| 摘要 |
A multiple ratio manual power transmission mechanism for an automotive vehicle comprising main torque delivery gears and a cluster gear assembly having gear elements engageable with each of the main torque delivery gears, a pair of double acting synchronizer clutch mechanisms for selectively actuating four of said main torque delivery gears to establish two underdrive ratios, a direct-drive ratio and an overdrive ratio, and a single shift rail and shift lever assembly for actuating said synchronizer clutch mechanisms including a first motion reversing lever assembly establishing a connection between the single shift rail and the synchronizer clutch mechanism for third and fourth ratio changes and another lever assembly for reversing the motion imparted to a reverse drive pinion by the single shift rail, the reverse drive pinion being shiftable to a driving position or to an inoperative position and the synchronizer clutch mechanism for the first and second speed ratio changes including an integral main drive gear that forms a part of the reverse torque delivery path. |
