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. 22, 1998
Filed:
Oct. 29, 1997
Gary L Seitz, Chelsea, MI (US);
Yi Cheng, Jackson, MI (US);
Mark E Hope, Ann Arbor, MI (US);
Shean Huff, Ann Arbor, MI (US);
Mary Joyce, Farmington Hills, MI (US);
Jerry Kennie, Canton, MI (US);
Dennis A Krozek, Novi, MI (US);
Robert J Nankee, II, Canton, MI (US);
Chrysler Corporation, Auburn Hills, MI (US);
Abstract
The present invention provides a method for controlling the combustion parameters of an internal combustion engine with an oxygen sensor prior to a closed loop operating condition. If the output voltage of the oxygen sensor indicates a lean air to fuel ratio condition, the percent alcohol content is incremented to a limit based on an E85 possibility curve. If the voltage output of the oxygen sensor indicates a rich air to fuel ratio condition, the percent alcohol content is decremented to a limit based on an E0 possibility curve. After the end of the fuel blending period or when the internal combustion engine reaches a closed loop mode, control of the combustion parameters of the internal combustion engine are returned to normal regime oxygen sensor feedback control.