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ISSN 2753-3239
ISSN 2753-3239
CCC: 7
PROCEEDINGS OF THE SIXTH INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE
PROCEEDINGS OF THE SIXTH INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE
Edited by: J. Pombo
Paper 14.7
Analysis of the Influence of Working Rate and Energy Consumption of Air Compressor in EMU Air Supply System Considering Leakage
T. Wang1, J. Zuo1,2, J. Ding1, X. Wu1 and Y. Pan1
1Institute of Rail Transit, Tongji University, Shanghai, China
2Shanghai Key Laboratory of Rail Infrastructure Durability and System Safety, Tongji University, Shanghai, China
Full Bibliographic Reference for this paper
T. Wang, J. Zuo, J. Ding, X. Wu, Y. Pan, "Analysis of the Influence of Working Rate and Energy Consumption of Air Compressor in EMU Air Supply System Considering Leakage", in J. Pombo, (Editor), "Proceedings of the Sixth International Conference on
Railway Technology: Research, Development and Maintenance",
Civil-Comp Press, Edinburgh, UK,
Online volume: CCC 7, Paper 14.7, 2024, doi:10.4203/ccc.7.14.7
Keywords: train, air compressor, air supply, working rate, leakage, energy consumption.
Abstract
Under different operating conditions, the frequency of utilization of electric multiple units (EMU) air equipment is different. If the air consumption of equipment cannot match with the air supply, the air compressor will be underutilized, resulting in compressor oil emulsification. In engineering, the working rate is usually improved by increasing compressor working time to avoid emulsification, but this also leads to higher energy consumption. For this problem, based on the composition and principle of the EMU air supply system, models of air supply system considering leakage effect are established, and the influence of different air compressor start-stop pressure and air storage cylinder volume on the compressor working rate are analysed under two typical working conditions of initial air charging and normal line running. The results show that when the starting pressure of the air compressor is 8.5 bar or above, the working rate is positively correlated with the stopping pressure. When the starting pressure is low and the stopping pressure is high, the energy consumption of the air compressor is low. When the volume of the air storage cylinder is between 160 L and 190 L, the energy consumption of the air compressor is low, but the working rate is higher than 30%. The research results provide a fundamental basis for the parameter design and selection of train air supply system.
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