Planetary gear train of automatic transmission for vehicle

A planetary gear train of an automatic transmission for a vehicle, comprising:

• an input shaft receiving torque of an engine;
• an output shaft outputting changed torque;
• a first planetary gear set including first, second, and third rotation elements;
• a second planetary gear set including fourth, fifth, and sixth rotation elements;
• a compound planetary gear set formed by combining third and fourth planetary gear sets and including seventh, eighth, ninth, and tenth rotation elements;
• a fifth planetary gear set including eleventh, twelfth, and thirteenth rotation elements;
• a first rotation shaft including the third rotation element;
• a second rotation shaft including the second and thirteenth rotation elements;
• a third rotation shaft including the first and fourth rotation elements;
• a fourth rotation shaft including the fifth rotation element and directly connected to the input shaft;
• a fifth rotation shaft including the sixth rotation element and the seventh rotation element;
• a sixth rotation shaft including the eighth rotation element;
• a seventh rotation shaft including the ninth rotation element;
• an eighth rotation shaft including the tenth rotation element and the eleventh rotation element;
• a ninth rotation shaft including the twelfth rotation element and directly connected to the output shaft;
• a first clutch selectively connecting the fourth rotation shaft to the seventh rotation shaft;
• a second clutch selectively connecting the second rotation shaft to the sixth rotation shaft;
• a third clutch connecting any two rotation shafts among the fifth, sixth, seventh, and eighth rotation shafts so as to direct-couple the third and fourth planetary gear sets;
• a fourth clutch selectively connecting the fifth rotation shaft to the ninth rotation shaft;
• a first brake selectively connecting the third rotation shaft to a transmission housing;
• and
• a second brake selectively connecting the first rotation shaft to the transmission housing.

A planetary gear train of an automatic transmission for a vehicle, comprising:

• an input shaft receiving torque of an engine;
• an output shaft outputting changed torque;
• a first planetary gear set including a first sun gear, a first planet carrier, and a first ring gear;
• a second planetary gear set including a second sun gear, a second planet carrier, and a second ring gear;
• a third planetary gear set including a third sun gear, a third planet carrier, and a third ring gear;
• a fourth planetary gear set including a fourth sun gear, a fourth planet carrier, and a fourth ring gear;
• a fifth planetary gear set including a fifth sun gear, a fifth planet carrier, and a fifth ring gear;
• a first rotation shaft including the first ring gear and selectively connected to a transmission housing;
• a second rotation shaft including the first planet carrier and the fifth ring gear;
• a third rotation shaft including the first and second sun gears and selectively connected to the transmission housing;
• a fourth rotation shaft including the second planet carrier and directly connected to the input shaft;
• a fifth rotation shaft including the second ring gear and the third and fourth sun gears;
• a sixth rotation shaft including the third and fourth planet carriers and selectively connected to the second rotation shaft;
• a seventh rotation shaft including the third ring gear and selectively connected to the fourth rotation shaft;
• an eighth rotation shaft including the fourth ring gear and the fifth sun gear and selectively connected to the fifth rotation shaft;
• a ninth rotation shaft including the fifth planet carrier, selectively connected to the fifth rotation shaft, and directly connected to the output shaft;
• and
• six friction elements disposed between one rotation shaft and another rotation shaft or between one rotation shaft and the transmission housing.