A method to calculate the global degradation of a lubricant oil and device for determining the state of deterioration of a lubricant oil

摘要

The present invention provides a method and a device for determining the degradation of a used oil. The method of the invention is based on calculating the components in the red, green and blue transmission spectral bands I R 0 ,I G 0 and I B 0 of the unused oil, carrying out a number of measurements of the transmittance of the same oil after use, calculating the colour indices of the used oil and the reference colour index as and obtaining the overall degradation value as OD(%)=100-100*LOG 10 (CI REF /CI). By virtue of the method and the corresponding device, real-time monitoring of oil degradation is facilitated.