Back to results
US 9,802,478 B2Granted
Fuel tank depressurization before refueling a plug-in hybrid vehicle
AssigneeFord Global Technologies, LLC
InventorsDennis Seung-Man Yang, Aed M. Dudar, Russell Randall Pearce
Life of this patent
Estimating the term…
Abstract
A method for operating a vehicle system is provided. The method includes monitoring a change in a temperature of the fuel vapor canister coupled to a fuel tank via a canister temperature sensor and adjusting operation of a fuel tank isolation valve based on the change in temperature of the fuel vapor canister.
Claims20
A method for operating a vehicle system comprising:
- monitoring a change in a temperature of a fuel vapor canister coupled to a fuel tank via a canister temperature sensor;
- and
- adjusting operation of a fuel tank isolation valve based on the change in temperature of the fuel vapor canister.
A vehicle system comprising:
- a fuel vapor canister coupled to a fuel tank;
- a canister temperature sensor coupled to the fuel vapor canister;
- a fuel tank isolation valve coupled between the fuel vapor canister and the fuel tank;
- and a control sub-system programmed to:
- monitor a change in a temperature of the fuel vapor canister via sensors coupled to the fuel vapor canister;
- and
- adjust operation of the fuel tank isolation valve based on the change in temperature of the fuel vapor canister.
4 more elements
A method, comprising:
- routing fuel vapors from a fuel tank into a fuel vapor canister;
- when a fuel tank pressure sensor is degraded, determining a fuel tank pressure based on a monitored change in temperature of the fuel vapor canister;
- and
- adjusting a fuel tank isolation valve based on the determined fuel tank pressure.
1 more element
Dependencies are inferred from the claim text.