Distributor fuel injection pump for internal combustion engines
US5020493A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 4, 1989 |
| Grant date | Jun 4, 1991 |
| Priority date | — |
| Expiry date | Dec 4, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M63/0205
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A distributor fuel injection pump for internal combustion engines, having a cam ring which drives at least one radial piston and having a distributor piston disposed transversely to the cam ring and defining a pump work chamber, having a distributor groove and longitudinal intake grooves in the jacket face. For shutoff of the engine, this distributor piston is axially displaceable and thereby undergoes a relative rotation relative to the cam ring, so that the longitudinal intake grooves upon the compression stroke of the pump piston come precisely to coincide with intake conduits and by this means the pumped fuel is pumped directly back into a suction chamber of the injection pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.