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The paper presents some recommendations for the study of the possibilities offered by an existent kinematic scheme of a planetary transmission. First, some constructive characteristics of planetary units are obtained so that the realizable transmission ratios of the gearset to represent the best approximation of the wanted ratios for best performances. It is also presented a way to establish the magnitudes of the torques that stress the gears, shafts, clutches and brakes.

Vehicle Dynamics; Automotive Engineering; Advanced Engineering Methods; Planetary Transmission; Automatic Transmission; Kinematics; Dynamics; Gear-Ratios Assessment; Gear-Ratios Optimization