Output branch formula speed changer runs drive part and for setting control pressure for the method for transmission

摘要

The transmission (2) has a power branch coupled to an input shaft (21) with a control valve. A control pressure medium is applied to a hydraulic actuating device (17) of a hydraulic pump (16) as a function of a velocity setpoint value. The hydraulic pump is configured such that working pressure of a hydraulic motor (18) or pressure is effective in a direction for reducing the displacement volume. A pressure-control device sets control pressure of the control pressure medium to a setpoint value, where the set point value is dependent on a drive range of transmission or traction drive (1). An independent claim is also included for a method for setting control pressure of a power-split transmission for a traction drive having a drive machine.