Method and system for fuel vapor control
AssigneeFord Global Technologies, LLC
InventorsDouglas Raymond Martin, Kevin Aguilar, Alessandra Martin
Life of this patent
Estimating the term…
Abstract
Methods and systems are provided for reducing fuel vapor generation from a fuel tank in a hybrid vehicle. A layer of gel-foam fire retardant is layered over the surface of fuel in the fuel tank. In response to the layer being below a fuel level in the fuel tank, fuel pump operation may be automatically disabled.
Claims18
A method for a vehicle fuel system, comprising floating a layer of gel-foam fire retardant on a surface of liquid fuel in a fuel tank to reduce an amount of fuel vapors generated in a dome region of the fuel tank, the vehicle being an on-road vehicle wherein the fuel system includes a fuel level sensor coupled to the layer of gel-foam fire retardant for indicating a position of the layer in the fuel tank.
A method for a vehicle fuel system, comprising:
- adjusting operation of a fuel pump based on a position of a layer of gel-foam fire retardant in a fuel tank, the layer floating on a surface of fuel in the fuel tank.
A fuel system coupled to a vehicle, comprising:
- a fuel tank for storing a liquid fuel;
- a fuel pump coupled in the fuel tank for delivering fuel to an injector;
- and a layer of gel-foam fire retardant floating on a surface of the liquid fuel in the fuel tank, a fuel level sensor coupled to the layer of gel-foam fire retardant for indicating a position of the layer within the fuel tank.
Dependencies are inferred from the claim text.