Nozzle plate, particularly for injection valves and processes for manufacturing a nozzle plate

US5730368A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Gottfried Flik · Leonberg, DE
• Guenter Dantes · Eberdingen, DE
• Gilbert Moersch · Stuttgart, DE
• Detlef Nowak · Untergruppenbach, DE
• Jorg Heyse · Markgröningen, DE

Key dates

• Filing date: May 30, 1996
• Grant date: Mar 24, 1998
• Expiry date: May 30, 2016

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S239/90
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

The nozzle plate according to the present invention includes an axial passage for a fluid, particularly for a fuel, which is made up in the downstream direction by a filter, a ring chamber and an uninterrupted ring gap following one another. Using this arrangement, a cohesive tulip-shaped jet lamella can be produced which thins out in the downstream direction and then disintegrates into tiny droplets. As a consequence, the exhaust emission of an internal combustion engine can be further reduced and likewise a reduction of the fuel consumption can be achieved. The nozzle plate is suited particularly for injection valves in fuel injection systems of internal combustion engines with externally supplied ignition which compress the mixture.