Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Ken John Behr0
Bob Roy Jentz0
Has R Patel0
Michael Igor Kluzner0
Date of Patent
September 28, 2010
Patent Application Number
12055111
Date Filed
March 25, 2008
Patent Citations Received
Patent Primary Examiner
Patent abstract
Air/fuel imbalance monitoring systems and methods for monitoring air/fuel ratio imbalance of an internal combustion engine are disclosed. In one embodiment, an oxygen sensor is sampled above cylinder firing frequency and a ratio of data from at least one window over a total number of windows is determined. The approach can be used to indicate imbalances between engine cylinders.
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