Direct operated velocity controlled nozzle valve for a fluid injector
US5752659A · kind A · utility
36Cited by
4References
33Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 7, 1996 |
| Grant date | May 19, 1998 |
| Priority date | — |
| Expiry date | May 7, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M63/001
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The present invention provides direct control over the opening and closing of a fuel injector nozzle valve independent of fuel injection pressure or engine operating condition and allows for initial fuel injection rate shaping by controlling the opening velocity of the nozzle valve. The present invention further allows for control over the closing velocity of the nozzle valve thereby reducing stresses on the nozzle tip as the check engages the check seat while not adversely affecting the performance of the fuel injector. This results in lower tip wear and improved life of the fuel injector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.