Planetary gear train of automatic transmission for vehicles

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

• an input shaft configured to receive an engine torque;
• an output shaft configured to output a 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 third planetary gear set including seventh, eighth, and ninth rotation elements;
• a fourth planetary gear set including tenth, eleventh and twelfth rotation elements;
• a fifth planetary gear set including thirteenth, fourteenth, and fifteenth rotation elements;
• a first shaft connected with the third rotation element and the input shaft;
• a second shaft connected with the fourteenth rotation element and the output shaft;
• a third shaft connected with the fifth rotation element and the thirteenth rotation element;
• a fourth shaft connected with the second rotation element, the eighth rotation element, and the fifteenth rotation element;
• a fifth shaft connected with the first rotation element and the fourth rotation element;
• a sixth shaft connected with the sixth rotation element and the eleventh rotation element;
• a seventh shaft connected with the ninth rotation element;
• and
• eighth and ninth shafts selectively connected to a transmission housing, wherein the eighth and ninth shafts are respectively connected to a corresponding rotation element of the third and fourth planetary gear sets that is unconnected to another rotational element selected from the rotational elements of the five planetary gear sets.

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

• an input shaft configured to receive an engine torque;
• an output shaft configured to output a 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 third planetary gear set including seventh, eighth, and ninth rotation elements;
• a fourth planetary gear set including tenth, eleventh and twelfth rotation elements;
• a fifth planetary gear set including thirteenth, fourteenth, and fifteenth rotation elements;
• a first shaft connected with the third rotation element and the input shaft;
• a second shaft connected with the fourteenth rotation element and the output shaft;
• a third shaft connected with the fifth rotation element and the thirteenth rotation element;
• a fourth shaft connected with the second rotation element, the eighth rotation element, and the fifteenth rotation element;
• a fifth shaft connected with the first rotation element and the fourth rotation element;
• a sixth shaft connected with the sixth rotation element and the eleventh rotation element;
• a seventh shaft connected with the ninth rotation element;
• and
• eighth and ninth shafts respectively and selectively connected to a transmission housing, the eighth and ninth shafts are respectively connected to a corresponding rotation element of the third and fourth planetary gear sets that is unconnected to another rotational element selected from the rotational elements of the five planetary gear sets.