| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an automatic transmission having high flexibility of setting a gear ratio of a shift stage.SOLUTION: An automatic transmission includes: a first planetary gear mechanism 21 having a first sun gear S1, a first ring gear R1, and a first carrier C1 that rotatably supports a pair of a first pinion P11 and a first intermediate pinion P12 engaging with the first sun gear S1 and the first ring gear R1, respectively; a second planetary gear mechanism 22 having a second sun gear S2, a second ring gear R2, and a second carrier C2 rotatably supporting a second pinion P2; a third planetary gear mechanism 23 having a third sun gear S3 connected to the second sun gear S2, a third ring gear R3 connected to the second carrier C2, and a third carrier C3 rotatably supporting a third pinion P3; and a fourth planetary gear mechanism 24 having a fourth sun gear S4, a fourth ring gear R4 connected to the third carrier C3, and a fourth carrier C4 rotatably supporting a fourth pinion P4.</p> |
