Automatic multistep reduction gearbox for motor vehicles has three sets of planetary wheels, a drive shaft, a driven shaft, a sun wheel for the first set of planetary wheels and a ring gear

摘要

A first set of planetary wheels (SOPW) (40) runs as an overdrive with double/simple planetary gears. Second (50) and third (60) SOPW each run as simple planetary gears. An input element for the first SOPW links to a drive shaft (20). A sun wheel for the first SOPW fastens on a gearbox casing. A first gearshift element (A) links a second SOPW ring gear (51) to the first SOPW's output element.