Patent ID: 7651429
Filing Date: 2010-01-26
Classification: F16H

Abstract:
1. A multi-speed automatic transmission, of a planetary design, for a motor vehicle, the transmission comprising: an input shaft (AN); an output shaft (AB); first, second, third and fourth planetary gearsets (RS at least first, second, third, fourth, fifth, sixth, seventh and eighth rotatable shafts ( first, second, third, fourth and fifth shifting elements (A, B, C, D, E) whose selective engagement creates different gear ratios between the input shaft (AN) and the output shaft (AB) so that eight forward gears and at least one reverse gear can be implemented; wherein the carrier (ST the carrier (ST the sun gear (SO the ring gear (HO the sun gear (SO the carrier (ST the ring gear (HO the ring gear (HO the first shifting element (A) is arranged between the third shaft ( the second shifting element (B) is arranged between the fourth shaft ( the third shifting element (C) is arranged, in a direction of power flow, between one of the fifth shaft( the fourth shifting element (D) is arranged, in the direction of power flow, between the sixth shaft ( the fifth shifting element (E) is arranged, in the direction of power flow, between the fifth shaft (