| 摘要 |
Disclosed is a powertrain 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 gear unit comprises third and fourth simple planetary gearsets having fifth, sixth, seventh and eighth operating elements. The fifth and sixth operating elements are variably connected to the second and first operating elements, respectively, and said seventh operating element is fixedly connected to the fourth operating element. Clutches are disposed to variably connect the fifth and sixth operating elements to the second and first operating elements, respectively. Brakes are interposed between the fourth and eighth operating elements and a transmission housing.
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