Fuel injection valve for internal combustion engines

US5899385A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Karl Hofmann · Neckarrems, DE
• Johann Warga · Bietigheim-Bissingen, DE
• Thomas Kuegler · Ditzingen, DE
• Peter Kuegel · Bursa, TR
• Güngör Yurtseven · Bursa, TR

Key dates

• Filing date: Jun 13, 1997
• Grant date: May 4, 1999
• Expiry date: Jun 13, 2017

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M61/16
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A fuel injection valve for internal combustion engines that has a valve member which is guided axially displaceably in a guide bore of a valve body and which on an end toward the combustion chamber has a valve sealing face that cooperates with a valve seat face, formed on an end of the guide bore toward the combustion chamber, for controlling the communication between a high-pressure conduit in the valve body and at least one injection opening A diversion conduit in the valve member, by way of which diversion conduit the high-pressure conduit can be made to communicate with a relief chamber when the valve member has lifted from the valve seat face. Once the maximum opening stroke of the position of the valve member is reached, the diversion conduit is closed by a sealing face provided on the valve member, so that the entire supplied fuel quantity can attain injection.