Method for operating an internal combustion engine

US7284531B2 · kind B2 · utility

Assignee

• Daimlerchrysler AG · US

Inventors

• Götz Brachert · Stuttgart, DE
• Rudiger Herweg · Eßlingen, DE
• Kai Kanning · Stuttgart, DE
• Matthias Pfau · Meiningen, DE
• Jochen Schäflein · Stuttgart, DE
• Hans-Jurgen Weimann · Oppenweiler, DE

Key dates

• Filing date: Mar 24, 2006
• Grant date: Oct 23, 2007
• Expiry date: Mar 24, 2026

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/40
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

In a method for operating an internal combustion engine in which the fuel is injected into a combustion chamber of a pre-injection and a main injection quantity, the quantity of fuel for the pre-injection, which is selected depending on the combustion location, is injected before the top dead center of the gas exchange, and the fuel for the main injection is injected synchronously with the induction of the air. The method is used in connection with internal combustion engines, in particular for passenger and commercial motor vehicles.