Electromagnetic unit fuel injector
US4129254A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 12, 1977 |
| Grant date | Dec 12, 1978 |
| Priority date | — |
| Expiry date | Sep 12, 1997 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B3/06
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An electromagnetic unit fuel injector for use in a diesel engine includes a pump, in the form of a cam actuated plunger reciprocable in a bushing, to supply fuel at high pressure to a variable volume pressure accumulator chamber and through a flow control orifice to a control chamber in supply flow communication with a fuel injection nozzle assembly having a pressure actuated injection valve controlling the injected charge of fuel from the unit. Flow through the control orifice into the control chamber is selectively controlled by an electromagnetic valve assembly which also selectively controls flow from the control chamber through a drain orifice to a low pressure fuel return or drain line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.