Actuator and valve assembly for a hydraulically-actuated electronically-controlled injector
US5271371A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 1993 |
| Grant date | Dec 21, 1993 |
| Priority date | — |
| Expiry date | Mar 22, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86614
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An actuator and valve assembly for a hydraulically-actuated electronically-controlled unit injector is disclosed which comprises an electrically-energizable actuator including a movable member and a poppet valve connected to the movable member. The poppet valve has a first seat and a second seat and is movable along an axis between first, second and third positions. The assembly further comprises a device for biasing the poppet valve towards its first position and a device for accommodating misalignment of the first and second seats relative to the axis. The poppet valve is advantageous because it has high fluid flow control capability in a one-piece single-stage configuration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.