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Numerical Analysis of Effective Turbocharger and Baffle on Flow Field in Warm-up Catalyst for Diesel Vehicles  

Choi, Byung-Chul (School of Mechanical Systems Engineering, Chonnam National University)
Juhng, Woo-Nam (School of Mechanical Systems Engineering, Chonnam National University)
Kang, Chang-Hyuk (School of Mechanical Systems Engineering, Chonnam National University)
Wi, Dae-Woong (School of Mechanical Systems Engineering, Chonnam National University)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.16, no.5, 2008 , pp. 29-36 More about this Journal
Abstract
Diesel vehicle is growing in importance in light-duty sector as a way of reducing greenhouse gases due to improved fuel economy. Carbon monoxide, gas-phase hydrocarbon and organic fraction of diesel particulates can be oxidized to harmless products using a diesel warm-up catalyst (WCC). This study investigated the effect of a turbocharger and a baffle on flow fields and temperature distributions in the WCC for Diesel vehicles by a numerical analysis. In the case of the WCC with the turbocharger, velocity vectors and temperatures of inlet of the WCC have the relatively homogeneous distributions by the swirl generated from the turbocharger. Velocity vectors and temperatures of inlet of the WCC with the turbocharger and the baffle have the improved distributions in homogeneity compared with the case of the WCC without the baffle. The homogeneous flow field and the temperature distribution in the WCC may contribute to improve the conversion performance of the catalysts.
Keywords
Diesel engine; Catalyst; Warm-up catalyst; Turbocharger; Numerical analysis;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Y. B. Yoon, B. C. Choi, W. N. Juhng, M. G. Jung, B. S. Shin and J. P. Yoo, "Conversion Characteristics of Warm-up Catalytic Converter for the Diesel Vehicle," Spring Conference Proceedings, Vol. I, KSAE, pp.287-293, 2004
2 B. C. Choi, Y. B. Yoon, H. Y. Kang and M. T. Lim, "Oxidation Characteristics of Particulate Matter on Diesel Warm-up Catalytic Converter," Int. J. Automotive Technology, Vol.7, No.5, pp.527-534, 2006   과학기술학회마을
3 www.ecim.co.kr
4 M. Jung, R. Ford, K. Glover, N. Collings and M. Watts, "Parameterization and Transient Validation of a Variable Geometry Turbocharger for Mean - Value Modelling at Low and Medium Speed-Load Points," SAE 2002-01-2729, 2002
5 S. J. Jeong and W. -S. Kim, "Three-Dimensional Numerical Study on the Use of Warm-up Catalyst to Improve Light-off Performance," SAE 2000-01-0207, 2000
6 W. A. Majewski and M. K. Khair, "Diesel Emissions and Their Control," SAE, pp.170-172, 2006
7 S. H. Park, B. C. Choi and M. T. Cho, "Flow Field Improvement of Warm-up Catalyst for Passenger Car Using Baffle-plate," Fall Conference Proceedings, Vol.I, KSAE, pp.258-265, 2005
8 S/C Tetra (V. 6) User's Guide, Solver Reference, pp.1-2, 1998
9 B. C. Choi, S. H. Park, C. H. Lee, H. Y. Kang and M. G. Jung, "After-treatment System of Catalytic Converter with Baffle-plate for Diesel Passenger Car," Korea Invention No.20- 0433965, 2006