Electromagnetic fuel injector nozzle assembly
US4164326A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 6, 1978 |
| Grant date | Aug 14, 1979 |
| Priority date | — |
| Expiry date | Apr 6, 1998 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M47/027
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An electromagnetic fuel injector nozzle assembly has a pressure balanced poppet valve controlled discharge outlet supplied with pressurized fuel, with a return spring normally maintaining the poppet valve in a closed position. An actuator cylinder means and plunger is incorporated in the nozzle assembly with the actuator plunger positioned therein to engage the poppet valve to effect outward opening movement thereof and has its end of the actuator cylinder means opposite the poppet valve supplied with pressurized fuel for hydraulic actuation of the plunger, while the opposite end of the actuator cylinder means, the end adjacent to the poppet valve, is supplied with pressurized fuel through a flow control throttling orifice and this end of the actuator cylinder is also connected via a modulated pressure passage, having a normally closed solenoid valve therein for controlling flow therethrough, to a low pressure drain passage whereby when the solenoid valve is closed, fluid pressure on opposite ends of the actuator cylinder is substantially balanced whereby to permit seating of the poppet valve by the return spring, and when the solenoid valve is open, a force unbalance will occur ac…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.