General-purpose engine fuel tank fuel vapor treatment system
US7320314B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 2006 |
| Grant date | Jan 22, 2008 |
| Priority date | — |
| Expiry date | May 15, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60K2015/03547
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A general-purpose engine fuel tank fuel vapor treatment system includes: a canister mounted on a peripheral part of a fuel filler opening of a fuel tank mounted on a general-purpose engine, the canister housing a fuel adsorbent for adsorbing fuel vapor generated in the interior of the fuel tank; and an air vent provided in a tank cap fitted into the filler opening of the fuel tank. The air vent has an inner end opening in the interior of the fuel tank, and an outer end opening to the atmosphere. The canister is connected to the air vent. The interior of the fuel tank is made open to the atmosphere via the canister and the air vent. Thus, need for special piping is eliminated and fuel vapor within the fuel tank is treated while always stably maintaining the interior of the fuel tank at atmospheric pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.