Fuel injection

US6789752B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Guenter Dantes · Eberdingen, DE
• Detlef Nowak · Untergruppenbach, DE

Key dates

• Filing date: Dec 13, 2002
• Grant date: Sep 14, 2004
• Expiry date: Feb 2, 2023

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 injector, in particular for the direct injection of fuel into the combustion chamber of a mixture-compressing, externally fired internal combustion engine, comprising, upstream from a valve-seat surface, a swirl disk provided with swirl channels from which, given an open fuel injector, the fuel flows with a circumferential speed into a swirl chamber which is also located upstream from the valve-seat surface. Each point downstream from the swirl disk (35) through which a flow is to pass has a larger extension in every spatial direction than the diameter of the swirl channels.