Daimler Chrysler Ag

Daimler Ag

Hans-Juergen Weimann

Matthias Pfau

Kai Kanning

Ruediger Herweg

Jochen Schaeflein

Goetz Brachert

A method for operating a four stroke internal combustion engine in which the combustion position can be set/controlled/corrected. The phase position of intake and/or exhaust phase is shifted for this purpose. Compression ignition takes place at part-load, and spark ignition takes place at full load. In the event of a load change in the part-lead range, the theoretical shift in the combustion position is compensated by the shift in phase position of the intake and/or exhaust phase.

Method for operating an internal combustion engine

Disclosed is a method for operating an internal combustion engine, wherein fuel is injected in a pre-injection and main injection process. According to the invention, pre-injection occurs in the intermediate compression stroke of the internal combustion engine. Main injection is carried out in an intake synchronous manner. The invention can be used for internal combustion engines, particularly for passenger cars and commercial vehicles.

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Oppenweiler, Germany

Hans-Juergen Weimann