Fuel injection system

US6622693B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Stefan Arndt · Stuttgart, DE
• Werner Herden · Gerlingen, DE

Key dates

• Filing date: Jul 10, 2002
• Grant date: Sep 23, 2003
• Expiry date: Jul 10, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/12
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A fuel injection system for internal combustion engines comprises a fuel injector that injects fuel into a combustion chamber, the combustion chamber being delimited by a cylinder wall in which a piston is guided, and a spark plug that protrudes into combustion chamber. The fuel injector produces a conical mixture cloud in the combustion chamber through at least one row of injection orifices arranged circumferentially on a valve body of the fuel injector. The valve body also provides a centrally arranged injection orifice that produces a central area of the mixture cloud directed towards the spark plug.