Experimental investigation of the influences of shape and surface area on the EGR cooler efficiency |
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| Authors: | Sanghoon Jang Sangki Park Kapseung Choi Hyungman Kim |
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| Affiliation: | (1) Department of Mechanical Engineering & High Safety Vehicle Core Technology Research Center, Inje University, 607 Obang-Dong, Gimhae-si, Gyongsangnam-do, 621-749, Korea;(2) Graduate School of Hanyang University, Department of Mechanical Engineering, Hanyang University, 1271 Sa1-dong, Sangrok-gu, Gyeonggi-do, 426-791, Korea; |
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| Abstract: | ![]()
The cooled EGR system is one of the most effective techniques currently available for reducing NOx emissions. In this study, engine dynamometer experiments were performed to investigate the efficiencies of the shell and tube-type and stack-type EGR coolers. The results show that the heat exchange of the stack-type EGR cooler is much more effective than that of the shell and tube type because of the increased surface area and better mixing of the coolant flow, and also more PM is produced at low exhaust gas temperature than at high temperature. |
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