Lean idle operation for particle number reduction

摘要

The invention relates to an operating method for a device (V), with an internal combustion engine, which is operable in a lean operation and a stoichiometric operation, a crankcase (1), at least one combustion chamber (4) and preferably a throttle element (11) via the charge air from an intercooler to the combustion chamber (4) can be supplied, wherein the internal combustion engine is switched to a lean operation at idle and operated in lean operation, so that in particular the pressure difference between the crankcase (1) and the combustion chamber (4) is reduced.