| 摘要 |
<p>A 16-speed transmission comprises an eight-speed transmission section including parallel input, counter and output shafts carrying constant mesh gearing, and the input shaft having a two-speed planetary transmission section connected thereto and controllable between first and second operative conditions for respectively driving the input shaft at a high and low speed. A first clutch is provided for selectively causing driving engagement between two sets of gearing for respectively driving the countershaft from the input shaft at a high and a low speed, for every speed of the input shaft; and second and third clutches are provided for selectively causing driving engagement between four sets of gearing for respectively driving the output shaft from the countershaft at four different speeds, for every speed of the countershaft. A range shift lever is selectively shiftable among four operative positions for controlling the engagement and disengagement of the secnd and second clutches to selectively establish low, intermediate, high and transport ranges of speed in the transmission; and a speed shift lever is shiftable among four operative positions for controlling the planetary transmission sections and the first clutch whereby any one of four speeds may be selected in each range of speeds selected by the range shift lever. Indicia is provided along with the shift patterns of the levers to indicate to the operator the position to which the levers must be shifted to obtain the next higher or lower speed from the one at which the transmission is operating.</p> |
