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Systems and methods for preventing fuel tank overfilling

  • US 10,288,013 B2
  • Filed: 04/11/2016
  • Issued: 05/14/2019
  • Est. Priority Date: 04/11/2016
  • Status: Active Grant
First Claim
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1. A method comprising:

  • pressurizing a vessel external to a fuel tank that supplies fuel to a vehicle engine; and

    while a fuel level in the fuel tank is increasing during a refueling event, selectively coupling the vessel to the fuel tank to pressurize the fuel tank to a predetermined pressure threshold responsive to an indication that the fuel level in the fuel tank has reached a capacity of the fuel tank, where the pressurizing the fuel tank desorbs fuel vapors stored in a fuel vapor storage canister to the fuel tank.

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