Valve closing body and process and device for producing sealing seats on valve closing bodies
US5890659A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 1997 |
| Grant date | Apr 6, 1999 |
| Priority date | — |
| Expiry date | Jun 26, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M2200/16
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A new process in which a valve closing body is produced with a predetermined inclination in relation to a longitudinal tool axis. The valve closing body is set in rotation and thereby carries out a precessing motion so that the tool body that rests against the sealing seat produces a narrow ball zone that always assures a sealing contact between the sealing seat and the valve seat face, even when a valve closing body is guided in the valve with guidance play. The process and the device are particularly suited for machining sealing seats on valve closing bodies of fuel injection valves for fuel injection systems of internal combustion engines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.