Development of a stand for determining the friction forces in the details of the cylinder piston group of marine diesel

Piston rings are parts that directly affect the technical, operational and economic performance of the engine. The main function of piston rings is to ensure the tightness of the combustion chamber. This task is performed under difficult conditions (alternating loads and the speed of the piston, high temperature, friction, etc.). Piston rings affect not only the power, but also the efficiency of the engine, which largely depends on the efficiency of fuel combustion, thermal and mechanical losses associated with friction. Piston rings account for about 40-50% of all friction losses in the engine. And since the internal combustion engine (internal combustion engine) is an integral attribute of modern life, most scientific research is devoted to reducing the impact of various factors affecting diesel efficiency, efficiency and its service life. It is very difficult to determine the friction force of the cylinder piston group parts in ship conditions. Therefore, to measure the values of the friction force in operation, a stand has been developed that makes it possible to evaluate the interaction of piston rings with the "mirror" cylinder of a marine internal combustion engine. The research was carried out as part of a research project on the formation of the Fleet-Service-Ship Repair information technology platform for inland and river-sea navigation vessels (Scientific topic code 06/GZ-2025-05).