Importance

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Abstract

Described is a drive power distribution control system for a vehicle, which is suitable for use in distributing drive power to a left and right drive wheels or to front or rear drive wheels or in distributing drive power by transfer of drive power between a left and right non-drive wheels. The system is provided, between a first output shaft and a second output shaft, with a differential casing to which drive power is inputted, a differential mechanism for transmitting the drive power to the shafts, and a drive power transmission control mechanism capable of controlling the distribution of the drive power to the respective shafts. The mechanism is interposed between the shafts and the casing and is constructed of a speed change mechanism capable of changing and outputting rotational speeds of the shafts and a drive power transmission mechanism capable of transmitting drive force between the casing and a second sun gear of the speed change mechanism.

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First Claim