External fuel vapor emission adjusting device for fuel tank
US7614387B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 2, 2007 |
| Grant date | Nov 10, 2009 |
| Priority date | — |
| Expiry date | Jul 20, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/5835
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel vapor adjusting device includes an expansion chamber at a top portion of a fuel tank; an oil spill trip valve being connected to the expansion chamber, which can turn off when there's spilling oil or the fuel tank is fell down; and at least two canisters. Each canister includes a fuel vapor entrance port, a fuel vapor outlet port, and a fuel vapor recycling vent. The fuel vapor entrance port and the fuel vapor outlet port form a fuel vapor filtering passage, and the fuel vapor entrance port and the fuel vapor recycling vent form a fuel vapor recycling passage. The oil spill trip valve, the at least two fuel vapor filtering passages connect in series, and the oil spill trip valve, the at least two fuel vapor recycling passages connect in parallel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.