Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
October 12, 2010
Patent Application Number
12399225
Date Filed
March 6, 2009
Patent Citations Received
Patent Primary Examiner
Patent abstract
Systems and methods are provided for monitoring reverse flow of fuel vapors and/or air through a vehicle fuel vapor recovery system, said fuel vapor recovery system coupled to an engine intake of a boosted internal combustion engine. One example method comprises, during boost, when the fuel vapor recovery system is commanded to be sealed from the intake, indicating degradation based on a pressure value in the fuel vapor recovery system.
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