| 摘要 |
A transmission applying totally meshing gear sets to transmit power, wherein a sleeve is used to loosen or twist spring inside the gear set so as to select, the required gear set to transmit power, and several sequential sets of driving transmission ratio are provided whereby when shifting, the accelerator does not need to be freed and can be continuously stepped down, and a microprocessor will according to data sent from detecting devices detecting rotation speed of input shaft properly control shifting operation so that automatically shifting operation can be quickly actually sensively performed, permitting the engine to output power at maximum efficiency. (Fig. 1) 47
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