| 摘要 |
<p>The transmission for producing multiple speed ratios, comprises an input shaft, an output shaft coaxial with the input shaft and an intermediate shaft coaxial with the input shaft. A countershaft is disposed parallel to the input shaft. It has a main drive for drivably connecting the countershaft and input shaft. There are multiple pairs of pinions and gears, the members of each pair being in continual mutual meshing engagement, a first member of each pair supported on the countershaft, a second member of each pair supported on one of the output shaft and intermediate shaft, each pair associated with a speed ratio, at least one pair associated with two speed ratios. It has a planetary gear unit including a sun gear, a ring gear, a carrier drivably connected to the output shaft, and planet pinions supported on the pinion carrier in continual meshing engagement with the sun gear and ring gear. One component of the group consisting of the ring gear and sun gear is drivably connected to the intermediate shaft. The other component of the group is fixed against rotation. The carrier is connected to the output shaft.A member of each pinion-gear pair is , respectively, connected to one of the output shaft and intermediate shaft.</p> |
