Patent ID: 7699736

Claim:
A multi-speed automatic planetary transmission for a motor vehicle comprising: an input shaft (AN); an output shaft (AB); first, second, third and fourth planetary gearsets (RS 1 , RS 2 , RS 3 , RS 4 ), with each of the first planetary gearset (RS 1 ), the second planetary gearset (RS 2 ), the third planetary gearset (RS 3 ) and the fourth planetary gearset (RS 4 ) having a sun gear, a carrier and a ring gear; at least third, fourth, fifth, sixth, seven and eighth rotatable shafts ( 3 , 4 , 5 , 6 , 7 , 8 ), and 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; an electric machine ( 12 ) being coupled, via a drive connection, to the fifth shaft ( 5 ), and the electric machine being at least one of generator and a drive engine; the first planetary gearset (RS 1 ), the second planetary gearset (RS 2 ), the third planetary gearset (RS 3 ) and the fourth planetary gearset (RS 4 ) are co-axially arranged in an axial direction in a sequential order of: the first planetary gearset (RS 1 ), the fourth planetary gearset (RS 4 ), the second planetary gearset (RS 2 ) and the third planetary gearset (RS 3 ); and the ring gear (HO 3 ) of the third planetary gearset (RS 3 ) is connected to the sixth shaft ( 6 ), planetary gears (PL 3 ), and the carrier (ST 3 , 2 ) of the third planetary gearset (RS 3 ) are connected to the output shaft (AB), wherein the drive connection comprise an additional sun gear ( 13 , 18 ) connected to the electric machine ( 12 ), as well as additional planetary gears ( 14 , 19 ) that engage with the additional sun gear ( 13 , 18 ), to connect the gears to the third planetary gearset (RS 3 ′, RS 3 ″).