HYDRAULIC SERVOAMPLIFIER Russian patent published in 2003 - IPC

FIELD: hydraulic servoamplifiers; applicable, mainly, in vehicle clutch control. SUBSTANCE: hydraulic servoamplifier has body with pressure and drain cavities separated by piston conjugated with controlled mechanism. Piston has drain channel. Controlling member is made in form of rod and forms a couple NOZZLE-gate together with drain channel. Body drain cavity is communicated with working fluid source through check valve whose shutoff member is installed in body drain cavity and controlled by shaped surface made on rod of controlling member. In addition, installed in piston drain channel is compression spring whose one end constantly rests on end face of controlling member rod. EFFECT: reduced energy consumption. 2 cl, 1 dwg