HYDROPNEUMATIC Suspension: Operation
The hydraulic oil pump delivers oil from the oil reservoir to the main pressure reservoir via pressure regulator of valve unit. When the maximum oil pressure is reached, the pressure regulator reverses the oil flow. If the main oil pressure drops to the minimum, pressure regulator will reverse the flow and oil will be pumped into the main pressure reservoir until maximum pressure is again reached. If vehicle level drops due to increased load, levelling valve will open. Oil flowing into suspension struts will lift vehicle until normal level is reached. If load is reduced, levelling valve will permit oil to flow from suspension struts until vehicle is back to normal level. The oil flowing from struts, is returned to oil reservoir after going through a filter.