Electromagnetically controlled valve

US5975436A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Ferdinand Reiter · Markgröningen, DE
• Hubert Stier · Asperg, DE

Key dates

• Filing date: Apr 6, 1998
• Grant date: Nov 2, 1999
• Expiry date: Apr 6, 2018

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M51/0671
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

The electromagnetically actuatable valve includes a valve seat support and a valve needle, both of which are of elongated configuration As a result, the spray discharge point of the valve is advantageously set far forward, which makes possible highly targeted spray discharge. A joining part joining the armature and the valve closure element is configured as a punched and bent part, and has over the majority of its axial extension an open profile differing from a circular cross section. The valve needle thus possesses a mass which is lower as compared with conventional valve needles of identical overall size. The valve is particularly suitable for use in a fuel injection system of a mixture-compressing, spark-ignited internal combustion engine.