Patent ID: 9429957
Filing Date: 2016-08-30
CPC Classification: G05D,Y10T

Claim Text:
1. A fuel tank assembly that is fillable by a fuel pump, the fuel pump having a nozzle through which the fuel pump delivers liquid fuel and being configured such that the existence of a predetermined condition causes the fuel pump to stop delivering fuel, the fuel tank assembly comprising: a tank defining a chamber having a first maximum fill level and a second maximum fill level; wherein the first maximum fill level is defined by a first fuel blend having an ethanol content of twenty percent (20%) or less; wherein the second maximum fill level is defined by a second fuel blend having an ethanol content of one hundred percent (100%); a fill tube defining an opening configured to receive the nozzle of the fuel pump and defining a first passageway that provides fluid communication between the opening and the chamber to transfer liquid fuel from the nozzle to the chamber; a fuel pump shut-off system that is configured such that whether the predetermined condition exists when the nozzle is in the opening depends on a total volume of liquid fuel in the chamber and an ethanol content of the liquid fuel in the chamber; wherein: wherein the adjusted height is between the first and second heights and is defined by the ethanol content of the liquid fuel in the chamber; and wherein the predetermined condition is the inlet at the adjusted height being sufficiently obstructed to prevent the passage of air from the chamber through the second passageway.