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Research Papers

A Novel Method to Quickly Acquire the Energy Efficiency for Piston Pumps

[+] Author and Article Information
Mengdi Gao

School of Mechanical
and Automotive Engineering,
Hefei University of Technology,
Hefei, Anhui 230009, China
e-mail: mengdgao@163.com

Haihong Huang

School of Mechanical
and Automotive Engineering,
Hefei University of Technology,
Hefei, Anhui 230009, China
e-mail: huanghaihong@hfut.edu.cn

Xinyu Li

School of Mechanical and
Automotive Engineering,
Hefei University of Technology,
Hefei, Anhui 230009, China
e-mail: li122425yu@126.com

Zhifeng Liu

School of Mechanical
and Automotive Engineering,
Hefei University of Technology,
Hefei, Anhui 230009, China
e-mail: zhfliuhfut@126.com

1Corresponding author.

Contributed by the Dynamic Systems Division of ASME for publication in the JOURNAL OF DYNAMIC SYSTEMS, MEASUREMENT, AND CONTROL. Manuscript received June 8, 2015; final manuscript received May 11, 2016; published online June 27, 2016. Assoc. Editor: Kevin Fite.

J. Dyn. Sys., Meas., Control 138(10), 101004 (Jun 27, 2016) (9 pages) Paper No: DS-15-1260; doi: 10.1115/1.4033840 History: Received June 08, 2015; Revised May 11, 2016

The energy efficiency of the piston pumps is one of the considerable important factors in design and analysis of hydraulic system, especially in the process of real-time tracking of energy dissipation in a variety of loading conditions. The existing methods for obtaining the energy efficiency curve of piston pumps are either time-consuming or inaccurate. In order to quantify the energy efficiency of the piston pumps quickly and accurately, the leakage and friction energy loss caused by the clearances in the sliding pairs are analyzed, and an overall efficiency model was established, which contains two constants to be determined by two test points. The accuracy of the model was verified based on a test rig for a hydraulic pump, and it can be improved by selecting appropriate test points via the method of deviation analysis. The results show that the proposed efficiency models are in good agreement with the experimental results, and the best test points are in the range of 0–25% and 51–75% of the peak pressure of the investigated piston pump.

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Figures

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Fig. 1

A swashplate-type axial piston pump: (a) Internal view of the pump and (b) sectional view of the piston pump with the inset shows the energy loss from the clearances between the main parts of the swashplate-type axial piston pump

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Fig. 5

The absolute error between experimental and predicted results of the six different combination of test ranges. ((a) The absolute error of piston pump HA16, (b) the absolute error of piston pump HA37, and (c) the absolute error of piston pump HA70).

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Fig. 4

Test points in different test range and the combination of the test range

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Fig. 3

The comparison between test and model prediction results for three different kinds of piston pumps, HA16, HA37, and HA70. ((a) The comparison of piston pump HA16, (b) the comparison of piston pump HA37, and (c) the comparison of piston pump HA70).

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Fig. 2

Hydraulic circuit for pump test rig

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