Valve needle for an electromagnetically actuable valve and method for manufacturing the valve needle

US5566920A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Peter Romann · Stuttgart, DE
• Ferdinand Reiter · Markgröningen, DE
• Martin Maier · Asperg, DE
• Thomas Naeger · Offenburg, DE

Key dates

• Filing date: May 11, 1994
• Grant date: Oct 22, 1996
• Expiry date: May 11, 2014

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M2200/8046
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A valve needle suitable for injection valves for fuel injection systems of internal combustion engines. The new valve needle includes a tubular actuation part, an armature section and a valve sleeve section and is manufactured by injection moulding and subsequent sintered according to a metal injection moulding method. Subsequently, the actuation part is connected to a valve closing element section by means of a weld connection such that the valve needle is manufactured in a simple and cost-effective manner.