Continuously variable powertrain for vehicles

A continuously variable powertrain for a vehicle, the continuously variable powertrain comprising:

• an input shaft;
• a planetary gear train;
• a drive pulley engaged to the input shaft to receive power from the input shaft;
• a first clutch mounted between the input shaft and the drive pulley to selectively transmit the power transmitted from the input shaft to the drive pulley;
• a driven pulley coupled to the drive pulley by a belt;
• an output shaft mounted concentrically with a rotation axis of the driven pulley;
• a gear train unit engaging the input shaft and the output shaft;
• a second clutch mounted between the gear train unit and the output shaft or between the gear train unit and the input shaft to selectively transmit power from the input shaft through the gear train unit to the output shaft;
• and
• a third clutch mounted between the driven pulley and the output shaft to selectively transmit power from the driven pulley to the output shaft.