SUBSTANTIATION OF THE POTENTIAL FOR INCREASING THE ENGINE OIL CHANGE INTERVAL OF THE KAMAZ R-6 ENGINE

Abstract. The article is devoted to solving the actual scientific and practical problem of substantiating at the design stage the potential for increasing the frequency of maintenance of an automobile diesel engine, which is distinguished by an improved design, improved indicators of reliability, efficiency, environmental friendliness and quality of the operating materials used. The general goal of scientific research is to reduce operating costs and increase the efficiency of using cars with high-tech engines by increasing the frequency of their maintenance. The solution of the problem within the framework of this article is to establish the factors that affect the potential for increasing the engine oil change interval, taking into account modern and future requirements for automotive diesel engines. The methodological apparatus for solving this problem consisted in an analytical study of many years of experience in designing, manufacturing, testing and operating engines of the KAMAZ V8 family, as well as engines from leading world manufacturers. It has been established that for modern high-tech automotive diesel engines, the potential for increasing the engine oil change interval is a combination of a set of factors, namely: the use of diesel fuel with a minimum sulfur content; reduction of heat stress of lubricated parts. The main results are that specific basic requirements have been formulated for engine oil, diesel fuel, design and manufacturing technologies for parts, assemblies, diesel engine systems to increase the frequency of maintenance and oil change intervals for engines of the new KAMAZ R6 family. The scientific novelty lies in the fact that a complex of factors has been identified, the combination of which affects the reduction in the rate of deterioration of the quality indicators of engine oil, taking into account which allows increasing the intervals for its replacement during the operation of a diesel engine. The theoretical value for the development of the branch of science “Operation of road transport” lies in the fact that the identified factors and relationships contribute to the study and improvement of the processes of organizing car maintenance, which helps to increase their operational reliability and operational efficiency. The direction of further research is the solution of the following complex task — bench and operational tests of the engine of the new KAMAZ R6 family to confirm the validity of the potential for increasing the frequency of maintenance.