Electric motor driving vehicle and power unit thereof.

摘要

The invention relates to an electric motor driving vehicle having a driving unit (1) assembled with the motor (30) and the transmission mechanism (31), in order to avoid a load to a low rotational state of the motor (30), the transmission mechanism (31) is connected to the motor side and the driving wheel side within the range of a predetermined rotational number that the motor gets into the vicinity of maximum efficiency. According to this, motor driving is possible from starting, and because of small electric power and low heat generating quantity the cruising distance is extended, and the apparatus is made to be compact and of light weight. For this transmission, there are provided an automatic starting clutch (78, 85) and an automatic transmission (31), and when a belt type stepless speed change transmission is used as automatic transmission, maximum efficiency of the motor (30) or the vicinity state of the motor can always be maintained in the usual speed change range.