| 摘要 |
A powertrain which is used for a 5-speed automatic transmission. The powertrain includes a first compound planetary gearset and a second compound planetary gearset. The first compound planetary gearset comprises first and second simple planetary gearsets having first, second, third, and fourth operating elements, while the second compound planetary gearset comprises third and fourth simple planetary gearsets having fifth, sixth, seventh, and eighth operating elements. The sixth operating element being fixedly connected to the third operating element, and the seventh and eighth operating elements are variably connected to the fourth operating element. Clutches are disposed between the seventh and fourth operating elements, and between the eighth and fourth operating elements. A brake is interposed between at least one of the operating elements of the first and second compound planetary gearsets and a transmission housing.
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