Patent ID: 6553761
Filing Date: 2003-04-29
Classification: B60G,F16F

Abstract:
A suspension system for a motor vehicle with level regulation for adjusting a predetermined height of a vehicle body, comprising:at least one piston-cylinder unit provided with a work cylinder, a piston rod axially movably arranged in said work cylinder, and a damping piston connected to said piston rod; an oil reservoir; and a pump connected between said oil reservoir and said piston-cylinder unit via corresponding inlet and outlet lines, wherein said pump comprises a pump piston and a drive unit operatively arranged for effecting a reciprocating axial movement of said pump piston, said drive unit being electrically controlled, wherein said pump piston has a drive side connected to said drive unit and a delivery side connected to said inlet and outlet lines, and wherein said pump piston is arranged so that the pressure of said piston-cylinder unit acts on said delivery side and on said driving side of said pump piston.