除了不需在汽车上配置传统发动机舱，由于轮毂电机不需要机械传动(一般有传动轴和差别单位)，轮毂电机能节省汽车空间并减少重量。

Besides dispensing with the traditional engine bay on a car, hub motors save space and weight because there is no need for a mechanical transmission, with its driveshafts and differential units.

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这些汽车全部具有必须能源，控制与轮毂一体的系统，这样能更大地减少轮毂和汽车其它部分的连接点。

The motors have all the necessary power and control systems integrated into the wheel hub, greatly reducing the number of connections between the hub motors and the rest of the vehicle.

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一个链轮(212)包括一个轮毂和多个从轮毂径向向外突出的齿。

A sprocket (212) includes a hub and a plurality of teeth projecting radially outwardly from the hub.

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