CONTROL MECHANISM OF ADJUSTABLE AXIAL-PISTON PUMP Russian patent published in 1994 - IPC

FIELD: mechanical engineering. SUBSTANCE: electric control channel is two-stage electrohydraulic amplifier whose first stage is hydraulic booster, type nozzle-gate with positional type electromechanical converter. The second stage of amplification is distributor made in form of three slide valves. Slide valve hydraulic booster is used as mechanical control channel with control of center slide valve. First end slide valve is secured on cradle and its motion is proportional to the algebraic sum of control signals at each control input. EFFECT: enhanced efficiency. 2 cl, 3 dwg