Two-stage, hydraulic-assisted fuel injection nozzle
US4684067A · kind A · utility
40Cited by
9References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 21, 1986 |
| Grant date | Aug 4, 1987 |
| Priority date | — |
| Expiry date | Mar 21, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7768
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel injection nozzle is provided with a pressure actuated injection valve with a first spring and a second spring operatively associated therewith to permit two stage opening of the injection valve, these spring also controlling opening movement of a valve during the injection cycle in the mid to higher speed range of engine operation to allow pressurized fuel to act on the stem end of the injection valve to effect its closure at a higher valve closing pressure than the valve closing pressure from idle to a predetermined mid-speed range of engine operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.