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Item Information   Holdings       More by this author     Mettakadapa, Shreya, author.     Milwaukee School of Engineering     Subjects     Hydraulic fluids -- Testing     Pumping machinery -- Testing.     Hydraulic machinery -- Testing.     Flow meters     Axial flow.     MSE Project.     Browse Catalog     by author:      Mettakadapa, Shreya, author.      Milwaukee School of Engineering       by title:      Investigation of axi...         MARC Display

Investigation of axial piston hydraulic pump leakage flow through a fluid property model : a report submitted to the faculty of the Milwaukee School of Engineering in partial fulfillment of the requirements for the degree of Master of Science in Engineering/ by Shreya Mettakadapa. by Mettakadapa, Shreya, author., Milwaukee School of Engineering Subjects Hydraulic fluids -- Testing   Pumping machinery -- Testing.   Hydraulic machinery -- Testing.   Flow meters   Axial flow.   MSE Project. Description:  82 leaves : illustrations, some of which are in color ; 29 cm. Contents:  Introduction -- Background and literature review -- Experimental methodology and test results -- Model development -- Pump leakage flow simulation and modeling methodology -- Flow loss and torque loss simulation on an agricultural duty cycle -- Conclusions and recommendations -- Appendix A: Pump leakage flow MATLAB code -- B: Flow loss and torque loss MATLAB code. The purpose of this paper is to describe an experimental and modeling investigation of an open-loop variable-displacement axial piston hydraulic pump leakage flow based upon component specific parameters, fluid parameters, and system variables. The case drain and pressure compensator control flow rates of a variable-displacement axial piston pump were measured under a wide range of conditions. Synthetic ester, high bulk modulus, VI-improved and single grade mineral oils were evaluated. The high bulk modulus fluid exhibited 20% lower flow losses than a conventional mineral oil of the same viscosity grade. The modeling effort extended the flow loss analysis of Jeong to account for compensator control of the pump displacement. Comparisons between model predictions and measured flow losses showed good agreement. Stepwise regression analysis of the model parameters disclosed that the compressible flow term had a greater coefficient of determination than the turbulent or laminar flow terms. These findings demonstrate the potential of combining comprehensive fluid analysis with modeling to optimize fluids for the efficient transmission of power. This flow loss relationship was then used in conjunction with a Torque Loss Model to simulate the Flow losses and Torque Losses of an Agricultural Duty Cycle using a MATLAB model. Form:  text unmediated volume   Copy/Holding information Location Collection Call No. Status   Walter Schroeder Library Master's Theses AC805 .M475 2015 Available Add Copy to MyList Format: HTMLPlain textDelimited Subject:   Email to:

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