Injector having structure for controlling nozzle needle
US7284712B2 · kind B2 · utility
3Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2005 |
| Grant date | Oct 23, 2007 |
| Priority date | — |
| Expiry date | May 18, 2026 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M2547/006
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A valve back pressure chamber is provided to exert a back pressure of a first valve needle. Furthermore, a hydraulic pressure passage is provided to extend through the valve back pressure chamber. A valve body is provided to a second valve needle and is driven to connect and disconnect between the hydraulic pressure passage and a fuel tank and thereby to drive the first valve needle. The second valve needle is driven by hydraulic pressure induced by an actuator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.