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:
Dec. 10, 2002
Filed:
Oct. 11, 2000
Applicant:
Inventors:
Francis Connolly, Ann Arbor, MI (US);
Kelvin Lee Dobbins, Dearborn, MI (US);
Kenneth Carl Leisenring, Dearborn, MI (US);
Assignee:
Ford Global Technologies, Inc., Dearborn, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02P 5/00 ;
U.S. Cl.
CPC ...
F02P 5/00 ;
Abstract
Systems and methods for controlling an internal combustion engine during and shortly after starting include controlling combustion burn location via ignition timing to improve engine stability while reducing feedgas emissions. Open or closed loop control based on observed or measured mass fraction burned or cumulative released heat allows maintenance of a lean air/fuel ratio charge with significantly retarded ignition timing to reduce catalyst light-off time and temperature and reduce engine feedgas emissions.