
Automatic transmission, comprising at least one primary hydraulic pump (1) arranged to be powered by a motor, said primary pump (1) being arranged to power a number of at least two secondary hydraulic pumps (2.sub.1 -2.sub.n) which are mechanically connected to an outgoing propeller shaft (6), the secondary hydraulic pumps being arranged for active powering of said outgoing propeller shaft when the hydraulic pressure caused by the primary pump in a closed room (A) between the primary pump and th...











