Fuel pump
US9151289B2 · kind B2 · utility
2Cited by
30References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 21, 2008 |
| Grant date | Oct 6, 2015 |
| Priority date | — |
| Expiry date | Jun 6, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B53/18
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel pump is disclosed wherein a substantially cylindrical plunger bore is provided with an annular drain groove fluidically coupled to a drain duct. A pump plunger is driven by a drive system located in a separate mechanical compartment that holds a reservoir of lubricating oil. An annular seal is provided adjacent the drain groove substantially at the end of the bore and retained in position by a seal support. Exemplary embodiments provide the drain groove and seal as being positioned immediately adjacent one another so that the seal forms a lower wall of the drain groove.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.