Method For Operating An Internal Combustion Engine

A fuel and intake air supply control device for an internal combustion engine configured to control a supply of a fuel mixture into a combustion chamber of the engine, comprising:

• a first means for determining an initial fuel oxidizer ratio threshold (iFORlimit) for a fuel mixture to be supplied to a combustion chamber of the engine, and
• a second means for determining a demanded fuel oxidizer ratio (dFOR) of the fuel mixture to be supplied to the combustion chamber of the engine,
• wherein the fuel and intake air supply control device is configured to, if the demanded fuel air oxidizer (dFOR) exceeds the initial fuel oxidizer ratio threshold (iFORlimit), temporally operate the engine in a raised response mode, in which a fuel oxidizer ratio threshold is increased from the initial fuel oxidizer ratio threshold (iFORlimit) to a raised fuel oxidizer ratio threshold (rFORlimit), and to supply a fuel mixture having the demanded fuel oxidizer ratio (dFOR) into the combustion chamber of the engine.