Deep pocket seat assembly in modular fuel injector with unitary filter and O-ring retainer assembly and methods
US7389952B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 2, 2005 |
| Grant date | Jun 24, 2008 |
| Priority date | — |
| Expiry date | Mar 9, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/4984
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel injector and various methods relating to the assembly of the fuel injector. The fuel injector includes a power group subassembly and a valve group subassembly having a respectively connected first and second connector portions. The power group subassembly includes an electromagnetic coil, a housing, at least one terminal, and at least one overmold formed over the coil and housing. The valve group subassembly insertable within the overmold includes a tube assembly having an inlet tube and a filter assembly and sealing ring proximate the inlet tube. A pole piece couples the inlet tube to one end of a non-magnetic shell having a valve body coupled to the opposite end. An axially displaceable armature assembly confronts the pole piece and is adjustably biased by a member and an adjusting tube toward engagement with a seat assembly. The seat assembly includes a flow portion and a securement portion having respective first and second axial lengths at least equal to one another.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.