Hydraulic power steering system with dual, double-acting piston-cylinder units

摘要

In a hydraulically operated steering for a motor vehicle comprising a control motor with first and second double acting piston and cylinder units arranged in axial alignment and a single piston rod extending through the first and second double acting piston and cylinder units, at least one of the double acting piston and cylinder units includes an annular piston which is fastened on the pistons rod in a predetermined axial position and an annular divider wall is disposed between the pistons for slidably supporting the piston rod and separating the cylinders of said first and second double acting piston and cylinder units fluidically from one another so as to form cylinder chambers for said pistons limited at one side by an annular divider wall and by guide sleeve members disposed in the opposite ends of the cylinder units.