Method of controlling an internal combustion engine

US7305972B2 · kind B2 · utility

Assignee

• KTU Friedrichshafen GmbH · DE

Inventors

• Albert Kloos · Friedrichshafen, DE
• Michael Willmann · Bermatingen, DE
• Gunther Schmidt · Biberach, DE
• Ralf Speetzen · Friedrichshafen, DE
• Stefan Müller · Wetzlar, DE
• Andreas Kunz · Ladenburg, DE

Key dates

• Filing date: Aug 7, 2006
• Grant date: Dec 11, 2007
• Expiry date: Aug 7, 2026

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02D2041/224
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

In a method of controlling an internal combustion engine having a common rail fuel injection system including individual fuel storage chambers, wherein the pressure pattern of the fuel supplied to each injector can be determined and actual and virtual fuel injection ends and fuel injection begins are determined, the deviations from the desired fuel injection ends and from the fuel injection begins are calculated and the injectors are evaluated on the basis of the deviations and further control of the internal combustion engine is based on an evaluation of the fuel injectors.