MULTI-STAGE TRANSMISSION

摘要

An automatic transmission (20) containing a single-pinion first planetary gear (21), a double-pinion second planetary gear (22), a single-pinion third planetary gear (23), a single-pinion fourth planetary gear (24), clutches (C1, C2, C3, and C4), and brakes (B1, B2). By engaging any three of these components, that is, the clutches (C1-C4) and the brakes (B1, B2), and disengaging the remaining three components, it is possible to form first through ninth gears and a reverse gear.