Bounce-free magnet actuator for injection valves

US7354027B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Michael Mennicken · Wimsheim, DE
• Joachim Boltz · Schwieberdingen, DE

Key dates

• Filing date: Dec 12, 2003
• Grant date: Apr 8, 2008
• Expiry date: Dec 12, 2023

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M2200/304
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a magnet valve for actuating a fuel injector, having a magnet core and magnet coil received in the core. A closing spring acts on the magnet armature in the closing direction. An outlet gap for an actuating fluid is formed between a face end of the stop sleeve, oriented toward the magnet armature, and the magnet armature itself. The outlet gap discharges into a hydraulic damping chamber, which is defined by a face end of the magnet armature and by a damping face of the non-magnetic material.