Closure device for controlling evaporative emissions from a fuel tank
US9193260B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 2011 |
| Grant date | Nov 24, 2015 |
| Priority date | — |
| Expiry date | Aug 17, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60K2015/03547
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A closure device, such as a fuel cap, for controlling evaporative emissions from a fuel tank. In one aspect, the invention comprises: a housing defining an internal chamber containing a hydrocarbon adsorbing media; a fuel vapor diffuser extending from a floor of the internal chamber and into the internal chamber, the fuel vapor diffuser comprising: (1) an inlet passageway extending from a fuel vapor inlet port to a plenum in a top portion of the fuel vapor diffuser; and (2) a downcomer passageway extending from the plenum to at least one aperture located at a bottom portion of the fuel vapor diffuser, the at least one aperture forming a passageway between the downcomer passageway and the internal chamber; and at least one outlet passageway extending from the internal chamber to an atmospheric air outlet port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.