Fuel injection device for internal combustion engines

US5823161A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Detlev Potz · Stuttgart, DE
• Guenter Lewentz · Hemmingen, DE
• Ralf Maier · Neuendorf, DE
• Stefan Kampmann · Bamberg, DE
• Uwe Gordon · Markgröningen, DE
• Andreas Kreh · Stuttgart, DE
• Nestor Rodriguez-Amaya · Stuttgart, DE

Key dates

• Filing date: Feb 25, 1997
• Grant date: Oct 20, 1998
• Expiry date: Feb 25, 2017

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M63/0225
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A fuel injection device for internal combustion engines, having a high-pressure fuel pump, which pumps fuel from a low-pressure chamber via a feed line into a high-pressure collection chamber that communicates via high-pressure lines with the individual injection valves that protrude into the combustion chamber of the engine to be supplied. In order for this system to make variable injection cross sections at the injection valves possible, these injection valves are embodied as injection valves with an outward-opening valve member, via whose controllable opening stroke motion in the direction of the combustion chamber, a variable injection cross section can be adjusted at the injection valve.