TRANSMISSION

摘要

To avoid interference between a hydraulic clutch and a torque converter, a crank web or an alternator, provide all three hydraulic clutches in separate locations except opposite positions and miniaturize and lighten a crankcase in a transmission for transmitting the revolution of the torque converter provided to a crankshaft to a main shaft via a gear and further, shifting speed at three steps by a gear provided to the main shaft and a counter shaf t and the hydraulic clutch for connecting or disconnecting the gear. One hydraulic clutch is arranged on a main shaft outside a pair of supports for supporting the main shaft, two gears are fixed to the main shaft inside the supports for supporting the main shaft and on both sides close to the support, two gears engaged with the two gears fixed to the main shaft and revolvable on a counter shaft are arranged in positions on the counter shaft opposite to the insides of the supports of the main shaft and hydrauli c clutches for connecting or disconnecting each gear are arranged between the two gears.