Taran I. Scientific Background of Innovative Technology for Advanced Transmission of Mine Diesel Locomotive

The thesis concerns solution of the current scientific and applied problem of identifying relationship between shaping and transmitting power streams within transmission elements. Double-stream transmissions widely used in the world of ma-chine-building have higher efficiency if compared with fully streamed ones. How-ever, they are characterized by modes of power circulation that need to find out regu-larities of distribution of the power streams resulting in significant limitations in the structure and kinematic scheme of the transmission. The dependencies of the circular transmission number of a closed circuit of hydromechanical transmission on the nature of power stream variation are identified, taking into account losses and efficiency of the hydraulic transmissions, as well as conditions of circular and noncircular operating modes of double-stream hydrome-chanical gears are determined and proved for the case when planetary mechanism on entry and exit to be extremely important while choosing variator type. Owing to the lack of power circulation in the transmission, wherein planetary mechanism is situ-ated on the entry, such continuously variable transmissions under the research are more advanced. As a result of solving the task aimed at identifying the most efficient design and exploitation parameters of the infinitely variable double-stream transmissions, the dominating conditions for re-distribution of power streams along the transmission branches were identified to obtain maximum efficiency, and the innovative original technical solutions aimed at updating transmission of a mine diesel locomotive are disclosed in the patents of Ukraine.