Procedure for controlling the fluid friction coupling of a power distribution system of a single-wheel motor vehicle and a controllable fluid friction coupling system.

摘要

A controllable fluid friction clutch (11) is adjusted by way of a flow control valve (24), which directly controls the speed of the adjusting piston (13) by way of a pressure line (25). The control method consists in calculating individual control deviations from input variables and basic variables, from which deviations a reference piston speed is then formed, which is finally processed by a control unit to give a valve flow as adjusting signal. A fluid friction clutch unit is thereby created which responds rapidly and fully to all conceivable drive conditions. IMAGE