Investigation on the flow and heat transfer characteristics of diesel engine EGR coolers

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Investigation on the flow and heat transfer characteristics of diesel engine EGR coolers

Kim, H. -M. / Park, S. -K. / Choi, K. -S. / Wang, H. -M. / Lee, D. -H. / Lee, D. -K. / Cha, Y. -S. / Lee, J. -S. / Lee, J.

Abstract

Abstract An important goal in diesel engine research is the development of a means to reduce the emissions of nitrogen oxides (NOx). The use of a cooled exhaust gas recirculation (EGR) system is one of the most effective techniques currently available for reducing nitrogen oxides. Since PM (Particulate Matter) fouling reduces the efficiency of an EGR cooler, a tradeoff exists between the amount of NOx and PM emissions, especially at high engine loads. In the present study, we performed engine dynamometer experiments and numerical analyses to investigate how the internal shape of an EGR cooler affects the heat exchanger efficiency. Heat exchanger efficiencies were examined for plain and spiral EGR coolers. The temperature and pressure distributions inside these EGR coolers were obtained in three dimensions using the numerical package program FLUENT.

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Document information

Title :

Investigation on the flow and heat transfer characteristics of diesel engine EGR coolers

Contributors:

Kim, H. -M. (author) / Park, S. -K. (author) / Choi, K. -S. (author) / Wang, H. -M. (author) / Lee, D. -H. (author) / Lee, D. -K. (author) / Cha, Y. -S. (author) / Lee, J. -S. (author) / Lee, J. (author)

Published in:

International Journal of Automotive Technology ; 9 , 2 ; 149-153

Publication date :

2008-04-01

Size :

5 pages

ISSN :

1976-3832 , 1229-9138

DOI :

https://doi.org/10.1007/s12239-008-0019-4

Type of media :

Article (Journal)