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. 22, 2019
Filed:
Jun. 22, 2016
Applicant:
GM Global Technology Operations Llc, Detroit, MI (US);
Inventor:
Andrea De Filippo, Turin, IT;
Assignee:
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N 3/035 (2006.01); F01N 3/20 (2006.01); F02D 41/00 (2006.01); F01N 9/00 (2006.01); F02M 26/05 (2016.01); F02M 26/06 (2016.01); F02D 41/02 (2006.01); F02D 41/14 (2006.01); F01N 3/08 (2006.01); F01N 13/00 (2010.01);
U.S. Cl.
CPC ...
F02D 41/0077 (2013.01); F01N 3/035 (2013.01); F01N 3/2066 (2013.01); F01N 9/002 (2013.01); F02D 41/0055 (2013.01); F02D 41/029 (2013.01); F02D 41/1446 (2013.01); F02M 26/05 (2016.02); F02M 26/06 (2016.02); F01N 3/0842 (2013.01); F01N 3/0885 (2013.01); F01N 13/009 (2014.06); F01N 2560/06 (2013.01); F01N 2560/08 (2013.01); F01N 2560/14 (2013.01); F01N 2610/02 (2013.01); F01N 2900/08 (2013.01); F01N 2900/1404 (2013.01); F02D 2200/101 (2013.01); Y02T 10/24 (2013.01); Y02T 10/47 (2013.01);
Abstract
A method is disclosed for operating a low pressure EGR valve in a low pressure EGR route of an internal combustion engine equipped with an aftertreatment system having a urea injector upstream of a Selective Catalytic Reduction on Filter (SCRF). During a regeneration procedure of the SCRF, an enabling condition is monitored for opening the low pressure EGR valve of the low pressure EGR route when enabling condition is satisfied. The enabling condition may be satisfied if a urea injection is not performed.