Fuel pump having a pressure chamber vented via a ball valve to the fuel tank
US4940397A · kind A · utility
14Cited by
3References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 6, 1989 |
| Grant date | Jul 10, 1990 |
| Priority date | — |
| Expiry date | Feb 6, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M37/06
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel pump includes a connecting pipe having an open end disposed at the lowest point in a pressure chamber supplied with fuel by a pressure valve. The connecting pipe is connected to a mixture-former and the pressure chamber has in its upper region a ball valve with a return line which leads to a fuel tank. The pressure chamber can have a cavity establishing the lowest region thereof, the open end of the connecting size being disposed in the cavity. A filter can surround the lower end of the pipe to filter the fuel supplied thereto.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.