| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a transmission mechanism with a pair of clutch systems. <P>SOLUTION: The transmission mechanism has an upstream gear ratio and a downstream gear ratio that are combined to provide an effective gear ratio. A different clutch drive member is mounted to an input side of each of the pair of clutch systems. The upstream gear ratio is determined by the gear ratio between the engine input member and one of the clutch drive members. Output sides of respective clutch systems drive an associated one of a pair of layshafts. Pinions are located on and selectively driven by the layshafts. A countershaft is spaced from both of the layshafts, and has a plurality of gears. Each of the gears is driven for rotation by one of the pinions of the layshafts. The downstream gear ratio is determined by the gear ratio between the selected pinion and the intermeshed gear. <P>COPYRIGHT: (C)2013,JPO&INPIT |
