Abstract
At operation of KAMAZ motor vehicles a significant number of failures (40–55 %) are attributed to engine, among the elements of which a cylinder and piston group often breaks down. One of the effective ways to increase the wear resistance of rubbing parts of the engine is the modification of lubricating medium by special abovebase additives, among which nanoscale powders are widely distributed. The paper is devoted to investigation of influence of the «Klaster-V» nanoadditive that is developed for motor oil in order to increase life of a «piston ring — cylinder liner» interface of KAMAZ motor vehicles. As a parameter of technical condition of the interface the authors have assumed a value of a gap between a piston ring and a cylinder liner of an internal combustion engine. Results of operational tests show that the forecasting residual life of the «piston ring — cylinder liner» interface of diesel engines tested on oil with «Klaster-V» additive have increased by 2.15 times on average in comparison with the residual life of diesel engines operated on Lukoil 15W40 motor oil.
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