Method for operating a system for carrying out a thermodynamic cycle, system for carrying out a thermodynamic cycle and arrangement with such a system and an internal combustion engine

摘要

The invention relates to a method for operating a system (3) for carrying out a thermodynamic cycle, wherein an expansion device (13) of the system, a lubricant for lubricating the expansion device (13) is supplied, wherein one of the expansion means (13) supplied amount of lubricant by means of at least one Control valve means (33, 33 ', 33' ') is set, and wherein a lubricant quality of the lubricant on the basis of the expander (13) supplied amount of lubricant and a state of the at least one control valve means (33, 33', 33 '') is monitored.