Vehicle gearbox with progressive transmission steps, comprises main gearbox with stages having ratio steps, splitter gearbox for dividing the ratio steps and a range group gearbox for expanding the overall ratio of the gear stages

摘要

The device has a main gearbox part (22) with gear stages with ratio steps between them, a splitter gearbox part (40) for dividing the main part ratio steps and a range group gearbox (10) for expanding the overall ratio of the main part gear stages by a slow and a fast ratio range.