Determining a fuel evaporating of a lubricant within an internal combustion engine and lambda - value - adaptation on the basis of the determined fuel evaporating

摘要

A method for determining the amount of a fuel evaporating of a lubricant, which is in a housing of an internal combustion engine is located, in an intake tract of the internal combustion engine, the method comprisingAdjustment of a first purge stream by the housing,Measuring a first output value of a lambda controller of the internal combustion engine,Adjustment of a second purge stream through the housing, wherein the second stream in comparison to the first stream has a different velocity,Measuring a second output value of the lambda regulator of the internal combustion engine,Determining the quantity of fuel evaporating on the basis of the measured first output value and the measured second output value andDetermining a current utilization of the internal combustion engine.the method is carried out only when the current utilization of the internal combustion engine is an average rate of utilization and / orDetermining a current speed of the internal combustion engine.the method is carried out only when the current speed of the internal combustion engine is within a middle range of speeds of rotation.