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. 20, 1998
Filed:
Apr. 03, 1997
Applicant:
Inventors:
David George Farmer, Plymouth, MI (US);
Gopichandra Surnilla, Westland, MI (US);
Daniel V Orzel, Westland, MI (US);
Assignee:
Ford Global Technologies, Inc., Dearborn, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D / ;
U.S. Cl.
CPC ...
123704 ;
Abstract
Air is purged through a fuel vapor recovery system to induct a mixture of purged air and fuel vapor from the fuel vapor recovery system into an engine air/fuel intake. An air/fuel vapor ratio of the inducted mixture is provided from a hydrocarbon sensor positioned in the engine air/fuel intake. Fuel vapor flow is then calculated and this calculation used to adjust fuel delivered to the engine to maintain a desired lean air/fuel ratio.