AN EXPERIENCE IN SIMULATION: THE CASE OF A VARIABLE DISPLACEMENT AXIAL PISTON PUMP

Abstract

The paper presents an analysis of the simulated behaviour of two displacement control systems of an axial piston pump for open circuits. To arrive at predictive analyses the non linear model of the unit and its displacement controls have been developed in the AMESim^l environment. The model, at constant displacement values, has been fine tuned by direct comparison of simulated and experimental data. In particular, steady state flow-pressure characteristics inclusive of absolute pressure limiter control are presented and contrasted. Dynamic simulation, grounded on the SAE J745 test procedure, yields response and recovery time along with swashplate angle time history. Finally, load sensing simulated system operation subject to a varying load is also discussed.