Electromagnetically operable valve

US5732888A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Martin Maier · Asperg, DE
• Norbert Keim · Besigheim, DE
• Ferdinand Reiter · Markgröningen, DE
• Jorg Heyse · Markgröningen, DE

Key dates

• Filing date: Aug 9, 1995
• Grant date: Mar 31, 1998
• Expiry date: Aug 9, 2015

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M2200/9061
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

An electromagnetically operable valve includes at least one component part, e.g. the armature, which possesses, prior to the application of a wear resistant coating, a wedged surface, which is in each case variably creatable in accordance with a magnetic and hydraulic optimum. The annular impact segment formed by the wedging possesses a defined impact face width or contact width which remains constant throughout the service life, since any wearing of the impact face does not lead, in continuous running, to an enlargement of the contact. The valve is particularly suitable for use in fuel injection systems of explosion-type, spark-ignition combustion engines.