Verfahren zur Verstellung der Kegelscheibenpaare eines stufenlosen Kegelscheibenumschlingungsgetriebes

摘要

The invention relates to a control device for locking pairs of conical discs of a continuously adjustable winding box for conical discs 5 modifying the transmission ratio of a vehicle, in particular a motor vehicle. It includes, controlling the injection of compressed fluid into adjusting cylinders 46, 47 adjoining the pairs of conical discs, a hydraulic pilot valve 10 which possesses a control piston 11 which can be adjusted as a function of characteristic operating parameters. To obtain an inexpensive control, if possible, which however offers a wide range of possibilities a servo control 12 is provided, driven by a control unit 9, as a function of operating parameters, and directly actuating the control piston 11. Field of application: motor vehicles.