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:
Aug. 13, 2019
Filed:
Jul. 18, 2017
Applicant:
Ford Global Technologies, Llc, Dearborn, MI (US);
Inventors:
Michael James Uhrich, West Bloomfield, MI (US);
Joseph Norman Ulrey, Dearborn, MI (US);
Ross Dykstra Pursifull, Dearborn, MI (US);
Christopher Paul Glugla, Macomb, MI (US);
Emil G. Serban, Ann Arbor, MI (US);
Assignee:
Ford Global Technologies, LLC, Dearborn, MI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F01N 3/10 (2006.01); F01N 9/00 (2006.01); F01N 3/023 (2006.01); F02D 37/02 (2006.01); F02D 41/00 (2006.01); F02D 41/02 (2006.01); F02D 41/14 (2006.01); F02D 41/40 (2006.01);
U.S. Cl.
CPC ...
F01N 3/0234 (2013.01); F02D 37/02 (2013.01); F02D 41/029 (2013.01); F02D 41/0245 (2013.01); F02D 41/1448 (2013.01); F02D 41/405 (2013.01); F01N 3/101 (2013.01); F01N 9/002 (2013.01); F01N 2430/06 (2013.01); F01N 2430/08 (2013.01); F02D 41/0055 (2013.01); F02D 2200/0812 (2013.01);
Abstract
Methods and systems are provided for adjusting engine compression ratio (CR) and spark timing to attain particulate filter (PF) regeneration temperature. In one example, a method may include, in response to PF load reaching a threshold and PF temperature being lower than the PF regeneration temperature, lowering the CR and then selectively adjusting spark timing based on an estimated residual gas fraction (RGF) at the lower CR.