Multi-stage gearbox i.e. automatic gearbox, for passenger car, has gear train with ring gears connected with spur gears of gear stage, where other gears of gear stage are connected to shaft and another gear train is locked through clutches

摘要

The gearbox has a drive shaft (1) connected with a sun wheel of a planetary gear train (P1). A bar of the planetary gear train is connected to a spur gear (ST1) of a spur gear stage (S1), where other spur gears (ST2) of the spur gear stage are connected with a driven shaft (2) over a clutch (K2). Ring gears of another planetary gear train (P2) are connected with spur gears (ST3) of another spur gear stage (S2), and other spur gears (ST4) of the latter spur gear stage are connected to the driven shaft. The former gear train is locked through other clutches (K3). The planetary gear trains are designed as minus planetary gear trains.