Fuel pumping apparatus
US5080563A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 15, 1990 |
| Grant date | Jan 14, 1992 |
| Priority date | — |
| Expiry date | Feb 15, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M59/36
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel pumping apparatus of the rotary distributor type includes a main pumping plunger and an auxiliary plunger operable at the same time by a cam. During inward movement fuel is displaced by the pumping plunger to an outlet. The auxiliary plunger displaces fuel to a shuttle bore containing a shuttle and during the initial inward movement a first flow path to drain from the bore containing the pumping plunger is open but this is closed upon further movement of the shuttle until a second flow path is opened. The second flow path includes a groove having an inclined edge so that the angular setting of the shuttle determines the amount of fuel supplied through the outlet. A valve is also provided to allow fuel displaced by the auxiliary plunger to flow to a drain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.