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Determining Source Fluidborne Noise Characteristics of Automotive Fluid Power Pumps
Technical Paper
2001-01-1612
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
A new method, the “3 Pressures/ 2 Systems” method, is developed for determining source flow ripple and internal impedance of fluid power pumps. The method integrates exclusively an on-line measurement technique for the speed of sound in the fluid and a technique for eliminating flow disturbance effect on pressure sensors into the basic principle used in the existing “2 Pressures / 2 Systems” method. The new method has an inherent potential to yield results with higher accuracy and higher confidence. The high accuracy of the method is confirmed by the comparison of measured and predicted pressure ripple in a pump-pipe-valve system. Then, the method is applied to automotive fluid power pumps - power steering pumps. The measured results of source flow ripple and internal impedance are presented.
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Authors
Topic
Citation
Yu, J., "Determining Source Fluidborne Noise Characteristics of Automotive Fluid Power Pumps," SAE Technical Paper 2001-01-1612, 2001, https://doi.org/10.4271/2001-01-1612.Also In
SAE 2001 Transactions Journal of Passenger Cars - Mechanical Systems
Number: V110-6; Published: 2002-09-15
Number: V110-6; Published: 2002-09-15
References
- Davidson L.C. “The Internal Impedance of Positive Displacement Pumps (Experimental Determination and Effect on System Noise),” Proceedings of the 32 nd National Conference on Fluid Power 99 100 1976
- O'Neal D.L. Maroney G.E. “Measuring Pump Fluid-Borne Noise Generation Potential,” The BFPR Journal 235 241 1978
- Szerlag S.F. “Rating Pump Fluid-Borne Noise,” SAE paper 750830 1975
- Kojima E. Nagakura H. “Characteristics of Fluid-Borne Noise Generated by Fluid Power Pumps, 1 st Report, Mechanism of Generation of Pressure Pulsation in Axial Piston Pump,” Bulletin of the JSME 25 199 46 53 1982
- Edge K.A. Wing T.J. “The Measurement of the Fluid-Borne Pressure Ripple Characteristics of Hydraulic Components,” Proc. Instn. Mech. Engrs 197 247 254 1983
- Edge K.A. Johnston D.N. “The ‘Secondary Source’ Method for the Measurement of Pump Pressure Ripple Characteristics, Part A: Description of Method,” Proc. Instn. Mech. Engrs 204 33 40 1990
- Edge K.A. Johnston D.N. “The ‘Secondary Source’ Method for the Measurement of Pump Pressure Ripple Characteristics, Part B: Experimental Results,” Proc. Instn. Mech. Engrs 204 41 46 1990
- 1996 “Hydraulic fluid power-Method for determining pressure ripple levels generated in systems and components-Part 1:Precision method for pumps”
- Kojima E. Yu J. “Experimental Determining and Theoretical Predicting of Source Flow Ripple Generated by Fluid Power Piston Pumps,” SAE technical paper 2000-01-2617 1 10 2000
- Kojima E. “A New Method for the Experimental Determination of Pump Fluid-Borne Noise Characteristics,” Proceedings of the 5 th Bath International Fluid Power Workshop, Circuit, Component and System Design 111 135 1992
- Yu J. “Factors Affecting Accurate Measurement of Fluidborne Noise Characteristics of Fluid Power Pumps,” Proceedings of the Second JHPS International Symposium on Fluid Power Tokyo, Japan 349 354 1993
- Yu J. Kojima E. “Methods for Measuring the Speed of Sound in the Fluid in Fluid Transmission Pipes,” SAE technical paper 2000-01-2618 1 10 2000
- Johnston D. N. Edge K. A. “In-Situ Measurement of the Wavespeed and Bulk Modulus in Hydraulic Lines.” Proc. Instn. Mech. Engrs 205 191 197 1991
- “Hydraulic Fluid Power - Determination of the Fluid Borne Noise Characteristics of Components and Systems, Part 1: Measurement of the Speed of Sound in a Fluid.”
- Yu J. “Fluidborne Noise Impedance Characteristics of a Hydraulic Rack-and-Pinion Steering Gearbox,”
- D'Souza A.F. Oldenburger R. “Dynamic Response of Fluid Lines,” Journal of Basic Engineering Transactions of ASME 589 598 1964
- Brown F.T. “The Transient Response of Fluid Lines,” Journal of Basic Engineering Transactions of ASME 547 553 1962