Multi-step reduction gear for automatic transmission used in motor vehicle e.g. passenger car, has sun wheel of planetary gear train that is connected with drive shaft, and brake that is coupled with housing

摘要

The gear has a shaft (4) that is connected with ring gears of second planetary gear train (P2) and clutch (14) that is connected with drive shaft (1) of gear box. A sun wheel of second planetary gear train is connected with drive shaft (6) which is connected with ring gears of first planetary gear train (P1). A bar of first planetary gear train and ring gear of fourth planetary gear train are coupled to housing (G). The sun wheel of third planetary gear train (P3) is connected with drive shaft (3) and brake (03) is coupled with housing.