Fuel pumping apparatus
US4624233A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 10, 1985 |
| Grant date | Nov 25, 1986 |
| Priority date | — |
| Expiry date | Jul 10, 2005 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M59/36
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel pumping apparatus for supplying fuel to an internal combustion engine has a high pressure pump including a plunger reciprocable in a bore connected to a fuel injection nozzle. Valve means including a valve member and a piston member is provided. The valve member can be moved to a closed position to allow fuel flow to the nozzle and to prevent such flow an electromagnetic valve can be operated to allow displacement of the piston member. Movement of the piston member lowers the pressure of fuel supplied to the nozzle but also moves the valve member to the open position to allow the remaining fuel displaced by the piston to flow to a drain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.