INVESTIGATION OF NOISE SOURCES ON A SERIES HYBRID TRANSMISSION

Authors

  • Richard Klop Purdue University, Department of Agricultural and Biological Engineering, 225 S. University St., West Lafayette, Indiana 47907, USA
  • Monika Ivantysynova Purdue University, Department of Agricultural and Biological Engineering, 225 S. University St., West Lafayette, Indiana 47907, USA

Keywords:

hydrostatic transmission, sound power, noise sources, measurements, TransModel, series hybrid

Abstract

Advanced hydrostatic transmissions and hydraulic hybrids show potential in new market segments such as commercial vehicles and passenger cars. Such new applications regard low noise generation as a high priority, thus, demanding new quiet hydrostatic transmission designs. The aim of this paper is to investigate noise sources on a series hybrid transmission through simulation and measurements. A model has been developed to capture the interaction of a pump and motor working in a hydrostatic transmission and to predict overall noise sources. The model describes dynamics of the system by coupling lumped parameter pump and motor models with a one-dimensional unsteady compressible transmission line model including a dynamic model of an accumulator. A semi-anechoic chamber has been designed and constructed for sound intensity measurements that can be used to derive sound power. Sound power measurements were conducted on a series hybrid transmission test bench inside the semi-anechoic chamber in order to study the relationship between sound power and two types of noise sources, fluid and structure borne. The focus of these measurements was to investigate the impact of an accumulator in the high pressure line as well as the influence of varying high pressure line length. Results show a strong influence of changing line length and the addition of an accumulator on pressure ripple, but with little impact on sound power. A high correlation was found between sound power levels and control moment amplitudes on the swash plate. This study demonstrates the usefulness of predicting transmission noise sources, and how this information is beneficial in the design process of a transmission.

Downloads

Download data is not yet available.

Author Biographies

Richard Klop, Purdue University, Department of Agricultural and Biological Engineering, 225 S. University St., West Lafayette, Indiana 47907, USA

Richard Klop Born on February 18th 1983 in Kalamazoo Michigan (USA). He received his B.S. Degree from Michigan State University, USA, with high honors in Mechanical Engineering in 2005. He received his Doctorate at Purdue University, USA, in Agricultural and Biological Engineering in 2010. After completing his doctorate, he is working for Parker Hydraulic Systems Division. His main research interests are modeling and design of displacement machines and energy efficient fluid power systems.

Monika Ivantysynova, Purdue University, Department of Agricultural and Biological Engineering, 225 S. University St., West Lafayette, Indiana 47907, USA

Monika Ivantysynova Born on December 11th 1955 in Polenz (Germany). She received her MSc. Degree in Mechanical Engineering and her PhD. Degree in Fluid Power from the Slovak Technical University of Bratislava, Czechoslovakia. After 7 years in fluid power industry she returned to university. In April 1996 she received a Professorship in fluid power & control at the University of Duisburg (Germany). From 1999 until August 2004 she was Professor of Mechatronic Systems at the Technical University of Hamburg-Harburg. Since August 2004 she is Professor at Purdue University, USA. Her main research areas are energy saving actuator technology and model based optimisation of displacement machines as well as modelling, simulation and testing of fluid power systems. Besides the book “Hydrostatic Pumps and Motors” published in German and English, she has published more than 80 papers in technical journals and at international conferences.

References

Ashby, B. 2002. Code for computing the numerical

solution of a system of first order ordinary differential

equations y’ = f(x,t). [online] available at

HTTP://WWW.unige.ch/~hairer/software.html

Edge, K. A. 1999. Designing quieter hydraulic systems

– some recent developments and contributions.

Proceedings Of the Fourth JHPS International

Symposium on Fluid Power, Tokyo, Japan, pp. 3 -

Johansson A. 2005. Design Principles for Noise Reduction

in Hydraulic Piston Pumps – Simulation,

Optimization and Experimental Verification. PhD

thesis, Linkoping University, Sweden.

Klop, R., Williams, K., Dyminski, D., and Ivantysynova,

M. 2007. A simulation study to reduce

noise source of compact power-split-drive transmissions.

Proceedings of the 20th Power Transmission

and Motion Control Symposium, Bath, England,

UK, pp. 83 - 102.

Klop, R. and Ivantysynova, M. 2009. A Method of

Characteristics Based Coupled Pump/Line Model to

Predict Noise Sources of Hydrostatic Transmissions.

Bath ASME Symposium on Fluid Power and

Motion Control, Hollywood, USA, [DSCC2009-

.

Klop, R. and Ivantysynova, M. 2010a. Sound Intensity

Measurements to Investigate Noise Generation

of Hydrostatic Transmissions. Proceedings of the

th International Fluid Power Conference. Aachen,

, pp. 229 - 242.

Klop, R. and Ivantysynova, M. 2010b. Validation of a

Coupled Pump-Motor-Line Model to Predict Noise

Sources of Hydrostatic Transmissions. Proc. of the

th FPNI PhD Symposium, Lafayette, IN, USA.

Klop, R. 2010. Investigation of Hydraulic Transmission

Noise Sources. PhD thesis, Purdue University,

USA.

Kojima, E. and Ichiyanagi, T. 2000. Research on

Pulsation Attenuation Characteristics of Silencers

in Practical Fluid Power Systems. International

Journal of Fluid Power, 1(2), pp. 29 - 38.

Kojima, E. and Shinada, M. 1986. Characteristics of

Fluid-borne Noise Generated by a Fluid Power

Pump (4th Report, Pressure Ripple in Hydrostatic

Power Transmission). Bulletin of JSME, 29 (258),

pp. 4147 - 4155.

Nguyen, T. M. and Elahinia, M. 2008.Vibration isolation

for parallel hydraulic hybrid vehicles. Shock

and Vibration Journal, 15,pp. 193 - 204.

Schohl, G. A. 1993. Improved approximate method for

simulating frequency-dependent friction in transient

laminar flow. Journal of Fluids Engineering,

ASME, 115(3), pp. 420 - 424.

Seeniraj, G. K. 2009. Model based optimization of

axial piston machines focusing on noise and efficiency.

PhD thesis, Purdue University, USA.

Wieczorek, U. and Ivantysynova, M. 2000. Caspar –

a computer-aided design tool for axial piston machines.

Proceedings of the Bath Workshop on

Power Transmission and Motion Control, University

of Bath, UK, pp. 113 - 126.

Wylie, E. and Streeter, V. 1978. Fluid Transients.

McGraw-Hill Inc. ISBN 0-07-072187-4.

Downloads

Published

2011-11-01

How to Cite

Klop, R., & Ivantysynova, M. (2011). INVESTIGATION OF NOISE SOURCES ON A SERIES HYBRID TRANSMISSION. International Journal of Fluid Power, 12(3), 17–30. Retrieved from https://journals.riverpublishers.com/index.php/IJFP/article/view/460

Issue

2011: Vol 12 Iss 3

Section

Original Article

Most read articles by the same author(s)

1 2 > >>