Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Shahid Ahmed Siddiqui1
Date of Patent
December 13, 2011
1Patent Application Number
128360061
Date Filed
July 14, 2010
1Patent Citations Received
Patent Primary Examiner
Patent abstract
Systems and methods for performing leak testing on fuel system components in hybrid vehicles during engine-off operating conditions are disclosed. For example, a fuel tank may include a pressure accumulator which may be filled with fuel via a fuel pump in order to generate a vacuum which may be used to diagnose leaks in the fuel system.
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