| 摘要 |
<p>A modular electrically variable transmission includes a sun-shared module (60) and a sun and ring-shared module (70) assembled to form a two-module electrically variable transmission (10) having a shiftable motor speed reducer subassembly (50) and an electrically variable transmission subassembly (40). The sun-shared module (60) includes a first motor-generator (54), an input (80), and primary and secondary planetary gear sets each having respective primary and secondary ring gears (96, 110), carriers (88, 102) and associated pinion gears (92, 106). The pinion gears (92, 106) are in meshing engagement with a single first shared sun gear (84) non-rotatably coupled to the first motor-generator (54). The sun and ring-shared module (70) includes a second motor-generator (44), input (174), shared sun gear (120) and shared ring gear (124), and primary and second secondary planetary gear sets. The secondary planetary gear set includes a secondary carrier (142) supporting outer and inner pinion gears. The second shared sun gear (120) is non-rotatably coupled to the second motor-generator (44).</p> |
