Patent ID: 6840875

Claim:
A system ( 10 ) formed as an electrohydraulic system ( 10 ), for adjusting the contract pressures of a continuously variable gear formed as a double-cone pulley belt-contact gear, which has a device for changing the gear ratio of the gear having at least one primary pressure chamber and one secondary pressure chamber, having an electrically triggerable primary pressure valve (V prim ) for adjusting the pressure in the primary pressure chamber and an electrically triggerable secondary pressure valve (V sec ) for adjusting the pressure in the secondary pressure chamber, the pressure (p prim ) of the primary pressure chamber and the pressure (p sec ) of the secondary pressure chamber being carried to the secondary pressure valve (V sec ), characterized in that the control signal (I sec ) of the secondary valve (V sec ) is set to a value (I sec,soll ) which corresponds to a predetermined pressure (p prim,soll ) in the primary pressure chamber and to a predetermined pressure (p sec,soll ) in the secondary pressure chamber, and the pressure (p sec ) in the secondary pressure chamber is regulated via the control signal (I prim ) of the primary valve (V prim ), so that the pressure (p prim ) in the primary pressure chamber is established indirectly.