Method for operating an internal combustion engine and internal combustion engine

US9797364B2 · kind B2 · utility

Assignee

• Daimler AG · DE

Inventors

• Dietmar Bertsch · Aspach, DE
• Harald C. Ott · Wenham, US
• Uwe Schaupp · Wernau, DE

Key dates

• Filing date: Feb 15, 2014
• Grant date: Oct 24, 2017
• Expiry date: Jun 16, 2034

Classification

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

Abstract

A method for operating a combustion engine is disclosed. In an embodiment, the method includes: generating several sparks to ignite a fuel-air mixture in a combustion chamber by an ignition device of the combustion engine, determining a combustion duration of at least one of the sparks, detecting a deviation of an actual operation from a target operation of the combustion engine at least depending on the combustion duration, compensating for the deviation by implementing at least one measure which influences a combustion of the fuel-air mixture in the combustion chamber, determining the combustion duration of the chronological first of the sparks, allocating the first spark to a first spark type or to a second spark type depending on the combustion duration, and implementing the at least one measure if at least one value which characterizes a frequency of one of the spark types exceeds a threshold value.