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:
Nov. 03, 2015
Filed:
Jan. 30, 2013
Applicant:
Ford Global Technologies, Llc, Dearborn, MI (US);
Inventors:
Ed Badillo, Flat Rock, MI (US);
Samuel Guido, Dearborn, MI (US);
Ross Dykstra Pursifull, Dearborn, MI (US);
Dev Saberwal, Canton, MI (US);
Assignee:
Ford Global Technologies, LLC, Dearborn, MI (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02B 13/00 (2006.01); F02D 19/08 (2006.01); F02D 41/14 (2006.01); F02P 5/15 (2006.01); F02D 37/02 (2006.01); F02D 41/00 (2006.01); F02D 19/02 (2006.01); F02D 19/06 (2006.01); F02M 25/07 (2006.01);
U.S. Cl.
CPC ...
F02D 19/08 (2013.01); F02D 19/024 (2013.01); F02D 19/0647 (2013.01); F02D 19/081 (2013.01); F02D 37/02 (2013.01); F02D 41/0025 (2013.01); F02D 41/1446 (2013.01); F02P 5/1502 (2013.01); F02D 19/0689 (2013.01); F02D 19/0692 (2013.01); F02D 19/084 (2013.01); F02D 41/0027 (2013.01); F02D 2200/0611 (2013.01); F02M 25/0727 (2013.01); Y02T 10/32 (2013.01); Y02T 10/36 (2013.01); Y02T 10/46 (2013.01);
Abstract
Methods and systems are provided for reducing exhaust temperatures during high engine load conditions in engine systems configured to operate with multiple fuels. Stoichiometric cylinder operation is provided via injection of a gaseous fuel such as CNG. In response to elevated exhaust temperatures, the cylinder is enriched by injecting a liquid fuel, such as gasoline, while maintaining the injection of CNG and while maintaining spark timing at MBT.