The paper deals with the issues of establishing the relationship between the loads experienced by the drive and power equipment of the passenger Elevator, with a number of random variables that determine the mode of operation of the Elevator equipment in each cycle. The structure of the algorithm for the formation of accumulated loads and their equivalent value during a given period of operation is substantiated. The proposed method can be used as a simulation model in determining the required amount of repair impacts in the maintenance of passenger elevators

Keywords: elevator, floor, maintenance, cycle, mode, equivalent load

The article presents materials on the study of increasing the operational life of steel ropes. The methods of lubrication of steel ropes, as well as the resistance characteristics of the applied lubricants, under various operating conditions, were studied. An experimental study of the effect of molybdenum disulfide on the operational characteristics of steel ropes. The concept of a useful model for the formation of a surface layer of a solid lubricant coating based on molybdenum disulfide on steel ropes in the process of their production is proposed.the mode of operation of the Elevator equipment in each cycle. The structure of the algorithm for the formation of accumulated loads and their equivalent value during a given period of operation is substantiated. The proposed method can be used as a simulation model in determining the required amount of repair impacts in the maintenance of passenger elevators

Keywords: steel rope, rope lubrication solid lubricants, vibration mechanochemical solid lubricant coating, molybdenum disulfide, utility model

The article deals with the analysis of theoretical cycles of internal combustion engines. Presents Otto cycle, Diesel and Sabate-Trinkler. The theoretical cycle is a closed cycle occurring in the cylinders of the piston engine with its inherent features and assumptions. Each cycle is characterized by two main indicators, such as heat use and efficiency. In this case, the thermal utilization is determined by the thermal efficiency. The estimation of influence of thermodynamic factors on change of thermal efficiency for reception of the best efficiency and the maximum specific work of cycles is resulted. The thermal efficiency of the mixed cycle is obtained. The conclusions of the influence of the compression ratio on the thermal efficiency are presented. A comparison' of different theoretical cycles from the point of view of their cost-effectiveness and efficiency under the same conditions.

Keywords: internal combustion engine, ideal cycle, thermal efficiency, thermal processes