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US 11,970,998 B2Granted
Systems and methods for a fuel vapor canister heating element
AssigneeFord Global Technologies, LLC
InventorAed Dudar
Life of this patent
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Abstract
Methods and systems are provided for diagnosing a heating element coupled to a canister of an evaporative emissions control (EVAP) system. In one example, a method (or system) may include evacuating the canister at different temperature conditions, and diagnosing the heating element based on the different times taken to evacuate the canister at the different temperature conditions.
Claims20
A method for an engine, comprising:
- evacuating a canister of an evaporative emissions control (EVAP) system;
- and
- diagnosing a heating element coupled to the canister of the EVAP system based on a time to evacuate the canister at different temperature conditions.
A method for an engine, comprising:
- evacuating a canister of an evaporative emissions control (EVAP) system;
- and
- diagnosing a heating element coupled to the canister of the EVAP system based on a time to evacuate the canister at different temperature conditions, wherein diagnosing the heating element includes evacuating a carbon filled canister of gases a first plurality of times while the heating element is deactivated.
A system for an engine, comprising:
- a controller storing instructions in non-transitory memory that, when executed, cause the controller to:
- evacuate a canister of an evaporative emissions control (EVAP) system;
- and
- diagnose a heating element coupled to the canister of the EVAP system based on a time to evacuate the canister at different temperature conditions.
1 more element
Dependencies are inferred from the claim text.