Electromagnetic fuel injector
US4046112A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 20, 1975 |
| Grant date | Sep 6, 1977 |
| Priority date | — |
| Expiry date | Oct 20, 1995 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M57/025
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An electromagnetic fuel injector with a differential pressure actuated injector valve therein to control fuel injection is supplied with fuel at a predetermined supply pressure, the injector having incorporated therein a hydraulic fluid (fuel) powered booster pump means operable to increase the pressure of fuel from the original supply pressure to a higher injection pressure for effecting operation of the injector valve, the flow of hydraulic fluid (fuel) to effect operation of the booster pump means being controlled by a solenoid actuated valve means controlling inlet and discharge of fuel to a fluid control chamber in communication with the power piston of the booster pump through a control or metering orifice of predetermined size, whereby the rate of pressure intensification of fuel to the injector valve is controlled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.