Valve for metering a fluid

US10738748B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Nico Herrmann · Rastatt, DE
• Andreas Schaad · Bruchsal, DE
• Joerg Abel · Gerlingen, DE
• Juergen Maier · Weitersweiler, DE
• Martin Buehner · Backnang, DE
• Matthias Boee · Ludwigsburg, DE
• Olaf Schoenrock · Schwieberdingen, DE
• Philipp Rogler · Stuttgart, DE
• Stefan Cerny · Bietigheim-Bissingen, DE

Key dates

• Filing date: Jun 21, 2017
• Grant date: Aug 11, 2020
• Expiry date: Aug 23, 2037

Classification

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

Abstract

A fluid metering valve includes a valve needle that is actuatable by an electromagnetic actuator that includes an armature guided on and along a longitudinal axis of the valve needle with a movement limited by a stop surface on the valve needle. A projection of an edge of the stop surface extends into a projection plane, perpendicular to the longitudinal axis and at which the armature and stop surface are in contact temporarily during operation, through an opening of a conduit of the armature, dividing the opening into an inner surface on one side of the projection and an outer surface on the other side of the projection. A fluid exchange between inside and outside of an area between the stop surface and armature is via a path through the inner surface, conduit, and outer surface when the armature is in contact with the stop surface at the projection plane.