DOUBLE-CLUTCH TRANSMISSION FOR VEHICLES

摘要

Double-clutch transmission (1) (DCT) comprises two input shafts (20, 22) that are connected to two clutches (8, 10) separately. Three layshafts (40, 50, 38) of the DCT are spaced apart from the input shafts (20, 22) in parallel. One or more of the layshafts (40, 50, 38) comprise a pinion (41, 51, 55). Gearwheels of eight gearwheel groups are arranged on the shafts (20, 22, 38, 40, 50) for providing seven sequentially increasing forward gears and one reverse gear. Each one of the gearwheel groups comprises a fixed gearwheel on one of the input shafts (20, 22), meshing with an idler gearwheel on one of the layshafts (40, 50, 38). A third fixed gearwheel meshes with a third gear idler gearwheel (62) and a fifth gear idler gearwheel (64). Especially, a fourth fixed gearwheel (31) meshes with a fourth gear idler gearwheel and a sixth gear idler gearwheel (65).