Fuel injection valve

US6273349A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Dirk Fischbach · Bamberg, DE
• Michael Bitter · Bietigheim-Bissingen, DE
• Rainer Kocik · Charleston, US
• Gunter Dantes · Eberdingen, DE
• Detlef Nowak · Untergruppenbach, DE
• Jorg Heyse · Markgröningen, DE
• Albert Staacke · Steinheim, DE
• Michael Klaski · Bornsteiner Straße, DE

Key dates

• Filing date: Dec 8, 1999
• Grant date: Aug 14, 2001
• Expiry date: Dec 8, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/12
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A fuel injection valve is described which has a swirl disk downstream from a valve seat, the swirl disk being made of at least one metallic material, having at least two swirl channels opening into a swirl chamber, and in which all layers are adheringly deposited directly one on top of the other by electroplating (multilayer electroplating). The swirl disk is installed in the valve so that the surface normal to its surface forms an oblique angle other than 0.degree. with the longitudinal valve axis, so that a jet angle .gamma. with respect to the longitudinal valve axis is formed due to the orientation of the swirl disk. The fuel injection valve is particularly well suited for direct injection of fuel into the combustion chamber of a compressed mixture externally ignited internal combustion engine.