Transmission including planetary gear set arrangement

摘要

A transmission includes a first simple planetary gear set (130) having first, second, and third elements (132,134,136), the first element (132) of the first gear set (130) receiving rotational motion input to the transmission, and a second simple planetary gear set (140) having first, second, and third elements (142,144,146), the first element (142) of the second gear set outputting rotational motion from the transmission. The elements of the first gear set (130) include a sun gear (132), a first carrier (134), and a first ring gear (136), and the elements of the second gear set (140) include a second sun gear (142), a second carrier (144), and a second ring gear (146). A first clutch (150) selectively couples the second element (134) of the first gear set (130) to the second element (144) of the second gear set (140). A second clutch (152) selectively couples the third element (136) of the first gear set (130) to the third element (146) of the second gear set (140). A third clutch (154) selectively couples two of the elements of the first gear set (130). A first brake (156) selectively brakes the second element (144) of the second gear set (140), and a second brake (158) selectively braking the third element (146) of the second gear set (140).