Fuel injection system for an internal combustion engine

US6619263B1 · kind B1 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Bernd Mahr · Plochingen, DE
• Martin Kropp · Ditzingen, DE
• Hans-Christoph Magel · Pfullingen, DE
• Wolfgang Otterbach · Stuttgart, DE

Key dates

• Filing date: Aug 20, 2001
• Grant date: Sep 16, 2003
• Expiry date: Aug 20, 2021

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M63/0007
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

In a fuel injection system for an internal combustion engine, in which the fuel pumped by means of a high-pressure pump can be injected into the combustion chamber of the engine at at least two different, high fuel pressure via injectors, between the high-pressure pump and the injectors, at least one central pressure booster unit for all the injectors is provided. The pressure booster unit is triggerable in a targeted way as need, and as a result the fuel which is at the higher pressure can be better regulated in quantity, and the losses from friction can be reduced accordingly as well.