Filler neck cup pressure regulator
US6170538A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 10, 1999 |
| Grant date | Jan 9, 2001 |
| Priority date | — |
| Expiry date | May 10, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86324
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A fuel system is provided having a fuel tank formed to include an interior region, a fuel vapor discharge apparatus coupled to the fuel tank to vent fuel vapor from the interior region of the fuel tank, a fuel delivery apparatus formed to include an interior region and coupled to the fuel tank to deliver fuel to the interior region of the fuel tank, and a fuel vapor recirculation apparatus in fluid communication with the interior region of the fuel tank. The fuel vapor recirculation apparatus delivers fuel vapor from the interior region of the fuel tank to the interior region of the fuel delivery apparatus, and includes a sensor in fluid communication with the interior region of the fuel delivery apparatus to sense pressure extant in the interior region of the fuel delivery apparatus, a housing, and a flow restrictor coupled to the sensor and positioned to lie in the housing to move between a first position restricting the flow of fuel vapor from the fuel tank to the fuel delivery apparatus in response to sensations from the sensor without regard to changes in the vapor pressure extant in the interior region of the fuel tank and a second position permitting flow of fuel vapor from …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.