Solenoid stator assembly for electronically actuated fuel injectors and method of manufacturing same
US5155461A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 1991 |
| Grant date | Oct 13, 1992 |
| Priority date | — |
| Expiry date | Feb 8, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/4902
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A solenoid stator assembly for electronically actuated fuel injectors is disclosed as having an E-shaped stator core including a top portion and three parallel pole pieces extending orthogonally therefrom. The outer pole pieces each have an outermost side, and each of the three pole pieces has a distal end, a face being formed across the distal end. Each of the outer pole pieces has an attachment slot formed across its outermost side proximate its distal end. A coil of electric wire is disposed around an insulating spool disposed on the central pole piece, and leads from the coil are connected to terminals. A flange on one end of the spool exerts outward forces on the outer pole pieces, prestressing them to resist further flexing caused by outwardly directed forces applied by errant fuel under pressure. An insulating cover is molded around the solenoid stator assembly, enveloping it except for portions of the terminals and the faces of the pole pieces, the cover being bonded to at least the stator core. The cover is molded into the attachment slots in the outer pole pieces to enhance adherence of the cover material to the stator core and provide a barrier to any tendency of errant …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.