| 摘要 |
The invention relates to a motor vehicle gearbox with two concentrically mounted input shafts (6, 9), each driving an individual layshaft (12, 15), having gears (16-19, 41) in engagement with gears (21, 22, 40) on an output shaft. One layshaft (12) has a central synchronizing device (30), by means of which the layshaft, which is driveably coupled to the momentarily non-driven input shaft, can be accelerated up to a rotational speed determined by the selected gear speed. The central synchronization device (30) has a friction clutch (34) and two synchronization gears (32, 33), one of which (32) is wider than the other and is lockable to the shaft (12) with the aid of an engaging sleeve (53), so that driving torque can be transmitted via the synchronization gear. |
