Computational valve plate design in axial piston pumps/motors

Abstract

Many industries utilize axial piston machines for the compact design, high operating pressures, variable displacements, and high efficiencies that far outweigh the machines’ manufacturing costs. For all axial piston machines, the valve plate functions as an essential determinant of performance. The aim of this research is to develop a design methodology generalizable to all types of valve plates while remaining accessible to users without advanced technical knowledge. The proposed design methodology is organized to fit the form of the standardized optimization problem statement. This organization enables the use of any modern optimization algorithm. Specifically, the design methodology utilizes a previously developed computer model, which is based on the main physical phenomena influencing the design of flow passages from the pump port to the displacement chambers and vice versa. The chosen design methodology allows the precise optimization of the valve plate design by simulations rather than expensive trial and error processes. A recent case study demonstrated the strong positive correlation between application of the methodology and improved performance of the valve plate design.