Transmission for a motor vehicle

摘要

A transmission having input and output shafts, shifting elements and planetary gearsets including sun and ring gears, planetary gearwheels and a carrier. The carrier of the first gearset is fixed to the input. The ring gear of the second gearset can be connected by a first shifting element to the housing and by a second shifting element to the carrier of the second gearset. The ring gear of the first gearset is fixed to the sun gear of the second gearset. The sun gear of the first gearset can be connected by a third shifting element to the housing, or is fixed to the sun gear of the second gearset and the ring gear of the first gearset can be connected by a third shifting element fixed to the housing. The shifting elements are arranged within the housing and accessible from outside the housing.

主权项

1. A transmission (1), for a motor vehicle, the transmission (1) comprising;
a housing (G), a drive input shaft (AN), a drive output shaft (AW), a plurality of shifting elements (A to Y) including at least a first shifting element (E), a second shifting element (F), and a third shifting element (B, K1), a first partial transmission (TG1) being formed by at least first and second planetary gearsets (PG1, PG4), a third planetary gearset (PG2) and a fourth planetary gearset (PG3), a second partial transmission (TG2), being formed by at least the second planetary gearset (PG4) together with at least one further planetary gearset or one intermediate gear system such that the second planetary gearset (PG4) acts as a range group used in common by both of the first and the second partial transmissions (TG1 ,TG2), the first arid the second planetary gearsets (PG1, PG4) each comprise a sun gear (101, 104), at least one planetary gearwheel (111, 114), a planetary carrier (121, 124) and a ring gear (131, 134), the carrier (121) of the first planetary gearset (PG1) being connected in a rotationally fixed manner to the drive input shaft (GW1, AN), the carrier (124) of the second planetary gearset (PG4) being directly connected to the drive output shaft (AW), the ring gear (134) of the second planetary gearset (PG4) being directly connectable to the housing (G) by the first shifting element (E), the ring gear (134) of the second planetary gearset (PG4) being directly connectable to the carrier (124) of the second planetary gearset (PG4) and the drive output shaft (AW) solely by engagement of only the second shifting element (F), the transmission further comprising either:
a first combination in which the ring gear (131) of the first planetary gearset (PG1) being rotationally fixedly connected to the sun gear (104) of the second planetary gearset (PG4) and the sun gear (101) of the first planetary gearset (PG1) being connectable by at least the third shifting element (B, K1) to the housing (G), ora second combination in which the sun gear (101) of the first planetary gearset (PG1) being rotationally fixedly connected to the sun gear (104) of the second planetary gearset (PG4) and the ring gear (131) of the first planetary gearset (PG1) being connectable by at least the third shifting element (B, K1) fixed to the housing (G), and a majority of the plurality of shifting elements (A, V, R, E, F, B, KO, K1) are arranged in the housing (G) so as to be accessible from outside the transmission.