Patent ID: 7429230
Filing Date: 2008-09-30
Classification: F16H

Abstract:
1. A multi-stage automatic transmission having a front-mounted gearset (VS) as an overdrive planet gearset, a main gearset designed as a multi-member planetary gear and first, second, third, fourth, fifth and sixth shifting elements (A, B, C, D, E, F) which, by selective engagement thereof, a transmission input rotational speed of an input shaft (AN) of the multi-stage automatic transmission can be transmitted to an output shaft (AB) of the multi-stage automatic transmission whereby when changing from one gear to a next following higher or a next following lower gear, of actuated shifting elements, only one additional shifting element is engaged and one of the engaged shifting elements is disengaged; a sun gear (SO_VS) of the front-mounted gearset (VS) is fixed to a transmission housing (GE) of the multi-stage automatic transmission; a web (ST_VS) of the front-mounted gearset (VS) is connected with the input shaft (AN) of the multi-stage automatic transmission; the main gearset has a first, a second and a third rear-mounted gearset (NS a sun gear (SO_NS a web (ST_NS an internal gear (HO_NS an internal gear (HO_NS a sun gear (SO_NS a web (ST_NS an internal gear (HO_NS a connecting shifting element (VE) is provided, for connecting the output shaft (AB) and the coupled webs (ST_NS the input shaft (AN) and the output shaft (AB) are disposed coaxially with respect to one another.