engleski

On the feasibility of the power split type transmissions having independently controllable output speed

A power-split-type transmissions with independently controllable output speed were recently proposed. They are capable of converting a variable or constant input shaft speed into a controllable output shaft speed that is independent of the input speed. The innovative transmission which consists of two planetary gear trains with three rotating shafts connected in parallel using two ordinary gear drives, has aroused a great deal of public interest among professionals. This paper posits that the proposed type of transmission would only be viable with four external shafts, i.e. the input power should be distributed to three output shafts: the shaft with controllable speed that is independent of the input shaft speed, the control generator shaft and the “free” shaft with a speed coherent to the input speed, the power of which is difficult to manage

planetary gear train; feasibility; base gear ratio; torque ratio

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