Filtered fuel pump module
US5960775A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 8, 1997 |
| Grant date | Oct 5, 1999 |
| Priority date | — |
| Expiry date | Dec 8, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60K2015/03105
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A fuel pump module disposed within a vehicle fuel tank has a fuel pump therein to draw fuel from the fuel tank and deliver that fuel under pressure to the vehicle engine, and a jet pump driven by the fuel pump to lower the pressure within the module to draw fuel from the fuel tank through a filtered inlet of the module when the fuel pump is operating. When the fuel pump is not operating, such as when the vehicle is not in use, the jet pump ceases to operate and the pressure within the module returns to that of the fuel tank. When the level of fuel in the fuel tank is lower than that within the fuel pump module and the pump is turned off, a portion of the fuel within the module returns to the fuel tank through the filtered inlet of the module thereby dislodging at least some of the contaminants trapped by the filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.