Variable check stop for micrometering in a fuel injector
US6568602B1 · kind B1 · utility
10Cited by
28References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 23, 2000 |
| Grant date | May 27, 2003 |
| Priority date | — |
| Expiry date | May 23, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M2200/21
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel injector performs main fuel injection by raising fuel pressure in a nozzle chamber to lift a check valve member to a fully open position, and performs preinjection or microinjection by operating a solid state motor to lower a check stop so that when fuel pressure in the nozzle chamber is raised the check valve member is limited to lift a much smaller distance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.