Vehicle suspension system with variable suspension characteristics - controls supply and discharge of fluid in to or out of hydraulic cylinders provided respectively between motor vehicle body and each wheel

摘要

The suspension system consists of a pressure determn. unit for determining the cylinder pressure of the cylinders and a vehicle level determn unit. Also a cylinder supply and discharge control unit. This unit controls the supply and discharge of a fluid flow amount to and from the hydraulic cylinders. The control unit receives a cylinder pressure signal and a motor vehicle level signal from the two determn. units as parameters. A first target motor vehicle level is set, based on the cylinder pressure signal determined by the pressure determn. unit. Controls of the fluid flow amount for the cylinders result, so that the motor vehicle level corresponds to the first target level. ADVANTAGE - Suspension characteristic improved. Suspension responds to control with elimination of oscillation caused by mutual disruption between various controls.