Power unit of utility vehicle

A power unit of a utility vehicle, comprising:

• a power source for travel of the utility vehicle, the power source comprising a drive shaft that outputs rotational power;
• a continuously variable transmission comprising a CVT input shaft that receives the rotational power input from the drive shaft of the power source, a CVT output shaft that outputs the rotational power, a drive pulley mounted on the CVT input shaft, a driven pulley mounted on the CVT output shaft, and a belt wound around the drive pulley and the driven pulley;
• a gear transmission that receives rotational power output by the power source or the continuously variable transmission;
• a first clutch interposed between the power source and the gear transmission;
• a second clutch interposed between the continuously variable transmission and the gear transmission;
• and
• an output mechanism that receives rotational power output by the gear transmission and that outputs the rotational power to a drive wheel, wherein
• the gear transmission comprises:
• a first GT input shaft that receives the rotational power input from the power source;
• a second GT input shaft that receives the rotational power input from the CVT output shaft;
• a GT output shaft that outputs the rotational power to the output mechanism;
• a first GT intermediate shaft that transmits the rotational power from the first GT input shaft to the GT output shaft;
• a second GT intermediate shaft that transmits the rotational power from the second GT input shaft to the GT output shaft;
• first speed-change gears mounted on the first GT input shaft and the first GT intermediate shaft;
• second speed-change gears mounted on the second GT input shaft and the second GT intermediate shaft;
• a first transmission gear mounted on the first GT intermediate shaft to provide power transmission to the GT output shaft;
• and
• a second transmission gear mounted on the second GT intermediate shaft to provide power transmission to the GT output shaft,
• the first clutch is configured to disable power transmission from the power source to the first GT input shaft, and
• the second clutch is configured to disable power transmission from the CVT output shaft to the second GT input shaft.