Anti-bounce needle valve for a fuel injector
US6874703B2 · kind B2 · utility
2Cited by
9References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2002 |
| Grant date | Apr 5, 2005 |
| Priority date | — |
| Expiry date | Nov 23, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M2200/306
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An anti-bounce needle valve for a fuel injector, wherein the needle inherently incorporates the anti-bounce feature. The needle has a conventionally configured exterior for interfacing with a valve seat and a tip body of a conventional fuel injector. The needle is characterized by a needle body having an interior cavity which is filled with small diameter shot, preferably generally spherical tungsten carbide shot. In operation, when the needle impacts upon the valve seat at the conclusion of a fuel injection process, the shot causes the needle collision with the valve seat to be inelastic, thereby eliminating needle bounce.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.