Automobile multi-speed gearbox, with eight forward and two reverse gears, has three planet wheel sets and six switch units between the drive input and output shafts

摘要

The automatic multi-speed gearbox, with eight forward and two reverse gears, has a drive input shaft (1), a drive output shaft (2), three planet wheel sets (P1-P3) with six rotating shafts (1-6) and six switch units composed of two brakes (03,04) and four clutches (13,14,36,46) to give a variety of selected ratios between the input and output shafts. The sun wheel of the first planet wheel set is keyed to the housing (G).