Browse > Article

A Study on Thermal and Modal Characteristics for EGR System with Dimpled Rectangular Tube  

Seo, Young-Ho (부산대학교 항공우주공학과 대학원)
Heo, Sung-Chan (부산대학교 항공우주공학과 대학원)
Kwon, Young-Seok (나라엠앤디(주))
Ku, Tae-Wan (부산대학교 항공우주공학과)
Kim, Jeong (부산대학교 항공우주공학과)
Kang, Beom-Soo (부산대학교 항공우주공학과)
Publication Information
Journal of the Korean Society for Precision Engineering / v.25, no.3, 2008 , pp. 115-125 More about this Journal
Abstract
Recently, Exhaust Gas Recirculation (EGR) system which re-flow a cooled exhaust gas from vehicles burning diesel as fuel to a combustion chamber of engine has been used to solve the serious air pollution. For the design and mass production of EGR system, it is essential to ensure structural integrity evaluation. The EGR system consisted of ten dimpled oval core rectangular tubes, two fix-plates, two coolant pipes, shell body and two flanges in this study. To confirm the safety of the designed system, finite element modeling about each component such as the dimpled oval core tube with the dimpled shape and others was carried out. The reliability of EGR system against exhaust gas flow with high temperature was investigated by flow and pressure analysis in the system. Also, thermal and strength analysis were verified the safety of EGR system against temperature change in the shell and tubes. Furthermore, modal analysis using ANSYS was also performed. From the results of FE analysis, there were confirmed that EGR system was safe against the flow of exhaust gas, temperature change in EGR system and vibration on operation condition, respectively.
Keywords
Exhaust Gas Recirculation System; Dimpled Rectangular Tube; Thermal-Structural Coupled Field Analysis; Modal Analysis; Finite Element Method;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Idcheria, C. A. and Pickett, L. M., "Effect of EGR on Diesel Premixed-Burn Equivalence Ratio," Proceedings of the Combustion Institute, Vol. 31, Issue 2, pp. 2931 - 2938, 2007
2 Heo, H. S., Won, J. P. and Park, K. S., "Evaluation of Thermal Fluid Characterisitics for EGR Cooler with Spiral Type," Transactions of KSAE, Vol. 11, No. 6, pp.44-50, 2003
3 Dubreuil, A. and Foucher, F., "HCCI Combustion: Effect of NO in EGR," Proceedings of the Combustion Institute, Vol. 31, Issue 2, pp. 2879 - 2886, 2007
4 Banzhaf, M. and Lutz, R., "Heat Exchanger for Cooled Exhaust Gas Recirculation," SAE Paper No. 971822, 1997
5 Incropera, F. P. and Dewitt, D. P., "Fundamentals of Heat and Mass Transfer 5th Edition," John Wiley & Sons, 2005
6 Ladommatos, N., Abdelhalim, S. M., Zhao, H. and Hu, Z., "The dilution, Chemical, and Thermal Effects of Exhaust Gas Recirculation on Diesel Enginer Emmision, Part I: Effect of Reducing Inlet Charge Oxygen," SAE Paper No. 961165, 1996
7 Automation Creations Inc., http://www.matweb.com