US 9,810,294 B1
Planetary gear train of automatic transmission for vehicle
Hyun Sik Kwon, Whasung-Si (KR); Seong Wook Hwang, Whasung-Si (KR); Ki Tae Kim, Whasung-Si (KR); Wonmin Cho, Whasung-Si (KR); Jae Chang Kook, Whasung-Si (KR); and Seongwook Ji, Whasung-Si (KR)
Assigned to Hyundai Motor Company, Seoul (KR)
Filed by Hyundai Motor Company, Seoul (KR)
Filed on Dec. 12, 2016, as Appl. No. 15/376,449.
Claims priority of application No. 10-2016-0139272 (KR), filed on Oct. 25, 2016.
Int. Cl. F16H 3/60 (2006.01); F16H 3/66 (2006.01)
CPC F16H 3/66 (2013.01) [F16H 2200/0069 (2013.01); F16H 2200/2012 (2013.01); F16H 2200/2046 (2013.01); F16H 2200/2097 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A planetary gear train of an automatic transmission for a vehicle comprising:
an input shaft receiving torque of an engine;
an output shaft outputting 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 first shaft connected to the first rotation element and the fifth rotation element and connected to the input shaft;
a second shaft connected to the second rotation element and selectively connectable to the first shaft;
a third shaft connected to the third rotation element;
a fourth shaft connected to the fourth rotation element and connected to a transmission housing;
a fifth shaft connected to the sixth rotation element;
a sixth shaft connected to the seventh rotation element and the twelfth rotation element and selectively connectable to the second shaft;
a seventh shaft connected to the eighth rotation element and the eleventh rotation element and connected to the output shaft;
an eighth shaft connected to the ninth rotation element and selectively connectable to the third shaft; and
a ninth shaft connected to the tenth rotation element and selectively connectable to the second shaft and the fifth shaft.