Hydraulic system for adjusting contact pressure of belt-driven conical pulley transmission, comprises torque sensor, which provides sensor pressure, and contact pressure valve, which is actuated by hydraulic voltage divider

摘要

The hydraulic system (1) comprises a torque sensor (10), which provides a sensor pressure, and a contact pressure valve (15), which is actuated by a hydraulic voltage divider (20). The hydraulic voltage divider comprises a center tap (23), which is arranged between two hydraulic resistors (31,32). The two hydraulic resistors are arranged between a sensor pressure output of the torque sensor and a pressure release space (6). The contact pressure valve has a valve piston (35), which is loaded at an end with the voltage divider and at another end with the contact pressure.