Debris diverter shield for fuel injector
US9644589B2 · kind B2 · utility
1Cited by
8References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 20, 2013 |
| Grant date | May 9, 2017 |
| Priority date | — |
| Expiry date | Apr 19, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M2200/27
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A tubular debris shield and diverter mounted in a high pressure flow passage within a fuel injector, provide the dual functions of passing the main flow of high pressure fuel with large debris particles to relatively large discharge openings, such as the injector spray holes, while allowing some high pressure fuel to flow through a multitude of very small transverse holes to a sensitive hydraulic component, such an injector control valve circuit. In one embodiment, the tube has a wall thickness in the range of about 0.1 to 0.5 mm at least about 2000 holes with a diameter in the range of about 20 to 30 microns.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.