eng Oriental Scientific Publishing Company Biosciences Biotechnology Research Asia 0973-1245 2016-06-25 13 2 815 819 10.13005/bbra/2101 11030 article Ildar Ilgizarovich Salakhov 1 Ildus Rifovich Mavleev 1 Radik Fanisovich Ildarkhanov 1 Eduard Nikolaevich Tsybunov 1 Naberezhnochelninsky Institute (branch) Kazan Federal University, Russian Federation, 423812, Naberezhnye Chelny, pr.Syuyumbike, 10A, The author has carried out the analysis of dynamic-coupled automatic transmissions and regarded the prospects of their application and development. New design of continuously variable transmission based on differential hydra-mechanical gear train was developed and covered by RF patents No2298125 and No2347966. Principles of work performance for high-torque differential hydra-mechanical gear train based on interoperation equableness of moments opposing one another that are produced at the gear carrier owing to inner forces of differential stages as well as self-actuated pressure variation and hydraulic fluid consumption change when it comes through hydraulic pump and hydraulic actuator. https://www.biotech-asia.org/vol13no2/determination-of-the-efficiency-of-the-hydro-mechanical-differential-variator/ hydra-mechanical gear train; continuously variable transmission; differential hydra-mechanical variator; mechanical diagram; high-torque differential hydra-mechanical variator