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:
Sep. 14, 1999
Filed:
Oct. 29, 1997
William D Rotramel, Plymouth, 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);
Howard W Krausman, Dexter, MI (US);
Richard K Moote, Ann Arbor, MI (US);
John M Prevost, Jackson, MI (US);
Gary L Seitz, Chelsea, MI (US);
Patrick T McCourt, Auburn Hills, MI (US);
Chrysler Corporation, Auburn Hills, MI (US);
Abstract
The present invention is directed towards a method of controlling combustion parameters of an internal combustion engine prior to oxygen sensor feedback availability for a flexible fueled vehicle. If the vehicle has previously been running on ethanol or has been using ethanol in the recent past, a first strategy is employed which basis engine fueling on the minimum of a theoretically appropriate fueling value and a theoretically calculated value. If the vehicle has not previously been running on ethanol or has not been using ethanol in the recent past, a second strategy is employed which basis engine fueling on the minimum of the theoretically appropriate fueling value, the theoretically calculated value and a roughness calculated value.