exhaust line () downstream of the second catalyst (). A control unit () of the injection system (-) adjusts the amount (q) of reducing agent injected into the exhaust line () if the sensor () detects that the amount of nitrous oxide is not within a selected range (A).