Directly-actuated piezoelectric fuel injector with variable flow control
US8387900B2 · kind B2 · utility
1Cited by
20References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2011 |
| Grant date | Mar 5, 2013 |
| Priority date | — |
| Expiry date | Jun 24, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M2200/9015
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel injector apparatus comprising a piezoelectric driving stack and injector assembly wherein a flow control member of the fuel injector apparatus is driven directly by the piezoelectric stack without additional amplification means or interposing elements while the flow area of the nozzle portion is variably adjustable to deliver controlled flow rates in a desired flow profile to improve engine performance and reduce emissions. The injector configuration is adapted to support required flow rates with minimal linear movement of the flow control member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.