Unit for delivering fuel from a supply tank to the internal combustion engine of a motor vehicle
US5551842A · kind A · utility
14Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 5, 1994 |
| Grant date | Sep 3, 1996 |
| Priority date | — |
| Expiry date | Oct 5, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D5/002
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A device for delivering fuel from a storage tank to the engine of a motor vehicle, having a two-stage feed pump driven to rotate by an electric drive motor. The preliminary stage of the feed pump is embodied as a side channel pump whose partially ring-shaped supply conduit has in its pump course a cross sectionally reduced region, which is constituted by means of a reduction of the conduit depth and in which the fuel flowing through the supply conduit is maintained at a constant pressure level so that the length of the supply conduit effective for a pressure increase can be reduced to achieve a quick increase of delivery pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.