| 摘要 |
<p>A drive system with variable overall transmission ratio comprising a power split transmission having a constant transmission-ratio power path (10, 38) and a variable transmission- ratio power path (32, 26), the power from the aforementioned paths being combined or separated by a planetary gear (14). The input and output (10, 60) of the power split transmission (26, 32; 14) are connected to an auxiliary planetary gear (52). A rotatable component (64) of the auxiliary gear (52) provides the input or output of the drive system. The variable transmission-ratio power path consists of a variable-capacity hydraulic pump (32) and a fixed-capacity motor connected by oil lines 28, 30. The drive system may drive a generator at constant speed in a ship. <IMAGE></p> |
