Apparatus and method for finishing fuel injector spray tips using EDM
US4639568A · kind A · utility
13Cited by
18References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 13, 1984 |
| Grant date | Jan 27, 1987 |
| Priority date | — |
| Expiry date | Jul 13, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49433
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Apparatus and a method are provided to form the interior of a fuel injector spray tip by use of a cold forming punch to form a V-shaped spray tip interior configured to reduce fuel dribble and thereafter finishing the interior by use of an EDM electrode to form precision valve seat and fuel sack surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.