SERVOSTYRINRETTNING I SYNNERHET FOR MOTORFORDON

摘要

A hydrostatic servo operated steering system having primary and shunt motors connected to the steering linkage under control of steering wheel and pressure operated valves to effect a change in steering effort in order to meet changes in load or resistance. A shuttle valve responsive to a pressure differential between the output of the engine driven servo pump and the pressure applied to the primary servo motor, controls supply of operating pressure medium to the shunt motor from either the servo motor or the steering wheel actuated control pump in the event the servo pump fails.