Two step pressure control of fuel pump module
US8230841B2 · kind B2 · utility
3Cited by
13References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 25, 2009 |
| Grant date | Jul 31, 2012 |
| Priority date | — |
| Expiry date | Nov 20, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M37/025
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel system comprises a fuel line that supplies fuel to an engine at a fuel line pressure. A first fuel pump selectively supplies fuel to the fuel line at a first pressure. A second fuel pump selectively supplies fuel to the fuel line at a second pressure that is greater than the first pressure. A check valve having an inlet in communication with an exit port of the first fuel pump and an outlet in communication with the fuel line is positioned based on the fuel line pressure and the first pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.