Investigation into the effect of the slipper compensating orifice size on the mechanical and volumetric efficiency of a fixed displacement axial piston hydrostatic unit
نویسندگان
چکیده
The sizeof the compensating orifice in the slipper of hydrostatic units has an important influence on the volumetric, mechanical, and overall efficiencies. A simple model was derived to predict the changes in efficiencies caused byfirst reducing and then blanking the orifice. Testing in a hydrostatic unit was performed to measure the effects of the slipper orifice design on efficiency. Comparison of the test results to the model's predictions was then made Testingvalidated the predicted result that volumetric efficiencies should increase as the orifice was first reduced and then eliminated. The results from the mechanical efficiency testing did not agreewith the predicted results. Thebest overall efficiencies were exhibited by the reduced orifice design.
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