METHOD AND CONTROL UNIT FOR OPERATING A SPARK-IGNITION INTERNAL COMBUSTION ENGINE OR A DUAL-FUEL INTERNAL COMBUSTION ENGINE OPERATED IN THE SPARK-IGNITION MODE

摘要

A method for operating a spark-ignition internalcombustion engine (1) or a dual-fuel internalcombustion engine (1) operated in the spark-ignitionoperating mode, wherein the internal combustion engine(1) to be operated is supplied with lubricating oil viaan oil circuit (3), wherein a measurement value of thetotal base number and/or a measurement value of theoxidation of the lubricating oil currently used in theoil circuit (3) for the lubrication is detected,wherein dependent on the established measurement valueof the total base number and/or dependent on theestablished measurement value of the oxidation anexchange oil quantity for the oil circuit (3) isdetermined, wherein currently used lubricating oil toan extent corresponding to the exchange oil quantity isremoved from the oil circuit (3), wherein newlubricating oil to an extent corresponding to theexchange oil quantity is supplied to the oil circuit(3). Fig. 1