Stroke-controlled valve as fuel metering device of an injection system for internal combustion engines

US6945479B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Peter Boehland · Erbach, DE
• Godehard Nentwig · Stuttgart, DE

Key dates

• Filing date: Jun 4, 2003
• Grant date: Sep 20, 2005
• Expiry date: Jun 6, 2023

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M2547/006
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A stroke-controlled valve as a fuel metering device of an injection system for internal combustion engines has a valve body with a valve seat and a valve needle which is actuatable in the valve body counter to the resistance of a valve needle restoring spring and which has a sealing edge that cooperates with the valve seat. A coupling body with a greater mass than the valve needle is disposed in the valve body, in the axial extension of the valve needle, and is movable coaxially to the valve needle and is actuatable by the valve needle during the opening stroke of the valve needle.