Electromagnetic fuel injector
US4360161A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 28, 1980 |
| Grant date | Nov 23, 1982 |
| Priority date | — |
| Expiry date | Nov 28, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S239/90
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A high flow rate electromagnetic fuel injector valve with a rapid response time is disclosed for utilization in electronic fuel injection systems. The fuel injector valve comprises a stator means and a valve assembly having a self-centering valve member reciprocally mounted in a valve housing. The valve member consists of a ball valve with a semispherical sealing surface connected by a stem to a magnetically attractable cup-shaped armature. The armature is preferably coated with a friction reducing material where it slideably contacts an armature guide bore of the injector valve during its reciprocation. The ball valve of the valve member obturates an exit orifice of the valve housing by sealing against a conical valve seat which has been coined to receive it. Adjacent to the ball valve and conical valve seat interface are vortex generating and metering orifices for the tangential entry of fuel into a swirl chamber of the valve housing. The positioning of the metering orifices, which are precisely sized by ballizing to control flow rate, is used to regulate the injector spray angle generated by the vortex of fuel entering the swirl chamber. The conical surface of the valve seat pro…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.