| 摘要 |
PURPOSE:To shorten the length of the transmission in the title in its axle direc tion by combining a single planetary gear train with a Ravigneaux type com pound planetary gear train and connecting respective these gears and carrier to a case, input shaft and output shaft through a clutch and brake. CONSTITUTION:A single planetary gear train 30 is composed of an sun gear 31 a planetary pinion 32, a ring gear 33 and a carrier 34. A Ravigneaux type compound planetary gear train 40 15 composed of the first, second sun gear 41, 42, short and long pinion 43, 44, a Ravigneaux ring gear and a carrier 45, 46. Here, the first and second sun gear, the Ravigneaux carrier, and the sun gear 41, 42, 46, 31 are always connected to an input shaft 10 through a clutch C1-C4, and the Ravigneaux ring gear 45 to an output shaft 20 through the carrier 34. Therefore, its assembly can be made easy and its length in the direction can be shortened, and a desired speed change ratio and a good balance among respective speed change rations can be obtained.
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