Evaporative emissions control system leak check module including first and second solenoid valves
US11225934B2 · kind B2 · utility
0Cited by
20References
15Claims
0Family size
Assignee
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Key dates
| Filing date | May 31, 2019 |
| Grant date | Jan 18, 2022 |
| Priority date | — |
| Expiry date | May 31, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M2025/0845
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A system and method for leak check module including first and second solenoid valves. A first solenoid valve is configured to be coupled between a fuel vapor canister and atmospheric air for controlling air flow in a first flow path between the fuel vapor canister and atmospheric air. A pump is configured to be coupled to atmospheric air. A second solenoid valve is configured to be coupled between the pump and the fuel vapor canister for controlling air flow in a second flow path between the fuel vapor canister and atmospheric air through the pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.