Fuel injection valve

US6494388B1 · kind B1 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Martin Mueller · Heubach, DE
• Ralf Trutschel · Naumburg, DE
• Martin Buehner · Backnang, DE
• Peter Land · Dayton, US
• Helmut Hennemann · Scheßlitz, DE
• Norbert Keim · Besigheim, DE
• Ulrich Klingner · Ditzingen, DE
• Martin Andorfer · Ditzingen, DE

Key dates

• Filing date: Dec 22, 2000
• Grant date: Dec 17, 2002
• Expiry date: Dec 22, 2020

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M61/1806
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A fuel injector, in particular a high-pressure injector for directly injecting fuel into a combustion chamber of a mixture-compression, spark-ignition internal combustion engine, which is characterized in that on a valve seat element a conical section is formed having a valve seat surface, to which an outlet opening is immediately connected on the downstream side. The outlet opening has an intake plane, an outlet plane, and a central axis, the central point of the intake plane being offset with respect to the valve longitudinal axis and the central axis running diagonally with respect to the valve longitudinal axis. Upstream of the valve seat element a disk-shaped swirl element is arranged, which can be used both for generating a right swirl as well as a left swirl.