Back to results
US 2023/0228235 A1Published application
Method and system for diagnosing an evaporative emissions system
AssigneeFord Global Technologies, LLC
InventorAed Dudar
Life of this patent
Estimating the term…
Abstract
Methods and systems for diagnosing operation of an evaporative emissions system are described. The methods and systems may include increasing an amount of vacuum stored in an evaporative emissions system during discontinuously operating an engine in a boosted operating mode. Storing vacuum allows the evaporative emissions system to reach a desired vacuum level to verify absence of an evaporative emissions system breech.
Claims8
A vehicle system, comprising:
- an engine including a compressor;
- an evaporative emissions system including an ejector;
- and
- a controller including executable instructions stored in non-transitory memory that cause the controller to accumulate a vacuum in the evaporative emissions system during conditions where the engine switches from boosted operation to non-boosted operation, the vacuum accumulated only during conditions when the engine is operated boosted.
1 more element
Dependencies are inferred from the claim text.