STEPPED AUTOMATIC TRANSMISSION, AND POWER UNIT AND VEHICLE WITH THE SAME

摘要

[Task] To provide a stepped automatic transmission with a simple configuration which efficiently supplies oil to each rotation shaft and requires a small amount of oil. [Means for Resolution] An output shaft 33 is disposed in rear of an input shaft 52. A first intermediate shaft 181 and second intermediate shafts 183 to 185 are arranged on a power transmission path between the input shaft 52 and the output shaft 33. An oil reservoir 99 is formed in a bottom portion of a casing 211. The first intermediate shaft 181 is provided with oil chambers 133 and 137 to which oil is supplied and one or a plurality of through-holes 66a and 70a. The through-holes 66a and 70a are connected to the oil chambers 133 and 137.