Multi-stage gearbox used for automatic transmission of motor vehicle, has fourth clutch which is connected with ring gear of third planetary gear set and spider of fourth planetary gear set through first spur-gear stage

摘要

The gearbox has sixth shaft (6) which is connected to a spider of the first planetary gear set (P1) and the ring gear of the second planetary gear set (P2). A second spur gear (S2) is connected with the ring gear of fourth planetary gear set (P4). The output shaft (2) is connected to carrier of third planetary gear set (P3). A fifth shaft is connected to the sun gear of third planetary gear set (P3). A fourth clutch (18) is connected with the ring gear of the third planetary gear set and the spider of the fourth planetary gear set by first spur-gear stage (S1).