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http://dx.doi.org/10.3795/KSME-B.2007.31.6.514

Effect of Inlet Temperature and CO2 Concentration in the Fresh Charge on Combustion in a Homogeneous Charge Compression Ignition Engine Fuelled with Dimethyl Ether  

Bae, Choong-Sik (한국과학기술원 기계공학과)
Jang, Jin-Young (한국과학기술원 기계공학과)
Yeom, Ki-Tae (한국과학기술원 기계공학과)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.31, no.6, 2007 , pp. 514-521 More about this Journal
Abstract
This study focused on the effects of the $CO_2$ gas concentration in fresh charge and induction air temperature on the combustion characteristics of homogeneous charge compression ignition with dimethyl ether (DME) fuel, which was injected at the intake port. Because of adding $CO_2$ in fresh charge, start of auto-ignition was retarded and bum duration became longer. Indicated combustion efficiency and exhaust gas emission were found to be worse due to the incomplete combustion. Partial burn was observed at the high concentration of $CO_2$ in fresh charge with low temperature of induction air. However, indicated thermal efficiency was improved due to increased expansion work by late ignition and prolonged bum duration. Start of auto-ignition timing was advanced with negligible change of burn duration, as induction air temperature increased. Burn duration was mainly affected by oxygen mole concentration in induction mixture. Bum duration was increased, as oxygen mole concentration was decreased.
Keywords
$CO_2$; DME(Dimethyl ether; EGR(Exhaust Gas Recirculation); HCCI(Homogeneous Charge Compression Ignition); $T_{in}$(Inlet Temperature);
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Milovanovic, N. and Chen, R., 2001, 'A Review of Experimental and Simulation Studies on Controlled Auto-Ignition Combustion,' SAE paper No. 2001-01-1890
2 Epping, K., Aceves, S., Bechtold, R., Dec, J., 2002, 'The Potential of HCCI Combustion for High Efficiency and Low Emissions,' SAE paper No. 2002-01-1923
3 Golovitchev, V. I., Nordin, N. and Chomiak, J., 1998, 'Neat Dimethyl Ether: Is It Really Diesel Fuel of Promise?,' SAE paper No. 982537
4 Pyo, Y., Lee, Y., Kim, G., Kim, M., 2003, 'Engine Performance and Exhaust Emissions Characteristics of DI Diesel Engine Operated with Neat Dimethyl Ether,' Trans. of the KSME(B), Vo.27, No.5, pp. 589-595   과학기술학회마을   DOI   ScienceOn
5 Dec, J. E., 2002, 'A Computational Study of the Effects of Low Fuel Loading and EGR on Heat Release Rates and Combustion Limits in HCCI Engines,' SAE paper No. 2002-01-1309
6 Yeom, K., Woo, Y., Jang, J., Park, Y., Bae, C., 2003, 'Performance nd Emission Charateristics of Liquid-Phase LPG Injection Engine with Different EGR Rate,' Trans. of the KSAE, Vol.11, No.5, pp7-14   과학기술학회마을
7 Zhao, F., Asmus, T., Assanis, D., Dec, J., Eng, J., Najt, P., 2003, Homogeneous Charge Compression Ignition (HCCI) Engine : Key Research and Development Issues, Society of Automotive Engineers, Warrendale, Pa
8 Kook, S., Park C., Choi, W., Bae, C., 2004, 'Effects of Two-Stage Injection on Combustion and Exhaust Emission Characteristics in a HCCI Engine,' Trans. of the KSAE, Vo.12, No.5, pp32-39   과학기술학회마을
9 Ladommatos, N., Abdelhallm, S. M., Zhao, H., and Hu, Z., 1996, 'The Dilution, Chemical, and Thermal Effects of Exhaust Gas Recirculation on Diesel Engine Emissions Part 1: Effect of Reducing Inlet Charge Oxygen,' SAE paper No. 961165
10 Yamda, H., Sakanashi, H., Choi N. and TezakiA., 2003, 'Simplified Oxidation Mechanism of DME Applicable for Compression Ignition,' SAE paper No. 2003-01-1819
11 Ladommatos, N., Abdelhallm, S. M., Zhao, H., and Hu, Z., 1996, 'The Dilution, Chemical, and Thermal Effects of Exhaust Gas Recirculation on Diesel Engine Emissions Part 2: Effect of Carbon Dioxide,' SAE paper No. 961167
12 Sahashi, W., Azetsu, A. and Oikawa, C., 2005, 'Effects on $N_2$ and $CO_2$ mixing on ignition and combustion in a homogeneous charge compression ignition engine operated on dimethyl ether,' IJER vol. 6 PP. 423-431