Multi-path purge ejector system in an evaporative emissions control system
US11542896B2 · kind B2 · utility
2Cited by
6References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 23, 2020 |
| Grant date | Jan 3, 2023 |
| Priority date | — |
| Expiry date | Dec 3, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M25/0854
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Methods and systems are provided for diagnostics and subsequent cleaning of an ejector in a fuel vapor purge system of a vehicle with a boosted internal combustion engine. In one example, a method may include, in response to indication of blockage in a fuel vapor purge system, a purge system valve may be actuated to a position enabling routing of contaminants blocking the ejector to an engine intake manifold, thereby cleaning the ejector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.