Spill control system for distributor pump
US4550702A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 5, 1984 |
| Grant date | Nov 5, 1985 |
| Priority date | — |
| Expiry date | Oct 5, 2004 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M41/1411
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A spill control system for a distributor pump employs an axially positionable valve member to control the passage of diverted fuel through a spill passage. The valve member is axially displaced by an actuator pin mounted to the cam ring which actuates the pump plungers. A cam surface which rotates with the pump rotor engages the actuator pin. The valve member is also angularly positionable for controlling the passage of diverted fuel. The diverted fuel is spilled to the housing interior or in one embodiment may be recouped and redirected to the fuel inlet passage in the rotor. A check valve is employed to prevent the passage of diverted fuel until the injection pressure of the diverted fuel exceeds a pressure in excess of the maximum transfer pressure of the pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.