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:
Feb. 08, 2005
Filed:
Aug. 20, 2003
Justin E. Dewitte, Ann Arbor, MI (US);
John M. Prevost, Spring Arbor, MI (US);
Zhong LI, Ypsilanti, MI (US);
Howard W. Krausman, Dexter, MI (US);
Justin E. DeWitte, Ann Arbor, MI (US);
John M. Prevost, Spring Arbor, MI (US);
Zhong Li, Ypsilanti, MI (US);
Howard W. Krausman, Dexter, MI (US);
DaimlerChrysler Corporation, Auburn Hills, MI (US);
Abstract
A vehicle controller adjusts fuel delivered to an engine to compensate for an unknown fuel type being added to a fuel tank in a flexible fueled vehicle. The controller fuels a first set of engine cylinders according to first fueling scheme. For example, the controller fuels the first set assuming that E85 fuel was added to the fuel tank. The controller fuels a second set of engine cylinders according to a second fueling scheme. For example, the controller fuels the second set assuming that E0 fuel was added to the fuel tank. The controller continues to fuel the engine in this manner until an oxygen sensor becomes available. When the oxygen sensor becomes available, the vehicle controller may fuel the engine according to information from the oxygen sensor.