Device for varying swept volume of two hydraulic engines of continuously variable transmission unit, has valve spool of regulating valve unit, which is impinged against throw force by control unit

摘要

The device (1) has a regulating valve unit (11) which limits the pressures in the region of hydraulic engines (2,3). The regulating valve unit is coupled to lines (9,10), in which the higher pressure is present. The hydraulic engines are connected with each other by the lines. A valve spool (16) of the regulating valve unit is impinged against a throw force by a control unit with a throw force adjustable as a function of a current transmission ratio inserted in the transmission unit.