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:
Jul. 27, 1993
Filed:
Nov. 06, 1992
Judith M Curran, Northville, MI (US);
Raymond L Willey, Redford, MI (US);
David A Wright, Brighton, MI (US);
Ford Motor Company, Dearborn, MI (US);
Abstract
An air/fuel control system for use with an internal combustion engine which is adapted to burn fuels having different combustion characteristics. The control system compensates for errors in the fuel-type signal produced by a sensor. A closed-loop air/fuel mixture controller responds to sensed exhaust oxygen levels to maintain combustion near stoichiometry. When the errors from the fuel type sensor predominate, at high engine speed and load, a fuel-type variable, initially obtained from the sensor, is adaptively modified. The error compensation scheme thus adapts to changing fuels, fuel sensor errors, and differing engine operating characteristics to provide better fuel control and improved performance.