Method for operating an internal combustion engine

US7047946B2 · kind B2 · utility

Assignee

• Daimlerchrysler AG · US

Inventors

• Lothar Herrmann · Schwäbisch Hall, DE
• Oliver Steil · Maikammer, DE

Key dates

• Filing date: Jan 10, 2005
• Grant date: May 23, 2006
• Expiry date: Jan 10, 2025

Classification

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

Abstract

In a method for forming a fuel/air mixture in a direct-injection internal combustion engine with a fuel injection nozzle arranged in each cylinder, a closing member of the fuel injection nozzle is moved from a closed position to an operating position by means of a control device at different speeds until the operating stroke is reached, in order to obtain optimum combustion, and a uniform concentration of the fuel particles introduced with increased impulse into the combustion chamber is achieved providing for the formation of a swirl with a constant symmetry and uniform distribution of fuel in the swirl.