Fuel injector
US6948667B2 · kind B2 · utility
8Cited by
7References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 25, 2002 |
| Grant date | Sep 27, 2005 |
| Priority date | — |
| Expiry date | Jul 30, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M51/0603
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel injector, in particular a fuel injector for fuel-injection systems of internal combustion engines, having a piezoelectric or magnetostrictive actuator, has a coupler with a master piston and a slave piston which are connected to a pressure chamber. The pressure chamber is filled with an hydraulic fluid, and a coupler spring presses apart the master piston and the slave piston. The pressure chamber is connected to an actuator chamber via a check valve whose blocking direction faces the pressure chamber. The actuator chamber is sealed from a fuel chamber via a movable membrane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.