Method for determining material composition of operating fluid in operating fluid container for combustion engine, involves transmitting transmission signal by operating fluid with selected complex transmission amplitude spectrum

摘要

The method involves transmitting a transmission signal by an operating fluid (2) with a selected complex transmission amplitude spectrum from a transmission unit (7) to a receiving unit (8). The transmission signal receives by the receiving unit as receiving signal. A material composition of the operating fluid is determined on the basis of the complex transmission amplitude spectrum and the complex receiving amplitude spectrum of a receiving signal, where the receiving signal is received from the receiving unit. An independent claim is included for a device for determining a material composition of an operating fluid in an operating fluid container for a combustion engine.