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:
Oct. 23, 2018
Filed:
Mar. 17, 2017
Applicant:
Ford Global Technologies, Llc, Dearborn, MI (US);
Inventors:
Gary Alan Coulson, Ypsilanti, MI (US);
Steven Wooldridge, Manchester, MI (US);
Gopichandra Surnilla, West Bloomfield, MI (US);
Assignee:
Ford Global Technologies, LLC, Dearborn, MI (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02D 41/06 (2006.01); F02D 41/26 (2006.01); F02D 41/38 (2006.01); F02D 37/02 (2006.01); F02D 41/08 (2006.01); F02P 5/145 (2006.01);
U.S. Cl.
CPC ...
F02D 41/064 (2013.01); F02D 37/02 (2013.01); F02D 41/08 (2013.01); F02D 41/26 (2013.01); F02D 41/3809 (2013.01); F02P 5/145 (2013.01); F02D 2200/0611 (2013.01);
Abstract
Methods and systems are provided for adjusting engine cranking speed, fueling, and spark initiation to increase fuel vaporization during cold-start conditions. In one example, a method may include, during engine cold-start, cranking the engine at a lower speed relative to a nominal cranking speed while injecting fuel and disabling spark for a number of engine cycles, and after the completion of the number of engine cycle increasing the cranking speed and initiating spark.