Thin-walled valve-closed-orifice spray tip for fuel injection nozzle
US5449121A · kind A · utility
9Cited by
11References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 26, 1993 |
| Grant date | Sep 12, 1995 |
| Priority date | — |
| Expiry date | Feb 26, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M61/1806
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A valve-closed-orifice (VCO) spray tip having an internal tip seat and one or more fuel spray orifices. The thickness of the tip in the wall portion defining the internal tip seat and upstream entrance of each orifice is made less than that of previously known VCO tips. The length to diameter ratio of each orifice is also relatively smaller than that of previously known VCO tips. Advantages of the thinner wall portion include improved fuel injection spray characteristics as well as reduced cost of forming orifices through the tip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.