Valve for metering a fluid

US11359589B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Murat Ucal · Stuttgart, DE
• Andreas Glaser · Stuttgart, DE
• Axel Heinstein · Welzheim, DE
• Christian Suenkel · Altenkunstadt, DE
• Frank Mueller · Wiehl, DE
• Joerg Abel · Gerlingen, DE
• Marcel Behringer · Baunach, DE
• Martin Buehner · Backnang, DE
• Matthias Boee · Ludwigsburg, DE
• Norbert Redlich · Hirschaid, DE
• Peter Schramm · Erlangen, DE
• Stefan Cerny · Bietigheim-Bissingen, DE

Key dates

• Filing date: Oct 19, 2017
• Grant date: Jun 14, 2022
• Expiry date: Aug 29, 2038

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M63/0075
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A valve for metering a fluid is described, which is used, in particular, as a fuel injector for internal combustion engines, including an electromagnetic actuator and a valve needle actuatable by the actuator, an armature of the actuator being guided on valve needle, a stop element which limits a movement of the armature relative to the valve needle being situated on the valve needle, and the armature including a spring receptacle which is open toward the stop element and in which a spring supported on the stop element is inserted. The valve needle is guided via the armature and/or the stop element along a longitudinal axis of a housing. Furthermore, as viewed along the longitudinal axis, a length of the spring receptacle is smaller than a spring length of the spring in the non-actuated initial state.