Electromagnetic fuel injection valve for an internal combustion engine having a plurality of intake valves
US4657189A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Mar 10, 1986 |
| Grant date | Apr 14, 1987 |
| Priority date | — |
| Expiry date | Mar 10, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S239/90
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An electromagnetic fuel injection valve for an internal combustion engine having a valve body with a single fuel injection hole and a plurality of injected fuel paths. A meeting portion of the injected fuel paths is provided downstream of the fuel injection hole and upstream of the injected fuel paths. A wall of the meeting portion is formed to have an inner transverse dimension not smaller than a total corresponding transverse dimension of walls of the injected fuel paths. An injected fuel dividing portion provided below the fuel injection hole has an upwardly facing sharp edge. These structures enable a smooth flow and a smooth division of the injected fuel. Desirably, a length (L) of the injected fuel paths, an equivalent diameter (Di) of the injected fuel path, a diameter (d) of the fuel injection hole and a number (n) of the injected fuel paths have the following relationships: EQU 30.gtoreq.n(Di/d).sup.2 .gtoreq.20 EQU 3.gtoreq.L/Di.gtoreq.1 Also desirably, an angle made in a bottom surface of the meeting portion is set not larger than twice the angle, with respect to the horizontal, at which the fuel injection valve is mounted on the internal combustion engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.