Abstract
The understanding of the power loss contributions of each loss source is essential for an effective development of swash plate type axial piston pump. However, it is difficult to obtain the assessment of the power loss distribution due to the lack of methodologies that allow an independent evaluation of each source. This paper addresses this challenge using the most recent simulation methods. It describes the determination of each source, along with the corresponding loss of performance, and the principle of their prediction during the design phase. It also reports the validation of the simulation model by comparing the simulated dynamic displacement chamber pressure and the solid body temperature distribution with measurements obtained from a special pump prototype. This proposed virtual assessment of power loss contributions is demonstrated on a commercial hydraulic unit and the detailed results are reported in this paper.
Highlights
Swash plate type axial piston pumps (S-APPs) are variable positive displacement machines known for their high-pressure capability, high power density, high-energy efficiency, and great robustness
The experimental approach focuses on measuring the displacement chamber pressure and the valve plate temperature
This paper firstly presented the classification of all types of power losses in S-APP and with the principles of their determinations using pure physics-based simulation methods
Summary
Swash plate type axial piston pumps (S-APPs) are variable positive displacement machines known for their high-pressure capability, high power density, high-energy efficiency, and great robustness. Thanks to these advantages, S-APPs dominate the high-pressure unit market for agricultural, industrial, and off-highway vehicle applications. When developing S-APPs, the top challenge is to design the three lubricating interfaces (piston/cylinder bore interface, cylinder block/valve plate interface, and slipper/swash plate interface) These tribological interfaces must fulfill two functions: sealing the high pressure (up to 50 MPa) fluid in the displacement chambers and bearing the high loads from the chamber pressure. The gap flow in these interfaces presents itself as the external leakage
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
