| 摘要 |
<p>PURPOSE: A power transfer unit for an auto transmission is provided to form forward 6speeds and backward 1speed by forming a speed changing step of forward 2speeds through an output gear and a differential gear. CONSTITUTION: An input shaft(10) comprises a first main driving gear and a second main driving gear. A first speed changing shaft(30) comprises a first slave gear, a first connection gear, and a first coupling gear. A first sun gear(52) is connected with the first speed changing shaft by a first clutch. A second slave gear(72) is gear-combined with the first main driving gear. A second sun gear is connected with a second speed changing shaft by a second clutch. A first planetary gear set comprises a first ring gear connected with the first coupling gear. A second planetary gear set comprises a second ring gear connected with a second coupling gear.</p> |
