Research on the Friction Pairs in Water Hydraulic Piston Pumps

Abstract

Power control hydraulics (PCH) has one of the most versatile research fields and technologies that has many applications especially in the mechatronic industries. It also comes with drawbacks especially with issues concerning the use of mineral oil as a pressurized fluid in most of it applications. Furthermore, in the mechatronic field, researches in the ocean environment has become more difficult due to mineral oil incompatibility with the ocean water. One of the most accepted solution is to find alternatives to mineral oil as a PCH pressurized fluid which has led to water being the safest candidate. As a result, more researches have been carried out on water as a pressurized fluid in PCH systems. Axial hydraulic piston pump has been one of the best pumps for PCH systems. It was realized in this paper that, more options for material selection for the friction pairs were available and therefore water hydraulics can realize its main goals of providing a safe environment as well as being cost-effective. This paper seeks to review the various material friction pair selection that has been suggested by various researchers in this field and analyze their various methodologies and experimentations.