Method and system for determining level of fuel
US7343797B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 15, 2005 |
| Grant date | Mar 18, 2008 |
| Priority date | — |
| Expiry date | Oct 10, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F23/18
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and system for determining the level of fuel contained in the tank of a motor vehicle includes a fuel pump disposed in the tank for creating a flow of fuel in the tank. An elongated tube is placed vertically in the tank. The system also includes a venturi tube coupled between the fuel pump and the elongated tube for creating a vacuum as a result of a portion of the flow of fuel therethrough from the fuel pump thereby drawing fuel vapor from the elongated tube at a varying pressure, the pressure decreasing as the amount of fuel vapor in the tank increases. A controller is coupled to the elongated tube for determining the level of fuel in the tank based on the pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.