Back to results
US 11,761,406 B1Granted
Methods and systems for controlling a bellows in a pressure-less fuel tank
AssigneeFord Global Technologies, LLC
InventorsAed Dudar, Russell Randall Pearce
Life of this patent
Estimating the term…
Abstract
Methods and systems are provided for adjusting a volume of a variable volume device arranged in a fuel tank. In one example, a method may include, upon conditions being met, operating a pump of an evaporative emissions control (EVAP) system leak detection module (ELCM) to increase or decrease the volume of the variable volume device in response to a refueling event of a vehicle being transported.
Claims20
A method, comprising:
- operating a pump of an evaporative leak detection module (ELCM) of an evaporative emissions control (EVAP) system to adjust a volume of a bellows within a fuel tank outside of a diagnostic.
A system, comprising:
- a fuel system coupled to an engine, the fuel system comprising a fuel tank;
- an evaporative emissions control (EVAP) system comprising an evaporative leak detection module (ELCM), the EVAP system coupled to the engine;
- a bellows arranged in the fuel tank, the bellows configured to expand or contract in response to a fuel tank pressure or to operation of a pump of the ELCM, wherein an interior of the bellows is coupled to a vent line in which the ELCM is arranged via a vapor line;
- and
- a controller comprising computer-readable instructions of non-transitory memory thereof that when executed cause the controller to:
- activate the pump outside of a diagnostic of the bellows;
- open a first valve and a second valve arranged in the vapor line;
- and
- adjust a pressure within the bellows.
6 more elements
A method for a hybrid vehicle, comprising:
- adjusting a pressure of an interior of a bellows in response to a refueling event via a pump of an evaporative leak control module (ELCM) arranged in an evaporative emission control (EVAP) system coupled to a fuel tank in which the bellows is arranged.
Dependencies are inferred from the claim text.