Fuel pumping apparatus
US5138999A · kind A · utility
5Cited by
6References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 28, 1991 |
| Grant date | Aug 18, 1992 |
| Priority date | — |
| Expiry date | Oct 28, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M41/1416
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A rotary distributor type fuel pump has an annular cam ring which is movable by a fluid pressure actuated piston to control the timing of fuel delivery. The cylinder containing the piston has an enlarged portion in which is slidable a sleeve located about the piston. The sleeve is engagable with the piston and one end is exposed to a fluid pressure applied to the piston to assist the movement of the piston when a valve is set such that an annular space is part defined by the other end of the sleeve, is connected to a drain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.