Fuel injection valve
US6394367B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2001 |
| Grant date | May 28, 2002 |
| Priority date | — |
| Expiry date | Jun 26, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S239/90
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel injection valve includes an orifice plate having a plurality of discharge orifices formed therein. A valve seat is disposed upstream of the discharge orifices and has a cylindrical fuel passage formed therein. A fuel cavity is formed between the cylindrical fuel passage and the orifice plate directly above the discharge orifices. A valve member is supported for reciprocating movement into and out of contact with the valve seat. The fuel injection valve satisfies the inequalities&phgr;D1+&phgr;d<&phgr;P and t<&phgr;d wherein &phgr;D1 is the diameter of the cylindrical fuel passage, &phgr;d is the diameter of each discharge orifice, &phgr;P is the diameter of an imaginary circle passing through the center of each discharge orifice, and t is the depth in the axial direction of the fuel cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.