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:
Jun. 20, 2017
Filed:
Jun. 30, 2015
Applicant:
Ford Global Technologies, Llc, Dearborn, MI (US);
Inventors:
Chris Paul Glugla, Macomb, MI (US);
Garlan J. Huberts, Milford, MI (US);
Nelson William Morrow, Saline, MI (US);
Assignee:
Ford Global Technologies, LLC, Dearborn, MI (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02P 17/12 (2006.01); F02P 11/06 (2006.01); F02P 11/02 (2006.01);
U.S. Cl.
CPC ...
F02P 17/12 (2013.01); F02P 11/02 (2013.01); F02P 11/06 (2013.01);
Abstract
Methods and systems are provided for inferring spark plug fouling due to accumulation of fuel additives thereon. In one example, an engine controller may infer spark plug hot fouling based on higher than expected exhaust temperatures by correlating the elevated exhaust temperature with late combustion phasing due to additive accumulation. A confidence factor of the spark plug hot fouling detection may be enhanced based on data regarding concurrent misfire and/or pre-ignition events.