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:
Apr. 19, 2016
Filed:
Dec. 12, 2013
Ford Global Technologies, Llc, Dearborn, MI (US);
Khizer Tufail, London, GB;
Mark Stephen Brogan, Duxford, GB;
Haiwen Song, Laindon, GB;
Martin John Ledger, Romford, GB;
Peter Graham Eastwood, Laindon, GB;
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
A method of operating a diesel enginehaving LNTand SCRaftertreatment devices arranged in series to receive exhaust gas from the engine is disclosed in which the engine is operated in a rich early injection mode to generate ammonia in the LNT for storage in the SCR located downstream from the LNT. This reduces the amount of soot produced permitting longer operation of the engine in rich early injection mode and further may reduce the use of PGM material in the LNT and increase the amount of ammonia for use in the SCR.