| 摘要 |
<p>A transmission (10) for a vehicle which includes a ground engaging structure (12) driven from an output member (25) of the transmission (10) is disclosed, the transmission (10) including a first input member (15) connected to a prime mover (13), and a second input member (45) drivable by the operation of a hydraulic drive motor (40), and the transmission (10) being operable to transmit drive from the first input member(15) to the output member (25) in mechanical drive mode, and from the second input member (45) to the output member (25) in hydrostatic drive mode, the first input member (15) providing a drive input from the prime mover (13) to a mechanical drive train (36) which includes a gear ratio selection apparatus (C), and for mechanical drive mode, the gear ratio selection apparatus (C) providing for one of a plurality of alternative gear ratios to be selected by the engagement and/or disengagement of at least one power-shift clutch device (24, 32; M3), and the second input member (45) being connected via a drive path to the output member (25), and there being a power-shift clutch device (44) between the hydraulic drive motor (40) and the second input member (45) which is operative when the transmission is in hydrostatic drive mode, to transmit drive established by the operation of the hydraulic drive motor (40) to the second input member (45).</p> |
