Daimler Chrysler Ag

Daimler Ag

Matthias Klingebiel

Frank Duvinage

Heiko Sass

Ruediger Pfaff

Roland Lütze

Lothar Welte

Helko Sass

In a method of operating an internal combustion engine of a motor vehicle during an engine warm-up phase, the engine having a cylinder including a piston defining in the cylinder a combustion chamber, wherein fuel is injected into the combustion chamber in a pilot injection, a main injection and, selectively, a post-injection, and during the heat-up phase of the engine, the center position of the combustion is retarded relative to a center position of the combustion in the normal engine operating mode in order to more rapidly heat the engine and the coolant in the engine cooling circuit for rapid heating of the passenger compartment of the motor vehicle.

Method of operating an internal combustion engine in an engine warm-up phase

In a method for operating an internal combustion engine, and a motor vehicle to be heated by the engine coolant, wherein the internal combustion engine has a cooling circuit, a heating mode can be established in which operating parameters of the internal combustion engine, while satisfying required output set values, are set for the maximum possible introduction of heat into the coolant and the exhaust gas in order to reach or hold a desired coolant temperature.

Method for operating an internal combustion engine, and motor vehicle

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Waiblingen, Germany

Matthias Klingebiel