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http://dx.doi.org/10.5050/KSNVE.2011.21.1.018

A Study on the Pulsation Pressure Reduction for the Hydraulic System of Medium-large Excavator  

Kim, Young-Hyun (현대중공업 진동소음연구실)
Joo, Won-Ho (현대중공업 진동소음연구실)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.21, no.1, 2011 , pp. 18-23 More about this Journal
Abstract
With hydraulic noise test facility, a variety of tests were performed to investigate the pulsation pressure generation mechanism and its transmission characteristics and to derive the noise control methodology. Many experiments were carried out by changing average pressure, flow rate, pump speed, hose length and MCV spool condition. From the test results, the correlations between pulsation pressure and other design parameters, such as static pressure, flow rate and MCV spool opening area and length of hose, were found out. And also each contribution factors were evaluated from the regression analysis. By changing hose length, the pulsation pressure resonance phenomenon was investigated. In order to find out the pulsation pressure reduction measures pulsation pressure analysis, such as pulsation pressure of hydraulic pump itself and pulsation pressure of hydraulic system, by using AMESim were studied. In addition hydraulic silencer was developed based on the Helmholtz resonator. And its performance was evaluated by installing the silencer at the excavator.
Keywords
Excavator; Hydraulic System; Pulsation Pressure; Silencer;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Kim, Y. H. and Kim, D. H., 2004, Noise Contribution Analysis for the Noise Reduction of Excavator, Proceedings of the Inter-noise 2004, p. 555.
2 ISO 10767 : Determination of Pressure Ripple Levels Generated in Systems and Components, Part 1 : Precision Method for Pumps.
3 ISO 10767 : Determination of Pressure Ripple Levels Generated in Systems and Components, Part 2 : Simplified Method for Pumps.
4 ISO 10767 : Determination of Pressure Ripple Levels Generated in Systems and Components, Part 3 : Precision Method for Motors.
5 Kim, Y. H., Joo, W. H. and Bae, J. G., 2009, A Study on the Performance Improvement of Medium Speed Diesel Engine Exhaust Silencer in the Low-frequency Range Using Array Resonators, Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 19, No. 7, pp. 693-698.   과학기술학회마을   DOI
6 Directive 2000/14/EC of the European Parliament and of the Council on the Approximation of the Laws of the Member States Relating to the Noise Emission in the Environment by Equipment for use Outdoors.