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:
May. 07, 2019
Filed:
Mar. 08, 2017
Applicant:
GM Global Technology Operations Llc, Detroit, MI (US);
Inventors:
Glenn Pietila, Howell, MI (US);
John Pierce, III, Huntington Woods, MI (US);
Gerald J. Clark, Birmingham, MI (US);
Assignee:
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N 3/021 (2006.01); F01N 9/00 (2006.01); F01N 11/00 (2006.01); F01N 13/08 (2010.01); F01N 13/00 (2010.01);
U.S. Cl.
CPC ...
F01N 13/082 (2013.01); F01N 3/021 (2013.01); F01N 9/002 (2013.01); F01N 11/00 (2013.01); F01N 13/011 (2014.06); F01N 2240/36 (2013.01); F01N 2260/14 (2013.01); F01N 2410/10 (2013.01); F01N 2900/0416 (2013.01); F01N 2900/1606 (2013.01); Y02T 10/20 (2013.01); Y02T 10/47 (2013.01);
Abstract
An exhaust system includes a particulate filter, a variable valve, and a controller communicatively connected to the variable valve. The controller is operative to determine a backpressure caused by the particulate filter in the exhaust system, and control a position of the variable valve as a function of the backpressure caused by the particulate filter.