Split power Hydro-Mechanical Transmission with Power Circulation

摘要

Split power hydro-mechanical transmission includes an input shaft and an output shaft, a torque converter and a planetary gear, wherein the input shaft is connected to the turbine rotor and the ring gear or the sun gear, the pump rotor is connected to the sun gear or the ring gear, and the output shaft is connected to the planet carrier. This arrangement introduces strong positive feedback between the pump rotor and the turbine rotor, which results in large maximum torque ratio and large rate of growth of torque ratio, as well as large range of (naturally automatic) torque ratio variation.