Fuel injection nozzle for internal combustion engines
US5788161A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 1995 |
| Grant date | Aug 4, 1998 |
| Priority date | — |
| Expiry date | Dec 15, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M61/047
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel injection nozzle for internal combustion engines has a holding body with a protruding fixed nozzle needle whose terminal portion, has a valve cone, an annular valve diaphragm cooperates in valve-like fashion. The valve diaphragm is fastened by its outer peripheral portion against the holding body with a union nut, and the edge surrounding the opening is resiliently pressed with initial tension against the valve cone. In order to keep the strains occurring in the stroke, generated by bending, of the valve diaphragm low over its entire region, the valve diaphragm has a bulge oriented counter to the stroke direction. The bulge is preferably composed of an annular region of steep slope (.alpha.) adjoining the fastened outer peripheral region, and an annular region of flat slope (.beta.) extending from it toward the opening. The bulge may also be conical or dome-shaped. In order to limit the stroke of the valve diaphragm, a stroke stop shim is provided, which is firmly fastened to the holding body, together with the valve diaphragm, by the union nut. The form of the injection stream is varied by the form of the end portion of the nozzle needle and the form of the flow opening of …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.