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Development of a Test Stand for Measuring the Flow Coefficient: For Commutations used in Axial Piston Pumps
Linköping University, Department of Management and Engineering.
2007 (English)Independent thesis Advanced level (degree of Magister), 20 points / 30 hpStudent thesis
Abstract [en]

To be able to model the oil flow through commutations in axial piston pumps it’s necessary to do determine the efficiency coefficient of the flow in an accurate way. This could be done by doing measurements of commutations and calculate the coefficient with the measured values. In this master’s thesis a test stand has been developed where measurements of necessary parameters can be made. The orifice equation was used for calculating the flow coefficient for the oil that flow through the test stand. By doing measurements at different working points the results can be used for evaluating in which degree different parameters influence the flow coefficient.

During the master’s thesis measurements have been made on a hydraulic system containing the test stand and other components. One slot has been measured at different working points and the measure results have been used to verify the test stand. The measure results show that internal leakage occurs in the test stand. The results show also that if the internal leakage can be decreased could good measure results be achieved. Improvements of the test stand have been suggested on how the internal leakage could be decreased.

Place, publisher, year, edition, pages
Institutionen för ekonomisk och industriell utveckling , 2007. , 46 p.
Keyword [en]
Axial piston pump, commutation, flow coefficient, test stand, relief groove
National Category
Mechanical Engineering
URN: urn:nbn:se:liu:diva-8565ISRN: LIU-IEI-TEK-A--07/00105--SEOAI: diva2:23323
2007-03-06, IKP1, A, Linköpings Universitet, Linköping, 13:15
Available from: 2007-03-23 Created: 2007-03-23

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