Transmission for motor vehicles

摘要

A transmission for a motor vehicle, including an input shaft a countershaft parallel the input shaft, an output shaft arranged coaxial with the input shaft and a plurality of speed ratio gearwheel pairs. One gearwheel of each speed ratio gearwheel pair is carried on the countershaft and the other gearwheel carried on either the input shaft or output shaft. Each speed ratio pair comprises a fixed gearwheel and a loose gearwheel. A constant ratio is arranged between the countershaft either the input shaft or output shaft for transmitting a selected speed ratio from the input shaft to the output shaft. An input synchronizer releasably connects and releases the input shaft and the countershaft.