Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Shane Elwart0
Christian Thomas Goralski, Jr.0
Eva Thanasiu0
Robert Joseph Jerger0
Date of Patent
August 16, 2011
0Patent Application Number
119263820
Date Filed
October 29, 2007
0Patent Primary Examiner
Patent abstract
A method is described for identifying fuel composition from an index ratio of oxygen sensors upstream and downstream of a catalyst of the engine. Different index ratios are achieved for different fuel compositions, and thus it is possible to identify fuel composition, such as fuel alcohol content, based on changes in the index ratio.
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