Impact of undissolved gas on the performance characteristics of hydraulic fluids and characteristic of hydraulic system

Almost in all cases, the hydraulic fluid contains not only the liquid phase of the used oil but also by the gaseous phase, which is often air. Air and oil form a while tanking and pressure drop in particular areas of fluid flow. It can be during dynamic processes due to different rates of gas dissolution and evolution from the fluid. The value of gas compressibility is much bigger than the fluid one, it is necessary to investigate the impact of the gas content of hydraulic fluids on the operation of hydraulic systems. This paper considers analyzing the impact of the gas content of oils on characteristics of hydraulic devices and the properties of hydraulic fluids and the degree of their variation with the amount of undissolved air.