Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
October 24, 2017
Patent Application Number
14084207
Date Filed
November 19, 2013
Patent Citations Received
Patent Primary Examiner
Patent abstract
A method for localizing restrictions in a fuel system during refueling, comprising: monitoring fuel tank pressure, fuel vapor canister temperature, and evaporative leak check module pressure during a refueling event; and responsive to a premature shutoff event, indicating a location of a restriction among a plurality of locations based on whether monitored pressure and temperature changes during the refueling event are greater than respective thresholds. In this way, the cause of a premature shutoff event may be diagnosed without requiring additional sensors within the fuel system.
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