Injection system, and method for the production of an injection system

US8459232B2 · kind B2 · utility

Assignee

• CONTINENTAL AUTOMOTIVE GMBH · DE

Inventors

• Fredrik Borchsenius · Donaustauf, DE
• Uwe Jung · Hungersacker, DE
• Grit Krüger · Regensburg, DE
• Eberhard Kull · Brackenheim, DE
• Volker Mohr · Regensburg, DE

Key dates

• Filing date: Aug 4, 2008
• Grant date: Jun 11, 2013
• Expiry date: Apr 21, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49405
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

An injection system for injecting fuel has an actuator, a pilot valve with a valve mushroom, and a supply throttle. The control chamber encompasses a control piston, a first discharge throttle, a first sealing edge for forming a first sealing seat along with the valve mushroom, a second sealing edge of a piston chamber with a valve piston, the second sealing edge forming a second sealing seat along with the valve piston during a maximum actuator working lift for sealing the piston chamber and the valve chamber from each other; and a second discharge throttle connecting the piston chamber to the low-pressure zone between the first and the second sealing edge, wherein d1>d2>d3, d1 are the minimum diameter of the first discharge throttle, d2 being the minimum diameter of the second discharge throttle, and d3 being the minimum diameter of the supply throttle.