Review article

This article discusses the methods of engine oil control during vehicle operation. A new approach is proposed to assess the reduction in the engine performance: by monitoring the concentration of metals of the parts of the main interfaces that get into the oil, which makes it possible to determine the change in the intensity of wear of rubbing surfaces. It is determined that the wear rate of most parts (within one oil change) is linear, and only an increase in the concentration of aluminum and iron in engine oil is exponential. Therefore, it is necessary to control the concentration of aluminum and iron in real time, which in practice will make it possible to introduce an intelligent maintenance system and significantly increase the technical and economic performance of vehicles.