1993 Volume 1993 Issue 2 Pages 367-372
A test method based on the use of a simple circuit made by pump-line-load valve has been applied in order to characterize a variable displacement axial piston pump as to its hydraulic noise. The best anechoic conditions achieved, pump fluidborne noise and internal flow losses are provided by source impedance and ideal fl ow ripple evaluation. The influence of constructive parameters as pump port plate geometry and swash plate fastener has been taken into account and various working conditions on acoustic and functional performance examined. The limits of the test method identified, an alternative procedure has been proposed making use of simpler experimental data acquisition and computer programs on purpose worked out.